Pollex (Bilobiana) oculus Fibiger, 2007, new species
Creators: name: Fibiger, Michael
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Pollex
Pollex oculus

description: Pollex (Bilobiana) oculus Fibiger, new species   
(Plate 8, figures 2–4; male genit. plate 18, figures 1, 2; female genit. plate 25, figure 2)  
Material examined.  
Holotype: male, Philippines, Balabac, Dalawan Bay, 8.x.1961, leg. Noona Dan Exp. 1961–62, genit. prep. 3502 M. Fibiger. Coll. ZMUC.  
Paratypes: 10 males, 1 female: 7 males and 1 female with same data as holotype but 8–12.x.1961, male genit. preps 2948, 3488, 3500, 3504, 3530, 3542, 3543, female 3487 M. Fibiger. Colls. MF, ZMUC. 2 males, Philippines, Palawan, Bookes Point, Uring Uring, 19. and 27.ix.1961, genit. preps 2945, 5642 M. Fibiger. Colls. MF, ZMUC. 1 male, Philippines, Palawan, Aboabo, 134 km S Puerto Princessa, 14.xii.1965, leg. D. R. Davis, genit. prep. 5730 M. Fibiger. Coll. USNM.  
Diagnosis.  
Wingspan: 8–10 mm.  
Forewing: narrow, light brown by medial area, rest of wing dark brown.  
Transverse lines: brown; terminal line marked by black dots between veins.  
Reniform: distinct, whitish grey, outlined by a narrow black line.  
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: T-shaped with one narrow arm on each side, fused with upper middle part of tegumen and ventrally broadly with juxta-anellus; each horizontal arm with a prominent, spike-like, dorsoventrally directed process.  
Valve: shorter than wide.  
Ampulla: almost symmetrical, relatively short, subapically broadest; densely setose with long hair-like setae bent inwards.  
Pollex: symmetrical, prominent, almost as long as ampulla, slightly upturned and almost equally broad throughout; subapically densely setose with long, hair-like setae bent inwards.  
Digitus: almost symmetrical; relatively short, tapered, directed slightly ventrally, pointed apically.  
Juxta-anellus plate: large, higher than wide.  
Phallus: long, curved, slightly tapered towards apex; coecum short and narrow.  
Vesica: unarmed.  
Female genitalia.  
 7 th abdominal segment: heavily sclerotised, asymmetrical.   
Anterior apophyses: length 1½ of posterior apophyses.  
 Position of ostium bursae: medially in 7 th segment, slightly displaced to left.   
Ostium bursae: heavily sclerotised all way round.  
Antrum: short, cylindrical, heavily sclerotised.  
Ductus bursae: membranous, long, 3 X longer than corpus bursae.  
Corpus bursae: globular.  
Appendix bursae: arising anteriorly from ductus bursae immediately after antrum.  
Differential diagnosis.  
 P. oculus differs from other species by the almost symmetrical digitus, ampulla, and pollex, the spike-like processes from the fultura superior, the unarmed phallus, and the short cylindrical, heavily sclerotised antrum.
description: Published as part of Fibiger, Michael, 2007, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 1, Taxonomy of the Pollexinae, pp. 1-116 in Zootaxa 1567 (1) on pages 64-65, DOI: 10.11646/zootaxa.1567.1.1, http://zenodo.org/record/5096260