Dragmatucha dizostera 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 : 169-171

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Dragmatucha dizostera Park

sp. nov.

7. Dragmatucha dizostera Park , sp. nov.

( Figs 12 View FIGURE 12 A–G)

Type material. Holotype: male, Uganda, Mpigi, Mpanga Forest , 25–30 xi 2014, LF leg. W. Mey; gen. slide no. CIS-7468, in MfN.

Diagnosis. This species is also similar to the two preceding species in the forewing pattern, but it can be distinguished by the postmedian band being curved outwardly, reaching near tornus on inner margin, and followed by well-developed yellowish white transversal bands. The male genitalia are characterized by the large, horn-shaped uncus and the cucullus subtriangular with round apex.

Description. Male ( Figs 12A, B View FIGURE 12 ). Wingspan 13.0 mm. Head: Yellowish white dorsally, with yellowish brown scales centrally. Antenna shorter than forewing; basal segment elongated, dark brown all around; flagellum yellowish white throughout, without annulations. Second palpomere of labial palpus thickened, arched, dark brown on outer surface and dorsally, yellowish white at apex; yellowish white on inner surface and ventrally; 3 rd palpomere slender, strongly upturned, as long as 2 nd palpomere, yellowish white in basal half and dark brown in distal half dorsally. Thorax: Tegula creamy white, with blackish scales on anterior margin; thorax creamy white dorsally, with dark fuscous, oblique bands arising from middle and obliquely extended to lateral margins anteriorly. Hind tibia white in basal 1/3 and with dark yellowish-brown piliform scales in distal 2/3 all around, mixing with white scale distally. Forewing ground color yellowish brown; black at base, with creamy white sub-basal streak; antemedian band narrow, yellowish white, nearly parallel sided, zigzagged margins; postmedian band narrow, strongly curved at middle inwardly, arising from costa and reaching near tornus on inner margin, gradually broadened toward costa beyond middle; two yellowish white transverse bands well-developed beyond postmedian band: upper one longer and broader, reaching termen; lower one shorter, not reaching termen; apex more or less acute; termen slightly concave beyond apex; fringe yellowish white beyond apex to anterior 1/3 of termen, then yellowish brown with yellowish white basal line in posterior 2/3. Hind wing yellowish brown; postmedian band yellowish white, arising from 3/4 of costa to vein M 2. Abdomen ( Fig. 12G View FIGURE 12 ): Spinous zones on dorsal surface broad, densely spiny; tergite VIII with heavily sclerotized, crescent sclerite along anterior margin; sternite VIII not modified.

Male genitalia ( Figs 12 View FIGURE 12 C–F): Uncus large, horn-shaped, with acute apex. Basal plate of gnathos triangular in distal part, with acute apex; median process large, broad in basal half, strongly bent beyond middle, with sharply pointed apex. Tegumen weakly sclerotized, gently concave on anterior margin. Valva narrowed medially; costa convex near base, then oblique; ventral margin nearly straight before ventral margin of cucullus; sacculus weakly developed, triangular basally; cucullus subtriangular, expanded in lower corner, slightly convex on outer margin, densely setose; apex rounded. Juxta jar-shaped, widest at middle, then narrowed distally, concave on caudal margin, slightly produced in triangular latero-caudally; median vertical ridge weakly developed; triangularly protruded at middle on anterior margin. Aedeagus slender, nearly parallel-sided, slightly shorter than valva.

Female unknown.

Distribution. Uganda (Mpigi).

Etymology. This species name is derived from the Greek, dis (= double) and zoster (= belt), referring to the two transversal stripes in distal part of forewing.


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