Vas owadai Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 40-41

Vas owadai Fibiger , new species

( Plate 5 , figure 3; female genit. plate 23, figure 7)

Material examined. Holotype: female, Thailand N, Chiang Mai Prov., Doi Inthanon, South Ridge , 1650 m, 18–21.x.1983, leg. M. Owada, genit. prep. 3282 M. Fibiger, coll. NSMT.

Diagnosis. Imago (external). Wingspan: 11 mm.

Head, patagia, tegulae, thorax, and ground colour of forewing: brown; costal quadrangular patch 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: 1/5 length 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 vaselike, 1.5 times longer than wide; ventrally shorter (apo.).

Ductus bursae: membranous, very long and narrow; 3 times as long as corpus bursae (apo.).

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross-shaped, longitudinal bar shorter.

Differential diagnosis. V. owadai differs from V. proceus in smaller size, in male genitalia, in larger patch in costa-medial area, and in female genitalia in longer antrum and longer ductus bursae.

Distribution. V. owadai known only from type-locality in North Thailand.

Figures

PLATE 5. Figures 1–8. Dignus, Vas, Nilgerides, and Fustis species, adults. 1, Tumula flavicollis, female holotype, Thailand N, Fang; 2, D. buchsbaumi, female holotype, Indonesia, Lombok; 3, Vas owadai, female holotype, Thailand N, Chiang Mai; 4, V. proceus, female holotype, Vietnam N, Da Lat; 5, Nilgirdes trifasciata, female holotype, Indonesia, Sumatra; 6, Fustis sterlingi, male holotype, China, Hong Hong, and female paratype, with same data; 7, F. malaysiensis, male holotype, Malaysia W, Trengganu; 8, F. parasensora, male holotype, Laos S, Sayaboury.