Antiochtha hemitatos Park

Park, Kyu-Tek & Bae, Yang-Seop, 2017, Descriptions of two new species of Torodorinae (Lepidoptera, Lecithoceridae), with three new records of Torodora Meyrick from Laos, Zootaxa 4268 (2), pp. 285-290 : 287-288

Antiochtha hemitatos Park , sp. nov.

( Figs. 2, 5, 6 a–b)

Type. Holotype: male, PKK Nat. Park, Bolikampsai Prov. , 4 viii 2016, 451 m, (18°27'N, 103°34'E), coll. Bae YS et al., gen. slide no. CIS-6832 . Paratype: 1 6, same data as the holotype, gen. slide no.CIS-6833.

Diagnosis. This new species is similar to A. semialis Park, 2002 , which was described from Thailand, by having a similar color pattern in the forewing with a dark brown basal half, but it can be distinguished by the outer margin of the dark brown zone distinctly convex from the upper margin of cell to above the inner margin, whereas in A. semialis , the margin is zigzagged; and in the hindwing M3 and CuA1 are stalked, whereas they are coincident in A. semialis . The male genitalia are characterized by a large spatulate uncus and the larger lobes of the juxta caudally.

Description. Male ( Figs. 2, 4 ). Wingspan 12.0 mm. Head dark brown. Basal segment of antenna dark brown dorsally; flagellum more or less thickened in basal half, black scales sparsely scattered dorsally, then thinner beyond, orange white. Tegula and thorax dark brown. Second segment of labial palpus slender, dark brown on outer surface; 3rd segment slender, strongly upturned, with black band at base. Forewing elongate, with dark brown basal zone, occupied in basal 2/5, outer margin convex from upper margin of cell to above inner margin, followed by narrow orange white antemedian line; distal part beyond antemedian line densely coved with dark brown scales; blackish reniform discal stigma presented near end of cell; costa strongly oblique beyond R2 termination; apex produced; termen concave medially; fringe dark brown, with orange white basal line; venation ( Fig. 4 ): distance between R1 and R2 at base longer than twice of distance R2-R3; R3 stalked with R4+5; R4 and R5 stalked; R5 reach beyond apex; M1 stalked with R3+4+5; M2 absent; R3 nearly straight; CuA1 and CuA2 stalked before basal 1/3; cell weakly closed. Hindwing pale gray, M2 present, M3 stalked with CuA1 beyond middle.

Male genitalia ( Figs. 5, 6, 6 a–c). Uncus large, spatulate, with round caudal margin. Gnathos large, as long as uncus, with broad median process. Valva extremely broad at base; cucullus narrowed toward apex, densely setose, as long as basal part of valva; apex rounded; sacculus broadly developed, extended to lower corner of cucullus. Juxta crock-shaped, with large latero-caudal lobes. Aedeagus ( Fig. 6 b) stout, longer than tegumen plus uncus. Abdominal tergites with spinous zones ( Fig. 6 c); eighth sternite not distinctly modified.

Distribution. Laos (Bolikampsai).

Etymology. The species name is derived from the Greek hemi (= half), with a Greek superlative ending, - tatos.

Remarks. The venation of the hindwing differs from that of the type species in having M2 present, however other characters are well in accordance with the genus.

Figures

FIGURES 1 – 6. Adults and male genitalia: 1, Caveana plenalinea Park, sp. nov.; 2, Antiochtha hemitatos Park, sp. nov.; 3, male genitalia of C. plenalinea Park; 3 a, ditto, aedeagus; 3 b, ditto, abdomen; 3 c, ditto, eighth abdominal segment; 4, venation of A. hemiodes Park; 5, male genitalia of A. hemitatos Park; 6, ditto, different view; 6 a, ditto, tegumen + uncus; 6 b, ditto, aedeagus; 6 c, ditto, abdomen. Scale bar: 1 mm.