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Dasyboarmia Prout

Type species: hyperdasys Prout, Sumatra (montane).

Synonyms: Metamenophra Inoue (type species subpilosa Warren) syn. n.; Semimenophra Inoue (type species owadai Sato (1987a), Philippines) syn. n.

In facies the current two species of this genus resemble members of the delineata Walker complex (Sato, 1987b) and share male genitalic features of that group such as a laterally looped vinculum supporting coremata from the valve bases. The male antennae are narrowly bipectinate, the pectinations curved round to meet each other, making a tube.

Recent work on the Menophra group (Sato, 1987a, b; Inoue, 1990) has clarified the taxonomic situation and morphological characteristics involved to some extent as discussed for the previous genus, but these works did not consider the genus Dasyboarmia. The synonymy presented here reflects the synapomorphy of the expanded vinculum supporting the coremata at the valve bases. The valves tend to be simple, rounded or triangular, the dorsobasal processes (associated with the transtilla) robust, digitate. In the female genitalia the basal part of the bursa is narrow, elongate, continuing the line of the ductus, fluted, sclerotised, usually with distal spining, extending usually asymmetrically into a rounded or ovate distal portion where a large, finely dentate, mushroom- like signum occurs.

The original Dasyboarmia taxa, a new Bornean species and Semimenophra from the Philippines show stronger development of the valve coremata, and may bear a sister-relationship to the Metamenophra group where the male genitalia show some uniformity of structure.

The genus is purely Oriental. All four Bornean species are montane, and include a sister-pair endemic to the island but, on current records, distributed allopatrically in montane habitats.

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