Promalactis quadrilobata Wang, 2018

Jia, Yanyan, Wang, Shuxia & Bae, Yang-Seop, 2018, The genus Promalactis Meyrick (Lepidoptera: Oecophoridae) in Cambodia, with description of eight new species, Zootaxa 4422 (1), pp. 104-114 : 112-113

publication ID 10.11646/zootaxa.4422.1.6

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Promalactis quadrilobata Wang

sp. nov.

Promalactis quadrilobata Wang , sp. nov.

( Figs 7 View FIGURES 1–8 , 18 View FIGURES 15–19 )

Type material. CAMBODIA: Holotype ♀, Seima (12°14'54'' N, 107°03'15''E), Keo Seima Wildlife Sanctuary , Mondulkiri Province, 16.VIII.2013, coll. Bae Y.S. et al., slide No. INU-NK15177 GoogleMaps . Paratype: 1♀, Kohkong (11°41'44.9''N, 103°06'51.8''E), Cardamom Mountains , Kohkong Province, 22.II.2012, coll. Bae Y.S. et al., slide No. W17009 ( NKU) GoogleMaps .

Diagnosis. This species is similar in the forewing pattern to P. uncignatha Du, Li & Wang, 2011 , P. heppneri Kim & Park, 2010 and P. unistriatella Lvovsky, 2000 . It can be distinguished from P. uncignatha by the forewing with uniform ground color, which is orange yellow in basal 1/3 and dark ocherous brown in distal 2/ 3 in the latter species. It can be distinguished from P. heppneri and P. unistriatella in the female genitalia by the narrow lamella postvaginalis bearing paired longer dorsal lobes and paired shorter ventral lobes, and with a short cylindrical process at middle on the posterior margin between the two pairs of lobes; while in the latter two species, the lamella postvaginalis lacks such processes.

Description. Adult ( Fig. 7 View FIGURES 1–8 ) wingspan 7.5−8.0 mm. Head with vertex white, frons deep gray, occiput brownish rusty red. Labial palpus with second segment brown; third segment white basally, black distally. Antenna with scape white; flagellum white on several basal flagellomeres, ringed with blackish brown on distal flagellomeres. Thorax and tegula brownish rusty red. Forewing pale ocherous yellow (specimen from Seima) or grayish yellow (specimen from Kohkong); antemedian fascia white, from before basal 1/4 of costal margin straightly oblique outward to before basal 2/3 of dorsum; apical patch very large, almost occupying distal 1/3 of entire forewing, silvery with shining bluish luster, scattered with black scales, edged with dense black scales along its inner margin and terminal margin; cilia orange yellow, basally tinged with blackish brown around tornus. Hindwing and cilia gray. Fore- and midlegs with ventral side yellowish white, dorsal side black, tibiae with a tuft of white scales, tarsi white at apices of first and second tarsomeres; hindleg whitish yellow, with brownish gray hairs on tibia, tarsus whitish yellow.

Female genitalia ( Fig. 18 View FIGURES 15–19 ): Apophyses posteriores approximately three times as long as apophyses anteriores. Sternum straight and with fine setae on posterior margin. Lamella postvaginalis a narrow transverse plate, with two pairs of posterior lobes: first pair from dorsal side, extending inward, narrowed and setose distally, pointed apically; second pair from ventral side, extending outward, narrowed to pointed apex; between two pairs of processes set a short cylindrical process at middle on posterior margin. Antrum wide at base, narrowed toward ductus bursae. Ductus bursae membranous, shorter than corpus bursae, with large sclerite entering corpus bursae. Corpus bursae elliptical, with granules; signum being a quadrate plate, with dense denticles, placed posteriorly.

Male unknown.

Distribution. Cambodia (Kohkong, Mondulkiri).

Etymology. This specific epithet is derived from the Latin quadri- (four) and lobatus (lobe), referring to the four posterior lobes of the lamella postvaginalis.


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