Nilgerides trifasciata Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 42-43

Nilgerides trifasciata Fibiger , new species

( Plate 5 , figure 5; female genit. plate 24, figure 1)

Material examined. Holotype: female, Indonesia, Sumatra, Sitahoan , 2– 3.1.1982, leg. E. Diehl, coll. & genit. prep. 4648 M. Fibiger, coll. ZSM.

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

Labial palps: porrect; second segment dark brown outside, brown inside, roughly scaled vertically; third segment ½.as long as second, narrow, cylindrical (apo.).

Head, patagia, tegulae, thorax, and ground colour of forewing: blackish brown; basal, medial, and terminal areas of wing dark blackish brown; subterminal area and fringes slightly lighter brown (apo.).

Abdomen: dark brown, with dorsal tuft on basal segment.

Crosslines: generally indistinct; antemedial and postmedial line brown, suffused with black scales (apo.).

Terminal line: marked by black interneural dots.

Reniform stigma: indistinct, indicated by a small, narrow, white bar at postmedial line (apo.).

Hindwing: light grey; discal spot abesent.

Underside: forewing grey, suffused with dark scales; hindwing light grey; discal spot of hindwing absent.

Female genitalia. Ovipositor: quadrangular, with rounded corners; a small round membranous window apically to broad base of posterior apophyses (apo).

Posterior apophyses: 1.5 times longer than ovipositor.

Anterior apophyses: untraceable.

7 th and 8 th abdominal segment: fused throughout, junction between them untraceable; narrow ventrally, gradually broader dorsally to 5 times broader (apo.).

Ostium: membranous; displaced slightly to left; positioned at anterior end of 7 th segment.

Ductus bursae: membranous, long and narrow; 2.5 times as long as corpus bursae.

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross shaped; longitudinal bar short, platelike.

Distribution. N. trifasciata known only from type-locality, Indonesia, Sumatra.

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.