Pompographa concaviella Park, sp. nov.

(Figs. 1 A–D; 2A–C)

urn:lsid:zoobank.org:act: BCE8D86C-2368-4F6C-BE98-4CDBDF0D15F3

Type specimen. Holotype: male, Thailand, Nakhon Nayok, Khao Yai, ca. 800 m, 11–19 xi1985, Chiang Mai, Doi Chang Khian, ca. 1,250 m, 25 x 1985, leg. Moriuti, Saito, & Arita, gen. slide no. CIS-8169 . Paratype: 13, same data as the holotype. Types are deposited in OPUJ .

Diagnosis. This new species is hardly distinguished in its external appearance from P. philosopha Gozmány, 1971, which was described from N India and P. barathrona (Park, 2020) described from Laos. However, it can be distinguished by the yellowish-white costal patch just beyond middle of the costa. The male genitalia are also similar to those of P. barathrona, but they differ from the latter by the valva having a heavily sclerotized, spine-like process on the ventral margin and the cucullus with a short spine at lower corner, whereas in P. barbathrona the process of valva is short, lacking the horn-shaped spine and the cucullus lacks of a short spine.

Description. Male (Figs. 1 A-D). Wingspan 11.5–12.0 mm. Head: Covered with shiny, yellowish-white scales dorsally. Scape of antenna elongated, creamy white on dorsal surface, brownish anteriorly and posteriorly; flagellum creamy-white, with distinct dark-brown annulations throughout (Fig. 1C). Second segment of labial palpus thickened, pale brownish gray on outer surface and paler on inner surface, with white scales at apex; 3rd segment gently upturned, slender, as long as 2nd segment, blackish ventrally creamy white laterally. Thorax: Tegula and thorax pale orange to orange gray. Hind tibia with rough scales beneath. Forewing ground color brownish orange, irregularly scattered with dark-brown scales; a large, irregular-shaped, blackish patch well-developed before middle, disconnected to a trapezoidal patch arising from 2/3 of costa which is followed by a yellowish costal patch; a large, kidney-shaped spot at the end of discal cell, boarded by white scales along outer margin; postmedian line white, convex outwardly before middle; apex sharply produced; termen deeply concave beyond apex, with black scales along margin; fringe brownish orange, with narrow yellowish white basal line, fuscous in its distal half; venation with R 1 arising beyond middle of cell; R 2, R 3, R 4, and R 5 on a common stalk; R 2 arising from basal 1/3; R 3 arising from middle between R 2 and R 4+5; R 5 reaching termen; M 2 present; M 3 and CuA 1 coincident; cell more or less triangular, closed. Hind wing pale brownish gray; apex sharply produced, as much as that of gelechiids; inner margin with a broad expansion before 2A; termen concave; venation with M 2 present; M 3 and CuA 1 nearly connate at base.

Abdomen (Fig. 2C): Spinous zones broadly developed; sternite VIII broad, concave medially on caudal margin.

Male genitalia (Figs. 2A, B): Uncus short, broad basally, narrowed beyond middle, nearly parallel-sided; apex rounded. Gnathos small. Tegumen weakly sclerotized, roundly concave on anterior margin. Valva broad at base, basal part nearly quadrate, constricted medially; costa straight in basal 1/4, sclerotized, then abruptly oblique, nearly with right angle; ventral margin with a large, spine-like process curved outwardly, followed by a deep emargination; cucullus thumb-like, rounded apically with a short spine at lower corner, dense setose; sacculus narrow, weakly developed. Juxta rectangular, concave on caudal margin, with a small, triangular median plate; lateral margin nearly straight. Vinculum narrow, banded.Aedeagus stout, as long as valva, with arched dorsal margin; bifurcated apically; dorsal margin produced into tounge-like shape and ventral process narrowly produced; cornuti consisting of a long, linear stripe extended from near base to near apex, with a heavily sclerotized, sharply produced apical part, and a broadly elongated plate with numerous strong conical spines dorsally, about 2/3 length of aedeagus.

Female unknown.

Distribution. Thailand (Nakhon Nayok).

Etymology. The species name is derived from the Latin, concavus (= arched inward), referring to the termen of the forewing deeply concave beyond apex.