Promalactis strena 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 : 429

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

( Figs 24 , 55 )

Type material: Holotype ♂, MALAYSIA, Genting Tea Estate (4º25'N, 101º23'E), West Pahang, 610 m, 3.iii.1982, leg. H. S. Barlow, BM 1982−247, genitalia slide No. BMNH-33543 ( BMNH) . Paratype: 1 ♂, Jeriau Road, Fraser’s Hill (3º43'N, 101º44'E) [Pahang], 1140 m, 5−12.viii.1986, leg. G. S. Robinson, BM 1986−299, genitalia slide No. BMNH-33544 ( BMNH) .

Description. Imago ( Fig. 24 ) with wingspan 10.0 mm. Head with vertex shining white, frons brown, occiput dark ochreous brown. Labial palpus with basal and second segments ochreous yellow on inner surface, ochreous brown on outer surface, second segment white at apex on ventral surface; third segment black except white at base and apex, almost same length as second. Antenna with scape white on dorsal surface, yellow on ventral surface, pecten dark brown; flagellum with basal three flagellomeres white, remaining ones white and dark brown on dorsal surface, dark brown on ventral surface. Thorax and tegula dark ochreous brown, thorax with two white spots at apex. Forewing ferrugineous, markings white edged with dark brown scales: first fascia from below base of costal margin to basal 1/5 of dorsum, discontinuous anteriorly; second fascia from below costal 1/5 to 3/5 of dorsum, slightly arched; third fascia from costal 2/3 obliquely extending to tornus, its anterior half broad triangular, posterior half very narrow, with dense dark-brown scales anteriorly on inner margin and at middle on outer margin, forming indistinct spots; apex with a small oval white spot; cilia ochreous brown mixed with dark gray, tinged with white on costal margin near apex. Hindwing and cilia gray. Foreleg black, tarsus with white spots on dorsal surface; midleg gray on ventral surface, black on dorsal surface, tibia with a white spot at base, with a tuft of long white scales at apex, tarsus with white spots on dorsal surface; hindleg yellow on ventral surface, grayish black on dorsal surface, tarsus with white spots on dorsal surface.

Male genitalia ( Fig. 55 ). Uncus small, weakly sclerotized, narrow at base, broadened to rounded apex. Gnathos membranous, sclerotized laterally. Tegumen branched from posterior 1/4, with two elliptic lateral processes near posterior margin. Valva slightly narrowed at base, broadened distally; costa concave at base, slightly projected at middle; ventral margin with a very small, spine-like process directing downward at distal 1/5; apex bluntly rounded, setose, with two processes: dorsal process elongate, thumb-like, ventral process short, about 1/3 length of dorsal one, spine-like, slightly curved upward. Sacculus moderate, with a small V-shaped notch at 2/3, distal half with dense setae. Saccus about 1/2 length of valva, broad at base, narrowed to 2/5, distal 3/5 slender, apex rounded. Juxta large, with a slender handle at base; lateral lobes short and very broad, nearly triangular, apex reaching anterior 2/5 of tegumen. Aedeagus with basal 2/5 narrow, distal 3/5 very broad; with two strong cornuti: one elongate, rod-like, about 3/5 length of aedeagus, with many short apical spines, one of which is very large; the other spine-like, about 1/3 length of aedeagus.

Female unknown.

Diagnosis. This new species is extremely similar to P. palawanella Lvovsky, 2000 . It can be separated by the tegumen with two elliptic lateral processes near posterior margin, the costa concave at base and the dorso-apical process of the valva thumb-like in the male genitalia. In P. palawanella , the tegumen is slightly projected laterally near posterior margin, the costa is projected at base and the dorso-apical process of the valva is hill-like.

Distribution. Malaysia (Pahang).

Etymology. This specific name is derived from the Latin strenus (= strong), referring to the two strong cornuti 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.