Fustis sensora Fibiger

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119: 46-47

publication ID

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

persistent identifier


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scientific name

Fustis sensora Fibiger

new species

Fustis sensora Fibiger   , new species

( Plate 6, figure 1; male genit. plate 15, figure 3)

1986-74, genit. prep. 3194 M. Fibiger, coll. BMNH.

Diagnosis. Imago (external). Wingspan: 12 mm.

Head, patagia, anterior part of tegulae, prothorax, basal part of costa, triangular patch of medial area, and terminal area, including fringes: black.

Forewing ground colour: beige suffused with light brown scales.

Abdomen: dark grey; with dorsal tuft on basal segment.

Crosslines: untraceable, except weak antemedial line and terminal line marked by black interneural dots.

Reniform stigma: beige, ovoid, black outlined.

Hindwing: beige; with narrow brown terminal line; fringes white basally, otherwise beige.

Underside: forewing grey brown, hindwing grey.

Male genitalia. Tegumen: long, laterally narrow, dorso-laterally broad, platelike.

Vinculum: two branched; centre one barlike; posterior one branchlike, not curved.

Saccus: short; broadly V shaped.

Valvae: asymmetrical; subapically with prominent, triangular, broad-based process (apo.).

Ampulla: slightly asymmetrical; similar to head of ‘Snoopy’ (cartoon dog); tapered towards dorsal tip (apo.).

Digitus: small, triangular, apically setose.

Anellus plate: prominently asymmetrical; with very long, free, medially curved, heavily sclerotised clublike structure; head of club clothed with stout setae (apo.).

Juxta: trapezoid, with medial cleft on dorsal side.

Phallus: coecum short and very broad; broadest by ductus ejaculatorius; smoothly and upwards strongly curved 80 o to pointed tip (apo.).

Vesica: unarmed.

Differential diagnosis. F. sensora   differs from other Fustis species   in:

- narrow wings, with pointed apex;

- beige-brown ground colour, with contrasting wing pattern;

male genitalia, in

- shape of ampulla, ventral broad, rounded end, and dorsal pointed arm;

- very large, medially curved, brushlike anellus; and

- long, curved, tapered phallus.

Distribution. F. sensora   known only from N. Thailand, Chiang Mai.