Torodora triquetrella Park, 2021

Park, Kyu-Tek & Bae, Yang-Seop, 2021, Five new species of the genus Torodora Meyrick (Lepidoptera, Lecithoceridae Torodorinae) from Cambodia, with a tentative check-list of the genus, Zootaxa 4949 (1), pp. 102-114 : 109-110

Torodora triquetrella Park , sp. nov.

( Figs. 4A–F )

Type material. Holotype: ♂, Cambodia, Mondulkiri, 12°57′8˝N 107°10′8˝E, 7 x 2010, leg. YS Bae, XV Le, & YD Ju; gen. side no. CIS-8080.

Diagnosis. The new species is similar to the preceding new species in the wing pattern, but the forewing is not good condition with scales removed and markings also cannot be seen clearly. The species can be distinguished from the latter by the forewing with very sharply produced apex, and the male genitalia with valva more elongated, cucullus slightly narrowed apically, juxta with triangularly produced latero-apical apices, and aedeagus more narrowly extended apically.

Description. Adult ( Figs 4A, B ). Wingspan 11.5 mm.

Head: Descaled on vertex, with yellowish-white erect scales laterally. Antenna longer than forewing, about 1.2 times longer than the length of forewing; scape elongated, slightly dilated distally, mustard brown all around; flagellum with distinct yellowish-white and dark-brown rings alternatively. Second segment of labial palpus slightly thickened; 3 rd segment slender, about 1.3 times longer than 2 nd segment.

Thorax: Tegula and thorax grayish orange dorsally. Hind tibia grayish orange, with white apex, rarely setose; 1 st segment of tarsi slender, longer than half length of tibia, creamy white; 2 nd and 3 rd tarsi with brownish scales. Forewing ground color grayish orange; apex extremely produced; venation with R 1 arising from beyond middle; distance between origins of R 2 and R 3 less than 1/3 length of R 1 and R 2; R 3 stalked with R 4+5 for basal 3/5 length; R 4 and R 5 stalked; R 5 to termen; M 1 remote from R 3+4; M 2 close to M 3 at base; CuA 1 and CuA 2 short-stalked; cell opened. Hind wing with more grayish scales than forewing; apex acute; termen slightly sinuate; fringe concolorous; venation with M 2 close to M 3 +CuA 1 at base, M 3 and CuA 1 stalked for about basal 3/4.

Abdomen ( Fig. 4F ): Spinous zones with spines mostly along posterior margin; sternite VIII with median protrusion on posterior margin and with two spine-like processes on anterior margin.

Male genitalia ( Figs. 4C–E ): Uncus broadened distally, sharply produced at lateral apices. Gnathos slender, gently bent beyond 3/4. Tegumen weakly sclerotized, emarginated in inverted V-shaped on anterior margin. Valva elongated, broadly expanded in basal 1/4 anteriorly; costa gently concave; cucullus more or less elongated, broadest medially, narrowed beyond 3/5, densely setose; sacculus broad at base, narrowly terminated at lower corner of cucullus. Juxta concave in V-shape on caudal margin, triangularly produced latero-apically. Aedeagus stout, globular in basal half, broader than basal part of valva, strongly bent medially, narrowed toward apex, with sclerotized, narrowly produced apex; cornuti consisting of a large sac with numerous conic spines.

Female unknown.

Distribution. Cambodia (Mondulkiri).

Etymology. The species name is derived from the Latin, triquetrus (= triangular), referring to the triangularly produced juxta apically.

Figures

FIGURE 4. Torodora triquetrella Park, sp. nov.: A, adult, holotype; B, close-up antenna; C, male genitalia, gen. slide no. CIS- 8080; D, aedeagus; E, close-up juxta; F, abdominal segments VI–VIII. Scale bar for genitalia and aedeagus: 1.0 mm.