Promalactis semiovata Wang, Du & Li, 2013

Wang, Shuxia, Du, Zhaohui & Li, Houhun, 2013, Taxonomic study of the genus Promalactis Meyrick, 1908 from Southeast Asia (Lepidoptera: Oecophoridae), Zootaxa 3669 (4), pp. 401-455 : 425-427

Promalactis semiovata Wang, Du & Li , sp. nov.

( Figs 21 , 53 )

Type material: Holotype ♂, MALAYSIA, Fraser’s Hill (3º43'N, 101º44'E), Pahang, 1520 m, 10−12.viii.2001, leg. W. Mey, genitalia slide No. MNHU-NK006 ( MNHU) . Paratype: 1 ♂, Genting Highlands (3º25'N, 101º47'E), Pahang, 1341 m, 17.xi.1981, at MV light, leg. K. R. Tuck, BM 1981−549, genitalia slide No. BMNH-33537 ( BMNH) .

Description. Imago ( Fig. 21 ) with wingspan 11.0 mm. Head with vertex shining silvery white, mixed with gray posteriorly, frons light yellowish brown mixed with gray, occiput ochreous brown. Labial palpus with basal and second segments ochreous brown mixed with dark brown on outer surface, basal segment light gray on inner surface, second segment ochreous yellow on inner surface; third segment black, white at base and apex, shorter than second. Antenna with scape white; flagellum with basal three flagellomeres white, remaining ones white and black on dorsal surface, dark brown on ventral surface. Thorax and tegula ochreous brown, thorax with two small white spots at apex. Forewing ferruginous, costal margin grayish black; markings white edged with black scales: basal streak from base of fold to basal 1/5 of dorsum, a fascia from below costal 1/4 to middle of dorsum, a triangular white patch from costal 2/3 extending inward to near lower angle of cell; dorsal margin with a streak from before tornus extending outward to lower angle of cell, sometimes broadened posteriorly; apex with a triangular white spot; termen scattered with sparse black scales; cilia gray mixed with ochreous brown, white on costal margin near apex. Hindwing with basal 2/5 light gray, distal 3/5 gray, cilia gray. Foreleg black, tibia with white spot at base and middle on dorsal surface, with a tuft of short white scales at apex, tarsus with white spots on dorsal surface; midleg gray on ventral surface, black on dorsal surface, tibia with a white spot at base on dorsal surface, with a tuft of long white scales at apex, tarsus with white spots on dorsal surface; hindleg yellow on ventral surface, gray on dorsal surface, tarsus with white spots on dorsal surface.

Male genitalila ( Fig. 53 ). Uncus broad at base, gradually narrowed to 3/5, heavily sclerotized laterally; distal 2/ 5 slender, curved ventrad, with sparse setae, pointed at apex. Gnathos tongue shaped, almost same length as uncus, distal 1/4 scobinate, with a semi-oval ventral process before apex. Tegumen projected at posterior 1/3 laterally, branched from posterior 2/3, bluntly rounded anteriorly. Valva narrow basally, widened distally, ventral margin serrate, setose ventrally; costa projected before apex; apex rounded, with an arched notch medially, forming two teeth: dorsal tooth with a sclerotized ridge, ventral tooth indistinct. Sacculus broad at base, narrowed to 4/5, distal 1/5 slightly broadened, enlongately ovate, with dense setae. Saccus digitate, rounded at apex, almost same length as uncus. Juxta narrow at base, with a thin digitate basal process, widened to basal 1/4, then narrowed to pointed apex, apically reaching near middle of tegumen. Aedeagus gently curved, about 1.5 x length of valva, with a curved, sclerotized plate at apex; two spine-like cornuti present: one straight, thin, situated at basal 1/3, another curved, thick, situated at distal 1/5.

Female unknown.

Diagnosis. This new species is similar to P. roesleri Lvovsky, 2000 , but can be separated by the valva with a sclerotized ridge on the dorso-apical tooth, the ventro-apical tooth indistinct, the juxta with apex reaching near middle of the tegumen, and the distal cornutus being a single spine. In P. roesleri Lvovsky , the dorso-apical tooth of the valva does not have a sclerotized ridge, the ventro-apical tooth is distinct, the juxta does not reach anterior 1/3 of tegumen apically, and the distal cornutus consists of three base-joined spines.

Distribution. Malaysia (Pahang).

Etymology. The specific name is derived from the Latin semiovatus (= semi-oval), referring to the gnathos having a semi-oval ventral process near apex in the male genitalia.

Figures

FIGURES 17–24. Adults of Promalactis spp. 17, P. medispinata sp. nov., holotype; 18, P.palmifolia sp. nov., holotype; 19, P. pectinifera sp. nov., holotype; 20, P. sectoralis sp. nov., holotype; 21, P.semiovata sp. nov., holotype; 22, P.sinualis sp. nov., holotype; 23, P. spinosicostalis sp. nov., holotype; 24, P.strena sp. nov., holotype (17–21, 23, 24: ♂, 22: ♀).

FIGURES 53–58. Male genitalia of Promalactis spp. 53, P. semiovata sp. nov., holotype, slide No. MNHU-NK006; 54, P. spinosicostalis sp. nov., paratype, slide No. MNHU-NK022; 55, P. strena sp. nov., holotype, 55a, enlarged apical spines of cornutus, slide No. BMNH-33543; 56, P. superimposita sp. nov., holotype, 56a, enlarged apical process of gnathos, slide No. ZMUC-NK002; 57, P. truncatapicalis sp. nov., holotype, slide No. MNHU-NK023; 58, P. undulata sp. nov., holotype, slide No. MNHU-NK002.