Matsumuraeses Issiki
Type species: phaseoli Matsumura
DIAGNOSIS
External characters:
Venation:
venation M. phaseoli
Forewing: All veins separate; chorda commences halfway between R 1 and R 2;
M -stem fully developed.
Hindwing: M 3 and CuA 1 shortly stalked. CuP atrophying.
Forewing shape and markings:
M. phaseoli adults ; Matsumuraeses falcana males
[Matsumuraeses phaseoli; Matsumuraeses falcana ]: costa arced, termen oblique, apex short or protruding. Markings variably developed; males often with grey-brown suffusions on dorsum basally, below costa, and on 2/3 of wing. Females almost uniformly ochreous-brown to ferruginous-brown or greyish-brown.
Additional characters:
abdominal segments 7 and 8 [Matsumuraeses falcana ]
Frons of head with very dense, erect and long scales, almost touching tips of labial palpi. Anal region of hindwing usually with groups of species specific modified scales in males.
Coremata well-developed, consisting of two pairs of scale tufts. In Matsumuraeses azukivora, the weak dorsal tuft is situated between seventh and eighth tergites and the ventral tuft on the distal part of the seventh sternite; in Matsumuraeses phaseoli and related species, both pairs are situated on the seventh sternite, the ventral tuft consisting of strong, thick, scales.
Genitalia:
Male:
male genitalia M. falcana
Tegumen with long pedunculi and often with somewhat prominent apical part. Socii fused with tegumen or (and) with one another, large, long hairy or very small, minutely bristled, forming a dorso-posterior plate. Neck of valva glabrous, very slender, ventral incision very deep; basal opening rather short, the membrane covering it often with a ventro-posterior hairy patch, or distal edge of opening convex and hairy. Cucullus broad, subtriangular (e.g. in Matsumuraeses phaseoli and Matsumuraeses falcana), or rounded ventrally and produced dorsally (e.g. in Matsumuraeses capax).
Female:
female genitalia M. phaseoli
Sterigma rather weakly sclerotized short, forming a very thin sclerotic ring around ostium, or anterior portion of sterigma (surrounding ostium bursae) membranous and postvaginal plate hairy terminally. Ductus bursae slender, provided with elongate sclerite; signa long, flattened terminally. Seventh sternite species specific, deeply incised posteriorly in Matsumuraeses phaseoli and related species.
Early stages:
Razowski and Yasuda, 1975, provide drawings of the larva and pupa of Matsumuraeses phaseoli.
Chaetotaxy of larvae: SV group trisetose on third to sixth abdominal segments, bisetose on seventh and eighth, unisetose on ninth (as interpreted from the picture provided by Razowski and Yasuda).
Biology:
Eggs are deposited under the leaves or on petals. The larvae live in rolled leaves or in seeds; the food plants are chiefly Papilionaceae (Matsumuraeses phaseoli is a pest of soybeen, Glycine); one species is found to feed on Barleria , Acanthaceae.
Distribution:
Eastern part of the Palaearctic region; Oriental Region.