Pollex (Bilobiana) kangeani, Fibiger, 2007

Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, Zootaxa 1567 (1), pp. 1-116 : 48-49

Pollex (Bilobiana) kangeani Fibiger, new species

( Plate 5 , figure 8; male genit. plate 16, figure 2, female genit. plate 23, figure 7)

Material examined.

Holotype: male [ Indonesia], Kangean Isl. , 22.viii.1954, leg. A. Hoogerwerf, genit. prep. 3918 M. Fibiger. Coll. RMNH.

Paratypes: 2 males, 6 females: 1 male, 3 females with same data as holotype ; 2 females, [ Indonesia], Kangean Isl., Bujutan , 19.viii.1954, leg A. Hoogerwerf, 1 genit. prep. 3921 M. Fibiger ; 1 male, [ Indonesia], W Java, Buitens , 1893. Colls. MF, RMNH .

Diagnosis.

Wingspan: 8–9 mm.

Forewing: brown, suffused with black scales.

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

Reniform: distinct, yellow, outlined by black.

Hindwing: unicolorous greyish-brown with an indistinct black discal spot.

Underside: unicolorous greyish-brown.

Male genitalia.

Tegumen: stout.

Vinculum: short, stout.

Saccus: V-shaped, short.

Fultura superior: Y-shaped with long narrow arms, fused medially with tegumen and ventrally with juxtaanellus.

Valve: shorter than wide.

Ampulla: long, finger-like, broadest subapically; densely setose with long hair-like setae bent inwards. Pollex : long, finger-like, equally broad throughout; subapically with densely setose, long, hair-like setae bent inwards.

Digitus: huge, tapered, curved, directed ventrally, apically pointed.

Juxta-anellus plate: round, as wide as high.

Phallus: long, bent by ductus ejaculatorius, slightly tapered towards apex; coecum short and broad.

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

Female genitalia.

7 th abdominal segment: heavily sclerotised, asymmetrical.

Anterior apophyses: length 1½ of posterior apophyses.

Position of ostium bursae: ¼ from anterior edge of 7 th segment, slightly displaced to left.

Antrum: basally and posteriorly narrow, medially enlarged, heavily sclerotised.

Ductus bursae: membranous, long, twice as long as corpus bursae.

Corpus bursae: globular.

Appendix bursae: arising anteriorly from ductus bursae immediately after antrum.

Differential diagnosis.

P. kangeani differs from the species above by the slightly bent, equally broad pollex, and the tapered phallus, which is broadest by the anterior end of ductus ejaculatorius. The female genitalia differ from those of P. flavimacula by the smoothly rounded anterior edge of the 7 th abdominal segment.

Figures

PLATE 5. Figures 1–8. Pollex subgenus Bilobiana species, adults. 1, 2, P. (B.) laosi, male paratype, Laos, Prov. Wapi, Wapikhamthong, and male holotype, with same data; 3, 4, P. (B.) flavimacula, male holotype, Indonesia, Sumatra W, Rimbo Panti, male paratype, with same data; 5, P.(B.) parunkudai, male holotype, Indonesia, Java, Pekalongan; 6, P.(B.) diehli, male holotype, Indonesia, Sumatra N, Dolok Merangir; 7, P.(B.) abovia, female holotype, Indonesia, Sumatra N, between Pematang Siantar and Tigadoluk; 8, P.(B.) kangeani, male holotype, male holotype, Kangean Isl.