Promalactis uncinispinea, Du, Zhaohui & Wang, Shuxia, 2013

Du, Zhaohui & Wang, Shuxia, 2013, Genus Promalactis Meyrick (Lepidoptera, Oecophoridae) from China: Descriptions of twelve new species, ZooKeys 285, pp. 23-52 : 42-43

Promalactis uncinispinea sp. n. Figs 1228

Type material.

China: Sichuan Province: Holotype ♂, Mt. Qingcheng (30°58'N, 103°31'E), 16.vii.1980, genitalia slide No. DZH12185 (IOZ).

Diagnosis.

This species is extremely similar to Promalactis serpenticapitata sp. n. It can be separated by the gnathos with a triangular subapical process ventrally, the distal process of the sacculus with a small dentate dorso-medial process, the juxta with a bundle of setae and short spines in distal 1/3, and the cornutus about 2/3 length of aedeagus in the male genitalia. In Promalactis serpenticapitata sp. n., the gnathos has a snake head-shaped subapical process ventrally, the distal process of the sacculus lacks the dorso-medial process, the juxta has a bundle of setae and short spines in distal 7/10, and the cornutus is about 1/3 the length of the aedeagus. This species is also superficially similar to Promalactis dierli Lvovsky, 2000, but can be easily separated by the male genitalia with a symmetrical valva and the aedeagus with one cornutus. In Promalactis dierli , the valva is asymmetrical and the aedeagus has no cornutus in the male genitalia.

Description.

Adult (Fig. 12). Wingspan 11.0 mm. Head with vertex and frons silvery white mixed with brown, occiput dark brown. Labial palpus with basal and second segments dark brown; third segment black except white at base and apex, slightly shorter than second. Antenna with scape white except black on anterior and posterior margins; flagellum white and black on dorsal surface, dark brown on ventral surface. Thorax and tegula dark ochreous brown. Forewing with basal 3/5 ochreous brown, distal 2/5 ochreous yellow; markings silvery white or white, edged with dense black scales; costal margin with a semicircular silvery white spot at middle; cell with a small silvery white dot under costal spot; three silvery white streaks arising from dorsal margin: basal streak to base of fold, second streak from dorsal 1/3 straight to basal 1/3 of upper margin of cell, third streak from dorsal 2/5 obliquely to distal 1/4 of cell on lower margin; fold with a white dot at end; apex with an elliptic white spot, edged with dense black scales; cilia yellow, grey along distal part of dorsal margin. Hindwing and cilia dark grey.

Male genitalia (Fig. 28). Uncus subtriangular, broad at base, narrowed to pointed apex, with a subapical tooth ventrally. Gnathos almost same length as uncus, slender, distal 1/4 scobinate and curved ventrad, apex narrowly rounded, ventrally with a small, triangular subapical process; lateral arm band shaped, about 1/4 length of gnathos. Tegumen narrow posteriorly, convex laterally at posterior 1/3, branched from posterior 2/3, rounded apically. Valva sclerotized; basal 2/3 almost parallel dorso-ventrally, distally produced to a setose triangular process; costa with basal 3/5 straight, distal 2/5 concave. Sacculus broad at base, slightly narrowed distally, dorsal margin concave between basal 2/5−2/3, distal 1/3 produced to a free, setose distal process, which bears a small, heavily sclerotized, dentate process dorso-medially, apex pointed and directing dorsad, far exceeding tip of costa. Vinculum widened anteriorly, with a slender transverse band joining left and right sides, forming a fan-shaped area between this band and posterior margin of saccus. Saccus short and broad, slightly shorter than uncus, subtriangular, narrowly rounded at apex. Juxta long, nearly rod-like, slightly curved, broad basally, with a short digitate basal process, distal 1/3 with a bundle of setae and short spines on dorsal surface, apically with dense short spines, reaching near posterior margin of tegumen. Aedeagus straight and short, about 3/5 length of valva; with two pieces of dense microtrichia and a heavily sclerotized hooked spine distally; cornutus slightly curved, basal half weakly sclerotized and rod-like, distal half heavily sclerotized and spine-like, situated at middle, about 2/3 length of aedeagus, with several short spines medially.

Female. Unknown.

Distribution.

China (Sichuan).

Etymology.

The specific name is derived from the Latin prefix uncin- (= hooked), and Latin spineus (= spine-like), referring to the hooked distal spine in the aedeagus.