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An experimental study of the interaction between 10.59 μm C02-laser radiation and the plasma produced by that radiation on plane, massive targets in a vacuum, is described. The laser used was a TEA double discharge device, giving an in vacuo irradiance in the regime of 1012 W/cm2 with 50 ns FWHM gain switched pulses. The laser oscillator cavity was operated in both stable and unstable configurations. Particular emphasis was placed on the full diagnosis of the scattered light and experiments were, therefore, designed to investigate the spatial, temporal and spectral characteristics of this unabsorbed fraction. The irradiation conditions under which the experiments were performed were investigated by analysis of the far field energy distribution. High absorption of the incident radiation was inferred from the low reflectivity level, the fraction of the incident radiation scattered out- side the solid angle of the focusing lens being accounted for, using a novel collecting mirror, or by the use of calibrated burn paper. Thus a total reflection was measured for the first time. A simple model was developed to enable the classical absorption contribution to the total absorption to be estimated, and results indicated that inverse bremsstrahlung absorption would be an important process for the conditions pertinent to the interac- tion. The contribution of anomalous absorption and scattering processes was estimated. Predicted cold electron temperatures and density scale lengths from the model, agreed well with those determined experimentally without the need to invoke flux inhibition. The spectral composition of the backscattered radiation in the region of the fundamental was investigated, and measured spectra were successfully interpreted by considering the stimulated Brillouin scattering process, and the Doppler effect of the expanding plasma corona. In particular, the depen- dence of the parametric growth rate on electron density was investigated by numerical solution of the ion acoustic wave dispersion relation. The angular distribution of the backscattered radiation was determined using annular apertures in the backscattered beam and the distribution found to be non-isotropic. Interpretation was based upon the resonance absorption process in a non-planar plasma geometry and invoked the retro reflecting nature of the stimulated Brillouin scatter mechanism. To investigate the effect of wave refraction in the underdense plasma (exhibiting a continuous density profile), a compact and readily used ray-tracing routine was developed and applied to plasmas with planar, rippled and simple concave or convex iso-density contours.

Cell adhesion molecules (CAMs) are important in prokaryotes and eukaryotes for cell–cell and cell–substratum interactions. The characteristics of adhesive proteins in the model diatom Phaeodactylum tricornutum were investigated by bioinformatic analysis and in vivo characterization. Bioinformatic analysis of the protein coding potential of the P. tricornutum genome used an amino-acid profile that we developed as a new system to identify uncharacterized or novel CAMs. Putative diatom CAMs were identified and seven were characterized in vivo, by generation of transgenic diatom lines overexpressing genes encoding C-terminal yellow fluorescent protein (YFP) fusion proteins. Three of these selected genes encode proteins with weak similarity to characterized proteins, a c-type lectin and two fasciclins, whereas the others are novel. The resultant cell lines were investigated for alterations in their adhesive ability. Whole cell-substratum adhesion strength was measured in a fully turbulent flow chamber, while atomic force microscopy was used to quantify the relative frequency of adhesion, as well as the length and strength of single molecules in the secreted mucilage. Finally, quartz crystal microbalance analysis characterized the visco-elastic properties and interaction of the mucilage–substratum interface. These combined studies revealed a range of phenotypes affecting adhesion, and led to the identification of candidate proteins involved in diatom adhesion. In summary, our study has for the first time combined bioinformatics and molecular physiological studies to provide new insights into diatom adhesive molecules.

Targeted ionizing radiation for the therapeutic treatment of malignancies or accidental exposure to whole body irradiation is known to cause injury to multiple organ systems, including intestinal injury, cardiovascular disease, cerebral injury, and general oxidative stress. Our group has established several biomarkers (i.e., tetrahydrobiopterin, citrulline, and oxidative stress indicators) of radiation injury to the intestines and brain. Taken together these biomarkers all point to oxidative stress as the central mechanism for injury to these organ systems. The biopterin metabolome is a key regulator of oxygen transfer and control of oxidative stress and a targeted metabolomics approach is likely to lead to a better mechanistic understanding of radiation-induced injury. But challenges to current bioanalytical methodologies have prevented a comprehensive determination of the biopterin metabolites and downstream metabolites (e.g., neurotransmitters, amino acids, and fatty aldehydes). We have developed uHPLC-MS/MS based methodology capable determining oxygen sensitive metabolites using a powerful antioxidant mixture.

Growing interest in the treatment and prevention of Molar/Incisor Hypomineralization (MIH) warrants investigation into the protein composition of hypomineralized enamel. Hypothesizing abnormality akin to amelogenesis imperfecta, we profiled proteins in hypomineralized enamel from human permanent first molars using a biochemical approach. Hypomineralized enamel was found to have from 3- to 15-fold higher protein content than normal, but a near-normal level of residual amelogenins. This distinguished MIH from hypomaturation defects with high residual amelo- genins (amelogenesis imperfecta, fluorosis) and so typified it as a hypocalcification defect. Second, hypo- mineralized enamel was found to have accumulated various proteins from oral fluid and blood, with dif- ferential incorporation depending on integrity of the enamel surface. Pathogenically, these results point to a pre-eruptive disturbance of mineralization involving albumin and, in cases with post-eruptive breakdown, subsequent protein adsorption on the exposed hydroxy- apatite matrix. These insights into the pathogenesis and properties of hypomineralized enamel hold significance for prevention and treatment of MIH.

Terpides vinculum (Traver) comb. n. Choroterpes vinculum Traver, 1947: 147. A second species originally placed in Choroterpes, C. vinculum Traver, 1947, is actually a species of Terpides. Terpides vinculum new combination was described from a single female imago from Costa Rica. The holotype is in the collections of Florida A&M University and is sufficient for generic placement, but more material from the type locality is needed to discover the male and expand the description past the original work of Traver (1947)., Published as part of Peters, J. G., Flowers, R. W., Hubbard, M. D., Dom��nguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), pp. 51-60 in Zootaxa 1054 on page 52, DOI: 10.5281/zenodo.170066, {"references":["Traver, J. R. (1947) Notes on Neotropical mayflies. Part II. Family Baetidae, Subfamily Leptophlebiinae. Revista de Entomologia, Rio de Janeiro, 18, 149 - 160."]}

Hermanella costalis (Nav��s) comb. n. (Figures 10���15) Thraulus costalis Nav��s, 1934: 26; Traver, 1960: 73. Thraulus costalis Nav��s, 1934, was described from Brazil (Bar��o Homem de Mello, Rio de Janeiro) from a male imago in poor condition. Traver (1960) stated that it was not Thraulus, but she did not reassign the species. Photographs of the holotype were prepared by C. Kutzscher of the Deutsches Entomologisches Institut im ZALF; P. Grant, who examined the holotype in 1985, provided additional notes on its genitalia. The wings (Fig. 10��� 11) and genitalia (Fig. 14���15) clearly place the species in the Hermanella generic complex as defined by Dom��nguez & Flowers (1989), but the condition of the styliger plate (blunt median protuberance and no paired dorsal projections) does not fit the definition of any described genus of the complex. Also, the ventral projection on each penis lobe is broad in Hermanella and slender in T. costalis. Although T. costalis is not a species of Hermanella in the restricted sense, we prefer not to establish a new genus until the nymphs are known, and thus treat this species as Hermanella costalis (Nav��s) new combination. A set of figures of the imago is included for purposes of future identification (Fig. 10��15). Note that the torn hind wing is hyaline and that the color in Fig. 11 is that of the body showing behind the wing. The only hind wing color is a brown basal strip in the costal area (Fig. 12)., Published as part of Peters, J. G., Flowers, R. W., Hubbard, M. D., Dom��nguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), pp. 51-60 in Zootaxa 1054 on page 55, DOI: 10.5281/zenodo.170066, {"references":["Navas, L. (1934) Insectos Suramericanos. Octava Serie. La Revista de la Academia de Ciencias de Madrid, 31, 9 - 28","Traver, J. R. (1960) Uruguayan mayflies-Family Leptophlebiidae: Part III. Revista de la Sociedad Uruguaya de Entomologia, 4, 73 - 85, 1 plate.","Dominguez, E. & Flowers, R. W. (1989) A revision of Hermanella and related genera (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) from Subtropical South America. Annals of the Entomological Society of America, 82, 555 - 573."]}

Choroterpes sp. Although there are no described species of Choroterpes known from South America, we have two nymphs of a species of Choroterpes from Antioquia Province, Colombia, collected in 1983 by Humberto Moreno of Medellin University. This record is not unexpected based on several records of Choroterpes s.s. from Mexico (Eaton 1892; Allen & Brusca 1973; Lugo��Ortiz & McCafferty 1996) and Costa Rica (Instituto Nacional de Biodiversidad collections, verified by R.W. Flowers). These are the first confirmed specimens of Choroterpes from the continent of South America., Published as part of Peters, J. G., Flowers, R. W., Hubbard, M. D., Dom��nguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), pp. 51-60 in Zootaxa 1054 on page 53, DOI: 10.5281/zenodo.170066, {"references":["Eaton, A. E. (1892) Class Insecta. Order Neuroptera. Fam. Ephemeridae. Biologia Centrali-Americana. Zoologia, pp. 1 - 16, plate I.","Allen, R. K. & Brusca, R. C. (1973) A new species of Choroterpes from Mexico (Ephemeroptera: Leptophlebiidae). Journal of the Kansas Entomological Society, 46, 137 - 139.","Lugo-Ortiz, C. & McCafferty, W. P. (1996) New species of Leptophlebiidae (Ephemeroptera) from Mexico and Central America. Annales de Limnologie, 32, 3 - 18."]}

Hagenulus marshalli sp. n. (Figures 3–9) This new species is represented by two unassociated male imagos in good condition from Ecuador. Because it represents a significant generic record for South America, it is described now even though nymphs and females are unknown. Previously, Hagenulus was believed to be restricted to the greater Antilles (Cuba, Haiti, Jamaica and Puerto Rico). Male imago (in alcohol). Body: 6.0– 6.5 mm, forewings 6.8–7.2 mm, hind wing 0.7 mm; foreleg 6.5–7.3 mm; cerci 12.5 mm. Head brown, dorsal portion of eyes meeting on meson of head, ocelli large. Pronotum light brown, heavily washed with blackish brown on median carina and laterally; meso­ and metanotum yellowish brown, pleural area extending anteriorly from forewing to pronotum washed with darker brown. Pro­ and mesosternum brown, mesobasisternum a little lighter, median margins of mesofurcasternal protuberances darker; metasternum heavily washed with blackish brown. Forewings: Sc brown, R a lighter brown, other longitudinal veins pale yellow­brown to hyaline, cross veins dark brown, surrounded by small blackish brown clouds in basal half of wing, clouds heaviest medially (Fig. 3), membrane of costal and subcostal area pale golden brown, the color fading to hyaline throughout remainder of wing membrane. Hind wings with reduced venation, veins and membrane pale yellow­brown to hyaline (Fig. 4–5); hind wings curved dorsally over scutellum (Fig. 6). Legs: ratios of foreleg segments to tibia (length of tibiae 2.9–3.1 mm): femur 0.46–0.49: tarsal segments 0.03; 0.32–0.34; 0.22–0.29; 0.13–0.14; 0.06–0.07; femur of foreleg brown, faded to pale brown basally and a little darker medially; remainder of foreleg segments with tibia pale yellowish brown and tarsal segments paler, a narrow dark brown band near apex of tibia, apical third to apical half of tarsal segments 2–4 darker brown, tarsal segments 1 and 5 without color markings; other legs with light yellowish brown femora, tibiae and tarsi paler. Abdominal tergum 1 light brown with narrow blackish brown posterior margin and lateral area; terga 2–5 hyaline with short, anterior sublateral dark streaks and blackish brown posterior band extended laterally and anteriorly as in Fig. 9; terga 6 and 7 with similar lateral patterns, although posterior bands reduced or absent; terga 8–10 opaque, light brown, with anterior blackish brown wash on terga 8–9, tergum 10 with only anterior submedian streaks. Abdominal sterna 1 and 2 heavily washed with blackish brown, wash continuing anterolaterally and anterosubmedially to sternum 3; sterna 4–8 with light blackish brown markings anterolaterally, marks progressively reduced in size on posterior sterna; sternum 9 light yellowish brown. Genitalia: styliger plate light brown; forceps pale yellow­brown; penes light brown, divided to near base, divergent, without spines, penes somewhat twisted as in Fig. 7–8. Cerci hyaline with blackish brown rings at articulations; median filament broken off and missing. Etymology: species is named for G. B. Marshall who assisted C. W. and L. B. O’Brien in the collection of many aquatic insects in South America. Material: Holotype, one male imago, Ecuador: 30 km W of Puyo, 27 –IV– 1978, L.B. & C. W. O’Brien; paratype, one male imago, same data as holotype. Deposited in collections of Florida A&M University. Diagnosis: Hagenulus marshalli sp. n. can be distinguished from all other described species of Hagenulus by the following characters: 1) fork of vein MP in the forewing not symmetrical (MP 2 attached to MP 1 at a cross vein as in Fig. 3); 2) penes without spines and slightly twisted (Fig. 7–8); and 3) color pattern as illustrated in Fig. 9. Discussion: The variation in foreleg ratios is mostly due to a relatively short third tarsal segment on one of the paratype forelegs. All forelegs were present, but only two other legs of a potential eight were found loose in the vial. The color pattern was the same on both, but it is not known if these were meso­ or metathoracic legs or to which specimen each belonged. Both are placed with the holotype. The intensity of color on abdominal segments 8–10 and on the mesosternum is lighter in the holotype than in the paratype. In the forewings, MP 2 is closely tied to MP 1 by a short cross vein, not joined symmetrically as in other species of Hagenulus. Nevertheless, this species is clearly a member of the Hagenulus group of genera because of the unique shape of the hind wing, the attachment of ICu 1 to CuP, and forceps typical for the genus. Kluge (1994) treated as subgenera all members of the Hagenulus ­group from Cuba previously treated as genera by Peters (1971), including Hagenulus, Borinquena, Careospina, and Traverina, and established two new subgenera, Poecilophlebia and Turquinophlebia. One species Hagenulus (Careospina) evanescens Kluge, 1994, has the characteristic hind wing of Hagenulus, penes somewhat similar to Hagenulus marshalli sp. n., a female with a short ovipositor, and nymphs without filter­feeding adaptations. In addition to wing characters, nymphs of the type species of Hagenulus (H. caligatus Eaton, 1882) and a second Cuban species (H. morrisonae Peters, 1971) have unique nymphs with filter­feeding adaptations. For this reason, Kluge (1994) removed all non­Cuban species of Hagenulus from the subgenus Hagenulus as their nymphs were not known with certainty, but he did not give them any new taxonomic placement. The same problem applies to Hagenulus marshalli sp. n., which also might represent a species of Careospina from which it would then be distinguished by the heavy coloration of the wing, the asymmetrical MP fork, and male eyes which meet dorsally. Staniczek (2003) described one new genus (Hagenulites) and three new species of the genus Borinquena from Dominican amber (Tertiary: Eocene to Miocene); genera and species described by Staniczek all possess a symmetrical MP fork. The asymmetrical MP fork in Hagenulus marshalli n. sp. eventually may indicate a new genus, but it seems best to delay such action until females and nymphs are known. At present, we prefer to retain described species of Hagenulus in this, the oldest genus, and to treat all of Kluge’s (1994) subgenera as genera until more extensive revisionary work is completed.

Tikuna bilineata (Needham & Murphy) comb. n. Choroterpes bilineata Needham & Murphy 1924: 48; Traver 1947: 156. The genus Tikuna was established by Savage et al. (2005) and Choroterpes atramentum Traver, 1947, was designated as the type species. Following this publication, two species from South and Central America remain incorrectly placed in Choroterpes. The first, Choroterpes bilineata Needham & Murphy, 1924, originally described from female imagos and male subimagos from La Chorrera, Putumayo Dist., Peru (now a part of Colombia), also belongs to the genus Tikuna, requiring the new combination Tikuna bilineata. The holotype and paratypes (Cornell University) were studied by one of us (H.M. Savage); additional specimens deposited at the U. S. National Museum of Natural History, Florida A&M University, and the Zoologische Sammlung des Bayerischen Staates were recorded from Brazil, Ecuador, Surinam, and Venezuela. New records for T. bilineata follow: BRAZIL: 1 female imago, Par�� State, Rio Cururu, about 100 km above Mission Cururu, at light, 25 ���I��� 1962, E.J. Fittkau. ECUADOR: Pastaza Prov., coll. J. Cohen: 37 female imagos, Tzapino, 32 km NE Tigueno, 1 �� 11 ' S, 77 �� 14 ' W, 400 m, 25 ���V��� 1976; 2 female imagos, Limoncocha (70 miles SE), 30 ���V��� 1976; 3 female imagos, Cononaco, 30 ���V��� 1976. SURINAM: 1 female imago, Wijne Dist., Moengo, Boven, 1 / 28 ���V��� 1927, P.P. Babiy. VENEZUELA: Zulia State: 1 male subimago, Dist. Mara, R��o Socuy, Campamento Corpozulia, 50 km W of Carrasquero, 6 / 7 ���X��� 1979, H.M. Savage & R.A. Romero; 1 female imago, Perija El Tucuco, Mission El Tucuco, R��o El Tucuco, 1 / 2 km from church, 1 / 5 ���X��� 1979, H.M. Savage., Published as part of Peters, J. G., Flowers, R. W., Hubbard, M. D., Dom��nguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), pp. 51-60 in Zootaxa 1054 on page 52, DOI: 10.5281/zenodo.170066, {"references":["Needham, J. G. & Murphy, H. E. (1924) Neotropical Mayflies. Bulletin of the Lloyd Library, 24, Entomological Series, 4, 3 - 79.","Traver, J. R. (1947) Notes on Neotropical mayflies. Part II. Family Baetidae, Subfamily Leptophlebiinae. Revista de Entomologia, Rio de Janeiro, 18, 149 - 160.","Savage, H. M., Flowers, R. W. & Porras V., W. (2005) Rediscovery of Choroterpes atramentum in Costa Rica, type species of Tikuna new genus (Ephemeroptera: Leptophlebiidae: Atalophlebiinae), and its role in the \" Great American Interchange. \" Zootaxa, 932, 1 - 14."]}

Ulmeritoides haarupi (Esben��Petersen) comb. n. (Figures 1���2) Thraulus haarupi Esben��Petersen, 1912: 337; Nav��s 1917: 188. Deleatidium haarupi; Ulmer, 1920: 115; 1938: 105; 1943: 15. Atalophlebioides haarupi; Traver, 1946: 423. Ulmeritus (Ulmeritus) haarupi; Traver, 1959: 5; Thew, 1960: 123; Dom��nguez, 1991: 160. Deleatidium vittatum Thew, 1960: 130. syn. n. Ulmeritoides fidalgoi Dom��nguez, 1995: 23. syn. n. Esben��Petersen (1912) originally described Thraulus haarupi from Bompland, Argentina, from a damaged female which lacked forelegs and cerci. He suggested that this represented a new genus but postponed any action because he did not know the male. Traver (1959) described a female from Uruguay that she attributed to this species although it differed in some characters from the description of T. haarupi��� particularly size, absence of a median longitudinal line on the mesonotum, coloration of the prothorax (not discussed by Esben��Petersen), and shading on the basal, ventral margin of the metathoracic femur. This species was also treated in Deleatidium by Ulmer (1920, 1938, 1943) and Atalophlebioides by Traver (1946) based on the fact that it was not Thraulus. In 1956, Traver established the genus Ulmeritus, which she later divided into three subgenera (Traver 1959): Ulmeritus, Ulmeritoides, and Pseudulmeritus. She placed T. haarupi in Ulmeritus s.s. based on the hind wing. Ulmeritoides was raised to generic status in 1991 and the subgenus Pseudulmeritus was synonymized with Ulmeritoides (Dom��nguez 1991). In 1960, Thew described Deleatidium vittatum from Nova Teut��nia, Santa Catarina State, Brazil, from two female imagos. He gave no illustrations, but did give a detailed description of coloration. This description matches Traver's (1959) female " U. haarupi " from Uruguay, except that Thew did not mention the heavier basal shading on the metathoracic femur described by Traver. In 1995, Dom��nguez described another species, Ulmeritoides fidalgoi, from male and female imagos and nymphs, also from Bompland, Argentina. We (J.G. Peters and R.W. Flowers) have examined the holotypes of Thraulus haarupi and Deleatidium vittatum, and four paratype females of Ulmeritoides fidalgoi. Venation of the holotype of Thraulus haarupi is as illustrated by Esben��Petersen (1912), but all color has faded. The holotype of Deleatidium vittatum is an Ulmeritoides in good condition and the wing venation, reddish brown costal strip, and heavy costal cross veins are still clear; however, body colors are faded. Thus, it is necessary to use the original descriptions by Esben��Petersen (1912) and Thew (1960) for most details of coloration. The paratypes of Ulmeritoides fidalgoi retain a good color pattern, including caudal filaments with dark annulations as described by Thew for Deleatidium vittatum. The range of forewing length (9 mm to 11 mm) for described and examined specimens of Ulmeritoides fidalgoi encompasses the sizes of Ulmeritus haarupi and Deleatidium vittatum, and the costal wing markings are identical for all. All described female pronota appear to fall within the range of U. fidalgoi, although these details were not given by Esben��Petersen (1912). The presence of a fine longitudinal dark brown line on the mesonotum of U. haarupi represents a variation found in U. fidalgoi, and the median longitudinal suture may appear lighter or darker depending on source of illumination. The position of the costal projection and length of vein Sc of hind wings differs in males and females; in the hind wing of U. haarupi this falls within the variation visible for U. fidalgoi (Fig. 1���2). Traver���s (1959) concept of U. haarupi and Thew's description of Deleatidium vittatum match Ulmeritoides fidalgoi exactly���with the single exception that Thew did not mention the extent of shading on the ventral base of the metathoracic femora. As the extent of this shading seems to be the only character separating these species, and it is often undescribed or variable, we consider U. haarupi, D. vittatum, and U. fidalgoi to be conspecific, with Ulmeritoides haarupi the senior name., Published as part of Peters, J. G., Flowers, R. W., Hubbard, M. D., Dom��nguez, E. & Savage, H. M., 2005, New records and combinations for Neotropical Leptophlebiidae (Ephemeroptera), pp. 51-60 in Zootaxa 1054 on pages 53-54, DOI: 10.5281/zenodo.170066, {"references":["Esben-Petersen [P.] (1912) New and little-known species of Ephemeridae from Argentine. (Neuropt.). Deutsche Entomologische Zeitschrift, 12, 333 - 342.","Navas, L. (1917) Algunos insectos Neuropteros de la Argentina. Physis, 3, 186 - 196.","Ulmer, G. (1920) Ubersich uber die Gattungen der Ephemeropteren, nebst Bemerkungen uber einzelne Arten. Stettiner Entomologische Zeitung, 81, 97 - 144.","Traver, J. R. (1946) Notes on Neotropical mayflies. Part I. Family Baetidae, Subfamily Leptophlebiinae. Revista de Entomologia, Rio de Janeiro, 17, 418 - 436.","Traver, J. R. (1959) Uruguayan mayflies-Family Leptophlebiidae: Part I. Revista de la Sociedad Uruguaya de Entomologia, 3, 1 - 13, 3 plates.","Thew, T. B. (1960) Taxonomic studies on some Neotropical leptophlebiid mayflies (Ephemeroptera: Leptophlebiidae). Pan-Pacific Entomologist, 36, 119 - 132.","Dominguez, E. (1991) The status of the genus Ulmeritus (Ephemeroptera: Leptophlebiidae: Atalophlebiinae) and related taxa. In: Alba-Tercedor, J. & Sanchez-Ortega, A. (Ed.), Overview and Strategies of Ephemeroptera and Plecoptera, Sandhill Crane Press, Gainesville, FL, pp. 157 - 167.","Dominguez, E. (1995) Cladistic analysis of the Ulmeritus-Ulmeritoides group (Ephemeroptera, Leptophlebiidae), with descriptions of five new species of Ulmeritoides. Journal of the New York Entomological Society, 103, 15 - 38.","Ulmer, G. (1938) Chilensiche Ephemeropteren, hauptsachlich aus dem Deutschen Entomologischen Institut, Berlin - Dahlem. Arbeiten uber Morphologische und Taxonomische Entomologie aus Berlin - Dahlem, 5, 85 - 108.","Ulmer, G. (1943) Alte und neue Eintagsfliegen (Ephemeropteren) aus Sud- und Mittelamerika. Stettiner Entomologische Zeitung, 104, 14 - 46."]}