Pollex (Bilobiana) circulari, Fibiger, 2007

Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, Zootaxa 1567 (1), pp. 1-116 : 78-79

Pollex (Bilobiana) circulari Fibiger, new species

( Plate 10 , figure 5; female genit. plate 26, figure 2)

Material examined.

Holotype: female, Indonesia, Sulawesi Utara, Dumoga Bone National Park, Edwards Camp , lowland forest, 664 m, -. iv.1985, leg. R. Ent. Soc. Lond., Project Wallace, B.M. 1985-10, genit. prep.3735 M. Fibiger. Coll. BMNH.

Diagnosis.

Wingspan: 11 mm.

Forewing: narrow, light brown.

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

Reniform: distinct, whitish grey, outlined by black.

Fringes: coloured like terminal area.

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

Underside: unicolorous grey brown.

Female genitalia.

7 th abdominal segment: heavily sclerotised; asymmetrical.

Anterior apophyses: length 1½ of posterior apophyses.

Position of ostium bursae: 2/3 anteriorly on 7 th segment (close to 6 th segment), slightly displaced to left. Antrum: very long, subbasally with two coils; posteriorly equally broad, almost straight, moderately sclerotised.

Ductus bursae: membranous, as long as corpus bursae.

Corpus bursae: globular.

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

Differential diagnosis.

P. circulari differs from other species by the anterior position of the ostium bursae, and the very long antrum with two subbasal coils.

Pollex (Bilobiana) pouchi Fibiger, new species

( Plate 11 , figure 1; female genit. plate 26, figure 4)

Material examined.

Holotype: female, [ Malaysia], Sarawak, Mt. Dulit , 4000 ft, moss forest, light-trap, 17.x.1932, leg. Oxford Univ. Exp. B. M. Hobby and A. W. Moore, genit. prep. 3736 M. Fibiger, BM 1933-254 . Coll. BMNH. Diagnosis.

Wingspan: 10 mm.

Forewing: narrow, blackish brown.

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

Reniform: distinct, yellow, outlined by black.

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

Underside: unicolorous grey brown.

Female genitalia.

Abdomen: broad, cup-like ventral plate in membrane between 9 th and 10 th segments and extending onto 8 th; probably with a pheromone function.

7 th abdominal segment: asymmetrical; heavily sclerotised, heavily fused with 6 th segment.

Anterior apophyses: a little longer than posterior apophyses.

Position of ostium bursae: close to 6 th segment, slightly displaced to left.

Antrum: basally narrow, thereafter heavily expanded and sclerotised, coiling.

Ductus bursae: membranous, as long as corpus bursae.

Corpus bursae: globular.

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

Differential diagnosis.

P. pouchi differs from other species by the sclerotised ventral plate ventrally in the membranous wall between the 8 th– 10 th abdominal segments, and the huge, coiling antrum.

Figures

PLATE 10. Figures 1–8. Pollex subgenera Proma and Bilobiana species, adults. 1, P. (Proma) archi, female holotype, Indonesia, Kangean Isl.; 2, P.(Bilobiana) kononenkoi, female holotype, Indonesia, Suwawesi N, Dumoga Bone National Park; 3, P.(B.) dumogai, male holotype, Indonesia, Suwawesi N, Dumoga Bone National Park; 4, P.(B.) palopoi, female holotype, Indonesia, Suwawesi, near Palopo; 5, P. (B.) circulari, female holotype, Indonesia, Suwawesi N, Dumoga Bone National Park; 6, P. (B.) sulawesii, male holotype, Indonesia, Sulawesi, Temboga; 7, P. (B.) merisulawesii, male holotype, Indonesia, Sulawesi, Tjamba; 8, P.(B.) lafontainei, female holotype, Philippines, Palawan, Mantalin ajan.

PLATE 11. Figures 1–8. Pollex subgenera Bilobiana, Proma, and Pollex species, adults. 1, P.(Bilobiana) pouchi, female holotype, Malaysia, Borneo, Sarawak; 2, P. (Proma) jurivetei, male holotype, Indonesia, W Seram, Kamarian; 3, P. (Proma) serami, male holotype, Indonesia, Seram, Kanikeh base camp; 4, 5, P.(Proma) maxima, male holotype, Indonesia, W Java, Sindanglaya, and female paratype, Indonesia, Java, Megamendong; 6, P. (Proma) paramaxima, male holotype, Indonesia, Lombok, Senaru; 7, P. (Pollex) crispus, male holotype, Indonesia, Sulawesi N, Dumoga Bone National Park; 8, P.(Pollex) furca, male holotype, Indonesia, Sulawesi N, Dumoga Bone National Park.