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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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