Promalactis diehli Lvovsky, 2000

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 : 434-435

Promalactis diehli Lvovsky, 2000

( Figs 29 , 60 , 72 )

Promalactis diehli Lvovsky, 2000b: 682 . Type locality: Indonesia (Sumatra).

Materials examined. MALAYSIA: 1 ♀, Fraser’s Hill , Pahang, 1520 m, 10−12.viii.2001, leg. W. Mey, genitalia slide No. MNHU-NK014 ( MNHU) ; 1 ♂, Genting Tea Estate, W. Pahang, 610 m, 1−8.xi.1981, leg. K. R. Tuck, BM 1981−549, genitalia slide No. BMNH-33569 ( BMNH) .

Redescription. Imago ( Fig. 29 ) with wingspan 11.5 mm. Head with vertex shining white, frons yellowish brown mixed with grayish white, occiput dark brown. Labial palpus with basal and second segments ochreous yellow on inner surface, ochreous brown on outer surface; third segment dark ochreous brown, about same length as second. Antenna with scape white; flagellum with basal several flagellomeres white, remaining ones white and dark brown on dorsal surface, dark brown on ventral surface. Thorax and tegula dark ochreous brown. Forewing ochreous brown, dark ochreous brown from above fold to dorsal margin; costal margin black along basal 1/4, with a triangular spot at about 3/5 oblique outward to midwing, edged with black scales except on anterior margin; markings white, edged with black scales: three white streaks arising from dorsal margin: first one from basal 1/4 to above base of fold, second one from basal 2/5 to basal 2/5 of upper margin of cell, third one from basal 3/4 to near lower angle of cell; tornus with a small triangular spot, with scattered dark-brown scales above diffused to apex of third streak; apex with a large wedge-shaped spot extending to middle of termen; cilia dark ochreous yellow, gray along distal part of costal and dorsal margins. Hindwing and cilia gray. Foreleg black, tibia white on inner surface, with white dot at base and middle on dorsal surface, with a tuft of white scales at apex, tarsus with white spots on dorsal surface; midleg with tibia and tarsus gray on ventral surface, black on dorsal surface, tibia with white spots on dorsal surface, with a tuft of long white scales at apex, tarsus with white spots on dorsal surface; hindleg yellow on ventral surface, black on dorsal surface, tarsus with white spots on dorsal surface.

Male genitalia ( Fig. 60 ). Uncus broad, nearly vaulted, sclerotized marginally, projected medially on posterior margin, forming a small papillary process. Gnathos narrowly tongue shaped, bent upward, scobinate, narrowly rounded at apex; lateral arms short, about 2/3 length of gnathos. Tegumen branched from posterior 1/2, blunt anteriorly. Valva nearly trapeziform, very broad and short; apex serrate, with two heavily sclerotized processes, asymmetrical: left valva with dorsal process triangular, sclerotized dorsally, rounded apically, ventral process nearly beak shaped, serrate dorsally, slightly bent upward, with a large apical tooth; right valva with dorsal process stout cone shaped, rounded at apex, ventral process short, with a larger dorsal tooth; costa very short, about 1/5 length of ventral margin, slightly concave. Sacculus weak, broad at base, gradually narrowed to apex. Saccus about 1.3 x length of uncus, subtriangular, rounded at apex. Juxta elongate, slender and curved, rod-like, basal 2/5 tapering, distal 3/5 same diameter, apex with four short spines, reaching apex of uncus. Aedeagus curved, slightly shorter than total length from apex of uncus to apex of saccus, rounded and serrate at apex; cornutus absent.

Female genitalia ( Fig. 72 ). Apophysis anterioris about 1/3 length of apophysis posterioris. Lamella postvaginalis large and heavily sclerotized, voluted, basal half tubular, distal half trough shaped, with two blunt lateral spines near apex, with a setose, semicircular median process at apex, which is sinuate marginally and has a longitudinal median ridge. Ductus bursae with posterior 2/5 heavily sclerotized and curved, anterior 3/5 narrow, membranous, with a sclerotized, thin, volute band at anterior 1/3, bearing two or three spines near middle. Corpus bursae small, nearly oval, membranous, with dense granules; signum an ovate plate, with two groups of spine-like processes: one group including a large and a small process, the other group including two equal processes.

Diagnosis. This species is similar to P. spatulata Wang, 2006 , but can be separated by the asymmetrical valva, the apex of the juxta with four short spines and reaching apex of the uncus in the male genitalia; the lamella postvaginalis with basal half tubular, distal half broadly trough shaped, and the ductus bursae curved in posterior 2/ 5 in the female genitalia. In P. spatulata , the valva is symmetrical, the apex of the juxta has no spine and reaches posterior 1/3 of the tegumen in the male genitalia; the lamella postvaginalis is trapeziform and the ductus bursae is straight in the female genitalia.

Variation. In the specimens collected from Malaysia, the medio-apical process of the lamella postvaginalis has a sclerotized, longitudinal, median ridge at apex in the female genitalia, while in the specimens collected from the type locality, it is concave medially at apex and such a ridge is absent in the female genitalia .

Distribution. Indonesia (Sumatra), Malaysia (Pahang).

Notes. This species is newly recorded in Malaysia.

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 59–62. Male genitalia of Promalactis spp. 59, P. vulvida sp. nov., holotype, slide No. BMNH-33549; 60, P. diehli Lvovsky, slide No. BMNH-33569; 61, P. mentawirella Lvovsky, slide No. BMNH-33546; 62, P. nabokovi Lvovsky, 62a, enlarged distal process of uncus, slide No. MNHU-NK017.

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.