Gnypeta helenae Casey 1906
Creators: name: Klimaszewski, Jan
name: Savard, Karine
name: Pelletier, Georges
name: Webster, Reginald
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Gnypeta
Gnypeta helenae

description: 14. <i>Gnypeta helenae</i> Casey (Figs 16, 34 a, b, 148-155, 194) <i>Gnypeta helenae</i> Casey 1906: 193; Moore and Legner 1975: 422. <b>TYPE LOCALITY:</b> UNITED STATES OF AMERICA: Montana, Kalispell, H.F. Wickham (USNM). Holotype not examined, type on loan. <i>Gnypeta deserticola</i> Casey 1906: 193. Synonymized by Moore and Legner 1975: 422. <b>LECTOTYPE</b> (male): UNITED STATES OF AMERICA: Ari. [zona]; [in orig. description: Benson, G.W. Dunn]; <i>deserticola</i> Csy [Casey’s handwriting]; Type USNM, 38860; Casey bequest 1925; Lectotypus, male, <i>Gnypeta deserticola</i> Casey, des. V.I. Gusarov 2000 [designation not published] (USNM). Present designation. Examined. Synonymy confirmed. <i>Gnypeta oregona</i> Casey 1906: 199. Synonymized by Moore and Legner 1975: 422. <b>LECTOTYPE</b> (male): UNITED STATES OF AMERICA: Oregon, Portland, [H.F. Wickham]; <i>oregona</i> Csy [Casey]; Type USNM 38859; Casey determ. <i>helenae</i> 2; Lectotypus <i>Gnypeta oregona</i> Casey, V.I. Gusarov des. 2002 [designation not published]; present designation label (USNM). Examined. <b>PARALECTOTYPES</b>: Oregon, Portland; [Casey des. male = female]; <i>oregona</i> 2, Paratype USNM 38851 (USNM) female; Portland, <i>oregona</i> 3, Paratype USNM 38859 (USNM) female. Examined. Synonymy confirmed. <b>Material examined</b> Specimens are listed in Appendix A. <b>Diagnosis</b> This species can be recognized by the following combination of characters: body length 2.7-3.0 mm (Fig. 16); elytra at suture as long as pronotum or slightly longer and about 1/4 wider than maximum width of pronotum (Fig. 16); abdomen at base distinctly narrower than elytra and subparallel (Fig. 16); antennal article 4 strongly elongate, 5-10 moderately to strongly elongate (Figs 34 a, b); median lobe of aedeagus with apical part narrowly triangularly produced with sinuate edges in lateral view (Fig. 148); spermatheca S-shaped, capsule pipe-shaped and consisting of a small cylindrical apical part angularly connected with a narrowly elongate sinuate stem (Fig. 153); male tergite 8 truncate apically and with slight apical emargination (Fig. 151); female sternite 8 with large apical emargination (Fig. 155). The elongate antennal articles 1-10; distinct shape of spermatheca; medially emarginated female sternite 8, and the shape of the apical portion of the median lobe of the aedeagus are the best characters for recognition of this species. This species is very similar to <i>G. canadensis</i> sp. nov., from which it may be distinguished with certainty by the genital differences: spermatheca with thicker posterior part of capsule and stem, and broader and less ventrally produced apical part of median lobe. <b>Description</b> Body length 2.7-3.0 mm; dark brown to black, elytra and legs and/or tarsi often rust brown (Fig. 16); integument strongly glossy; pubescence yellowish grey and moderately long and dense; antennal article 4 strongly elongate, 5-10 moderately to strongly elongate (Figs 34 a, b); head and pronotum of about the same width (Fig. 16); elytra and abdomen (less so) wider than either head or pronotum; head rounded posteriorly; pronotum broadest in apical third, pubescence directed anterad along midline and laterad elsewhere; elytra at suture as long as pronotum or slightly longer and about 1/4 wider than maximum width of pronotum, pubescence directed obliquely postero-laterad, in wavy pattern medially on each side of disc (Fig. 16); abdomen subparallel, distinctly narrower than elytra at base (Fig. 16); metatarsus with basal article slightly longer than the following article. <b>Male</b>. Tergite 8 transverse and truncate apically with small median emargination (Fig. 151). Sternite 8 elongate and broadly rounded apically (Fig. 152). Median lobe of aedeagus with narrowly produced apical part of tubus in lateral view (Fig. 148); bulbus moderately enlarged in dorsal view (Fig. 149); internal sac with structures as illustrated (Figs 148, 149). <b>Female</b>. Tergite 8 truncate apically (Fig. 154). Sternite 8 broadly rounded posteriorly with large median emargination (Fig. 155). Spermatheca S-shaped, capsule pipe-shaped and consisting of a small cylindrical apical part angularly connected to a narrow tubular and sinuate stem (Fig. 153). <b>Distribution</b> (Fig. 194) <i>Gnypeta helenae</i> is a western Nearctic species recorded from Montana (Casey 1906), and also recorded under two synonymic names from Arizona and Oregon (Casey 1906; Moore and Legner 1975). We report this species for the first time from Canada in Alberta and British Columbia. <b>Collection and habitat data</b> Adults were collected in June, July, August and October, some from silt around <i>Typha</i> on a river bank. <b>Comments</b> The late Gustav Adolf Lohse (Hamburg, Germany) worked on revision of Nearctic <i>Gnypeta</i> but was not able to complete his project. One CNC specimen of this species bears his identification label as “ <i>G. glabra</i> Lohse ” [manuscript name].
description: Published as part of <i>Klimaszewski, Jan, Savard, Karine, Pelletier, Georges &amp; Webster, Reginald, 2008, Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution, pp. 11-84 in ZooKeys 2 (2)</i> on pages 59-62, DOI: 10.3897/zookeys.2.4, http://zenodo.org/record/576410
description: {"references": ["Casey TL (1906) Observations on the staphylinid groups Aleocharinae and Xantholinini, chiefly of America. Transactions of the Academy of Sciences of St. Louis 16: 125 - 434.", "Moore I., Legner EF (1975) A catalogue of the Staphylinidae of America north of Mexico (Coleoptera). University of California Division of Agricultural Sciences. Special Publication No. 3015: 1 - 514."]}