Endotricha unicolor Li

Sun, Yongling & Li, Houhun, 2012, Five new species and three new females of the genus Endotricha Zeller from China (Lepidoptera, Pyralidae, Pyralinae), ZooKeys 214, pp. 29-42 : 33-34

Endotricha unicolor Li sp. n. Figs 21015

Type material.

Holotype ♂ - China, Xizang (Tibet) Autonomous Region: Milin County (19°10'N, 94°10'E), 2980 m, 30.VII.2010, coll. Houhun Li, genitalia slide no. SYL11147. Paratypes: 2 ♀, same data as for holotype except dated 30−31.VII.2010; 1 ♀, Lulang Town, Linzhi County, 3065 m, 4.VIII.2010, coll. Houhun Li.

Diagnosis.

This species is similar in appearance to Endotricha consobrinalis Zeller, 1852 from Africa, with some external variation. It can be distinguished in the male genitalia by the apically bluntly rounded uncus arm, the distally dilated gnathos, and by the sacculus produced to a distal-curved process; and in the female genitalia by the oval corpus bursae with signum placed in posterior 1/3. In Endotricha consobrinalis , the forewing is ocherous brown, the uncus arm is narrowly rounded, the gnathos is slightly narrowed distally and the sacculus is produced into a distal-straight process; and the corpus bursae is elongate rectangular, and the signum is situated in its posterior 1/4.

Description.

Adult (Fig. 2): Wing expanse 20.0 mm. Head yellowish brown. Antenna yellowish brown, with blackish brown dorsal annuli. Labial palpus blackish brown on outer surface, yellowish brown on inner surface, third segment greyish white at apex. Thorax and tegula greyish brown. Forewing brown, irrorate with purple reddish brown scales throughout in female, from base to antemedian line in male; costal margin black, interrupted with white dots, distinct on distal 2/3; antemedian line white, edged with black on inner margin, extending from costal 1/3 obliquely outward to near middle of cell, then inward to fold, and finally arched outward to dorsum; discal spot black, kidney-shaped; postmedian line white, distinctly edged with black on inner margin, extending from about costal 1/8 curved inward to dorsal 3/4; termen with interrupted short black streaks; fringe deep grey. Hindwing yellowish grey, tinged with black distally; ante- and postmedian lines pale silvery grey on dorsal surface, sinuous along both edges, black on ventral surface; termen with black dots and short streaks; fringe greyish brown basally, greyish yellow distally, pale yellow along dorsal margin. Legs yellowish white on dorsal surface, blackish brown on ventral surface.

Male genitalia (Fig. 10). Uncus rectangular, gently arched caudally; uncus arm broad, bluntly rounded apically; uncus processes triangular, situated at about 3/5. Gnathos somewhat racket-shaped, rounded at apex. Valva elongately narrow, arched ventrally, rounded at apex; transtilla a curved narrow band. Sacculus elongate triangular, wide basally, tapering to a long spine-shaped process curved distally, apex reaching middle of ventral margin, curved backward. Vinculum broad; saccus short and broad, rounded anteriorly. Juxta broad basally, narrower and nearly parallel distally; lateral lobe short, about 1/3 of its length. Phallus slender and long; ductus ejaculation from basal 1/4.

Female genitalia (Fig. 15). Ovipositor nearly triangular, narrowly rounded caudally. Apophysis posterioris long and slender, about 2.5 times length of apophysis anterioris. Ostium bursae broad funnel-shaped, weakly sclerotized; antrum heavily sclerotized, lateral sides nearly parallel, slightly longer than half length of apophysis anterioris; ductus bursae membranous, shorter than antrum. Corpus burase oval; signum small, weak, placed at posterior 1/3.

Distribution

(Map 1). China (Tibet).

Etymology.

This specific name is from the Latin prefix uni-, meaning unitary, and the Latin postfix -color, meaning color, in reference to the hindwing without distinct patterns.