Promalactis undulata 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 : 432-433

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

( Figs 27 , 58 )

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-NK002 ( MNHU) .

Description. Imago ( Fig. 27 ) with wingspan 10.0 mm. Head with vertex shining white, frons shining leaden, occiput ochreous brown. Labial palpus with basal and second segments dark ochreous yellow on outer surface, basal segment white on inner surface, second segment orange yellow except white at base on inner surface; third segment black, slightly longer than second. Antenna with scape white; flagellum white and black on dorsal surface, dark brown on ventral surface. Thorax and tegula dark ochreous brown. Forewing ferrugineous; costal margin with an oval white patch at about 2/3, edged with black scales except on anterior margin, extending down across midwing, with denser black scales anteriorly on inside, forming an indistinct black spot; two white streaks arising from dorsal margin edged with black scales: basal one from basal 1/5 to base of fold, second one parallel to basal one, from beyond middle to Sc vein; tornus with a nearly semicircular dark-gray spot, edged with sparse black scales except on dorsum; apex with a trapeziform spot, dark gray intermixed with black scales, a dark-gray dot below it; cilia yellow, gray along distal part of costal and dorsal margins. Hindwing and cilia gray. Foreleg black, tibia dorsally with white spot near base and at middle, with a tuft of short white scales at apex, tarsus with white spots on dorsal surface; midleg grayish white on ventral surface, black on dorsal surface, tibia dorsally 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, gray on dorsal surface, tarsus with white spots on dorsal surface.

Male genitalia ( Fig. 58 ). Uncus with basal 1/4 nearly sub-quadrangular, distal 3/4 slender, sinuate, with a somewhat digitate process at middle ventrally; apex bifurcate, forming two small, spine-like processes. Gnathos heavily sclerotized, slender, hooked distally, about 1/2 length of uncus; lateral arms narrow, about 3/5 length of gnathos. Tegumen somewhat semi-elliptic, branched from near middle, narrowing anteriorly. Valva broad at base, slightly narrowed to before apex; apex bilobed: dorsal lobe slender, first curved distad, forming an obtuse angle at basal 1/3, then curved downward, forming a right angle at distal 1/4; ventral lobe large and broad, nearly quadrangular, directing upward, sinuate and dentate marginally except on dorsal margin; costa slightly concave, with a sclerotized band extending from near base to basal 1/3 of dorsal lobe. Sacculus narrowed to before apex of valva. Saccus short, semi-oval, about 1/3 length of sacculus. Juxta slender and straight, heavily sclerotized, pointed at apex, reaching near middle of tegumen. Aedeagus broad basally and distally, thin medially, narrowly rounded apically, about 1.4 x length of valva, with a sclerotized, sinuate distal process dorsally; cornutus a thin spine, indistinct.

Female unknown.

Diagnosis. This new species is similar to P. raptitalella Lvovsky, 2000 , but can be distinguished by the uncus with a sclerotized digitate process ventrally, the slender gnathos not bifurcate distally, the dorso-apical lobe of the valva curved and the sacculus without tuft of setae at apex in the male genitalia. In P. raptitalella , the uncus does not have process ventrally, the gnathos is broad trapeziform and bifurcate distally, dorso-apical lobe of the valva is straight and the sacculus has a tuft of setae at apex in the male genitalia.

Distribution. Malaysia (Pahang).

Etymology. The specific name is derived from the Latin undulatus (= sinuate), referring to the uncus being sinuate on distal 3/ 4 in the male genitalia.

Figures

FIGURES 25–34. Adults of Promalactis spp. 25, P.superimposita sp. nov., paratype; 26, P. truncatapicalis sp. nov., holotype; 27, P. undulata sp. nov., holotype; 28, P. vulvida sp. nov., holotype; 29, P.diehli Lvovsky; 30, P. mentawirella Lvovsky; 31, P. nabokovi Lvovsky; 32, P. parasuzukiella Wang; 33, P. semantris (Meyrick); 34, P.similiflora Wang(25–31, 33, 34: ♂, 32: ♀).

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.