Apatopsis Semenov, 1891

Chigray, Svetlana N., Nabozhenko, Maxim V., Chigray, Ivan A. & Abakumov, Evgeny V., 2022, A revision of the Palaearctic Pimeliini (Coleoptera: Tenebrionidae): a comparative analysis and systematic position of Eastern European and Asian taxa with dorso-lateral eyes, European Journal of Taxonomy 809, pp. 1-71 : 6-13

publication ID	https://doi.org/ 10.5852/ejt.2022.809.1719
publication LSID	lsid:zoobank.org:pub:A754493E-5466-4479-B515-AABEDDE09D93
DOI	https://doi.org/10.5281/zenodo.6449858
persistent identifier	https://treatment.plazi.org/id/03FC8666-556F-FF8A-5067-BE00FDB3FDAB
treatment provided by	Felipe
scientific name	Apatopsis Semenov, 1891
status

Treatment

Genus Apatopsis Semenov, 1891

Figs 1A View Fig , 8A–D View Fig , 14 View Fig , 23A View Fig , 26F View Fig , 27A–B View Fig

Apatopsis Semenov, 1891: 368 , 370.

Apatopsis – Semenov 1903a: 12. — Semenov-Tjan-Shansky 1907: 177, 179. — Reitter 1893: 204, 249. — Gebien 1940: 3. — Kühnelt 1957: 85. — Ren & Dong 2001: 269.

Type species

Apatopsis grombczewskii Semenov, 1891 , by subsequent designation ( Semenov 1903a).

Species included

Apatopsis grombczewskii Semenov, 1891 [= A. conradti Semenov, 1891 , syn. resurr.].

Notes

Semenov described two species in this genus but did not designate a type species. Later, he placed Apatopsis conradti Semenov, 1891 as a junior synonym of A. grombczewskii Semenov, 1891 ( Semenov 1903a; Semenov-Tjan-Shansky 1907) and clearly indicated that the genus Apatopsis includes only the one latter species. This indication ( Semenov 1903a) corresponds to the subsequent designation of the type species of the genus according to article 69.1.1 of ICZN (1999). Gebien (1937) also listed Apatopsis as monotypical genus. We do not know why these two species of Apatopsis were given as valid in both editions of the Palaearctic Catalogue ( Löbl et al. 2008; Iwan et al. 2020) and we here resurrect the synonymy after the examination of the lectotypes of these conspecific taxa: A. grombczewskii Semenov, 1891 = Apatopsis conradti Semenov, 1891 , syn. resurr.

Diagnosis

Body brown, elongate-oval ( Fig. 1A–B View Fig ), completely covered with goldish, lanceolate, longitudinally striated scales ( Fig. 8A–D View Fig ) and sparse, long, erected, yellowish setae ( Fig. 8C–D View Fig ), body length 10– 12 mm. Eyes small, circular, located almost dorsally; surface behind eyes not covered by anterior margin of pronotum. Head covered with short, sparse projecting thin setae.

Pronotum transverse (width 1.8× length). Anterolateral angles of pronotum weakly projecting, obtuse, not extending to posterior margin of eyes. Disc of pronotum ( Figs 1A View Fig , 8A View Fig ) moderately convex, with suture-like longitudinal median line, surface of pronotum without depressions. Prothorax almost cylindrical. Prosternum without transverse triangular depression along anterior margin, short, 1.8× as long as transverse diameter of one procoxa. Prosternal process short (ratio of length of prosternal process to its maximum width: 3:2), not raised between procoxae.

Elytra translucent (see in transmitted light), with wide, oval depressions on lateral sides, surface of depressions densely covered with very long yellowish setae ( Fig. 1A View Fig ). Surface of elytra with longitudinal rows of very small sparse granules; each granule with long, erect, yellowish setae ( Fig. 8D View Fig ). Scutellar

shield almost concealed by base of pronotum. Transverse length of metacoxae 1.2× as long as intercoxal process of abdominal ventrite 1.

Trochanters with long sparse setae. Meso- and metafemora weakly curved outward, protibiae straight, meso- and metatibiae weakly curved outward, covered with short, yellowish setae. Protibiae ( Figs 26F View Fig , 27A–B View Fig ) widened at apex, outer anterior margin forms projecting process with outer apical tooth. Outer margin of protibiae covered with conical spinose tubercles, ventral surface of protibiae with long dense setae. Protibial terminal spurs elongated, extending to base of protarsomere 5, mesotibial terminal spursextending to apex of mesotarsomere 2, metatibial terminal spurs extending to midlength of metatarsomere 1. Outer and inner protibial terminal spurs subequal in length, inner meso- and metatibial terminal spurs longer than outer ones, spurs flattened, acutely angulate at apex. Tarsi elongated, flattened from sides, protarsi with short spinose setae ventrally and more elongate fine dense setae dorsally, mesotarsi with very long erected setae dorsally and shorter setae ventrally, metatarsi with very long and dense suberected setae dorsally and very short recumbent setae ventrally. Tarsal claws elongated, thin, weakly curved outward.

Male genitalia

Inner sternite VIII ( Fig. 14H View Fig ) weakly sclerotized on lateral margins and membranous in middle, densely covered with short setae; setae longer along posterior margin; anterior margin arcuately emarginated; gland absent (at least was not observed).

Rods of spiculum gastrale ( Fig. 14G View Fig ) arcuately connected at apex; derivatives of inner sternite IX ladleshaped covered with sparse setae.

Basal piece of tegmen ( Fig. 14A–C View Fig ) 1.2–1.4× as long as apical piece, rounded at base, widest in basal third. Apical piece bare, rounded at apex, strongly curved ( Fig. 14C View Fig ), ventral apophyses of apical piece very short ( Fig. 14A View Fig ), projecting and elevated, dorsal apophyses long ( Fig. 14B View Fig ), triangular, acutely angulate at apex, not merged; median lobe ( Fig. 14D–F View Fig ) strongly curved, bifurcated at base, membrane between baculi weakly sclerotized in basal third, baсuli at apex dorsally rolled into tube, not merged, apex narrowly rounded.

Female genitalia

Spiculum ventrale ( Fig. 14I View Fig ) very short and thickened, with short common stem, rods connected by membranous plate at apex; apophyses of sternite VIII long, acutely angulate at apex.

Ovipositor ( Fig. 14J–L View Fig ) weakly sclerotized, very short, transverse. Paraproct short, with narrow baculi; coxite lobes not merged; lobe IV transformed into weakly sclerotized and very densely pubescent pair plate, rounded at apex; lobe III forms additional elongate apical process, similar to lobe IV; lobes I–II with shorter setae; lobe I with oblique, narrow baculi, widened at apices. Proctiger wide, with straight apical margin and densely pubescent middle, baculi of proctiger strongly widened along all length.

Female genital ducts ( Fig. 23A View Fig )

Vagina sacciform, narrower before oviduct and after spermatheca, apical part of vagina elastically curved. Spermatheca consists of six tubes: two tubes flow into vagina independently, other four tubes combined into bundle with common base; two tubes (one independent, one in bundle) bifurcated. Accessory gland with four constrictions, one (as narrow tube) at base and three others in middle.

Distribution

China (Taklamakan Desert).