Anthonympha trapezia Li

Cong, Peixin, Fan, Ximei & Li, Houhun, 2016, Review of the genus Anthonympha Moriuti, 1971 (Lepidoptera: Plutellidae) from China, with descriptions of four new species, Zootaxa 4105 (3), pp. 285-295: 293

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Anthonympha trapezia Li

sp. nov.

Anthonympha trapezia Li  , sp. nov.

Figs 2View FIGURE 2 c, 3 c, 4 c

Type material. CHINA: Holotype ♂, Baotianman [33.12 °N, 111.53 °E], Neixiang, Henan Province, 1200 m, 30.v. 2006, coll. Xu Zhang and Jinmei Lv, genitalia slide no. JQ08382.

Diagnosis. This species is close to A. ligulacea  sp. nov., A. reniforma  sp. nov. and A. rossica Ponomarenko, 2015  in the male genitalia by having a pair of elongate tapering socii ( Fig. 4View FIGURE 4 c). Anthonympha trapezia  sp. nov. can be distinguished from A. ligulacea  sp. nov. by the transversely banded gnathos arched backward, which is produced to a sclerotized tongue-shaped process medially in A. ligulacea  sp. nov.; from A. reniforma  sp. nov. by the large saccus with a truncate apex, the curved aedeagus with cornuti composed of numerous spinules, while in A. reniforma  sp. nov., the small saccus is rounded at apex, the straight aedeagus has a slender thorn-shaped cornutus; and from A. rossica Ponomarenko  by the semi-elliptical valva, which is almost square in the latter species.

Description. Adult ( Fig. 3View FIGURE 3 c): Wingspan 15.0 mm. Head white. Antenna with scape white, pecten pale brown; flagellum white except basal four flagellomeres brown dorsally. Labial palpus white, first and second palpomeres mixed with yellowish brown scales on the outer surface. Thorax white, with a brown transverse band on posterior 1 / 5. Tegula white, mixed with brown scales at middle of base. Forewing with M 3 and CuA 1 separated; white; costal margin with a semicircular blackish brown spot near base, distal half golden yellow from anterior third narrowed to above apex, forming a triangular blotch, with four white oblique and parallel outward strigulae alternated four golden yellow strigulae tinged with black scales, distal half of posterior two-thirds diffused with dark yellowish brown scales; dorsal fascia gloden yellow, studded with blackish brown scales distally and along both margins, slightly narrowed and extending outward to first gloden strigula from costa; cilia white, with a brown line medially. Hindwing with M 3 and CuA 1 separate; brown; cilia greyish brown except greyish white along basal 1 / 3 on dorsum. Foreleg greyish brown, tarsi white at base of each tarsomere ventrally; mid- and hindlegs white, tibia of midleg covered with blackish brown scales distally, tarsi of mid- and hindlegs blackish brown at apex of each tarsomere on outer side.

Male genitalia ( Fig. 4View FIGURE 4 c): Socius elongate, exceeding end of tuba analis, slightly widened at base, narrowed distally; apex blunt, slightly hooked ventrad. Tuba analis membranous, ventro-median sclerotized band narrow, from above base to basal 2 / 3. Gnathos widely banded, roundly arched posteriorly. Valva semi-elliptical, with costa nearly straight, ventral margin roundly arched, apex rounded. Saccus short and wide, trapeziform, truncate at apex. Aedeagus strong, curved, about twice length of valva; cornuti composed of two clusters of numerous spinules, larger cluster ovate, extending from middle to 3 / 4 of aedeagus, smaller cluster narrow rectangular, extending from above middle of larger cluster to apex.

Female unknown.

Distribution. China (Henan).

Etymology. The specific name is derived from the Latin adjective trapezius, meaning trapeziform, referring to the trapeziform saccus in the male genitalia.