Loboschiza cambodiensis Heppner & Bae

Heppner, John B. & Bae, Yang-Seop, 2016, Two new species of Loboschiza from Cambodia and Vietnam (Lepidoptera: Tortricidae: Olethreutinae: Enarmoniini), Zootaxa 4169 (1), pp. 171-178 : 171-174

Loboschiza cambodiensis Heppner & Bae , new species

( Figs. 1–8 )

Type locality. Kep, Kep Province, Cambodia.

Diagnosis. The species has a distinctive forewing pattern of dark burnt orange with irregular rosy lines on the outer one-third, and a yellow-orange head. In L. koenigiana the forewings are dull yellow with bright orange markings, whereas the distal portion has much redder irregular lines. The male genitalia of L. cambodiensis are very similar to those of L. koenigiana , but in L. cambodiensis the cucullus is more rounded distally and the valva has the ventral invagination more concave. The genital sternal plate is elongated in L. cambodiensis , whereas in L. koenigiana it is much wider, and in L. flavobasis it is more triangular. The most distinctive feature, however, that separates these similar species is on the abdomen, where there are lateral coremata on sternite 2 in L. cambodiensis , with adjacent elongated patches of sharp spines between sternites 2 and 3 ventrally ( Fig. 7 c).

Description. Male ( Fig. 1 ). Head ( Fig. 3–4 ): Vertex yellow; frons light yellow, lightening to white near palpi; labial palpus yellow, with pale brown area on apical segment, light yellow mesally; antenna dark brown with a few yellow scales on basal 1/2. Thorax: Dorsum dark brown, with tegulae somewhat lighter and patagia orange-yellow; venter tan-white; legs with coxae and femura tan-white; tibiae gray-tan, but hindtibia mixed with isolated white scales; tarsal segments dark brown, ringed yellow-tan at segmental margins, but hindtarsi light tan. Wingspan 11.3– 11.6 mm (n = 3); forewing with basal 2/3 dark orange-brown with indistinct irregular lighter strigulae, distal 1/3 black-brown with rosy irregular vertical striae from costa to tornus; fringe dark brown; venter tan-gray, with dorsal markings repeated but dull gray-brown, costal margin dull gray-brown, strigulae edged with light tan. Hindwing dark brown with pale tan patch along basal 1/2 of cubital vein; fringe dark brown, but pale tan along anal margin; venter brown-gray, with tan-gray costal margin. Abdomen: Dark brown, with posterior margins of tergites paler; venter tan; genital tufts tan, dark orange-brown dorsally; sternal pregenital plate elongate-triangular with extended posterior point; anterior of abdomen with specialized fan-shaped bunch of very long slender spines, and coremata on lateral sternite 2 margin with intersegmental linear patch of short spines. Male genitalia ( Fig. 7 ) with tegumen rounded dorsally with overall triangular form; uncus absent; socius as setose lateral region; vinculum triangular with short, somewhat truncated and rounded saccus; valva elongated and upright, with setose patch on sacculus at dorsal area of cucullus where bulged dorsally, and with extended thin arm with small apical hook ventrally and distally past concave invagination on distal 1/3 of valva; juxta a small V-shaped plate; anellus an elongated dorsally open, straight tube; aedeagus short, slightly bent, with patch of ca. 50–60 deciduous lanceolate cornuti (in Fig. 7 A most of cornuti lost).

Female ( Fig. 2 ). Head and Thorax: Essentially as in male, but hindwing cubital pale patch larger and orange along anal margin. Abdomen: Female genitalia ( Fig. 8 ) with ovipositor short, with large setose papillae anales; apodemes nearly subequal but posterior pair somewhat shorter than posterior pair; sterigma a short bulbous funnel, with rounded ostium ending at abrupt edge of smaller ductus bursae which is narrowed as a colliculum before the remaining heavily sclerotized section to entrance of the ductus seminalis, but with elongated and thin sclerotized extension which twists around ductus to entrance of the bursa; corpus bursa ovate, heavily scobinate; signum absent but with a small dimple-like invagination ventro-posteriorly before junction with ductus bursae.

Specimens studied. Holotype ♂, Cambodia, Kep Province, Kep, 13 Jan 2013, Y.- S. Bae, Y.- D. Ju, B.- S. Park, & H.- J. Lee (genitalia slide JBH 3371) ( INUC).

Paratypes (1♂, 1♀). Cambodia: same data as holotype (1♂) ( MGCL) . Seima [Forest Reserve], Mondulkiri Province, 30 Jun 2011 (1♀), Y.- S. Bae, X.- V. Le, B.- S. Park, M.- S. Kim, & K.- W. Kim (genitalia slide JBH 3372) ( INUC) .

Etymology. The specific epithet refers to the country of Cambodia.

Biology. Unknown.

Distribution. Known only from southeastern and eastern Cambodia.

Discussion. The genitalia of the new species are similar to those of L. koenigiana , but with a few distinctive features as noted above. The abdomen of the male is particularly diagnostic owing to the lateral coremata; the ventro-anterior fan of slender, elongated spines are lacking in specimens of L. koenigiana from Southeast Asia. Australian species identified as L. koenigiana by Horak (2006) also have this fan-shaped spine cluster, so the distribution of this feature requires further study. The forewing maculation of L. cambodiensis is quite different from that of L. koenigiana , but it is similar to some Loboschiza species in Australia. However, the genitalia of L. cambodiensis are quite different from superficially similar species. The female of L. cambodiensis lacks a signum, as do most Loboschiza species, but has the typical scobinate invagination near the ductus bursae.

Figures

FIGURE 7. Loboschiza cambodiensis n. sp., male genitalia. a) aedeagus; b) central area of genitalia; c) anterior of abdomen (ventral view); and d) pregenital sternal plate (genitalia slide JBH 3371).

FIGURE 8. Loboschiza cambodiensis n. sp., female genitalia. a) sterigma and ostium; and b) lower ductus bursae and bursal depression-type signum (in upper folds) (genitalia slide JBH 3372).

FIGURES 1 – 2. Loboschiza cambodiensis n. sp. 1. male holotype (11.3 mm wingspan); 2. female paratype (11.6 mm wingspan), Cambodia.

FIGURES 3 – 6. Loboschiza cambodiensis n. sp., head close-up (lateral and dorsal views): 3 – 4) male; 5 – 6) female.