Autosticha cordiformis, Wang & Wang, 2017

Wang, Yuqi & Wang, Shuxia, 2017, Genus Autosticha Meyrick (Lepidoptera: Autostichidae) from Taiwan, China, Zoological Systematics 42 (4), pp. 508-513 : 509

Autosticha cordiformis sp. nov. ( Figs 1–2 )

Material examined. Holotype ♂, Nantou Hueisun Exp. Forest, Taiwan, China (elev. 650 m), 24−29 October 1998, coll. W. Mey & W. Speidel, genitalia slide No. MNHU-NK143 ( MNHU).

Diagnosis. This new species can be distinguished from other described species by having a heart-shaped sacculus, which is often papillate, triangular, thorn-like, beak-shaped or underdeveloped.

Description. Adult ( Fig. 1 ). Wingspan 9.0 mm. Head yellowish brown. Labial palpus yellowish brown except blackish brown on outer surface and on distal part of second segment. Antenna yellowish brown, narrowly ringed with brown. Thorax and tegula grayish white except basal part of tegula with blackish brown scales. Forewing yellowish brown, costal margin with basal 1/4 blackish brown; terminal dots balckish brown, ranging from distal 1/4 of costal margin along termen to tornus; discal, discocellular and plical spots blackish brown, discocellular spot largest; cilia pale blackish brown. Hindwing and cilia pale gray. Fore- and midlegs yellowish white on dorsal surface, yellowish brown on ventral surface, tibiae and tarsi mixed with white; hindleg pale yellowish white.

Male genitalia ( Fig. 2 ). Uncus spatulate, narrow at base, broadened to before rounded apex. Gnathos triangular, with long setae; lateral arms broadly banded, approximately twice length of gnathos. Valva foliate; costa narrow, reaching before apex; ventral margin arched and protruded medially. Sacculus heart-shaped, about 1/4 length of valva. Saccus broad triangular, wide at base, narrowed to apex, about half length of uncus. Juxta triangular, slightly protruded at middle on anterior margin. Aedeagus approximately 3/5 length of valva, slightly narrowed distally, narrowly rounded apically; cornuti consisting of a bunch of teeth, ranging from middle to before apex.

Female. Unknown.

Distribution. China (Taiwan).

Etymology. The specific name is derived from the Latin cordiformis (cordiform), referring to the shape of the sacculus.

Figures

Figures 1–5. Autosticha spp. 1–2. A. cordiformis sp. nov. 1. Adult. 2. Male genitalia, slide No. MNHU-NK143. 3–5. A. tachytoma comb. nov. 3. Adult. 4. Male genitalia, slide No. MNHU-NK140. 5. Female genitalia, slide No. MNHU-NK141. Scale bars: 1, 3=2.0mm; 2, 4–5=0.2mm.