Vas Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 40

Genus Vas Fibiger , new genus

Type-species: Vas owadai Fibiger , new species.

Taxonomic notes. The genus Vas contains two known species. The genitalia indicate a closer relationship to the following genera than to the previous ones.

Diagnosis. Imago (external). Wingspan: 10 mm.

Labial palps: porrect; second segment brown outside, beige inside; gradually more roughly scaled distally; third segment 1/4 of second, narrow, beige, tufted (apo.).

Head, patagia, tegulae, thorax, and ground colour of forewing: brown; narrow costal part of medial area and terminal area dark brown (apo.).

Forewing: long and narrow, with pointed apex.

Abdomen: grey, with dorsal tuft on basal segment.

Crosslines: all present, though indistinctly marked; terminal line marked by black interneural dots.

Reniform stigma: small, whitish, outlined by dark brown.

Hindwing: light grey, with indistinct discal spot.

Underside: forewing brown grey, hindwing light grey, discal spot of hindwing present.

Female genitalia. Ovipositor: quadrangular, with rounded corners.

Posterior apophyses: slightly longer than ovipositor.

Anterior apophyses: length 1/5 of posterior apophyses.

7 th abdominal segment: half as long as wide; shortest ventrally.

8 th abdominal segment: ventrally free, with postvaginal, conelike plate.

Ostium: displaced slightly to left, large.

Antrum: broadly vase-shaped, 1.5 times longer than wide; ventrally shorter (apo.).

Ductus bursae: membranous, very long and narrow, 3–4 times longer than corpus bursae.

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross-shaped, longitudinal bar shorter.

Distribution. Genus Vas known from N Thailand and N Vietnam.