Pectinimura brahmanica Park

Park, Kyu-Tek, 2011, Lecithoceridae (Lepidoptera: Gelechioidea) of New Guinea, Part IV: Genus Pectinimura Park with descriptions of four new species and four new combinations, Zootaxa 3040, pp. 43-54 : 47-49

Pectinimura brahmanica Park , sp. nov.

( Figs. 3, 3 a, 11, 11a, 11b)

Type material. HOLOTYPE: 3, Papua New Guinea, Madang, Brahman Mission, 200 m, 11–15 x 1992, V.O. Becker, Col. Becker PNG 2985, gen slide no. CIS-5892/Park. PARATYPES: 3 3, same locality as the holotype, wing prep. no. CIS-5924; 1 3, Madang, Brahman Mission, 200 m, 11–15 x 1992, V.O. Becker, Col. Becker, PNG 2981, gen. slide no. CIS-5891/Park. Types are in the USNM.

Diagnosis. This new species is externally similar to Lecithocera submersa Daikonoff , but can be distinguished from the latter by having the more elongate forewing with acute apex and the more grayish hindwing. The male genitalia are characterized by the elongate valva, the subapical process of tegumen, and the well developed coremata in abdominal segments.

Description. Male. Forewing length 5.0–5.5 mm. Head pale yellowish brown medially, orange white laterally. Basal segment of antenna orange white, slender; flagellum oange white throughout, with blackish apical part. Second segment of labial palpus thickened, yellowish brown, speckled with blackish scales on outer surface, orange white on inner surface; 3rd segment as long as 2nd segment, orange white for 2/3 length, then brownish in apical 1/3, paler on inner surface. Tegula yellowish brown, with dark-brown scales anteriorly; thorax yellowish brown on dorsal surface. Forewing uniform covered with yellowish-brown scales, with broad, orange-white band along costa from base to apex; a round blackish discal spot at middle and another larger one at end of cell; blackish spots along termen; costa nearly straight, with dark- brown scales basally; apex rounded; termen concave medially; venation with R1 arising before middle of cell; distance between R1-R2 greater than that of R2-R3; R3 free from R4+5 at base; R4 and R5 stalked for 2/3 length; R5 reaching apex; M1 remote from R4+5 at base; M2 nearly parallel to M1, remote from M3 at base; M3 free; CuA1 and CuA2 stalked at basal 1/5 of CuA1; cell closed with weak cross vein. Hindwing as wide as forewing; costa slightly convex; apex acute; termen oblique, nearly straight; venation with Rs and M1 short stalked; M2 absent; CuA1 and CuA2 stalked for 2/3 length. Female unknown.

Male genitalia (Figs. 11, 11a–b). Basal lobes of uncus subovate, large. Gnathos short, strongly bent downward with acute apical part. Tegumen with digitate processes subapically. Costal bar well developed, with acute angle medially. Valva elongate; costa strongly concave medially; cucullus spatulate, broadly dilated distally, with round apex; ventral margin with small median expansion; row of pectinate plate arched; sacculus short, sclerotized, terminated near 1/5 of margin. Juxta shield-shaped, deeply concave on caudal margin. Vinculum broad, with round apex. Aedeagus slightly longer than valva, slender, strongly bent medially, with sclerotized plate ventrally; cornuti consist of 4–8 short, triangular, heavily sclerotized sclerites. Abdominal segment with long coremata, longer than twice of aedeagus.

Distribution. Papua New Guinea (Madang).

Etymology. The species name is derived from the type locality.

Pectinimura gilvicostata Park , sp. nov. ( Figs. 4, 4 a, 12, 12a, 12b)

Type material. HOLOTYPE: 3, Papua New Guinea, Morobe, Wau, 1200 m, 17–30 ix 1992, V.O. Becker Col., Col. Becker PNG 854, gen. slide no. 5981/Park. PARATYPES: 1 3, same data as the holotype; 1 3, Morobe, Wau, Wau Ecol. Inst., 1200 m, 1–10 viii 1983, S.E. & P.M. Miller, Secondary montane forest, gen. slide no. CIS-5649/ Park; 1 3, Morobe, Wau, 1200 m, 8–14 xii 1976, mercury vapor light G.F. Hevel & R.E. Dietz, gen. slide no. CIS- 5766/Park. Types are in the USNM.

Diagnosis. This new species is externally similar to P. brahmanica sp. nov. but it can be distinguished from the latter by its larger in size, the forewing with a more prominent orange white band along the costal margin, a sharply pointed apex, and very oblique termen; and the hindwing with M2 present. The male genitalia are also very similar, but can be distinguished by the tegumen with a large, spatulate subapical process, the more slender valva, the stouter aedeagus, and the shorter coremata in the abdominal segment.

Description. Male. Forewing length, 7.5–8.0 mm. Head pale-yellowish brown centrally, orange white dorsolaterally. Basal segment of antenna orange white, slender; flagellum oange white throughout. Second segment of labial palpus thickened, yellowish brown on outer surface, orange white on inner surface; 3rd segment shorter than 2nd segment, pale-brownish yellow on outer surface, paler on inner surface. Tegula yellowish brown; thorax yellowish brown on dorsal surface. Forewing densely covered with uniform brownish gray scales; a broad orange white band from base to apex along costa; a large dark-brown discal spot at end of cell; dark-brownish small spots along termen; costa nearly straight, dark brown for ¼ length anteriorly; apex acute; termen concave; fringe pale-grayish brown, with paler basal line; venation with R1 arising from middle of cell; distance between R1-R2 as long as that of R2-R3; R3 stalked for 2/5 length with R4+5; R4 and R5 stalked for 3/4 length; R5 reaching apex; M1 approximate to R3+4+5 at base; M2 nearly parallel to M3; M3 arising nearer to CuA1+2 than M2 at base; CuA1 and CuA2 stalked at basal 1/5 of CuA1; cell closed with weak cross vein. Hindwing broader than forewing; costa nearly straight; apex sharply produced; termen oblique, sinuate; venation with Rs and M1 short stalked; M2 present, closer to M3 at base; M3 and CuA1 stalked for 1/3 length; CuA2 free. Hind tibia pale orange dorsally, with short scales. Female unknown.

Male genitalia (Figs. 12, 12a, 12b). Gnathos slender, gently arched, with acute apex. Tegumen with large spatulate process subapically. Costal bar well developed, with prominent median angle. Valva elongate, median part between base and cucullus narrowed; costa concave medially; cucullus longer than basal part, triangular, dilated distally with round apex; ventral margin slightly expanded before middle; pectinate plate nearly straight, near to margin; sacculus weakly sclerotized, terminated before cucullus. Juxta shield-shaped; with deeply concave on caudal margin. Vinculum broad, with round apex. Aedeagus as long as valva, stout, strongly bent at 1/3 ventrally; apex pointed with apical spine ventrally; cornuti consist of a sclerotized plate as long as ¼ of aedeagus, more than 6 triangular, heavily sclerotized sclerites, and a broad patch of numerous spinues, occupying basal half of aedeagus. Abdominal coremata well developed, shorter than 1.5 times of aedeagus.

Distribution. Papua New Guinea (Morobe).

Etymology. The species name is derived from Latin gilvus (= pale yellow or orange white), referring to the orange white band on costa.

Figures

FIGURES 1 – 4. Adults and labial palpus of Pectinimura species (a: labial palpus): 1, P. singularis sp. nov., holotype; 2, P. a re - ola sp. nov., holotype; 3, P. brahmanica sp. nov., holotype; 4, P. gilvicostata sp. nov., holotype.