Obscura clarus Fibiger

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 69-70

Obscura clarus Fibiger , new species

( Plate 8 , figure 5; female genit. plate 24, figure 8)

19–23.ii.2002, leg. & genit. prep. 4532 M. Fibiger, coll. MF , later to be deposited in ZMUC.

Diagnosis. Imago (external). Wingspan: 9.5 mm.

Head, patagia, anterior part of tegulae, prothorax, basal part of costa, costal part of medial area: blackish brown, costal medial-area quadrangular.

Forewing ground colour: light brown, fringes grey.

Crosslines: all lines indistinct.

Terminal line: well marked by black interneural dots.

Reniform stigma: beige, diffusely outlined.

Hindwing: grey, discal spot absent.

Underside: forewing brown; hindwing grey, with discal spot.

Male genitalia. Unknown.

Female genitalia. Ovipositor: short, smoothly rounded posteriorly and at corners.

Posterior apophyses: 1.5 times length of ovipositor.

Membrane close to 9 th –10 segment: ventrally wrinkled by sclerotised streaks (apo.).

Anterior apophyses: untraceable.

7 th and 8 th abdominal segment: strongly fused throughout.

Ostium: ringlike; slightly displaced to left.

Antrum: 1.5 times longer than width of ostium.

Ductus bursae: membranous, very narrow, 3 times length of corpus bursae.

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross shaped.

Differential diagnosis. O. clarus differs from other Obscura species in:

- forewing with light brown ground colour;

- grey fringes;

- small reniform stigma, diffusely outlined;

female genitalia, in

- wide ostium;

- wrinkled, sclerotised bands close to 9 th –10 segment;

- very narrow ductus bursae.

Distribution. O. clarus known only from Indonesia, West Sumatra.

Figures

PLATE 8. Figures 1–8. Clarior and Obscura species, adults. 1, Tantulius belli, female holotype, abdomen lost, India S, Kawar; 2. Asylemissa comma, male holotype, NE Thailand, Chaiyapumh Distr.; 3, Clarior kitchingi, male holotype, Thailand N, Dot Phu Kha Nat. P.; 4, Obscura lateraprocessa, female holotype, Indonesia, N. Sumatra; 5, O. clarus, male holotype, Indonesia, West Sumatra; 6, O. niasiensis, male holotype, Indonesia, S Nias Isl.; 7, O. fragilis, female holotype, Thailand NW, Mae Hong Son; 8, O. davisi, male paratype, Sri Lanka, District, Chundikkulam Sanct.