Sorolopha suthepensis Patibhakyothin and Pinkaew

Patibhakyothin, Nathaphan, Pinkaew, Nantasak & Sukprakob, Nutchaya, 2015, Two new species of the genus Sorolopha Lower (Lepidoptera: Tortricidae) from northern Thailand, Zootaxa 3949 (1), pp. 135-141 : 136-139

Sorolopha suthepensis Patibhakyothin and Pinkaew , n. sp.

Figs. 3 , 5 , 7

Diagnosis. This species is most similar to S. asphaeropa in the shape of the asymmetrical valva and the cucullus, having 2–3 strong spines along the edge of the ventral process, but differs in having a less angled ventral margin of the left sacculus than S. asphaeropa , the right sacculus without strong spiniform setae towards valva neck as in S. asphaeropa , and with the dorsal lobe of the cucullus elongate rather than round.

Description. Head: Upper frons and vertex light brown, lower frons yellowish white to pale brown; antenna extending to middle of forewing, brown; labial palpi porrect, sinuate, long, first segment short, pale brown, second segment long, slightly expanded posteriorly, light brown, third segment stout, rather short, brown.

Thorax: Pronotal collar brown; thorax smooth, light brown with irregular, transverse, dark brown band medially, with light brown posterior scale tufts; tegulae brown but paler on posterior 1/3; legs unmodified. Forewing ( Fig. 3 ) subrectangular, length 7.2–7.3 mm in male; costa lightly and evenly curved except from more strongly curved apex, with well developed strigulae as small light brown streaks alternating with dark brown along costa; termen slightly oblique; ground color light brown mixed with greenish brown, with small, dark brown spots along dorsum, with an oblique band running from middle of costa to near tornus, dark brown mixed with greenish brown and with distinct, nearly straight apical margin edged with white scales nearly to costa, apical 1/3 of wing from R4 to tornus with greyish white ground color, with a large roundish subapical mark extending from between R4 and R5 to near CuA1 and from basal 1/3 of M1 to termen, dark brown, surrounded by oblique lines and short, longitudinal, greyish brown lines mixed with dark brown. Underside brown, costa with small blackish dots. Hindwing brown, paler towards base, with long, hairlike scales along 3A. Underside light brown except for yellowish brown area from costa to Sc+R1.

Abdomen: Sternum 8 ( Fig. 5 ) with expanded, folded membranous lobe, with tuft of long bristles on the margin of deep median excavation and on posterolateral corners. Male genitalia ( Fig. 7 ) with tegumen subtriangular, moderately sclerotized, with dense scale sockets laterally; uncus small, rounded; socii long, slender, slightly curved, pendant from base of uncus to middle length of tegumen, outer margin densely setose, denser at clavate apex; gnathos with two lateral, moderately sclerotized bands fused with sclerotized ventral surface of subscaphium; vinculum weakly sclerotized; juxta small, caulis moderately long; anellus surrounding base of phallus; phallus long, slender, evenly curved, roughly parallel-sided to apex, without cornuti; valvae asymmetrical, with large basal excavation; right sacculus with ventral margin weakly and evenly curved, left sacculus with ventral margin much more sharply curved, nearly rounded-rectangular; sacculus on both sides with group of moderately short setae basally, medially with long, moderately dense setae and a group of short spines; neck of the valva narrow, with ventral margin deeply sinuate; cucullus densely setose, bilobed, dorsal lobe elongate, gradually widening from narrow base to rounded apex, ventral lobe widest at base with rounded apex, with dense long spiniform setae and 2–3 curved spines along margin.

Holotype: ♂, Thailand, Khun Chang Khian R.St., 18°50'25"N, 98°53'53"E, 1,338 m, [Doi Suthep-Pui N.P.], Chiangmai Prov., N. Patibhakyothin, 25 Jul 2014, np6438, ♂ genitalia slide NP2279. Deposited in KKIC. Paratype: ♂, Thailand, Pha Dum N.P. Unit1, Doi Suthep-Pui N.P., 18°45'33"N, 98°53'28"E, 1,412 m, Chiangmai Prov., N. Patibhakyothin, 31 Mar 2014, np6326, ♂ genitalia slide NP2231. Deposited in KKIC. Etymology. The specific name suthepensis refers to the name of the type locality, Doi Suthep-Pui National Park.

Distribution. Northern Thailand.

Figures

FIGURES 3 – 4. Adults of Sorolopha spp. (scale bar = 2 mm). Fig. 3. Sorolopha suthepensis n. sp. (Holotype male, np 6438). Fig. 4. Sorolopha undula n. sp. (Holotype male, np 6437).

FIGURES 5 – 6. Abdomen of Sorolopha spp. Fig. 5. Sorolopha suthepensis n. sp. (Holotype, slide NP 2279), last segment. Fig. 6. Sorolopha undula n. sp. (Holotype, slide NP 2278), complete integument, arrows indicate scale sockets and sex scales.

FIGURES 7 – 8. Male genitalia of Sorolopha spp. Fig. 7. Sorolopha suthepensis n. sp. (Holotype, slide NP 2279). Fig. 8. Sorolopha undula n. sp. (Holotype, slide NP 2278).