Eupithecia concostivexa, Mironov & Šumpich, 2022

Mironov, Vladimir & Šumpich, Jan, 2022, New species of the genus Eupithecia (Lepidoptera, Geometridae) from China Part IX, Zootaxa 5219 (3), pp. 276-286 : 281

Eupithecia concostivexa sp. n.

( Figs 4 , 10 , 25 )

Type material: Holotype, ♀, China, W. Sichuan, SW slopes of Erlang Shan Mt., 30 km from Luding , 29°49.39ʺ N, 102°15.08ʺ E, 21.x. 2019, 1920 m, A. Saldaitis leg. Gen. prep. J. Procházka 20172; Photo J. Šumpich 22/139 ( NMPC).

Diagnosis. This species also belongs to the proterva species group ( Inoue 1979; Mironov & Galsworthy 2014) on the basis of the structure of female genitalia. The worn state of the unique holotype does not allow a clear external diagnosis, though the very elongate discal dot is noteworthy. The female genitalia are rather similar to those of the Taiwanese E. hashimotoi Inoue, 1988 , but the colliculum is broader, the antrum membranous and the shape of the eighth tergite is different.

Description. Adult. ( Figs 4 , 10 ). Female. Wingspan 19.5 mm (without fringe), fore wing 11.0 mm (without fringe). Head and notum covered with greyish scales. Fore wing with slightly bowed costal margin. Ground colour pale brownish grey; transverse lines not visible; discal dot black, narrow and elongate. Hind wing with shallowly concave termen in the middle, anal area darker than rest of wing; discal dot small, ovoid. Fringes on all wings missing.

Female genitalia ( Fig. 25 ). Bursa copulatrix rather ovoid, about ½ densely covered with small spines along one side from base of ductus seminalis to colliculum. Ductus bursae not expressed. Ductus seminalis broadened near base, attached to corpus bursae near anterior part. Colliculum collar-like, short and broad. Antrum membranous, relatively short and broad. Tergite A8 square. Anterior and posterior apophyses rather short and narrow. Papillae anales large, ovoid.

Male. Unknown.

Bionomy. Host plant unknown. The holotype was collected by light in the third decade of October at an elevation of 1920 m.

Distribution. China. Known only from Sichuan province.

Etymology. The name “ concostivexa ” is an anagram of the species name “ costiconvexa ”.

Note. The single type specimen is very worn.

Figures

FIGURES 1–6. Eupithecia adults, China (scale bar = 10 mm). 1. E. remissata sp. n. Holotype; 2. E. fericlava sp. n. Holotype; 3. E. florianii sp. n. Holotype; 4. E. concostivexa sp. n. Holotype; 5. E. voraria sp. n. Holotype; 6. E. khama sp. n. Holotype.

FIGURES 7–12. Heads of Eupithecia species, China, holotypes. 7. E. remissata sp. n.; 8. E. fericlava sp. n.; 9. E. florianii sp. n.; 10. E. concostivexa sp. n.; 11. E. voraria sp. n.; 12. E. khama sp. n.

FIGURES 22–26. Female genitalia of Eupithecia species (scale bar = 1mm). 22. E. remissata sp. n.; 23. E. fericlava sp. n.; 24. E. florianii sp. n.; 25. E. concostivexa sp. n.; 26. E. khama sp. n.; a—frontal view; b—view from a different angle; c—output of ductus seminalis of the same genitalia preparation.