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Antrodiaetus occultus Coyle Figs. 3, 31, 47 Antrodiaetus occultus Coyle 1971: 353 ���354, figs. 123, 178, 204 ��� 206, 248 ��� 249; Platnick 2005. Material Examined. Oregon: Lane County: Eugene, 2 males (determined by Coyle, 1969) (AMNH); H. J. Andrews Experimental Forest, 5 males (JMC). Diagnosis. This species is the only member of the genus which has the tibia I prolateral macrosetae reaching the distal end of the segment on males (Fig. 47). Abbreviated Description. All three dorsal opisthosomal sclerotized patches separate; male genital plate with sclerotized parts divided, straight to recurved (Fig. 31); chelicera without distodorsal projection, without setae on upper ectal surface; with prolateral brush of macrosetae on tibia I (Fig. 47) which reach distal end of segment, 37���74 % of macrosetae ensiform; tibia I with 2���9 macrosetae retrolaterally, without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I sinuous, without macrosetae ventrally; tip of palpal outer conductor sclerite not closely appressed to inner conductor sclerite; palpal tibia 2.11���2.25 times longer than wide; males active above ground from late September to early November. Distribution. Western Oregon between the coast and the Cascade Mountain range (Fig. 3; Coyle 1971: Map 2). Comments. Examination of voucher material from the study of McIver et al. (1992) revealed the presence of two species: individuals from old growth stands (JMC) are A. occultus and small, yellowish colored specimens (OSAC) from a clearcut stand (3 males) are possibly an undescribed species., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on page 30, DOI: 10.5281/zenodo.170130, {"references":["Coyle, F. A. (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae: Antrodiaetidae). Bulletin of the Museum of Comparative Zoology, 141 (6), 269 - 402.","Platnick, N. I. (2005) The world spider catalog, version 5.5. American Museum of Natural History, New York. Available from: http: // research. amnh. org / entomology / spiders / catalog / index. html (accessed 31 August 2005)","McIver, J. D., Parsons, G. L. & Moldenke, A. R. (1992) Litter spider succession after clear-cutting in a western coniferous forest. Canadian Journal of Forestry Research, 22, 984 - 992."]}

Hexura rothi Gertsch & Platnick Figs. 1, 3, 5, 9, 16 Hexura rothi Gertsch & Platnick 1979: 2627, figs. 64 ���66, 68��� 69; Platnick 2005. Material Examined (m = male, f = female, i = immature). Oregon (all collected in 2001 by Niwa and Peck USFS): Curry County: Galice Ranger District, Siskiyou National Forest, N 42 �� 38 ��� 46 ���, W 123 �� 55 ���00��� to N 42 �� 36 ���06���, W 123 �� 51 ��� 23 ��� (1128���1402 m elevation), 25 June (7 f, 11 i), 9 July (5 f, 18 i), 23 July (10 i), 6 Aug. (2 f, 20 i), 20 Aug. (2 f, 11 i), 4 Sept. (6 f, 7 i), 17 Sept. (6m, 8 f, 4 i), 9 Oct. (136m, 7 f, 14 i). Grants Pass Resource Area, Medford District, Bureau of Land Management, N 42 �� 38 ��� 46 ���, W 123 �� 54 ��� 46 ��� to N 42 �� 36 ���02���, W 123 �� 53 ��� 43 ��� (1036���1280 m elevation), 25 June (3 f, 4 i), 9 July (3 f, 11 i), 23 July (1 i), 6 Aug. (9 i), 20 Aug. (2 f, 8 i), 4 Sept. (1 i), 17 Sept. (1 f, 6 i), 9 Oct. (29m, 6 f, 13 i). Josephine County: Galice Ranger District, Siskiyou National Forest, N 42 �� 36 ��� 18 ���, W 123 �� 47 ��� 13 ��� to N 42 �� 32 ��� 53 ���, W 123 �� 35 ��� 59 ��� (640���1234 m elevation), 25 June (8 f, 18 i), 9 July (2 f, 9 i), 23 July (4 i), 6 Aug. (9 i), 20 Aug. (1 f, 5 i), 4 Sept. (1 f, 1 i), 17 Sept. (2m), 9 Oct. (28m, 1 f, 6 i). Grants Pass Resource Area, Medford District, Bureau of Land Management, N 42 �� 36 ��� 35 ���, W 123 �� 48 ���03��� to N 42 �� 32 ��� 52 ���, W 123 �� 37 ���05��� (533���1539 m elevation), 25 June (5 f, 7 i), 9 July (1 f, 7 i), 23 July (1 f, 6 i), 6 Aug. (6 i), 20 Aug. (7 i), 4 Sept. (2 i), 17 Sept. (2m), 9 Oct. (44 m, 2 f, 2 i). Illinois Valley Ranger District, Siskiyou National Forest, N 42 �� 16 ��� 35 ���, W 123 �� 22 ��� 53 ��� to N 42 ��01��� 34 ���, W 123 �� 27 ��� 42 ��� (945���1646 m elevation), 25 June (7 f, 11 i), 9 July (5 f, 3 i), 23 July (10 i), 6 Aug. (6 i), 20 Aug. (2 f, 16 i), 4 Sept. (1 f, 1 i), 17 Sept. (11 i), 9 Oct. (29m, 4 f, 2 i). Ashland Resource Area, Medford District, Bureau of Land Management, N 42 �� 17 ��� 27 ���, W 123 �� 21 ��� 36 ��� to N 42 ��00��� 18 ���, W 123 �� 30 ��� 53 ��� (518���1372 m elevation), 25 June (3 f, 28 i), 9 July (3 f, 5 i), 23 July (13 i), 6 Aug. (1 f, 15 i), 20 Aug. (1 f, 8 i), 4 Sept. (1 f), 17 Sept. (1 f, 5 i), 9 Oct. (15m, 3 f, 5 i). Diagnosis. The presence of only four spinnerets in H. rothi will separate it from other members of the genus; which have six spinnerets. Distribution. This species has only been recorded from Curry, Douglas, Jackson, Lane, and Josephine Counties of southwestern Oregon (Figs. 1, 3). Wandering Activity. Collection of mature males was restricted to the early fall, with 96 % trapped on 9 October 2001 (Fig. 5). Females were active over the entire sampling period and immature activity was highest in late June���early July and September���October. Comments. Previous habitat information is limited to a single record collected from myrtle duff (Gertsch & Platnick 1979). Opler and Lattin (2001) speculated that H. rothi may be an old��growth forest obligate. Our data expand this knowledge of this species considerably, and indicate that H. rothi occupies a wide range of mid�� and latesuccessional coniferous habitats. Although restricted to the western Siskiyou Mountains, it was found in all 28 sites surveyed. It was most abundant in cool, high elevation sites [ABCO��ABMAS/ QUSA 2 and ABCO / SYMO plant association (25.4 % and 21.8 % of the total, respectively)] and least abundant in warm, lower elevation sites [PSME /Dry Shrub sites (5.8 %)]. Hexura rothi appears to be more tolerant of drier conditions than H. picea, which is found in moister areas of northwestern Oregon and western Washington. Opler and Lattin (2001) suggested that H. picea requires the constant availability of moisture associated with old��growth and coastal habitats. Within the study area, H. rothi appears to be widespread and abundant as it was the most common spider collected (395 individuals, or 14.4 % of total spider abundance). Overall, it was 2.6 times more abundant in the Grant Pass area than in the Cave Junction area. Gertsch and Platnick (1979) reported that an egg sac was discovered with a female collected 22 July. The egg sac contained about 80 eggs., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 11-15, DOI: 10.5281/zenodo.170130, {"references":["Gertsch, W. J. & Platnick, N. I. (1979) A revision of the spider family Mecicobothriidae (Araneae, Mygalomorphae). American Museum Novitates, no. 2687, 1 - 32.","Platnick, N. I. (2005) The world spider catalog, version 5.5. American Museum of Natural History, New York. Available from: http: // research. amnh. org / entomology / spiders / catalog / index. html (accessed 31 August 2005)","Opler, P. A. & Lattin, J. D. (2001) Systematic Compendium in: Narrative on arthropods and annelid worms of old-growth and late successional conifer forests, mature riparian woods, and of coarse woody debris associated arthropods within the range of the northern spotted owl (Strix occidentalis caurina). Available from: http: // www. mesc. usgs. gov / resources / education / arthropods / systematic _ compendium. html (accessed 31 August 2005)"]}

Antrodiaetus coylei n. sp. Figs. 1, 7, 12, 24���25, 35, 40 ���41, 50 Antrodiaetus new sp. # 1: Niwa & Peck 2002: 791. Type Material. Oregon (all collected on 11 Oct. 1998 by Niwa and Peck USFS): Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest: N 42 �� 9 ��� 50.2 ���, W 122 �� 42 ��� 24.9 ��� (926���1024 m elevation) (male holotype, NMNH; 18 male paratypes, WFIC); N 42 �� 8 ���58.0���, W 122 �� 41 ��� 14.3 ��� (1219���1268 m elevation) (3 male paratypes, TTU); N 42 �� 8 ���58.0���, W 122 �� 42 ��� 24.9 ��� (1000���1146 m elevation) (21 male paratypes, JCC); N 42 �� 8 ��� 5.7 ���, W 122 �� 42 ��� 24.9 ��� (1463 m elevation) (2 male paratypes, TTU); N 42 �� 8 ��� 5.7 ���, W 122 �� 41 ��� 14.3 ��� (1317���1365 m elevation) (6 male paratypes, AMNH). Diagnosis. This species differs from many members of the genus by having the three opisthosomal sclerotized patches fused into a single scutum (Fig. 12). Others with this characteristic occur in Japan, eastern North America, and the Pacific Northwest of the USA (Oregon: A. metapacificus n. sp. and Washington: A. cerberus Coyle). Antrodiaetus coylei n. sp. can be easily distinguished from A. metapacificus n. sp. and A. cerberus by having a small cheliceral distodorsal projection (Fig. 35). Etymology. The specific epithet honors Dr. Fred Coyle for his many excellent studies in arachnology. His work has led the way for others to know Antrodiaetidae. Distribution. Known only from the Ashland Ranger District, Rogue River National Forest, Jackson County, Oregon (Fig. 1). Description. Female unknown. Male (n = 51): body large, total body length 12.2 (10.6, 13.65), and orangish��brown, appendages and sclerotized patches on opisthosoma more evenly brown, dark brown pigment encircling anterior median eyes and between posterior median and lateral eyes. In freshly collected material the body and legs appear more greenish��brown in coloration. Dorsal shield of the prosoma 6.3 (4.95, 6.4) [mean �� s.d., 5.88 �� 0.32 (n = 50)] long, 4.55 (3.7, 4.8) wide, with thin weak setae scattered sparsely over pars thoracica except slightly denser along lateral and posterior borders. Opisthosoma 5.9 (5.65, 7.25) long, 3.55 (3.5, 5.5) wide; all three dorsal sclerotized patches fused into single scutum (Fig. 12); male genital plate with sclerotized parts undivided, slightly to strongly recurved (24���25). Chelicera with large area on upper ectal surface without setae; with distodorsal projection (Fig. 35). Palp with tibia swollen. Tibia 2.3���2.7 times longer than wide; widest in proximal third; 3.55 (3.0, 3.4) long, 1.3 (1.15, 1.45) wide. Tip of outer conductor sclerite (Fig. 50) roundly pointed; closely appressed to inner conductor sclerite. Tip of inner conductor sclerite well sclerotized and not curved. Leg I (Figs. 40���41) without any segment being greatly enlarged or modified with processes; femur 5.2 (4.8, 5.55) long, patella 2.3 (2.1, 2.4) long, tibia 3.75 (3.35, 3.65) long, 1.35 (1.1, 1.2) wide, metatarsus 4.55 (4.1, 4.75) long, tarsus 2.35 (2.25, 2.6) long. Macrosetae with 21���42 % being ensiform: with 48 (13 ensiform) [43 (9 ensiform), 38 (16 ensiform)] macrosetae. Tibia I with 11 (6 large) [5, 14 (6 large)] medial (not extending to distal end) macrosetae ventrolaterally, the longest seta at most about width of tibia (about as long as prolateral macrosetae). Tibia I without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I sinuous, without macrosetae ventrally; other setae ventrally on metatarsus I = 1.3 times greatest width of segment. Variation. One of the males is yellowish��brown in color; much lighter in coloration than any of the other specimens. It does not otherwise differ remarkably from the rest of the specimens and was collected in the same general area (from N 42 �� 8 ���58.0���, W 122 �� 42 ��� 24.9 ���) as normally colored males. Therefore, it is considered teneral and not normal variation in coloration. Wandering Activity. All 51 males were collected on 11 October 1998 (Fig. 7). Comment. Antrodiaetus coylei n. sp. was only collected in the eastern Siskiyou Mountains study area. It was collected in 16 of 18 sites but was not particularly abundant in any one site, ranging from 1���7 individuals per site., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 20-21, DOI: 10.5281/zenodo.170130, {"references":["Niwa, C. G. & Peck, R. W. (2002) Influence of prescribed fire on carabid beetle (Carabidae) and spider (Araneae) assemblages in forest litter in southwestern Oregon. Environmental Entomology, 31 (5), 785 - 796."]}

Antrodiaetus pugnax (Chamberlin) Figs. 1, 4, 7, 33, 48 Antrodiaetus pugnax: Coyle 1971, 354, figs. 109���112, 124, 132, 161, 179, 207 ��� 212, 250���252, 292 ��� 294; Niwa & Peck 2002: 791; Platnick 2005 (see for complete synonymy). Material Examined (m = male). Oregon, Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest, 1998: N 42 �� 85 ���8.0���, W 122 �� 41 ��� 14.3 ��� (1219��� 1268 m elevation), 29 Sept. (1m); N 42 �� 8 ��� 5.7 ���, W 122 �� 42 ��� 24.9 ��� (1463 m elevation), 29 Sept. (11m), 11 Oct. (4m); N 42 �� 8 ��� 5.7 ���, W 122 �� 41 ��� 14.3 ��� (1317���1365 m elevation), 29 Sept. (10m), 11 Oct. (5m). Josephine County, 2001: Illinois Valley Ranger District, Siskiyou National Forest, N 42 ��07��� 23 ���, W 123 �� 24 ��� 25 ��� to N 42 ��08���05���, W 123 �� 20 ��� 30 ��� (1280���1494 m elevation), 4 Sept. (16m), 17 Sept. (6m), 9 Oct. (9m). Ashland Resource Area, Medford District, Bureau of Land Management, N 42 ��01��� 34 ���, W 123 �� 27 ��� 42 ��� (1646 m elevation), 4 Sept. (9m), 17 Sept. (2m), 9 Oct. (1m). Diagnosis. The presence of a ventral prominence on tibia and metatarsus I and a group of macrosetae on the tibial I swelling (Fig. 48) will separate males of this species from all others in the genus. Abbreviated Description. With three (occasionally two) separate dorsal opisthosomal sclerotized patches; male genital plate with sclerotized parts divided, straight to slightly recurved (Fig. 33); chelicera without distodorsal projection, without setae on upper ectal surface; with prolateral brush of macrosetae on tibia I (Fig. 48), 67���100 % of macrosetae ensiform; tibia I with 2���9 macrosetae retrolaterally, without large heavy macrosetae ventrally; middle of tibia and metatarsus I each greatly swollen in lateral view; metatarsus I weakly sinuous, with pair (setae A���B) of distal macrosetae ventrally; tip of palpal outer conductor sclerite closely appressed to inner conductor sclerite; palpal tibia 2.26���2.42 times longer than wide. Distribution. Oregon, southern Washington, into northwestern Idaho (Figs. 1, 4; Coyle 1971: map 2). Wandering Activity. All individuals were trapped between late August and early October (Fig. 7). Comments. Antrodiaetus pugnax was limited to the Siskiyou Mountains study areas. Within the eastern Siskiyou Mountains it was found in equal abundance in burned and unburned sites (16 in each). Within the western Siskiyou Mountains, it was restricted to plant associations within the white fir type near Oregon Caves National Monument. Of the 41 individuals collected in the latter area, 22 were in ABCO��SYMO, 14 were in ABCO�� ABMAS / QUSA 2 and 5 were in ABCO��BENE 2 / ACTR plant associations. All 74 individuals collected were male., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 32-33, DOI: 10.5281/zenodo.170130, {"references":["Coyle, F. A. (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae: Antrodiaetidae). Bulletin of the Museum of Comparative Zoology, 141 (6), 269 - 402.","Niwa, C. G. & Peck, R. W. (2002) Influence of prescribed fire on carabid beetle (Carabidae) and spider (Araneae) assemblages in forest litter in southwestern Oregon. Environmental Entomology, 31 (5), 785 - 796.","Platnick, N. I. (2005) The world spider catalog, version 5.5. American Museum of Natural History, New York. Available from: http: // research. amnh. org / entomology / spiders / catalog / index. html (accessed 31 August 2005)"]}

Antrodiaetus montanus (Chamberlin & Ivie) Figs. 3, 21, 30 Antrodiaetus montanus: Coyle 1971: 359 –362, figs. 140, 150, 162, 171, 180, 213 – 217, 253–255, 295 – 298; Platnick 2005 (see for complete synonymy). Material Examined. Washington: near Richland, Benton County, 2 males (JCC). Diagnosis. The presence of setae on the upper ectal surface of the chelicera (Fig. 21) will separate this species from all others in the genus except for A. hageni (Chamberlin). From this latter species, the males differ by not having the metatarsus I swollen in the middle. In southwestern Oregon, it is the only member of the genus to have a procurved male genital plate (Fig. 30). Abbreviated Description. All three dorsal opisthosomal sclerotized patches separate; male genital plate with sclerotized parts undivided, thin, and procurved; chelicera without distodorsal projection, with setae on upper ectal surface; with prolateral brush of macrosetae on tibia I, 48–93 % of macrosetae ensiform; tibia I with 6–23 (2–13 ensiform) macrosetae retrolaterally, without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I weakly sinuous, with one large retrolateral distal macroseta (seta A) ventrally; tip of palpal outer conductor sclerite not closely appressed to inner conductor sclerite; palpal tibia 2.54–2.78 times longer than wide; males active above ground in early August to early November. Distribution. Great Basin region from Utah and Nevada north to Oregon, Idaho, and Washington (Fig. 3; Coyle 1971: map 2). Comments. The description is based upon data from Coyle (1971) as well as the examination of two males.

Atypoides gertschi Coyle Figs. 1, 3, 6, 10, 16���17 Atypoides gertschi Coyle 1968: 176 ���184, figs. 7 ���9, 15, 20 ���21, 30, 35 ���36, 41, 50 ���52, 58���67, 74���77, 90��� 94; Niwa & Peck 2002: 789 ���791; Platnick 2005. Material Examined (m = male, f = female, i = immature). Oregon (all collected by Niwa and Peck USFS): Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest, 1998: N 42 �� 9 ��� 50.2 ���, W 122 �� 42 ��� 24.9 ��� (926���1024 m elevation), 15 June (1 i), 8 July (1 i), 17 Aug. (1m, 1 i), 1 Sept. (7m); N 42 �� 8 ���58.0���, W 122 �� 41 ��� 14.3 ��� (1219��� 1268 m elevation), 15 June (1 i), 8 July (1 f, 3 i), 20 July (1 i), 17 Aug. (32m, 2 i), 1 Sept. (16m), 29 Sept. (1m); N 42 �� 8 ���58.0���, W 122 �� 42 ��� 24.9 ��� (1000���1146 m elevation), 20 July (1 i), 17 Aug. (36m, 3 i), 1 Sept. (23m); N 42 �� 8 ��� 5.7 ���, W 122 �� 42 ��� 24.9 ��� (1463 m elevation), 15 June (2 i), 8 July (2 i), 17 Aug. (59m, 2 i), 1 Sept. (43m), 29 Sept. (3m), 11 Oct. (2 i); N 42 �� 8 ��� 5.7 ���, W 122 �� 41 ��� 14.3 ��� (1317���1366 m elevation), 15 June (2 f, 2 i), 8 July (5 i), 20 July (2 i), 17 Aug. (20m, 4 i), 1 Sept. (23m), 29 Sept. (2m), 11 Oct. (4 i). Jackson County, Ashland Resource Area, Medford District, Bureau of Land Management, 1999: N 42 �� 8 ���58.0���, W 122 �� 24 ��� 45.7 ��� (1372���1524 m elevation), 2��� 4 Aug. (4m); N 42 �� 8 ��� 5.7 ���, W 122 �� 25 ��� 56.3 ��� (1372���1524 m elevation), 2��� 4 Aug. (1m); N 42 �� 10 ��� 42.4 ���, W 122 �� 22 ��� 24.5 ��� (1372���1524 m elevation), 2��� 4 Aug. (3m), 16���18 Aug. (1m), 13���15 Sept. (1m); N 42 �� 9 ��� 50.2 ���, W 122 �� 21 ��� 13.8 ��� (1372���1524 m elevation), 2��� 4 Aug. (2m), 16���18 Aug. (2m); N 42 �� 4 ��� 36.9 ���, W 122 �� 21 ��� 13.8 ��� (1372���1524 m elevation), 16���18 Aug. (4m), 13���15 Sept. (1m). Diagnosis. Anterior pair of spinnerets essentially round in A. gertschi; all spinnerets clearly longer than wide in other species of Atypoides. Distribution. Cascade and eastern Siskiyou Mountains in southern Oregon south and east into the northern Sierra Nevada Mountains of California (Figs. 1, 3; Coyle 1968: map 1). Wandering Activity. Male wandering activity was concentrated between late July and early September while females were active June��early July (Fig. 6). Immatures were collected throughout the trapping period in 1998 but only in late June in 1999. Comments. Atypoides gertschi was found in the eastern Siskiyou and southern Cascades Mountains study areas. Within the eastern Siskiyou Mountains it was the third most abundant spider collected, comprising 8.1 % of the total, and was collected in 12 of 18 sites. Although it was found in both burned and unburned sites (5 burned and 7 unburned sites), 72.1 % of adults collected were from unburned sites. Atypoides gertschi was found in 8 of 16 sites in the southern Cascade Mountains (3 thinned and 5 unthinned sites), but was considerably less common, comprising only 0.6 % of the total number of spiders collected. Overall, only 5 of 290 individuals collected were female. Known biological information for this species has been summarized by Coyle (1971)., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 15-16, DOI: 10.5281/zenodo.170130, {"references":["Coyle, F. A. (1968) The mygalomorph spider genus Atypoides (Araneae: Antrodiaetidae). Psyche, 75 (2), 157 - 194.","Niwa, C. G. & Peck, R. W. (2002) Influence of prescribed fire on carabid beetle (Carabidae) and spider (Araneae) assemblages in forest litter in southwestern Oregon. Environmental Entomology, 31 (5), 785 - 796.","Platnick, N. I. (2005) The world spider catalog, version 5.5. American Museum of Natural History, New York. Available from: http: // research. amnh. org / entomology / spiders / catalog / index. html (accessed 31 August 2005)","Coyle, F. A. (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae: Antrodiaetidae). Bulletin of the Museum of Comparative Zoology, 141 (6), 269 - 402."]}

Antrodiaetus metapacificus n. sp. Figs. 1, 7, 14, 28���29, 37, 44 ���45, 52 Type Material. Oregon (all collected on 9 Oct. 2002 by Niwa and Peck USFS): Josephine County, Galice Ranger District, Siskiyou National Forest, N 42 �� 32 ��� 52 ���, W 123 �� 37 ��� 59 ��� (652 m elevation), 1 male holotype (NMNH), 2 male paratypes (1, JCC; 1, WFIC). Diagnosis. This species differs from many members of the genus by having the three opisthosomal sclerotized patches fused into a single scutum (Fig. 14). Others with this characteristic occur in Japan, eastern North America, and the Pacific Northwest of the USA (Oregon: A. coylei n. sp. and northeastern Washington: A. cerberus Coyle). Antrodiaetus metapacificus n. sp. can be distinguished from A. coylei n. sp. by lacking a small cheliceral distodorsal projection (Fig. 37) and differs from A. cerberus by the overall smaller size. The prosomal dorsal shield length is 5.2���5.4 in A. cerberus and 3.9���4.7 in the new species. Etymology. Meta (Greek) means, among other things, to be derivative or related. In this case it is used to show the relationship of this species to A. pacificus. This species will key to A. pacificus in Coyle (1971). This primarily based on the notion that A. pacificus consists of individuals with less than 30 % of the male tibia I macrosetae being ensiform. The percentage is actually much lower (0���3 %) in the western examples of A. pacificus (see comments below under that species). Distribution. Known only from a single location within the Galice Ranger District, Siskiyou National Forest, Josephine County, Oregon (Fig. 1). Description. Female unknown. Male (n = 3): body small, total body length 8.45 (6.35, 7.9), and yellowish��brown, appendages and sclerotized patches on opisthosoma more evenly light brown with leg I patella to tarsus reddish��brown, dark brown pigment encircling anterior median eyes and between posterior median eyes and lateral eyes. Dorsal shield of the prosoma 4.5 (3.95, 4.7) long, 3.2 (2.6, 3.35) wide, with setae scattered sparsely over pars thoracica except denser along lateral and posterior borders. Opisthosoma 3.95 (2.4, 3.2) long, 2.4 (2.75, 3.2) wide; all three dorsal sclerotized patches fused into single scutum (in holotype the area after the first is almost divided, but this junction is undetectable in paratypes) (Fig. 14); male genital plate with sclerotized parts undivided, straight to recurved (Figs. 28���29). Chelicera with large area on upper ectal surface without setae; without distodorsal projection (Fig. 37). Palp with tibia swollen. Tibia 2���2.4 times longer than wide; widest in proximal third; 2.6 (2.05, 2.3) long, 1.28 (0.85, 1.05) wide. Tip of outer conductor sclerite (Fig. 52) roundly pointed; closely appressed to inner conductor sclerite. Tip of inner conductor sclerite well sclerotized and not curved. Leg I (Figs. 44���45) without any segment being greatly enlarged or modified with processes; femur 3.9 (3.35, 3.65) long, patella 1.7 (1.5, 1.85) long, tibia 2.55 (2.25, 2.7) long, 0.5 (0.75, 0.9) wide, metatarsus 3.35 (2.8, 3.05) long, tarsus 2.4 (1.65, 1.8) long. Tibia I with relatively dense group of prolateral macrosetae medially (not reaching distal end of segment). Tibia I with relatively dense group of prolateral macrosetae medially (not reaching distal end of segment): 31 (9 ensiform) [28 (8 ensiform), 35 (10 ensiform)] macrosetae. Tibia I with 6 (6,7) medial (not extending to distal end) macrosetae ventrolaterally, the longest seta about width of tibia (noticeably longer than any prolateral macrosetae). Tibia I without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I slightly sinuous to straight, without macroseta ventrally; other setae ventrally on metatarsus I = 2 times greatest width of segment. Wandering Activity. This species was only recorded on 9 October 2001 (Fig. 7). Comments. Antrodiaetus metapacificus n. sp. was found at a single site within the Douglas��fir/dry shrub plant association of the western Siskiyou Mountains. The overstory of this relatively low elevation site (652 m) was dominated by Douglas��fir (36 % cover) but also included incense��cedar (12 %) and Oregon ash (Fraxinus latifolia Bentham) (5 %). Twenty��three understory plant species were recorded at the site, with pacific madrone (Arbutus menziesii Pursh) (6 %), Oregon ash (5 %) and tanoak (4 %) most common. The site faced SE and had a slope of approximately 24 ��., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 26-29, DOI: 10.5281/zenodo.170130, {"references":["Coyle, F. A. (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae: Antrodiaetidae). Bulletin of the Museum of Comparative Zoology, 141 (6), 269 - 402."]}

Antrodiaetus pacificus (Simon) Figs. 1, 4, 7, 15, 32, 54 Antrodiaetus pacificus: Coyle 1971: 347, figs. 121���122, 131, 147 ��� 149, 160, 170, 175 ��� 177, 197��� 203, 244 ��� 247, 284 ��� 291; Niwa & Peck 2002: 791; Platnick 2005 (see for complete synonymy). Material Examined (m = male, f = female). Oregon (all collected by Niwa and Peck USFS): Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest, 1998: N 42 �� 9 ��� 50.2 ���, W 122 �� 42 ��� 24.9 ��� (926���1024 m elevation), 20 July (7m), 17 Aug. (12m), 1 Sept. (7m, 1 f), 29 Sept. (6m), 11 Oct. (3m); N 42 �� 8 ���58.0���, W 122 �� 41 ��� 14.3 ��� (1219���1268 m elevation), 20 July (2m), 17 Aug. (7m), 1 Sept. (4m); N 42 �� 8 ���58.0���, W 122 �� 42 ��� 24.9 ��� (1000���1146 m elevation), 8 July (1m), 20 July (4m, 1 f), 17 Aug. (15m), 1 Sept. (8m), 29 Sept. (4m), 11 Oct. (4m); N 42 �� 8 ��� 5.7 ���, W 122 �� 42 ��� 24.9 ��� (1463 m elevation), 15 June (1 f), 20 July (3m), 17 Aug. (18m), 1 Sept. (3m); N 42 �� 8 ��� 5.7 ���, W 122 �� 41 ��� 14.3 ��� (1317���1365 m elevation), 20 July (1m), 17 Aug. (12m), 1 Sept. (4m). Jackson County, Ashland Resource Area, Medford District, Bureau of Land Management, 1999: N 42 �� 10 ��� 42.4 ���, W 122 �� 22 ��� 24.5 ��� (1372���1524 m elevation), 2��� 4 Aug. (19m), 16���18 Aug. (2m); N 42 �� 5 ��� 29.1 ���, W 122 �� 27 ��� 6.9 ��� (1372���1524 m elevation), 2��� 4 Aug. (15m), 16��� 18 Aug. (17m), 13���15 Sept. (1m). N 42 �� 5 ��� 29.1 ���, W 122 �� 22 ��� 24.5 ��� (1372���1524 m elevation), 2��� 4 Aug. (2m). Curry County, 2001: Galice Ranger District, Siskiyou National Forest, N 42 �� 38 ��� 46 ���, W 123 �� 55 ���00��� to N 42 �� 36 ���06���, W 123 �� 51 ��� 23 ��� (1128���1402 m elevation), 9 July (1m), 23 July (6m), 6 Aug. (5m), 20 Aug. (9m), 4 Sept. (6m), 17 Sept. (1m). Grants Pass Resource Area, Medford District, Bureau of Land Management, N 42 �� 38 ��� 46 ���, W 123 �� 54 ��� 46 ��� to N 42 �� 36 ���02���, W 123 �� 53 ��� 43 ��� (1036���1280 m elevation), 23 July (2m), 6 Aug. (7m), 20 Aug. (3m), 4 Sept. (1m). Josephine County, 2001: Galice Ranger District, Siskiyou National Forest, N 42 �� 36 ��� 18 ���, W 123 �� 47 ��� 13 ��� to N 42 �� 32 ��� 53 ���, W 123 �� 35 ��� 59 ��� (640���1234 m elevation), 23 July (4m), 6 Aug. (4m), 20 Aug. (3m), 4 Sept. (2m). Grants Pass Resource Area, Medford District, Bureau of Land Management, N 42 �� 36 ��� 35 ���, W 123 �� 48 ���03��� to N 42 �� 32 ��� 52 ���, W 123 �� 37 ���05��� (533���1539 m elevation), 23 July (2m), 6 Aug. (1m), 20 Aug. (2m), 4 Sept. (2m), 17 Sept. (2m). Illinois River Valley Ranger District, Siskiyou National Forest, N 42 �� 16 ��� 35 ���, W 123 �� 22 ��� 53 ��� to N 42 ��01��� 34 ���, W 123 �� 27 ��� 42 ��� (945���1646 m elevation), 9 July (3m), 23 July (10m), 6 Aug. (4m, 1 f), 20 Aug. (3m), 4 Sept. (4m), 17 Sept. (1m). Ashland Resource Area, Medford District, Bureau of Land Management, N 42 �� 17 ��� 27 ���, W 123 �� 21 ��� 36 ��� to N 42 ��00��� 18 ���, W 123 �� 30 ��� 53 ��� (518��� 1372 m elevation), 25 June (1m), 9 July (3m), 23 July (10m), 6 Aug. (3m, 1 f), 20 Aug. (4m, 1 f), 4 Sept. (3m), 17 Sept. (2m), 9 Oct. (2m). Diagnosis. The presence of a cheliceral distodorsal projection and low percentage of ensiform macrosetae in the prolateral brush on tibia I [0���3 % (0���27 % Blue Mountains population)] will separate this species from all others. Abbreviated Description. With 2���3 separate dorsal abdominal sclerotized patches (Fig. 15); male genital plate with sclerotized parts same thickness throughout, undivided, recurved (Fig. 32); chelicerae with distodorsal projection, without setae on upper ectal surface; with prolateral brush of macrosetae on tibia I, 0���3 % [0���27 % Blue Mountains population] of macrosetae ensiform; tibiae I with 3���17 macrosetae retrolaterally, without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I weakly sinuous or straight, without macrosetae ventrally; tip of palpal outer conductor sclerite closely appressed to inner conductor sclerite; palpal tibia 2.39���2.51 times longer than wide. Distribution. Pacific coast of North America from southern Alaska to central California (Figs. 1, 4; Coyle 1971: map 2). Wandering Activity. During all three years, adult activity was generally highest between late July and early September, although individuals were collected during all months in which trapping occurred (Fig. 7). Comments. Being found in all three study areas, A. pacificus was the most widespread and abundant mygalomorph spider collected. Overall, it was trapped in 57 of 62 sites surveyed. Its relative abundance was similar in each area, ranging from 3.7 % of the total spider fauna in the south Cascade Mountains to 4.4 % in the western Siskiyou Mountains. Coyle (1971) may have grouped more than one species under A. pacificus. Like Crawford (1988), we believe that the characters presented by Coyle (1971) for specimens from the Blue Mountain (NE Oregon and SE Washington) population are sufficiently different from A. pacificus to justify separation of this taxon into two species; however, this taxonomic work is outside of the realm of the present publication. Our samples match the western coastal population, which represents the true A. pacificus. Coyle���s material may have included examples of one of our new species. In particular, he stated (p. 352): ���Occasionally in the western samples and usually in the Blue Mountains samples the three sclerotized patches are continuous.��� It is the ���occasional western samples��� that maybe unrecognized examples of the species we are herein naming A. coylei n. sp. or A. metapacificus n. sp. Our pitfall trap data indicate that A. pacificu s, A. coylei n. sp. and A. metapacificus n. sp. are sympatric in some regions of southwestern Oregon. Only six of the 313 adult specimens collected were females. Seminal receptacles (Fig. 54) are like those illustrated by Coyle (1971: figs. 284���291) for this species. The receptacula are evenly sized and the heavily sclerotized stalk of each receptaculum is relatively elongate with a distinctly enlarged terminal region supporting the transparent bulb. Variation: The dorsal shield of the prosoma length was measured on all males obtained in 2001 in order to determine the largest and smallest specimens. The results of the measurements are (mean �� s.d.): 6.17 �� 0.33 (n = 119). To examine the possible effects of living in arid scrub brush versus woodlands, dorsal shield of the prosoma lengths were analyzed separately for both regions. The results show no significant difference T��test (t value = �� 0.11, P = 0.916) between the two ecotypes (scrub 6.17 �� 0.34; woods 6.18 �� 0.30)., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 30-32, DOI: 10.5281/zenodo.170130, {"references":["Coyle, F. A. (1971) Systematics and natural history of the mygalomorph spider genus Antrodiaetus and related genera (Araneae: Antrodiaetidae). Bulletin of the Museum of Comparative Zoology, 141 (6), 269 - 402.","Niwa, C. G. & Peck, R. W. (2002) Influence of prescribed fire on carabid beetle (Carabidae) and spider (Araneae) assemblages in forest litter in southwestern Oregon. Environmental Entomology, 31 (5), 785 - 796.","Platnick, N. I. (2005) The world spider catalog, version 5.5. American Museum of Natural History, New York. Available from: http: // research. amnh. org / entomology / spiders / catalog / index. html (accessed 31 August 2005)","Crawford, R. L. (1988) An annotated checklist of the spiders of Washington. Burke Museum Contributions in Anthropology and Natural History, no. 5, 48 pp."]}

Antrodiaetus ashlandensis n. sp. Figs. 1, 7, 11, 19���20, 22���23, 34, 38 ���39, 49 Type Material. Oregon (all collected in 1998 by Niwa and Peck USFS): Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest: N 42 �� 85 ���8.0���, W 122 �� 42 ��� 24.9 ��� (1000���1146 m elevation), 29 Sept. (3m, AMNH), 11 Oct. (male holotype, NMNH), (4 male paratypes, JCC); N 42 �� 9 ��� 50.2 ���, W 122 �� 42 ��� 24.9 ��� (926���1024 m elevation), 11 Oct. (4 male paratypes, WFIC); N 42 �� 8 ���58.0���, W 122 �� 41 ��� 14.3 ��� (1219���1268 m elevation), 29 Sept. (1 male paratype, JCC); N 42 �� 8 ��� 5.7 ���, W 122 �� 42 ��� 24.9 ��� (1463 m elevation), 11 Oct. (1 male paratype, JCC); N 42 �� 8 ��� 5.7 ���, 122 �� 41 ��� 14.3 ��� (1317���1365 m elevation), 29 Sept. (2 male paratypes, AMNH), 11 Oct. (3 male paratypes, TTU). Diagnosis. The separation of this species from others of the region requires examination of several characters. The combination of no cheliceral distodorsal projection or setal coat on upper ectal surface (Figs. 19, 34), having all three dorsal opisthosomal sclerotized patches separate (Fig. 11), and by having a prolateral brush of macrosetae on tibia I (Fig. 38, 39) will distinguish the new species from all congeners except A. pugnax and A. occultus. It can be separated from A. pugnax by not having the leg I segments of the male enlarged (Fig. 48 versus Fig. 38) and from A. occultus it differs by not having the macrosetae of tibia I extending to the distal end (Fig. 47 versus Fig. 38). Etymology. The species name is based on the region of Oregon where this spider was discovered. Distribution. Known only from Ashland Ranger District, Rogue River National Forest, Jackson County, Oregon (Fig. 1). Description. Female unknown. Male (n = 19): body large, total body length 11.4 (9.6, 11.5). Color: orangish��brown, sclerotized patches on opisthosoma more evenly brown, dark brown pigment encircling anterior median eyes and between posterior median and lateral eyes. Dorsal shield of prosoma 5.5 (5.05, 5.85) [mean �� s.d., 5.44 �� 0.23 (n = 19)] long, 4.35 (3.9, 4.55) wide, with setae scattered sparsely over pars thoracica except very densely along lateral and posterior borders. Opisthosoma 5.9 (4.55, 5.65) long, 4.1 (3.3, 4.15) wide; all three dorsal sclerotized patches separate (Fig. 11); male genital plate with sclerotized parts divided, straight to recurved (Figs. 22���23). Chelicera with large area on upper ectal surface without setae; without distodorsal projection (Figs. 19, 34). Palp with tibia swollen. Tibia 2.56���2.68 times longer than wide; widest in proximal third; 3.2 (3.1, 3.35) long, 1.25 (1.2, 1.25) wide. Tip of outer conductor sclerite (Fig. 49) roundly pointed; not appressed to inner conductor sclerite. Tip of inner conductor sclerite well sclerotized and not curved. Leg I (Figs. 38���39) without any segment being greatly enlarged or modified with processes; femur 5.6 (5.25, 5.8) long, patella 2.2 (2.15, 2.45) long, tibia 3.75 (3.6, 3.9) long, 0.8 (0.75, 0.95) wide, metatarsus 4.35 (4.1, 4.45) long, tarsus 2.7 (2.4, 2.75) long. Tibia I with relatively dense group of prolateral macrosetae medially (not reaching distal end of segment). Macrosetae with 40.5���43.3 % being ensiform: with 26 (11 ensiform) [30 (13 ensiform), 37 (15 ensiform)] macrosetae. Tibia I with 11 (7 large) [11 (7 large), 13 (8 large)] medial (not extending to distal end) macrosetae ventrolaterally, the longest seta at most about width of tibia (about as long as prolateral macrosetae). Tibia I without large heavy macrosetae ventrally; tibia and metatarsus I not swollen in lateral view; metatarsus I sinuous, without macrosetae ventrally; other setae ventrally on metatarsus I = 2 times greatest width of segment. Wandering Activity. All 19 males were collected on 29 September (6) and 11 October (13) 1998 (Fig. 7). Comment. Antrodiaetus ashlandensis n. sp. was collected in 9 of 18 sites within the eastern Siskiyou Mountains study area. Six of the sites had previously experienced prescribed underburning., Published as part of Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, pp. 1-34 in Zootaxa 1058 on pages 16-17, DOI: 10.5281/zenodo.170130