Promalactis medispinata 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 : 421-422

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

( Figs 17 , 48 )

Type material: Holotype ♂, MALAYSIA, Mt. Kinabalu Headquarter (6°04'N, 116°36'E), Borneo, 1600 m, 10−13.xi.2006, leg. W. Mey & K. Ebert, genitalia slide No. MNHU-NK001 ( MNHU).

Description. Imago ( Fig. 17 ) with wingspan 11.0 mm. Head with vertex shining white, frons yellowish brown mixed with grayish white, occiput brown. Labial palpus with basal and second segments yellow intermixed white on inner surface, yellowish brown intermixed dark brown on outer surface, second segment black at apex; third segment black except white at base, almost same length as second. Antenna with scape white, pecten dark brown; flagellum white and dark brown on dorsal surface, dark brown on ventral surface. Thorax and tegula brown. Forewing ochreous brown mixed with black scales, costal margin black along basal 1/4, with white fasciae and spot edged with black scales: first fascia extending from base of costal margin to basal 1/5 of dorsum; second fascia extending obliquely from about costal 1/4 to basal 3/5 of dorsum, arched outward; third fascia from about costal 2/ 3 obliquely inward to tornus, its anterior half very broad, subtriangular, posterior half very narrow; a subtriangular spot at apex, with scattered dark-brown scales along termen and distal 1/3 of costal margin; cilia ochreous yellow mixed with gray, white along distal part of costal margin. Hindwing and cilia gray. Foreleg black, tibia dorsally with white spot at base and middle, with a tuft of short white scales at apex, tarsus with white spots on dorsal surface; midleg with tibia and tarsus yellow mixed with black on ventral surface, black on dorsal surface, tibia with a tuft of long white scales at apex, tarsus with white spots on dorsal surface; hindleg yellow on ventral surface, yellow mixed with dark gray on dorsal surface, tarsus with white spots on dorsal surface.

Male genitalia ( Fig. 48 ). Uncus heavily sclerotized, very short, broad, nearly quadrate, with paired hornshaped postero-lateral processes, curved inward. Gnathos sclerotized, longer than uncus, basal 3/10 very broad, nearly parallel laterally, then abruptly narrowed to 3/5, distal 2/5 very slender, narrowly rounded at apex. Tegumen branched from near middle, obliquely truncate anteriorly. Valva heavily sclerotized, almost quadrate except narrower basally and distally, costa slightly projected near basal 1/3; apex roundly concave medially, forming two processes: dorsal process broad triangular, ventral process about 1/2 width of dorsal one, apex pointed and curved backward; slightly asymmetrical: left valva narrower and longer, dorso-apical process smaller, blunt at apex, right valva broader and a little shorter, dorso-apical process larger, pointed at apex. Sacculus broad at base, gradually narrowed to about 2/3, distal 1/3 slightly broadened, nearly elongate ovate. Saccus about 2/3 length of gnathos, broad at base, abruptly narrowed to 2/3, distal 1/3 slender, rounded apically. Juxta heavily sclerotized, with a large, saccate basal process, gradually widened distally; posterior margin broadly concave in V shape, with asymmetrical lateral lobes: left one short and thin, thorn-like, apex pointed, reaching near middle of tegumen; right one long and broad, slightly curved inward, distal 2/5 serrate marginally, ventral margin with a thin spine at distal 2/5, acute at apex, reaching posterior margin of uncus. Aedeagus short, gently curved, about 4/5 length of left valva; one cornutus present, spine-like, long, about 3/5 length of aedeagus, with two short spines at middle.

Female unknown.

Diagnosis. This new species is similar to P. dolokella Lvovsky, 2000 . It can be distinguished by the uncus with paired horn-shaped postero-lateral processes, the asymmetrical valva concave at apex, and the aedeagus about 4/5 length of the left valva in the male genitalia. In P. dolokella , the uncus has no horn-shaped postero-lateral processes, the valva is symmetrical and not concave at apex, the aedeagus is about 1.4 x length of the valva in the male genitalia.

Distribution. Malaysia (Borneo).

Etymology. The specific name is derived from the Latin prefix medi- (= middle), and the Latin spinatus (= having spines), referring to the cornutus having two spines at middle 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 47–52. Male genitalia of Promalactis spp. 47, P. latuncata sp. nov., holotype, slide No. BMNH-33565; 48, P. medispinata sp. nov., holotype, slide No. MNHU-NK001; 49, P. lophacantha sp. nov., holotype, slide No. BMNH-33550; 50, P. palmifolia sp. nov., holotype, slide No. BMNH-33541, 50a, showing the variation of the juxta, slide No. BMNH-33542; 51, P. pectinifera sp. nov., holotype, slide No. BMNH-33534; 52, P. sectoralis sp. nov., holotype, 52a, enlarged distal process of aedeagus with dense spines, slide No. BMNH-33539.