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Crossipalpus raveni Beard and Seeman, sp. nov

Authors :: Beard, Jennifer J.
Seeman, Owen D.
Bauchan, Gary R.
Publication Year :: 2014
Publisher :: Zenodo, 2014.
Abstract: Crossipalpus raveni Beard and Seeman sp. nov. (Figs 32��37) Type material examined. Holotype female ex. Woolly Oak Allocasuarina inophloia (Casuarinaceae), AUSTRALIA: Queensland, Moonie Highway, 90 km W Moonie, 27 �� 56 �� 57 �� S 149 �� 31 �� 19 �� E, 0 5 May 2007, coll. J.J. Beard and P.I. Forster (QM; BRI voucher PIF 32483). Paratypes. 9 females, 5 males, and 4 larvae, same data as holotype (QM, ANIC, USNM). Diagnosis. Dorsal setae lanceolate, strongly barbed; setae e 1 shortest. Palpal segments as wide as long. Genua I��II with seta d, without l��; tarsi I��IV without tc��. Solenidia of male much thicker and longer than in female. FEMALE (n = 10). Dorsum. (Fig. 32 a) Body measurements: distance between setae v 2 -h 1 310��365 in 9 paratypes [355]; sc 2 -sc 2 100��110 [110]; other measurements: v 2 -v 2 22��24 [24], sc 1 -sc 1 86��98 [98], c 1 -c 1 15��22 [22], c 2 -c 2 100��115 [115], c 3 -c 3 125��145 [135], d 1 -d 1 14��21 [21], d 2 -d 2 85��95 [94], d 3 -d 3 110��120 [120], e 1 - e 1 14��18 [16], e 2 -e 2 100��110 [110], e 3 - e 3 89��100 [95], f 3 -f 3 70��80 [73], h 1 -h 1 12��17 [13], h 2 -h 2 35��54 [48]. Gnathosoma completely concealed beneath prodorsum. Anterior margin of prodorsum rounded. Prodorsal shield weakly developed with oblique grooves laterally, longitudinal grooves medially. Opisthosomal shield weakly developed with oblique-longitudinal lineate grooves, becoming transverse between setae d 1 -e 1. Lateral cuticle surrounding shields smooth. Dorsal setae lanceolate, barbed; setae e 1 shorter than other setae. Setal lengths: v 2 21�� 25 [22], sc 1 20��25 [20], sc 2 20��22 [20], c 1 15��19 [15], c 2 14��20 [16], c 3 17��21 [18], d 1 12��19 [15], d 2 14��21 [18], d 3 17��21 [18], e 1 7 ��9 [8], e 2 17 ��24 [19], e 3 17 ��24 [20], f 3 18��23 [21], h 1 9��12 [11], h 2 21��24 [21]. Palps. (Fig. 32 b) Setal formula 0, 0, 0, 1, 3 (1 s+ 2 e). Tibial seta 9��11 [9] long; tarsal eupathidia 6 [6], 5 [5] long; solenidion 4��5 [4] long. Venter. (Fig. 33 a) Cuticle with fine transverse striae between setae 1 a - 3 a, longitudinal between setae 3 a - 4 a, then convex for 20��30 ��m, striae longitudinal posterior to setae 4 a; fine striae become coarse lateral to genital area. Genital setae inserted in more-or-less transverse row, g 1 inserted slightly posterior to level of g 2. Genital shield smooth, poorly developed; anal setae ps 1��2 inserted medially on anal plates in longitudinal line; seta ps 3 absent. Coxal setae fine, 2 c barbed; setae ag 1, g 1��2, ps 1��2 fine, with few barbs. Setal lengths: 1a 64 �� 83 [64], 1 b 18��30 [21], 2 b 18��25 [18], 2 c 18��21 [19], 3a 35 �� 66 [35], 3 b 16��22 [17], 4a 42 �� 92 [45], 4 b 14��26 [15], ag 1 14��18 [14], g 1 20��24 [21], g 2 18��23 [19], ps 1 11��16 [14], ps 2 10��13 [13]. Spermatheca. (Fig. 33 b) Spermathecal tube long, becoming narrow and sometimes convoluted distally, maximum 2 wide, ca. 80 long. Spermatheca vesicle not oval-shaped, 4 long, 2 wide. Genital opening between setae ps 2. Legs. (Fig. 34) Setal formula for legs I��IV (coxae to tarsi) 1 - 1-3 - 1-4 - 8 (1), 2 - 1-3 - 1-4 - 8 (1), 1-2 - 2 - 0-3 - 4, 1 - 1 - 1 - 0-3 - 4. Tarsi I and II each with 1 antiaxial solenidion ��" (5��6 long) and 2 eupathidia p��'-p��" (7��8 [7] long). Leg setation as in Table 1 except: coxae I without 1 c; genua I��II with d, without l��; tarsi I��IV without tc��. Setae v' added to tr IV. MALE (5 paratypes). Dorsum. (Fig. 35) Body measurements: distance between setae v 2 -h 1 245��265, sc 2 -sc 2 83��91; other measurements: v 2 -v 2 13��17, sc 1 -sc 1 69��74, c 1 -c 1 12��17, c 2 -c 2 85��94, c 3 -c 3 96��112, d 1 -d 1 11��13, d 2 -d 2 69��74, d 3 -d 3 78��87, e 1 - e 1 11��17, e 2 - e 2 73��81, e 3 - e 3 69��77, f 3 -f 3 57��66, h 1 -h 1 7��10, h 2 -h 2 35��43. Gnathosoma not concealed beneath prodorsum. Anterior margin of prodorsum smooth, weakly convex. Prodorsal shield weakly developed. Opisthosoma with mesonotal shield (appearing as a pair of shields) on which at least setae c 1, d 1 and d 2 inserted, with weak rugose-lineate pattern; and pygidial shield with at least setae e 1, e 3, f 3, h 2 inserted, with oblique-longitudinal weakly lineate pattern; setae h 1 often under posterior overhang of pygidial shield; shields separated by transverse striae; cuticle laterad mesonotal shield smooth with few papillations; several minute pores visible on shields. Setal lengths: v 2 19��24, sc 1 16��19, sc 2 15��20, c 1 9��14, c 2 11��16, c 3 15��17, d 1 7�� 13, d 2 9��15, d 3 12��18, e 1 6 ��8, e 2 14 ��17, e 3 15 ��18, f 3 15��19, h 1 7��10, h 2 15��19. Palps. Palps similar to female. Tibial seta 8��10 long; tarsal eupathidia 6��7, 5 �� 6 long; solenidion 7��8 long, swollen. Venter. (Fig. 36 a) All striae transverse, becoming coarse posteriorly and weak around setae ag 1. Coxal setae fine, except 2 c barbed. Setae ag 1 barbed; g 1, g 2, ps 2 fine; setae ps 1 modified to form thick blades (sexually dimorphic). Setal lengths: 1a 47 �� 52, 1 b 19��27, 2 b 19��24, 2 c 13��21, 3 a 46��60, 3 b 17��21, 4 a 37��48, 4 b 15��18, ag 1 13��16, g 1 11��15, g 2 15��20, ps 1 15��16, ps 2 8��11. Aedeagus. (Fig. 36 b) Narrow, sclerotised, tapering to a point, 67��70 long. Membranous duct runs from inside aedeagus, becoming indistinguishable. Legs. (Fig. 35) Setal formula same as female. Tarsi I and II each with 1 antiaxial solenidion ��" (ta I 9��11 long, ta II 9��10 long) and 2 eupathidia p��'-p��" (ta I 6��7, 5�� 6; ta II 7, 7��8). Solenidia much thicker and longer than those in female. DEUTONYMPH and PROTONYMPH. Unknown. LARVA (4 paratypes). Dorsum. (Fig. 37) Body measurements: distance between setae v 2 -h 1 170��180, sc 2 -sc 2 61��64; other measurements: v 2 -v 2 15��16, sc 1 -sc 1 51��55, c 1 -c 1 8��9, c 2 -c 2 58��60, c 3 -c 3 84��87, d 1 -d 1 11��13, e 1 - e 1 5��6, e 2 - e 2 53��54, e 3 - e 3 40��44, f 3 -f 3 34��35, h 1 -h 1 5��7, h 2 -h 2 13��17. Prodorsal shield obsolete. Opisthosomal shields absent; sparse irregular transverse striae anteriorly. Setal lengths: v 2 24��27, sc 1 12��16, sc 2 15��17, c 1 17�� 22, c 2 15��17, c 3 10��11, d 1 15��20, d 2 14��18, d 3 11��12, e 1 4 ��8, e 2 15 ��17, e 3 14 ��17, f 3 16��19, h 1 5��6, h 2 18��19. Palps. Palps same as adult. Tibial seta 6��7 long; tarsal eupathidia 3, 4 long, solenidion 2 long. Venter. Transverse striae, becoming oblique around anal region. All setae fine. Setal lengths: 1a 21 �� 28, 1 b 13��16, 3 a 16��30, ps 1 4��6, ps 2 4��6. Legs. (Fig. 37) Setal formula for legs I��III (coxae to tarsi) 1 - 0-3 - 0-4 - 7 (1), 0- 0-3 - 0-4 - 7 (1), 0- 0-2 - 0-3 - 3. Tarsi I and II each with 1 antiaxial solenidion ��" (3 long) and 2 eupathidia p��'-p��" (4��5 long). Leg setation as in Table 1 except genua I��III without l ��. Trochanters I��III nude. Etymology. It is with great pleasure that we name this species for our colleague and friend Dr Robert Raven, in recognition of his support for our work and his immense contribution to Arachnology. Remarks. Crossipalpus raveni sp. nov. is similar to Cr. gersoni sp. nov., as they both have seta d present on ge I��II, but Cr. raveni has lanceolate setae d on femora and genua I��II (spatulate in Cr. gersoni), and posterior ventral setae are thin, setiform and weakly barbed (broadly lanceolate and strongly barbed in Cr. gersoni).<br />Published as part of Beard, Jennifer J., Seeman, Owen D. & Bauchan, Gary R., 2014, Tenuipalpidae (Acari: Trombidiformes) from Casuarinaceae (Fagales), pp. 1-157 in Zootaxa 3778 (1) on pages 44-51, DOI: 10.11646/zootaxa.3778.1.1, http://zenodo.org/record/251337