Anarsia diversiola Park

Bae, Yang-Seop, Shin, Young-Min, Na, Sol-Moon & Park, Kyu-Tek, 2016, The genus Anarsia in Cambodia and the Northern Vietnam (Lepidoptera, Gelechiidae), with descriptions of ten new species and a catalogue of the genus in the Central-East Asia, Zootaxa 4061 (3), pp. 227-252: 232-233

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Anarsia diversiola Park

sp. nov.

7. Anarsia diversiola Park   , sp. nov.

( Figs. 7, 21 View FIGURES 1 – 21 , 28 View FIGURES 22 – 40 , 47 View FIGURES 44 – 47 a , 47 a, 61)

Holotype: ♂, VIETNAM, Bac Khan Prov., Ba Be Nat. Park, 26–28 vii 2006 (Park, Chae, Cuong), gen slide no. CIS- 6457. Paratypes: 10 ♂, 1 ♀, same data as the holotype, gen slide no. CIS- 6458 (♀); 1 ♂, VIETNAM, Nhin Binh Prov., Cuc Phuong Nat. Park, 300m, 2 v 2005 (KT Park & SR Kim), gen. slide no. CIS- 6407.

Diagnosis. This new species is very similar to A. patulella Walker   in superficial characters, but it can be distinguished by the weakly developed brownish costal patch and the discal streak in discal cell, with a long hair pencil on underside of forewing basally, and the hindwing with broad anterior expansion extended to beyond middle, then abruptly truncate, whereas it is gradually oblique to 2 / 5 of costa in the latter. The male genitalia are hardly distinguishable from those of A. tortuosa (Meyrick)   which is known in Sri Lanka and Japan (Ryukyus), but can be distinguished by the slender, long uncus; basal process on the left valva strongly curved before middle, then nearly straight distally; and the abdominal sternite VIII rounded, not tapered caudally and without deep concave as in A. tortuosa   . The male genitalia also resemble those of A. reciproca Meyrick, 1920   described from South India, but it is easily distinguished by the broad tegumen of the latter.

Description. Adult: Male ( Figs. 7 View FIGURES 1 – 21 , 28 View FIGURES 22 – 40 ). Wingspan, 10.5 mm. Head grayish white, speckled with pale grayish orange scales dorsally. Antenna about 3 / 4 the length of forewing; flagellum with brownish annulations. Second segment of labial palpus in male ( Fig. 28 View FIGURES 22 – 40 ) subtriangular, with long scale tuft antero-ventrally; apex truncate, slightly longer than width of head, densely covered with dark brown scales on outer surface, except pale grayish white along upper 1 / 3; creamy to orange white on inner surface, same in color with dorsal surface of head, with blackish scales along anterior margin. Thorax same in color with head. Forewing elongate; ground color pale grayish white, brownish scales scattered irregularly; costa slightly convex before 2 / 5, then oblique beyond 3 / 4; costal patch large, trapezoidal, dark brown near middle; markings similar to those of the following new species, A. porthmista   sp. nov.; pterostigma extended from base to end of R 1; cell elongated to 2 / 3 length of wing; venation with R 1 arising from near middle; distance between R 1 -R 2 at base about 1.5 times that of R 2 -R 3; R 3 near upper corner of cell; R 4 and R 5 stalked before middle; R 5 to costa; M 1 stalked with R 4 +R 5; M 2 and M 3 nearly parallel; CuA 1 free, arising from before lower corner of cell; distance CuA 2 -CuA 1 at base longer than twice that of M 3 -CuA 1; apex more or less acute; termen oblique; fringe concolorous with ground color of wing. Hindwing grayish, anterior expansion on costa extended to 3 / 5, abruptly truncated, then straight to apex; apex narrowly protruded; venation ( Fig. 21 View FIGURES 1 – 21 ) with Rs running close to costa; Rs and M 1 stalked; M 2 far from M 3 basally, M 3 and CuA 1 connate.

Male genitalia ( Figs. 47, 47 View FIGURES 44 – 47 a a): Abdominal sternite VIII rounded on caudal margin. Uncus slender, with triangularly expanded apical part, exceeding apices of Socius; Socius slender in basal half, then dropped anteriorly, with roundly expanded distal portion. Tegumen + uncus as long as valva. Left valva broad basally, semiovate, narrowed towards apex, with a small triangular membranous flap near 2 / 3; sclerotized basal process slender, strongly curved at basal 1 / 3; zone of palmately modified scales small in distal end. Right valva narrower than left one, with a larger triangular membranous flap near 2 / 3, patch of palmately modified scales similar to that of left valva. Phallus as long as 3 / 5 of left valva, strongly bent at basal 1 / 4, then tapered.

Female genitalia ( Fig. 61 View FIGURES 60 – 66 ). Apophyses posteriores about 1.5 times of papillae anales in length. Ostium funnelshaped, with concave caudal margin, sclerotized. Ductus bursae broad, smoothly connected with corpus bursae, without conjunction, longer than corpus bursae; corpus bursae ovate; signum forming a long plate, about 2 / 3 the length of corpus bursae.

Distribution. Vietnam (Bac Khan Prov., Nhin Binh Prov.).

Etymology. The species name is derived from the Latin, diversi (= various) with the Greek diminutive suffix, ola denoting resemblance.