Pollex (Bilobiana) taurus, Fibiger, 2007

Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, Zootaxa 1567 (1), pp. 1-116 : 66-67

Pollex (Bilobiana) taurus Fibiger, new species

( Plate 8 , figure 6; male genit. plate 18, figure 4)

Material examined.

Holotype: male, Philippines, Mindanao, S Cotabato, Parker Mts, Salacafe , 770 m, light-trap, 2-12.iv.1985, leg. R. A. Müller, genit. prep. 3925 M. Fibiger. Coll. RMNH.

Diagnosis.

Wingspan: 13 mm.

Forewing: narrow, light brown, except dark brown basal and subterminal areas.

Transverse lines: brown; terminal line marked by black dots between veins.

Reniform: distinct, whitish grey, outlined by black.

Fringes: coloured like subterminal area.

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

Underside: unicolorous dark brown.

Male genitalia.

Tegumen: narrow.

Vinculum: short, stout.

Saccus: U-shaped, short.

Fultura superior: similar to a wide U with narrow arms, fused with upper middle of tegumen and ventrally broadly with juxta-anellus; each arm with a prominent, long, medially bent, laterally directed, pointed process.

Valve: shorter than wide.

Ampulla: almost symmetrical, relatively long and narrow, club-like; densely setose with long hair-like, inwardly bent setae.

Pollex : almost symmetrical, prominent, shorter than ampulla, slightly upturned, subapically broadest; subapically densely setose with long, hair-like, inwardly bent setae.

Digitus: almost symmetrical, long, very narrow, tapered, slightly curved, directed ventrally, apically pointed; right digitus slightly longer.

Juxta-anellus plate: large, higher than wide, hole for phallus positioned medially in plate.

Phallus: long, bent, slightly tapered towards apex; broadest by ductus ejaculatorius; coecum short and narrow. Vesica: unarmed.

Differential diagnosis.

P.taurus differs from other species by the almost symmetrical digitus, ampulla, and pollex, the long, medially bent process from each upperside of broad, U-shaped part of fultura superior, and the unarmed phallus, which is broadest by the ductus ejaculatorius.

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.