A systematic revision of the genus Gnophopsodos Wehrli, 1945, with description of two new species (Lepidoptera: Geometridae) Author Erlacher, Sven Author Erlacher, Josepha text Zootaxa 2016 4169 3 435 456 journal article 10.11646/zootaxa.4169.3.2 9c0bf858-c899-45a8-824d-d6c9252185ea 1175-5326 267918 317C18E8-BC46-4984-9EF5-0F30BF5376B9 4. Gnophopsodos hilmari spec. nov. (adults Pl. 1, Figs 4 a, 4b; male gen. Pl. 3, Fig. 4 c) Locus typicus: Uzbekistan , western Tian Shan , Tschatkalski Chrebet , 70 km E Tashkent , Bolshoy Chimgan Mountain , 2800 m . Deposition of holotype : MNC. Material examined. Type material. Holotype Ƌ (Pl. 1, Fig. 4 a; Pl. 3, Fig. 4 c): [ Uzbekistan :] ‘UdSSR/ Usbekische SSR | westl. TIENSHAN | Tschatkalski Chrebet | Bolschoi Tschimgan 2800 m | TASCHKENT 70 km O | 12. Juli 1984 | leg. Dr . B. Mueller Berlin’ , ‘SE–451 Ƌ | gen. prep. | Erlacher, 2011’, <red label> ‘ HOLOTYPE Ƌ | Gnophopsodos hilmari | Erlacher & Erlacher , 2016’, MNC. Paratypes 2Ƌ: Kyrgyzstan : 1Ƌ (Pl. 1, Fig. 4 b), Tian Shan , Ala–Artscha national park, 3500–4000 m , 10.vii.1979 , leg. L. & Kr. Krušek , gen. prep. SE–489, barcode id. SE–MNC– Lep –01278, BIN BOLD :ABW1867, SMM . Uzbekistan : 1Ƌ, 70 km E Tashkent , Bolshoy Chimgan Mountain , 41°17’N / 69°58’E , 2800 m , 12.vii.1984 , leg. B. Müller , gen. prep. SE–652, barcode id. BMB – Lep –00358, MBB. Description. Adults (Fig. Pl. 1, Figs 4 a, 4b). Measurements. Wingspan: 30 mm (Ƌ); forewing length: 18 mm (Ƌ); forewing width: 12 mm (Ƌ). Wings. Upper side yellowish-cream, densely powdered with dark gray scales; discal spot gray, faintly in contrast to the background; antemedial line gray, faintly visible, blurring with background; postmedial line rather indistinct, occasionally mingling with the basic coloration, darkened on veins, giving an interrupted impression; marginal line faintly implied or absent; underside pale yellowish-cream; discal spot rather indistinct, light-gray; postmedial line slightly visible, shadow-like; marginal line missing; fringes yellowish, darker on vein ends. Male genitalia (Pl. 3, Fig. 4 c). Total length: 2.02–2.34 mm ; valvae span: 1.41–1.43 mm ; valvulae span: 1.33– 1.38 mm ; valvae width: 0.66–0.77 mm . Costa covered with about 15–20 short and thick costal thorns; uncus strongly sclerotized, slenderly triangular-shaped with blunt peak; gnathos strongly sclerotized, slender, laterally not compressed, intensely pointed; juxta small, unremarkable, not bifurcate or broadened; aedeagus length: 0.70–0.77 mm ; appendix aedeagi: 0.64–0.68 mm . Diagnosis. Gnophopsodos hilmari closely resembles G. badakhshanus in wing-form and type of coloration, but G. badakhshanus is conspicuously whitish whilst G. hilmari bears a more yellowish-brown or cream basic color. But relying solely on external characters should not lead to a firm determination of the species. Using genitalia characteristics attention should be given to the number of costal thorns and the form of the anterior appendices of the juxta: the costa of G. badakhshanus bears about 6–8 short and thick costal thorns, which is about half the number of thorns on the costa of G. hilmari . The anterior appendices of the juxta of G. badakhshanus terminate typically cusp-like, while in G. hilmari appendices are moderately pointed. The aedeagi of both species are extremely similar in form, but the aedeagus of G. hilmari is clearly longer ( 0.70–0.77 mm ) than that of G. badakhshanus ( 0.59–0.65 mm ). Distribution ( Fig. 4 ). Of the three known specimens of G. hilmari two originate from the Bolshoy Chimgan Mountain ( 2800 m ) in Uzbekistan and the third one was collected in the Ala–Artscha National Park ( 3500 m – 4000 m ) in Kyrgyzstan . Biology. All examined specimens were collected at the beginning of July. No further records are available. Remarks. Based on available molecular data the nearest species of G. h i l m a r i is G. puengeleri with a COI distance of 6.9% (see also Tab. 1 and Fig. 6 ), whereas the morphology of male genitalia indicates a relationship of G. hilmari and G. badakhshanus . Etymology. The new species is dedicated to the Chemnitz performer, mime artist, philosopher, and father of the co-author, Hilmar Messenbrink.