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Symmacra Warren

Type species: regularis Warren, Khasia Hills.

Synonyms: Mnesithetis Warren (type species inobtrusa Warren, Sulawesi); Triorisma Warren (type species violacea Warren, Sikkim).

Symmacra and Dithecodes Warren both contain small olive green or brownish species with faint transverse fasciae and a broken white bar for the hindwing discal spot. The former is the oldest name. Species of the latter from S.E. Asia have recently been discussed by Sommerer (1994). The male antennae of both genera are strongly ciliated, the cilia robust, long.

The male abdomen has the second sternite strongly modified, almost pouched as in the Scopulini. The type species has the uncus apically bilobed as in some Dithecodes. The valves are small, triangular, apically cleft with the dorsal process flexed down over the ventral one. The aedeagus vesica contains a single cornutus. In S. solidaria Guenée the uncus is trifid, the slender lateral processes (socii?) being larger than the central one. The valve apex is more deeply cleft.

In the female (solidaria) the bursa is very elongate, generally scobinate and longitudinally fluted, but with no distinct signum. The ductus is relatively short, sclerotised, the ostium opening posterior to a transverse, bilobed flange.

Little is known of the host-plants of the two genera though the Japanese type species of Dithecodes feeds on Prunus, Malus and Sorbus in the Rosaceae (Sugi, 1989).

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