Promalactis flavidius Kim, 2018

Kim, Sora, Bae, Yang-Seop & Lee, Seunghwan, 2018, Genus Promalactis Meyrick (Lepidoptera: Oecophoridae) from Cambodia, Part II: five new species, checklist and taxonomic key for the species in Cambodia, Journal of Natural History 52 (9 - 10), pp. 607-620 : 613-614

Promalactis flavidius Kim sp. nov.

( Figures 1 (c), 1(d), 2(d–f), 3(a–d))

Diagnosis

This species is similar to P. heppneri Kim & Park, 2010 , by sharing a white antemedial band on the forewing, but it can be easily distinguished from the latter species by having yellow scales apical to the antemedial band and the absence of broad greyish black patch on the forewing, and by the elongate lateral margin of tegumen of male genitalia and the triangular lamella postvaginalis of female genitalia.

Description

Adult ( Figure 1 (c), 1(d)). Head: Frons dark brown, vertex white tinged with pale yellow, occiput dark brown. Antenna: Scape white entirely, as long as diameter of eye; flagellum white from base to 1/2, dark brown and white alternately from 1/2 to apex dorsally. Labial palpus: 2nd palpomere dark brown; 3rd palpomere white, except dark brown at apex; 3rd palpomere 2/3 length of 2nd palpomere. Thorax: Thorax and tegula blackish dark brown. Wingspan 7.5–8.0 mm. Forewing ground colour blackish dark brown before band, dark brown after band, tinged with yellowish brown medially and sub-apically; one medial band white, before yellowish scales edged with fuscous scales, traversed from 2/5 of costal margin to 1/2 of posterior margin; fringes dark brown except yellow apically. Hind wing ground colour and fringes greyish dark brown.

Male genitalia ( Figure 2 (d–f)). Uncus hook-shaped, slightly narrowed toward apex, acutely bent medially and apically. Gnathos absent. Tegumen elongate, bearing a pair of broad widened lobes, shorter than uncus. Valva symmetrical; costal margin concave at 1/ 2; cucullus broad, truncated ventrally, setose entirely, bearing one tiny spine at apex, longer than sacculus; sacculus elongated, thumb-shaped, setose entirely, shorter than cucullus; saccus large, triangular, longer than uncus. Phallus broad at base, gradually narrowed to sub-apex, apical margin roundly edged, bearing tiny sclerotized projection, beak-shaped, as long as valva.

Female genitalia ( Figure 3 (a), 3(b), 3(c), 3(d)). Papillae anales setose. Apophyses posteriores about twice longer than apophyses anteriores. Apophyses anteriores slightly thicker than apophyses posteriores. Lamella postvaginalis largely developed with sclerotized apex, triangular, several spines medially on inner margin. Lamella antevaginalis large with a pair of lateral lobes, both lobes bearing projection, spine-shaped, as long as lamella postvaginalis. Antrum funnel-shaped, large, wide at base, gradually narrowed to ductus bursae. Seventh sternum bearing a pair of circular projection. Ductus bursae bearing spine, swelled posteriorly, from 1/2 to corpus bursae gradually wider and wrinkled. Corpus bursae large ovate, bearing a signum; signum with numerous tiny spines.

Holotype

Male, Cambodia, Kampot Province, Bokor National Park, 906 m, 10 February 2015, Bae et al. Paratypes. Two females, Cambodia, Cambodia, Pursat Province, Sam Kos , 6 February 2015, Bae et al; three males, five females and two extras (= missing abdomen), same locality, 20 February 2012, Bae et al, gen. slide. no. 9594(M)/ S Kim; one male and two females, Cambodia, Kampot Province, Bokor National Park , 906 m, Bae et al., 10 February 2015, gen. slide. no. 9582(M), 9583(F)/ S Kim; one female, same locality, date and collectors, 950 m, 26 December 2014; two females, same locality, 4 February 2014, Bae et al.; one male and two females, same locality, 16 January 2013, Bae et al.; two males, same locality, 13 July 2012, Bae et al.; one male, Kampot Province, Kirirom National Park , 6 February 2014, Bae et al.; one female, Kep Province, Kep National Park, 19 August 2013, Bae et al.

Etymology

The species epithet, flavidius , is derived from the Latin, flav- (=yellow) plus - idius (=Latin diminutive suffix), referring to the yellow scales apical to the white antemedial band of the forewing.

Distribution

Cambodia (West, South: new).

Figures

Figure 1. Adult of Promalactis. Promalactis ceratiscus sp. nov.: (a) head; (b) wing pattern. P. flavidius sp. nov.: (c) head; (d) wing pattern. P. latifasciata sp. nov.: (e) head; (f) wing pattern. P. mecodigita sp. nov.: (g) head; (h) wing pattern. P. petasumella sp. nov.: (i) head; (j) wing pattern.

Figure 2. Male genitalia of Promalactis. (a-c) Promalactis ceratiscus sp. nov.; (d-f) P. flavidius sp. nov.; (g-i) P. latifasciata sp. nov.; (j-l) P. mecodigita sp. nov.; (m-o) P. petasumella sp. nov.

Figure 3. Female genitalia of Promalactis. (a-d) Promalactis flavidius sp. nov.; (e-g) P. petasumella sp. nov.