Eteoryctis minimus Kim & Byun 2022, sp. nov.
Creators: name: Kim, Da-Som
name: Byun, Bong-Kyu
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Gracillariidae
Eteoryctis
Eteoryctis minimus

description: Eteoryctis minimus sp. nov.
(Figs. 1, 4)
urn:lsid:zoobank.org:act: 7E313A23-7487-4099-AF49-55F0DD907DD0
Type material. Holotype. [KOREA] ♂, Mt. Seolag, GW, 8 viii 1977 (leg. H Kuroko), gen. slide no. HNUSEL- 5368 -coll. HNU.
Diagnosis. This species is similar to the congeneric species of the genus Eteoryctis, but it can be distinguished by the rather small sized adults with a wingspan of 6.0 mm; valva of male genitalia slightly reduced with half the width of E. deversa apically, and apical rounded; tegumen more stout than other members of the genus with sparse long setae laterally.
Description. Adult (Fig. 1). Wingspan 6.0 mm.
Head covered with silvery white slender scales, smooth on vertex and erected on occiput; frons also white; maxillary palpus minute, rough-scaled and white with a tiny pale gray spot on apical part or the spot absent; labial palpus white with a bit of ochreous at median part laterally; antenna ochreous dorsally and white ventrally; scape darker than the rest of flagellomeres dorsally and white ventrally. Thorax white with pale ochreous color. Tegula milky ochreous, slightly darker than forewing ground color; legs white; fore coxa entirely white; fore femur with ochreous shading dorsally; fore tibia dark ochreous on dorsal margin; fore tarsus with four ochreous rings, first and second ring almost adjoined; middle femur with ochreous spot at median to apical part dorsally; middle tibia with a small ochreous spot at lateral median part and a fuscous ring on subapical part; middle tarsus with four fuscous rings, first and second rings with small intervals and the rest at same intervals; hind femur and tibia white with a tiny ochreous scales; hind tarsus with four ochreous rings, the second tarsomere is the broadest, ca. 2 times broader than other tarsomeres in width; apex of tarsus ochreous ventrally.
Forewing lighter in coloration, ground color pale ochreous; a white longitudinal streak stretches from base to 5/6 of forewing along termen, and meets dorsal margin and bents loosely to apex of forewing; a white stria on costal margin near apex is present, it is not edged with black scales; it stretches outward and meets at median part with white disc of apex; a white disc area on apex with a black spot centrally; cilia ochreous and white on tornus. Hindwing silvery gray with long cilia.
Male genitalia (Fig. 4). Tegumen broad at base, as long as valva, a pair of setose area on lateral sides, but more sparse than in E. deversa. Valva slightly reduced compared with other species of the genus; apex rounded; costal and ventral sides are parallel at base to median part; valva slightly swollen at apical part. long and slender setae densely cover apical part continuing to basal part except for costal area; basal setae sparse and long. Vinculum membranous; saccus narrow and short. Aedeagus narrow, tubular-like, approximately as long valva, vesica without cornuti only with zigzag wrinkles initiating at apex and continuing to 1/3 of aedeagus.
Female genitalia. Unknown.
Etymology. The specific name is derived from the Latin “ minimus ”, meaning ‘small’ and refers to small-sized adult.
Distribution. Korea (endemic).
Host plants. Larva of the new species feeds on Rhus japonica L. [Anacardiaceae] in Korea.
description: Published as part of Kim, Da-Som & Byun, Bong-Kyu, 2022, Genus Eteoryctis Kumata & Kuroko, 1988 (Lepidoptera: Gracillariidae) in Korea with description of a new species, pp. 402-408 in Zootaxa 5120 (3) on pages 403-404, DOI: 10.11646/zootaxa.5120.3.6, http://zenodo.org/record/6389541