Pollex (Bilobiana) spina, Fibiger, 2007

Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, Zootaxa 1567 (1), pp. 1-116 : 71-72

Pollex (Bilobiana) spina Fibiger, new species

( Plate 9 , figure 2; male genit. plate 19, figure 2)

Material examined.

Holotype: male, Indonesia, Bali S, Sanur , 20 m, 6.i.2004, leg. U. Buchsbaum, genit. prep. 4645 M. Fibiger. Coll. M. Fibiger, to be deposited in ZMUC.

Diagnosis.

Wingspan: 10–11 mm.

Transverse lines: brown, suffused with black scales; terminal line marked by black dots between veins. Reniform: distinct, whitish grey, very small, outlined by black.

Fringes: coloured like subterminal area.

Hindwing: unicolorous grey brown with an indistinct black discal spot.

Underside: unicolorous grey brown.

Male genitalia. Tegumen: narrow.

Vinculum: short, stout.

Saccus: U-shaped, short.

Fultura superior: U-shaped, broad, arms narrow, fused with upper middle part of tegumen and ventrally with juxta-anellus on dorsal side; a very small, ventrally directed process on right arm.

Valve: shorter than wide.

Ampulla: almost symmetrical; long, curved, relatively narrow, densely setose with long, hair-like, inwardly bent setae; right ampulla slightly broader than left one.

Pollex : prominently asymmetrical; right pollex transformed into a huge, upwardly directed, pointed spine; left pollex similar, but much shorter.

Digitus: almost symmetrical; long, tapered, curved, directed slightly ventrally, apically pointed.

Juxta-anellus plate: large, higher than wide, hole for phallus positioned dorsally on left side of plate.

Phallus: long, smoothly curved, slightly tapered towards apex; broadest by ductus ejaculatorius; coecum long and apically rounded.

Vesica: with a very small cornutus.

Differential diagnosis.

P. spina differs from P. paraspina and P. falx by the small ventral process of the fultura superior, the long, spine-like right pollex, and the shorter, pointed left pollex, and the very small cornutus.

Figures

PLATE 9. Figures 1–8. Pollex subgenus Bilobiana species, adults. 1, P.(B.) falx, male holotype, Indonesia, Sulawesi N, Dumoga Bone National Park; 2, P. (B.) spina, male holotype, Indonesia, Bali S, Sanur; 3, P. (B.) sansdigit, male holotype, Philippines, Mindanao, Mt. Apo; 4, P. (B.) paraspina, male holotype, Indonesia, Sulawesi S, Bantimurung; 5, P. (B.) diabolo, male holotype, Philippines, Palawan, Mt. St Paul; 6, P. (B.) spastica, male holotype, Philippines, Panay, Antiquo; 7, 8, P.(B.) mindanaoi, female holotype, Philippines, Mindanao, Sapamoro and the same, unspread.