Pollex (Bilobiana) angustiae, Fibiger, 2007

Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, Zootaxa 1567 (1), pp. 1-116 : 62

Pollex (Bilobiana) angustiae Fibiger, new species

( Plate 8 , figure1; male genit. plate 17, figure 6)

Material examined.

Holotype: male, Indonesia, Sumatra, Padang, Panjang , 29.viii.1981, leg. E. Diehl, genit. prep. 4650 M. Fibiger. Coll. MF, to be deposited in ZMUC.

Diagnosis.

Wingspan: 11 mm.

Forewing: narrow, light brown.

Transverse lines: antemedial line brown; postmedial and subterminal lines black; terminal line marked by black dots between veins.

Reniform: distinct, whitish grey, outlined by black.

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

Underside: unicolorous light brown.

Male genitalia.

Tegumen: narrow.

Vinculum: short, stout.

Saccus: U-shaped, short.

Fultura superior: T-shaped with asymmetrical length of arms, fused with upper middle pert of tegumen and ventrally with juxta-anellus; where three arms meet, a finger-like, ventrally directed, apically pointed, bent process arises.

Valve: shorter than wide.

Ampulla: almost symmetrical, long, stick-like; densely setose with long hair-like setae bent inwards. (The preparation illustrated is unfortunately broken medially on both sides).

Pollex : very long, narrow, equally broad throughout, right one a little broader; subapically densely setose with long, hair-like setae bent inwards.

Digitus: long, narrow, tapered, curved, directed ventrally, apically pointed.

Juxta-anellus plate: elongated, higher than wide.

Phallus: long, strongly curved, slightly tapered towards apex; coecum long and narrow.

Vesica: with a small, straight, spine-like cornutus.

Differential diagnosis.

P. angustiae differs from other species by the very narrow and almost symmetrical digitus, ampulla, and pollex, and the strongly curved phallus.

Figures

PLATE 8. Figures 1–8. Pollex subgenus Bilobiana species, adults. 1, P. (B.) angustiae, male holotype, Indonesia, Sumatra, Padang, Panjang; 2–4, P.(B.) oculus, male paratype, Philippines, Palawan, Aboabo, male holotype, Philippines, Balabac, Dalawan Bay, and male paratype, with same data; 5, P.(B.) bulli, male holotype, Philippines, Palawan, Brookes Point; 6, P.(B.) taurus, male holotype, Philippines, Mindanao, Cotabata S; 7, P.(B.) schintlmeisteri, male holotype, Indonesia, W Seram, Kamarlan; 8, P.(B.) hamus, male holotype, Philippines, Leyte, Ormoc.