Gnypeta carbonaria (Mannerheim)

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 : 56-58

publication ID	https://doi.org/ 10.3897/zookeys.2.4
publication LSID	lsid:zoobank.org:pub:664C49F1-5384-43C4-8BF1-CE76AC11D32E
DOI	https://doi.org/10.5281/zenodo.3792852
persistent identifier	https://treatment.plazi.org/id/D43E034B-FFB0-415C-FF17-FB9A6661FE37
treatment provided by	Plazi
scientific name	Gnypeta carbonaria (Mannerheim)
status

Treatment

13. Gnypeta carbonaria (Mannerheim) View in CoL

( Figs 15 View Figs 15-20 , 33 a, b View Figs 21-38 , 139-147 View Figs 139-147 , 199 View Fig )

Bolitochara carbonaria Mannerheim 1830: 75 View in CoL ; Palm 1966: 141; Smetana 2004: 489. TYPE LOCALITY: FINLAND: in original description: “Ad Willnäs in Finlandia australi semel capta”. Holotype not examined.

Material examined

Specimens are listed in Appendix A.

Diagnosis

This species can be recognized by the following combination of characters: body length 2.7-3.0 mm ( Fig. 15 View Figs 15-20 ); elytra at suture slightly longer than pronotum and about 1/4 wider than maximum width of pronotum ( Fig. 15 View Figs 15-20 ); abdomen at base distinctly narrower than elytra and subparallel ( Fig. 15 View Figs 15-20 ); antennal article 4 strongly elongate, 5-7 moderately elongate, 8-10 subquadrate to slightly transverse ( Figs 33 a, b View Figs 21-38 ); median lobe of aedeagus with apical part triangularly produced with sinuate edges in lateral

view ( Fig. 139 View Figs 139-147 ); spermatheca club-shaped, apical part of capsule approximately spherical connected to narrow and short tubular part ( Fig. 145 View Figs 139-147 ); stem narrow, tubular, short and slightly swollen posteriorly ( Fig. 145 View Figs 139-147 ); male tergite 8 truncate apically and with slight apical emargination ( Fig. 143 View Figs 139-147 ); female sternite 8 with small apical emargination ( Fig. 147 View Figs 139-147 ). The antennal proportions; 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 2.7-3.0 mm; dark brown to black, elytra often rust brown medially, and legs and/or tarsi rust brown ( Fig. 15 View Figs 15-20 ); integument moderately glossy; pubescence yellowish grey and moderately long and dense; antennal article 4 strongly elongate, 5-7 moderately elongate, 8-10 subquadrate to slightly transverse ( Figs 33 a, b View Figs 21-38 ); head and pronotum of about the same width ( Fig. 15 View Figs 15-20 ); 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 1/4 wider than maximum width of pronotum, pubescence directed obliquely postero-laterad, in wavy pattern medially on each side of disc ( Fig. 15 View Figs 15-20 ); abdomen subparallel, distinctly narrower than elytra at base ( Fig. 15 View Figs 15-20 ); metatarsus with basal article slightly longer than the following article. Male. Tergite 8 transverse and truncate apically with small median emargination ( Fig. 143 View Figs 139-147 ). Sternite 8 elongate and broadly rounded apically ( Fig. 144 View Figs 139-147 ). Median lobe of aedeagus with triangularly produced apical part of tubus in lateral view ( Fig. 139 View Figs 139-147 ); bulbus moderately large in dorsal view ( Fig. 140 View Figs 139-147 ); internal sac with complex structures as illustrated ( Figs 139-141 View Figs 139-147 ). Female. Tergite 8 truncate apically ( Fig. 146 View Figs 139-147 ). Sternite 8 broadly rounded posteriorly with small median emargination ( Fig. 147 View Figs 139-147 ). Spermatheca with tubular and short, club-shaped capsule ( Fig. 145 View Figs 139-147 ); stem short and broadly tubular ( Fig. 145 View Figs 139-147 ).

Distribution (Fig. 199)

Gnypeta carbonaria is a Holarctic species and is here reported from Canada and Alaska for the first time. It was previously known from the Palaearctic region and was recorded from Europe, Northern Africa, and Asia including eastern and western Siberia ( Smetana 2004). We discovered this species to be transcontinental in North America with records from Alaska, Northwest Territories, Alberta, Saskatchewan, Manitoba, Ontario, Quebec, and New Brunswick.

Collection and habitat data

In Canada and Alaska, adults were collected in July and August from wet ground near a bog, in rotten fungus, and in a UV light trap.

Comments

We compared North American specimens of G. carbonaria with those from Sweden and found no distinct external or genital morphological differences between the two populations. We also compared the newly designated female lectotype of Gnypeta brunnescens Casey with Canadian and Swedish specimens of G. carbonaria and found no differences between female genital features. However, Casey’s type of G. brunnescens differs from both populations by the light brown body colour instead of dark brown or black and by a slightly different pubescence pattern on the pronotum, which may be caused by the preparation of the specimen. Due to these differences, we hesitate to formally synonymize G. brunnescens with G. carbonaria . Additional specimens of G. brunnescens are needed from the type locality to confirm its taxonomic status.