Olethreutes palbongensis Kim & Bae, 2025

Kim, Jeong-Nam, Bayarsaikhan, Ulziijargal, Lee, Tak-Gi, Cha, Yeong-Bin, Kim, Hanul & Bae, Yang-Seop, 2025, A new species of Olethreutes Hübner, 1822 (Lepidoptera, Tortricidae, Olethreutinae) from Korea, with diagnosis of four allied species, Zootaxa 5590 (4), pp. 587-594 : 588-590

Olethreutes palbongensis Kim & Bae , sp. nov.

urn:lsid:zoobank.org:act:77E4C6E7-DCFE-4CAD-B0DD-72655C9C4F28

( Figs 1 , 6 , 11 )

Type material. Holotype. [ KOREA] ♂, Mt. Soyo , GG, 9 VI 1996 (Y. S. Bae), genitalia slide No. INU–11126 . Paratypes. [ KOREA] 3 ♀, Mt. Weolak , Danyang-Gun, CB, 7 VI 1997 (Y. S. Bae, M. G. Peak, H. K. Lee, G. S. Oh & N. H. Ahn), genitalia slide No. INU-11128, INU-11129, INU-11291 ; 2 ♂, 2 ♀, Mt. Palbong , GW, 8 VI 2004 (Y. S. Bae et al.), genitalia slide No. INU-11181, INU-11182, INU-11183, INU-11184 ; 1 ♀, 654-1, sang-o-ri, Hwabukmyeon , Sangju-si, GB, 24 V 2022 (Bae et al.), genitalia slide No. INU-11369 .

Diagnosis. Superficially, O. palbongensis sp. nov. Kim & Bae is very similar in appearance to the other four species: O. arcuella (Clerck) , O. captiosana (Falkovitsh) , O. oculata Kim, Byun & Bae and O. subtilana (Falkovitsh) , but it can be distinguished by its genitalia. In the male genitalia, the new species has a narrow uncus and a folded line of stout spines at the base of the cucullus. In the female genitalia, the sterigma has two thick, curved lines and the ostium is characterized the rounded plates projecting from both sides.

Description. Adult ( Fig. 1 ). Head: Frons ivory; vertex ivory mixed with dark brown scales. Antenna filiform, covered with dark brown scales. Ocellus present. Labial palpus weakly upcurved, covered by pale ivory scales, apical segment shortly exposed and erect, mixed with dark brown scales.

Thorax: Patagium with dark orange mixed orange scales; tegula grayish orange mixed with grayish ivory scales. Wingspan 11–14 mm in both sexes. Ground color of forewing pale brownish orange, elongate–subtriangular, costa slightly curved outwards; termen convexly rounded; basal area with three metallic silver longitudinal streaks, first streak near of costa; second streak straight; subbasal fascia straight metallic silver cross line; the median reticulated area with four eye-like metallic silver markings in center of dark ovoid plate and pale ivory back plate, consisting of irregular dots and lines; preterminal fascia with two metallic silver bands extending slightly inward, upper band shorter than lower one and one short metallic silver band near tornus; cilia ivory and dark brown. Hindwing elongate–ovate, apex rather acute; dark brown, darker apical area; cilia pale ivory and dark brown.

Male genitalia ( Fig. 6 ). Basal part of uncus narrowed, hooked, bifurcated at apex. Socius moderate and dropping. Gnathos partly sclerotized. Tuba analis membranous. Tegumen long–trapezoidal, narrower than cucullus, valva elongated, sacculus almost as wide as cucullus, cucullus densely stose, foled between cucullus and sacculus. Phallus narrower than valva, partly membranous, without cornutus.

Female genitalia ( Fig. 11 ). Papillae anales broad, elongate ovoid with setae. Apophyses posteriores almost same length of apophyses anteriores. Sterigma with two thick curved lines splitting its base. Ostium round with plates projecting laterally. Colliculim sclerotized. Ductus bursae rather shorter than corpus bursae. Corpus bursae ovate, membranous, signum not well expressed.

Distribution. Korea (CB, GB, GG, GW).

Host plant. Unknown.

Etymology. This specific name is derived from the name of “Mt. Palbong”.

Figures

FIGURES 1–5. Adults of Olethreutes. 1a, O. palbongensis sp. nov., male, holotype (INU-11126); 1b, ditto, female, paratype (INU-11369); 2a, O. arcuella, male (MGCL-1174104); 2b, ditto, female (MGCL-1174105); 3a, O. captiosana, male (INU- 11054); 3b. ditto, female (INU-11220); 4, O. oculata, male (INU-11284); 5, O. subtilana, male (INU-11290).

FIGURES 6–10. Male genitalia (phallus) of Olethreutes. 6, O. palbongensis sp. nov., male, holotype (INU-11126); 6a, magnification of aedeagus; 7, O. arcuella, male (MGCL-1174104); 7a, magnification of aedeagus; 8, O. captiosana, male (INU-11054); 8a, magnification of aedeagus; 9, O. oculata, male (INU-11284); 9a, magnification of aedeagus; 10, O. subtilana, male (INU-11290); 10a, magnification of aedeagus.

FIGURES 11–13. Female genitalia of Olethreutes. 11, O. palbongensis sp. nov., female, paratype (INU–11369); 12, O. arcuella, female (MGCL–1174105); 13, O. captiosana, female (INU–11219).