Loboschiza bisulca Anan and Pinkaew

Anan, Surachet, Dokchan, Paradorn & Pinkaew, Nantasak, 2016, Loboschiza Diakonoff (Lepidoptera: Tortricidae) from Thailand with descriptions of four new species, Zootaxa 4109 (1), pp. 81-88 : 85-87

Loboschiza bisulca Anan and Pinkaew , n. sp.

Figs. 5, 6 , 11 , 16

Diagnosis. The male genitalia of this species differs from those of other species of Loboschiza by a subtriangular, ventral cucullus lobe with a bifurcate thorn, and a phallus with a downwardly bent, dorsoapical, bifid, finger-like projection.

Description. Head: Upper frons yellowish orange, lower frons light yellow, vertex light orange mixed with light brown; labial palpus porrect, first segment yellowish orange, second segment distally strongly widened, yellowish orange, slightly darker to orange distally, with small blackish spots dorsomedially, third segment small, yellowish orange. Antenna extending to middle of forewing, dark brown, dorsally with narrow band of yellowish orange scales.

Thorax: Pronotal collar, tegulae and mesonotum light brown mixed with orange; hindlegs with tibia modified in male, with dorsobasally, yellowish white tibial pencil. Forewing broad, subtriangular, length 4.0– 4.2 mm in male (n = 4) ( Fig. 5 ), 4.1–4.2 mm in female (n = 3) ( Fig. 6 ), termen slightly oblique, costal margin with well developed, small blackish striae, two-toned wing pattern with basal 3/5 with broad orange bands on light brown ground, distal portion with blackish ground color with wide orange sinuous scribbles, separated from rest of wing by a transverse leaden band. Underside greyish brown, with white spots along costa. Hindwing narrow, subcrescentic, brown, paler towards base especially in male. Underside light brown, paler medially.

Abdomen: Male genitalia ( Fig. 11 ) with tegumen subtriangular, moderately sclerotized, laterally with moderately dense scale sockets, lateroapically with dense scale sockets on anterior surface; uncus absent; socii membranous, rather small, distally free, pendulous bristled lobes; gnathos two moderately sclerotized lateral arms, arising from near middle of tegumen; vinculum moderately sclerotized; juxta moderately large; caulis moderately long; phallus moderately long, slightly downcurved at base but otherwise straight, wide at base and slightly narrowing to downwardly bent, bifid, finger-like apical processes, with dense cornuti; valva moderately sclerotized, deeply bilobed; sacculus hardly projecting, densely setose; cucullus bilobed, densely setose, dorsal lobe elongate-ovate, ventral lobe subtriangular with a large bipronged thorn at apex. Female genitalia ( Fig. 16 ) with papillae anales wide with dense setae. Tergum VIII smooth except for lateral triangular extensions with dense microtrichia; sternum VII moderately sclerotized, with moderately dense scale sockets, denser along concave, curved posterior margin; ostium beyond posterior margin of sternum VII, sterigma a moderately wide U-shaped ridge, with dense microtrichia; colliculum just below ostium, an irregular broad ring, wider anteriorly, moderately sclerotized; ductus bursae shorter than corpus bursae, strongly widened in anterior half, with small sclerite in middle near origin of ductus seminalis; corpus bursae with two small, depressed scobination signa.

Holotype. ♂, Thailand, Nakhon Nayok Prov., Khao Yai N.P., 14°21'49"N, 101°24'37"E, ca. 1140 m, 20 Jan 2010, N. Pinkaew, np 3337, ♂genitalia slide NP 2586. Deposited in KKIC.

Paratypes. 3♂, 3♀, Thailand, Nakhon Nayok Prov., Khao Yai N.P., 14°21'49"N, 101°24'37"E, ca. 1140 m, 20 Jan 2010, N. Pinkaew, np 3340, ♂ genitalia slide NP 2587, N. Pinkaew, np 3325, N. Pinkaew, np 3334, ♀ genitalia slide NP 2590, N. Pinkaew, np 3343, 10 Sep 2010, N. Pinkaew, np 4718, ♀ genitalia slide NP 2589. Deposited in KKIC and THNHM.

Etymology. The specific epithet bisulca refers to the bifid apex of the phallus.

Distribution. Central Thailand.

Figures

FIGURES 1 – 8. Adults of Loboschiza spp. (scale bars = 2 mm). 1. L. koenigiana (male), Nakhon Pathom. 2. L. koenigiana (female), Nakhon Pathom. 3. L. spiniforma, n. sp. (holotype male), Chanthaburi. 4. L. spiniforma, n. sp. (paratype female), Sa Kaeo. 5. L. bisulca, n. sp. (holotype male), Nakhon Nayok. 6. L. bisulca, n. sp. (paratype female), Nakhon Nayok. 7. L. subrectangula, n. sp. (holotype male), Nakhon Ratchasima. 8. L. lunata, n. sp. (holotype male), Nakhon Si Thammarat.

FIGURES 9 – 13. Male genitalia of Loboschiza spp. 9. L. koenigiana. 10. L. spiniforma, n. sp. (holotype). 11. L. bisulca, n. sp. (holotype). 12. L. subrectangula, n. sp. (holotype). 13. L. lunata, n. sp. (holotype).

FIGURES 14 – 16. Female genitalia of Loboschiza spp. 14. L. koenigiana. 15. L. spiniforma, n. sp. (paratype). 16. L. bisulca, n. sp. (paratype).