Ethmia adunatimacula, Zhu & Wang, 2022

Zhu, Xiaoju & Wang, Shuxia, 2022, Study of the genus Ethmia Hübner, [1819] (Lepidoptera: Ethmiidae) from China with descriptions of six new species, Zootaxa 5194 (2), pp. 176-192 : 181-182

Ethmia adunatimacula sp. nov.

( Figs 4 , 13 , 22 )

Type material. CHINA, Guizhou: Holotype ♂, Baishao Village, Qinggangtang Town , Suiyang County, 800 m, 13.VIII.2010, leg XC Du, slide No. ZXJ20202 . Paratypes: 1♂ 10♀, 10−13.VIII.2010, other same data as holotype, slide Nos. WJJ10009 ♀, WJJ11023 ♀, WJJ11022 ♂, ZXJ20203 ♀; 3♂, Kuankuoshui , Suiyang County, 15−17. III.2010, leg. LL Yang, slide No. WJJ10068 ; 1♂ 1♀, Xiasi Village, Kuankuoshui , Suiyang County, 840 m, 6−8. VI.2010, leg. LL Yang, slide Nos. WJJ10010 ♂, WJJ10069 ♀.

Diagnosis. The new species is similar to E. transtimacula sp. nov. in both forewing pattern and genitalia. It can be distinguished in the forewing by the spot above the basal 2/5 of the anterior margin of the cell not touching the stripe on the costal margin, and the spot at the basal 2/5 of the fold connected with the spot above the basal 1/4 of the dorsum; and in the male genitalia by the ventroapical spine of the sacculus 1/3 the length of the cucullus. In E. transtimacula , the spot above the basal 2/5 of the anterior margin of the cell is diffused to the stripe on the costal margin, and the spot at the basal 1/3 of the fold is not connected with the spot above the basal 1/4 of the dorsum; and the ventroapical spine of the sacculus is 2/5 the length of the cucullus.

Description. Adult ( Fig. 4 ). Wingspan 25.5‒30.5 mm.

Head: Vertex white, frons blackish brown. Labial palpus blackish brown; basal palpomere mixed with white on ventral surface; second palpomere mixed with white at inner surface basally; third palpomere white at apex. Antenna with scape white, brown on anterior margin, with a brown spot on posterior margin distally, white on ventral surface; flagellum greyish brown, white on several basal flagellomeres dorsally.

Thorax: Collar, mesonotum and tegula white; collar black at base, mesonotum with paired black spots basally and distally, tegula with a black spot at base near outer margin. Forewing pale grey, overlaid with 14 black markings: costal margin with three stripes in basal half; one sub-ovate spot above basal 2/5 of anterior margin of cell; cell with a small black spot at basal 3/5 connected to tadpole-shaped stripe at distal 1/3; fold with black spot at base, at basal 2/5 and 3/5, spot at basal 2/5 connected with spot above basal 1/4 of dorsum; a black spot near base of wing above fold; three distal spots arranged in a triangle; ten marginal dots extending from distal part of costal margin along termen to tornus; fringe concolourous with wing, greyish brown in distal part of costal margin. Hindwing greyish brown, fringe greyish white mixed with greyish brown. Legs predominantly white; fore- and midlegs with coxae black on ventral surface, femora black dorsally, except femur of midleg white near apex, tibiae black dorsally, with white dot at base, middle and apex, tarsi black, white at apex of basal tarsomere; femur of hindleg with black dots dorsally, tibia with long brown hairs at outside, tarsus brown, white at base and apex of basal tarsomere as well at apex of second tarsomere dorsally.

Abdomen: Male genitalia ( Fig. 13 ) with uncus shield-shaped, distal 2/5 bilobed; lobes thumblike, slightly narrowed to rounded apex. Tegumen height slightly longer than uncus. Gnathos nearly as long as uncus; caudal part fan-shaped, with dense patch of long spines on posterior margin; oral part W-shaped, twice as wide as caudal part, with fine spines, deeply concave inward at middle on anterior margin. Labis digitate, 2/3 length of uncus. Valva with costa stout, shorter than half length of valva; sacculus narrow at base, widened medially, narrowed distally, ventral margin obtuse on basal half, concave inward from beyond middle, with a large ventroapical spine 1/3 length of cucullus; cucullus half length of valva, elongate triangular, narrowly rounded at apex. Juxta a wide band; posterolateral lobes narrowed, narrowly rounded at apex. Phallus and vesica weakly sclerotized, cornutus absent. Female genitalia ( Fig. 22 ) with papillae anales as long as apophyses posteriores, with dense setae; apophyses anteriores wide at base, narrowed distally, incurved apically, or obtuse apically in some individuals. Antrum sclerotized ventrally. Ductus bursae coiled. Corpus bursae elongate pear-shaped; signum absent.

Distribution. China (Guizhou).

Etymology. The specific epithet is derived from the Latin adunat- and macula, referring to the spot at basal 2/5 of the fold connected with the spot above basal 1/4 of the dorsum.

Figures

FIGURES 1–4. Adults of Ethmia spp. 1, E. anatiformis, ♂; 2, E. anomala sp. nov., holotype, ♂; 3, E. corrugata sp. nov., holotype, ♂; 4, E. adunatimacula sp. nov., holotype, ♂. Scales = 5.0 mm.

FIGURES 10–15. Male genitalia of Ethmia spp. 10, E. anatiformis, slide No. ZXJ20107; 11, E. anomala sp. nov., holotype, slide No. ZXJ20076; 12, E. corrugata sp. nov., holotype, slide No. ZXJ20108; 13, E. adunatimacula sp. nov., holotype, slide No. ZXJ20202; 14, E. crocosoma, slide No. ZXJ20129; 15, E. rectiuga sp. nov., holotype, slide No. ZXJ19650. Scales = 0.5 mm.

FIGURES 20–23. Female genitalia of Ethmia spp. 20, E. corrugata sp. nov., paratype, slide No.ZXJ20122; 21, E. antennipilosa, slide No. WJJ11021; 22, E. adunatimacula sp. nov., paratype, slide No. ZXJ20203; 23, E. crocosoma, slide No. ZXJ21027. Scales = 0.5 mm.