Thubana brunalis Park

Park, Kyu-Tek, Cho, Soowon & Bae, Yang-Seop, 2016, Review of Lecithoceridae (Lepidoptera: Gelechioidea) in the Oceanian Region, with description of a new species and a checklist of the family, Zootaxa 4147 (2), pp. 143-161 : 147-148

Thubana brunalis Park , sp. nov.

( Figs. 2, 2 a, 3, 3a, 4)

Type. Holotype: Male, Indonesia, Papua, Kekamatan, Oksibil , Mabilabol , 1,340 m, 4°54'S, 140° 37'E, 21–25 ii 2005, at light, disturbed montane forest, UNCEN-ZMA Expedition , Papua, new guinea, 2005, gen. slide no. CIS- 6051. The type is deposited in the RMNH .

Diagnosis. This new species has a little difference from the ordinary members of the genus, by having different venation with M2 absent in both wings and the third segment of labial palpus not as slender as those of congeners.

Description. Wingspan, 15 mm. Adult ( Fig. 2 ): Head with yellowish white, shiny appressed scales on face; with yellowish, shiny scales centrally and yellowish brown scales laterally; lateral erect scales yellowish white. Antenna orange white without annulations on flagellomeres. Second segment of labial palpus (Fig. 5) thickened, long, more than twice than diameter of compound eye, dark fuscous on basal 1/4 dorsally, pale orange apically; 3rd segment pale orange, narrowly thickened, not slender as well as those of congeners. Tegula yellowish brown anteriorly, yellowish white and yellowish brown scales mixed posteriorly Mesonotum pale yellowish and yellowish brown scales intermixed dorsally. Forewing ground color yellowish white, densely intermixed with yellowish brown scales throughout; costa slightly arched, with large, triangular pale yellow costal patch medially and smaller elongate subapical patch; a faint yellowish brown, broad antemedian fascia along inner margin of costal patch, indistinct; apex obtuse; termen oblique; fringe concolorous with ground color of wing. venation ( Fig. 4 ) R1 arising beyond middle; R2 stalked with R3+R4 near base; R3 and R4 stalked beyond middle; R4 to costa; R5 absent; M1 free; M2 absent; M3 straightly extended from lower margin of cell; cell open; CuA1 and CuA2 short stalked; apex obtuse; termen oblique; Hindwing yellowish brown, with well-developed whitish zigzagged subterminal line; apex more or less acute; venation with Rs subparallel to costa and fusing at 3/4; Rs and M1 stalked; M2 absent; M3 and CuA1 connate; cell open. Hindtibia slender, yellowish white on outer surface, with some yellowish brown scales medially.

Male genitalia ( Fig. 3, 3 a): Uncus curved downwards, blunt apically. Gnathos broad, flattened to beyond middle, and bent downwards apically, narrowing to a pointed apex. Tegumen sclerotized laterally. Valva broad at base, with costa shallowly emarginate near 2/3; ventral margin straight; cucullus dilated dorsoventrally beyong costa and ventral margin, with dense setae along the outer margin, outer margin broadly rounded; sacculus weakly developed, broad at base, gradually narrower to middle of ventral margin. Juxta with large spatulate latero-caudal processes, extending as long as juxta; caudal margin forming W-shaped process, with a short, triangular median process. Phallus stout, as long as tegumen+uncus, vesica with numerous spicules, Abdominal tergites with spinous zones; with a pair of long hairpencils on abdominal sternite VII.

Distribution. Papua, Indonesia.

Etymology. The species name is derived from the Latin, bruneus (= brown), referring the brownish color pattern on the forewing.

Figures

FIGURES 2 – 4. Thubana brunalis Park, sp. nov. 2, Adult, holotype; 2 a, Head, showing labial palpus, paratype; 3 – 3 a, Male genitalia, holotype, gen. slide no. CIS- 6051 showing genital capsule and aedeagus; 4, Venation, paratype.