Gnypeta uteana (Casey)

Klimaszewski, Jan, Savard, Karine, Pelletier, Georges & Webster, Reginald, 2008, Species review of the genus Gnypeta Thomson from Canada, Alaska and Greenland (Coleoptera, Staphylinidae, Aleocharinae): systematics, bionomics and distribution, ZooKeys 2 (2), pp. 11-84 : 54-56

12. Gnypeta uteana (Casey)

( Figs 14 , 32 a, b , 131-138 , 196 )

Tachyusa uteana Casey 1911: 169 . As Gnypeta: Moore and Legner 1975: 422 . LECTOTYPE (female): UNITED STATES OF AMERICA: Utah [southwestern Utah], Weidt, uteana Csy [Casey]; Type USNM 38883, Casey Bequest 1925; Gnypeta uteana Csy. Lectotypus Lohse des.1988 [designation not published]; Lectotype, female, Tachyusa uteana Casey [= Gnypeta ], des. Klimaszewski 2007 (USNM). Present designation. Examined.

Gnypeta boulderensis Casey 1911: 167 . As synonym of G. helenae: Moore and Legner 1975: 422 . LECTOTYPE (female): UNITED STATES OF AMERICA: Boulder Co., Boulder Co.; boulderensis Csy [Casey’s handwriting]; Type USNM, 38870 (USNM). Present designation. Examined. New synonymy.

Gnypeta punctatula Casey 1906: 194 . As synonym of G. helenae: Moore and Legner 1975: 422 . LECTOTYPE (female): UNITED STATES OF AMERICA: California, Pomona Mts., Sept. [ember]; [in original description: H.C. Fall]; punctatula Csy [Casey’s handwriting]; Type USNM 38869; Casey bequest 1925 (USNM). Present designation. Examined. New synonymy.

Material examined

Specimens are listed in Appendix A.

Diagnosis

This species can be recognized by the following combination of characters: body length 2.6-2.8 mm ( Fig. 14 ); elytra at suture slightly longer than pronotum and about 1/3 wider than maximum width of pronotum ( Fig. 14 ); abdomen at base distinctly narrower than elytra and subparallel ( Fig. 14 ); antennal article 4 strongly elongate, 5 subquadrate or slightly elongate, 7-10 slightly transverse ( Figs 32 a, b ); median lobe of aedeagus with apical part moderately broad and produced in lateral view ( Fig. 130 ); spermatheca C-shaped, with broadly tubular and mushroom-shaped capsule ( Fig. 136 ); stem broadly tubular and short ( Fig. 136 ); male tergite 8 truncate apically and with slight apical emargination ( Fig. 134 ); female sternite 8 with strong median apical emargination ( Fig. 138 ). The slim, strongly glossy body, basal article of metatarsus almost as long as the two following articles combined; 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.

Description

Body length 2.6-2.8 mm; uniformly dark brown to black, elytra often rust brown medially, and tibiae and/or tarsi rust brown ( Fig. 14 ); integument strongly glossy; pubescence yellowish grey and moderately long and dense; antennal article 4 strongly

elongate, 5 subquadrate or slightly elongate, 7-10 slightly transverse ( Fig. 32 a, b ); head and pronotum of about the same width ( Fig. 14 ); 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 slightly longer than pronotum and about 1/3 wider than maximum width of pronotum, pubescence directed obliquely postero-laterad, in wavy pattern medially on each side of disc ( Fig. 14 ); abdomen subparallel, distinctly narrower than elytra at base ( Fig. 14 ); metatarsus with basal article strongly elongate and about as long as the two following articles combined. Male. Tergite 8 transverse and truncate apically with slight median emargination ( Fig. 134 ). Sternite 8 elongate and broadly rounded apically ( Fig. 135 ). Median lobe of aedeagus with triangular and moderately broad apical part of tubus in lateral view ( Fig. 130 ); bulbus moderately enlarged in dorsal view ( Figs 131, 132 ); internal sac with structures as illustrated ( Figs 130-132 ). Female. Tergite 8 truncate apically ( Fig. 137 ). Sternite 8 broadly rounded posteriorly with deep median emargination ( Fig. 138 ). Spermatheca with tubular and short, mushroom-shaped capsule ( Fig. 136 ); stem short and broadly tubular ( Fig. 136 ).

Distribution (Fig. 196)

Gnypeta uteana is a western Nearctic species known from southwestern Utah, Colorado and California ( Casey 1906, 1911). We report this species for the first time from the province of Alberta.

Collection and habitat data

Adults from Alberta were collected in July and August, some from altitudes up to 2040 m. Habitat data not available.

Figures

Figs 9-14. Gnypeta species: 9, G. brevicornis; 10, G. caerulea; 11, G. lohsei; 12, G. crebrepunctata; 13, G. manitobae [apical part of abdomen removed]; 14, G. uteana. Scale = 1 mm

Figs 21-38. Antennae of Gnypeta species: G. ashei: 21a. male, 21b. female; G. brincki: 22a. male, 22b. female; G. atrolucens: 23a. male, 23b. female; G. sellmani: 24a. male, 24b. female; G. dentata: 25a. male, 25b. female; G. groenlandica: 26a. male, 26b. female: G. brevicornis: 27a. male, 27b. female; G. caerulea: 28a. male, 28b. female; G. lohsei: 29a. male, 29b. female; G. crebrepunctata: 30a. male, 30b. female; G. manitobae: 31b. female; G. uteana: 32a. male, 32b. female; G. carbonaria: 33a. male, 33b. female; G. helenae: 34a. male, 34b. female; G. canadensis: 35a. male, 35b. female; G. nigrella: 36a. male, 36b. female; G. saccharina: 37a. male, 37b. female; G. minuta: 38a. male, 38b. female. Scale = 1 mm

Figs 130-138. Genital structures of Gnypeta uteana: 130, median lobe of the aedeagus in lateral view, 131, dorsal view, 132, ventral view; 133, paramere; 134, male tergite 8; 135, male sternite 8; 136, spermatheca; 137, female tergite 8; 138, female sternite 8.

Fig. 196. Collection localities in Canada of G. brevicornis and G. uteana.