Pseudopammene Komai
Type species: fagivora Komai
The genus is monotypic.
DIAGNOSIS
External characters:
Venation:
venation P. fagivora (male)
venation P. fagivora (female) (hindwing only)
Forewing: All veins separate, chorda extending from 2/3 of R 1 - R 2 to base of R 5, M -stem fully developed, equidistant from M 2 and M 3, CuP vestigial.
Hindwing: Sc and R fusing to beyond median cell in the males, in females R and M 1 stalked; M 3 and CuA 1 stalked almost to edge of wing.
Forewing shape and markings:
Pseudopammene fagivora female
See description of Pseudopammene fagivora.
Additional characters:
Male hindwing with scent scales along distal thirds of Sc and radial branch of median cell.
Further scent scales: Bunch of hair like long scales originating in elliptic area of lateral portion of eight tergite, and a group of broad scales attached to the end of eight sternite situated at the level of costa of valva.
Genitalia:
Male:
male genitalia P. fagivora
Tegumen broad, with rather pointed top. Sclerites of tuba analis weak, lateral sclerites linking it with pedunculus slender, sclerotic. Valva with a small basal opening; cucullus large. Aedeagus slender, little curved, gradually narrowed, with group of short, deciduous cornuti in vesica.
Female:
female genitalia P. fagivora
Ovipositor somewhat elongate; sterigma slender, postvaginal plate with distinctly sclerotized lateral edge, antevaginal sclerite not developed; ostium bursae protected by ventro-lateral sclerite; cestum anterior, accompanied by weak postmedian sclerites; ductus seminalis long, originating at cestum, laterally; corpus bursae with two horn-shaped signa. Subgenital sternite small, deeply incised distally.
Early stages:
Komai, 1980, provides illustrations of larval chaetotaxy.
Prothoracic plate with MXD1 on its posterior margin. SD1 directly above spiracle on A1-7, and anterior to it on A8; pinaculum of SD2 usually fused with that of SD1 but sometimes separate; L1 and L2 directly below spiracle except on A8; pinaculum of D2 large on A9, fused with common pinaculum of D1 and SD1; SV group trisetose on A1-6, usually bisetose on A7-8, and unisetose on A9.
Biology:
Larvae bore into the nuts of Japanese beech, Fagus crenata. They pupate within cocoons in the litter or in the soil, and overwinter in the pupal stage. According to Komai, 1980, adults emerge from late April to May; according to Igarashi and Kamata, 1997, adults are observed from mid May to early July. The species is univoltine.
Distribution:
Japan (Honshu).