Dragmatucha kakumensis Park, 2020

Park, Kyu-Tek, Koo, Jun-Mo, Agassiz, David J. L. & Aarvik, Leif, 2020, A taxonomic review of the Afrotropical genus Dragmatucha Meyrick, 1908 (Lepidoptera, Gelechioidea, Lecithoceridae, Torodorinae), with descriptions of eleven new species, Zootaxa 4786 (2), pp. 151-175 : 171-173

8. Dragmatucha kakumensis Park , sp. nov.

( Figs 13 A–E)

Type material. Holotype: female, Ghana, Western Region, Kakum Forest, Visitors’ Centre , 19 xi 2011, leg. L. Aarvik & L.O. Hansen; gen. slide no. CIS-7198; Wing slide no. CIS-7464; COI barcode CBNU086, in NHMO . Paratype: 1♀, Central Kakum N. P. 150 m, 5°20'54''N 1°23'7''W, 19 xi 2011, leg. D.J.L. Agassiz; gen. slide no. CIS- 7199; COI barcode CBNU101, in NHMUK .

Diagnosis. The forewing pattern of this new species is similar to all species of the hispidula species-group, and the venation of both wings are well accordant with the type species of the genus. The species can be distinguished from its congeners by the forewing markings, especially the peanut-shaped, dark brown zone between postmedian band and termen.

Description. Female ( Figs 13A, C ). Wingspan 12.0 mm. Head: Yellowish white dorsally, with dark brown scales centrally. Antenna as long as forewing; basal segment elongated, dilated distally, dark brown all around; flagellum yellowish white throughout, without annulations. Second palpomere of labial palpus thickened, dark brown speckled with yellowish white scales dorsally, yellowish white ventrally at apex; yellowish white on inner surface; 3 rd palpomere slender, strongly upturned, shorter than 2 nd palpomere, yellowish white at base and beyond 3/4, speckled with dark brown scales medially. Thorax: Tegula yellowish white in anterior half and dark brown in posterior 1/3; thorax densely covered with dark brown scales dorsally, yellowish white scales laterally. Hind tibia yellowish white with dark yellowish-brown piliform scales medially. Forewing ground color dark yellowish brown, with dark brown basal streak; sub-basal band yellowish white; antemedian band narrow, yellowish white, nearly parallel sided, zigzagged margins; a crescent, oblique streak near end of discal cell; postmedian band narrow, yellowish white, slightly broadened at costa; area between postmedian band and termen more or less peanut-shaped, dark brown; costa slightly arched in basal 1/3 and near 2/3, then oblique; apex produced; termen slightly concave beyond M 1; venation ( Fig. 13C ): distance between origins of R 1 and R 2 about 4x of R 2 and R 3; R 3 arising from near upper corner of discal cell, stalked with R 4+5 for basal 1/3; R 5 reaching costa; M 1 remote from R 3+4 at base; M 2 arising from lower corner of cell; M 3 entirely merged to CuA 1; CuA 1 short-stalked with CuA 2; 1A+2A not forked; cell weakly closed. Hind wing of same ground color as forewing, with narrow, yellowish white postmedian band, sharply angled on vein M 2; apex produced; termen sinuate; fringe with yellowish white basal line; venation with M 2 well-developed; M 3 entirely merged with CuA 1; CuA 2 arising from near lower corner of discal cell; Cup well- developed, arising from near base of wing. Abdomen ( Fig. 13E ): Spinous zones on dorsal wall with scattered spines; tergite VIII convex on caudal margin

Female genitalia ( Fig. 13D ): Apophyses anteriores about 2/5 length of apophyses posteriors. Ostium bursae with irregularly sclerotized plates laterally. Antrum membranous, weakly developed. Ductus bursae narrowed between antrum and ductus bursae. Ductus bursae about 2x length of corpus bursae, broadened in posterior half; ductus seminalis arising from broadened median part of ductus bursae. Corpus bursae large, ovate; signum plate with broad median furrow; upper and lower plate nearly symmetrical, with dense conic spines.

Male unknown.

Distribution. Ghana (Kakum).

Etymology. This species’ name is derived from the type locality.

Remarks. The analysis of the COI sequence places the present species far from the other species. However, it is no doubt that the species belongs to the genus Dragmatucha by morphological characters, including the wing color pattern and the venation of both wings. Further study is required for clarifying this issue.

Figures

FIGURE 13. Dragmatucha kakumensis Park, sp. nov.: A, adult, holotype; B, label; C, venation, wing slide no. CIS-7464; D, female genitalia, paratype, with close-up signum, gen. slide no. CIS-7199; E, abdomen, with spinous zones.