Atteva chalco Bae & Na, 2024

Na, Sol-Moon & Bae, Yang-Seop, 2024, First report of the family Attevidae (Lepidoptera, Yponomeutoidea) from Cambodia, with description of a new species, Zootaxa 5496 (2), pp. 290-294 : 292-294

Atteva chalco Bae & Na sp. nov.

http://zoobank.org:act: B737F80B-C82A-4DEF-9BF8-32C6A12635BB

( Figs. 1C , 2B , 3C )

Type material. Holotype: [ INUB] ♀, Samkos (N12º12’48.1”, E102º54’12.5” Alt. 830 m), 6.II.2015 (Bae Y.S., Ju Y.D., Park B.S., Na S.M., Kim J.W., Lee D.J.) ; Paratypes: [ INUB] 2♀ , Samkos , Pursat Prov. (N12º12’26”, E102º52’27”), 20.II.2012 (Bae Y.S., Ju Y.D., Park B.S.), genitalia slide no. QNA-20 . ♂ ♀, same locality as holotype, genitalia slide no. QNA-23 . 2♂ 3♀, Samkos (N12º12’38.8”, E102º53’54.3” Alt. 934m), 8.II.2015 (Bae Y.S., Ju Y.D., Park B.S., Na S.M., Kim J.W., Lee D.J.), genitalia slide no. QNA-29 .

Diagnosis. The new species can be identified easily from above two newly recorded species by the unicolorous forewing feature. It has Atteva scolecias Meyrick, 1928 has orange unicolorous forewing character, but it can be separated into some white patches on patagium, tegula, and thorax in A. chalco sp. nov..

Description. Adult ( Fig. 1C ) Wingspan 23–25 mm. Vertex with black scales, frons with appressed white scales continuing to around compound eye. Antenna filiform, 3/5 length of the forewing, scape black and basal half white, flagellum dark brown, except first 4–5 flagellomeres white dorsally. Labial palpus slender, upcurved, pointed at tip, 1 st segment white, spotted with black scales, 2 nd segment black with posterior 1/4 white, 3 rd segment white, spotted black scales, black at tip. Patagium orange on basal half, white on distal half; tegula orange, with white marking outer-posteriorly; mesoscutum orange with two white speckles at 2/3 posteriorly, one white speckle at distal end. Foreleg with coxa white, femur fuscous on outer-margin, white on inner-margin, tibia fuscous with white spot at base, 1 st and 2 nd segments of tarsus fuscous with white spot near base, other segments fuscous; midleg with coxa and femur fuscous, mixed with black, tibia fuscous with white spot at base and middle, each segment of tarsus fuscous; hindleg fuscous. Forewing mainly bronze, outer margin and fringe orange. Hindwing and fringe orange. Abdomen orange dorsally and white band distal end of each sternite.

Male genitalia ( Fig. 2B ): Uncus bifid, each lobe stout, over 5 times as long as socius; socius elliptical, with long hairs, sharply narrowed from apical 2/5; gnathal process sclerotized, stout at apex, over 1.7 times as long as saccus. Valva elliptical, costa emarginated at basal 1/3, convex from basal 2/3 to apex, about 2.25 times as long as socius; sacculus lobate. Saccus slender, narrowed to apex, about 0.7 time as long as valva. Aedeagus stout, slightly longer than valva; with cornuti composed of two rows of spinules in posterior half.

Female genitalia ( Fig. 3C ): Papilla analis bifid semioval with hairs. Apophysis anterioris as long as apophysis posterioris. Lamella postvaginalis shallow, setose, semielliptical lobes. Ostium rectangular. Ductus bursae about 2.6 times as long as corpus bursae; antrum at posterior 1/3, about 1/4 times as long as ductus bursae, slightly narrow to posterior. Corpus bursae ovate; signum narrow elliptical plate, with exterior denticules sparse near middle.

Distribution. Cambodia (Present study).

Host plant. Unknown.

Etymology. This specific epithet is derived from the Greek chalco meaning bronze color scales mainly covered on the forewing.

Figures

FIGURES 1. Adults of Atteva spp.: A. A. fabriciella Swederus; B. A. wallengreni Sohn & Wu; C. A. chalco Bae & Na sp. nov..

FIGURE 2. Male genitalia of Atteva spp.: A. A. wallengreni Sohn & Wu, genitalia slide no. QNA-30; B. A. chalco sp. nov. Bae & Na, genitalia slide no.QNA-28 (Paratype) (scale bar=1mm).

FIGURES 3. Female genitalia of Atteva spp.: A. A. fabriciella Swederus, genitalia slide no. QNA-32; B. A. wallengreni Sohn & Wu, genitalia slide no. QNA-33; C. A. chalco sp. nov., genitalia slide no. QNA-25 (Paratype) (scale bar=1mm).