Promalactis spinosicostalis 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 : 428

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

( Figs 23 , 54 , 70 )

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-NK012 ( MNHU) . Paratypes: 1 ♀, Mt. Kinabalu, kalanggaan, Borneo , 1400 m, 9−13.viii.2005, leg. W. Mey & K. Ebert, genitalia slide No. MNHU- NK019 ( MNHU) ; 1 ♂, light tower, Liwagu River Trail, Mt. Kinabalu NP, Sabah, Borneo , 1500 m, 10−13.viii.2005, leg. Mey & Ebert, genitalia slide No. MNHU-NK022 ( MNHU) .

Description. Imago ( Fig. 23 ) with wingspan 10.0−11.0 mm. Head with vertex and frons shining milk-white, occiput dark brown. Labial palpus with basal and second segments dark brown on outer surface, first segment white on inner surface, second segment dark ochreous yellow on inner surface; third segment with basal 1/4 white, distal 3/4 dark brown, apex white, longer than second. Antenna with scape white, black at apex; flagellum white and black on dorsal surface, dark brown on ventral surface. Thorax and tegula dark ochreous brown. Forewing ochreous brown, markings white edged with black scales: first fascia from base of costal margin to basal 1/5 of dorsal margin, second fascia extending obliquely from 1/4 of costal margin to middle of dorsal margin, slightly arched outward, broader anteriorly, with some black scales on outside anteriorly; costal margin with a subtriangular white patch at 2/3, extending down across midwing, tinged with dark-gray scales on posterior and outer margins, with very small triangular dark-gray spot antero-laterally; an irregularly quadrangular, dark-gray spot before tornus, extending to posterior margin of costal patch, its inner edge with black scales, outside with a small white spot at tornus; apex with a white spot, extending downward along termen, edged with black scales on its inner margin; cilia orange yellow mixed with black, dark gray along distal part of costal margin, gray along distal part of dorsal margin. Foreleg black, tibia with three equational white spots on dorsal surface, tarsus with white spots on dorsal surface; midleg black on dorsal surface, gray on ventral surface, tibia with a white spot near 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 genitalia ( Fig. 54 ). Uncus broad, sclerotized laterally, basal 1/3 parallel laterally, narrowed to 3/4, distal 1/4 broadened to straight apex. Gnathos about 3/5 length of uncus, broad tongue shaped, scobinate, narrowly rounded at apex; lateral arms short, triangular, about 1/2 length of gnathos. Tegumen narrow, branched from posterior 3/5, rounded anteriorly. Valva narrow; costa about 3/4 length of valva, with dense long spines on ventral margin except at base, distal 2/5 with denser and longer spines; ventral margin rough, concave medially; apex bluntly rounded, setose, with a small notch at middle. Vinculum roundly projected postero-medially, forming a transverse, arched narrow band; saccus large, about twice length as uncus, very broad at base, gradually narrowed to 2/3, distal 1/3 thumb-like, rounded at apex. Juxta broadly leaf-like, very narrow at base, with a slender basal handle reaching 3/5 length of saccus, folded laterally from basal 1/4 to 3/5, distal 2/5 spinulose laterally, apex narrowly rounded, reaching posterior 1/5 of tegumen. Aedeagus straight, basal 2/5 thin, distal 3/5 gradually broadened, with a large densely spinulose bursa near apex, apex flower-like; cornutus very thin, indistinct, about 1/ 3 length of aedeagus.

Female genitalia ( Fig. 70 ). Apophysis anterioris about 2/3 length of apophysis posterioris. Lamella postvaginalis heavily sclerotized, nearly oval, with two equational, sclerotized longitudinal folds at middle. Ductus bursae short, about 1/3 length of corpus bursae, sclerotized near base, with two elongately triangular, weakly sclerotized plates extending to posterior 3/10 of corpus bursae. Corpus bursae elongately ovate, membranous; with three signa: one large, olivary, bearing two small strumae at middle; two small, nearly rounded, with small teeth on right margin, placed at both sides of the larger one.

Diagnosis. This new species is similar to new species P. angusta sp. nov., but can be separated by the costa with dense spines on ventral margin, the broad juxta not bilobed and the aedeagus with a large bursa bearing spinules distally in the male genitalia. In P. angusta sp. nov., the costa has no spines, the juxta is narrow and bilobed in distal 1/5 and the aedeagus has no bursa bearing spinules distally.

Distribution. Malaysia (Borneo).

Etymology. The specific name is derived from the Latin spinosus (= having many spines) and the Latin costalis (= costa), referring to the ventral margin of the costa having dense spines 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.

FIGURES 70–73. Female genitalia of Promalactis spp. 70, P. spinosicostalis sp. nov., 70a, enlarged strumae of olivary signum, slide No. MNHU-NK019; 71, P. superimposita sp. nov., 71a, enlarged signum, slide No. ZMUC-NK001; 72, P. diehli Lvovsky, 72a, enlarged spines of signum, slide No. MNHU-NK014; 73, P. semantris (Meyrick), 73a, enlarged signum, slide No. ZMUC-NK014.