Obscura Fibiger

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119: 67-68

publication ID

http://doi.org/ 10.11646/zootaxa.2583.1.1

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scientific name

Obscura Fibiger

new genus

Genus Obscura Fibiger   , new genus

Type-species: Obscura davisi Fibiger   , new species.

relationship to the previous genus, Clarior   . The genus is the type-genus of Obscurini   and is characterised by several unique features.

Diagnosis. Imago (external). Wingspan: 7–12 mm (including fringes); type-species 7 mm.

Labial palps: porrect; second segment brown outside, beige inside, roughly scaled vertically; third segment 1/3 of second, narrow, cylindrical; basal 2/3 brown, outwards beige.

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

Forewing ground colour: grey (type-species) or grey brown or light brown, suffused with brown and black scales.

Abdomen: grey, with dorsal tuft on basal segment.

Crosslines: antemedial, postmedial, and subterminal line present, distinct (type-species) or indistinct; black or brown (type-species).

Terminal line: marked by black interneural dots.

Reniform stigma: yellow (type-species) or white.

Hindwing: grey, discal spot absent (type-species) or indistinct.

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

Male genitalia. Tegumen: relatively narrow throughout.

Vinculum: relatively stout, twice as broad as tegumen.

Saccus: tip long and narrow, V shaped.

Valvae: relatively narrow, slightly asymmetrical.

Clasper: barlike, slightly oblique to valva margins.

Ampulla: relatively small, slightly asymmetrical, semi-globular, apically smoothly rounded (apo.).

Juxta: slightly wider than long, platelike.

Phallus: almost straight, slightly curved, broadest by ductus ejaculatorius.

Vesica: with sclerites.

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

Posterior apophyses: as long as ovipositor.

Anterior apophyses: slightly longer than posterior apophyses (type-species).

7 th and 8 th abdominal segment: fused throughout.

Ostium: narrow (type-species), slightly displaced to left.

Antrum: cylindrical; twice as long as posterior apophyses (apo.).

Ductus bursae: membranous and narrow, 1.5 times length of corpus bursae (apo.).

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross shaped.

Differential diagnosis.

- small and medium size;

in female genitalia, in

- corpus bursae semi-globular, relatively small;

- antrum cylindrical;

- ductus bursae narrow and long.

Distribution. Species of Obscura   are known from a large disjunct area, N Thailand, Indonesia (Sumatra), and Sri Lanka.