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Hypochrosis
hyadaria Guenée
Hypochrosis hyadaria Guenée,
1857, Hist. Nat. Insectes, Spec. gen. Lep., 10:537.
Marcala ignivorata Walker,
1862, List Specimens lepid. Insects Colln Br. Mus., 26: 1764.
Oxydia korndoerfferi Snellen,
1877, Tijdschr. Ent., 20: 73, syn. n.
Marcala obliquaria Moore,
1888, Descr. new Indian lepid. Insects Colln. Atkinson, p.232.
Hypochrosis annulata Pagenstecher,
1896, Ent. Nachr., 22: 52, syn. n.
Omiza columbaris Warren, 1896, Novit. zool. 3: 417, syn.
n.
Omiza subaurantiaca Warren,
1896, Novit. zool., 3: 417, syn. n.
Omiza lubricata Warren, 1809, Novit. zool., 6: 65, syn.
n.
Hypochrosis hiresia
Swinhoe, 1901, Ann. Mag. nat. Hist. (7) 8:125, syn. n.
Hypochrosis tinctaria bebaea
Prout, 1932, J. fed. Malay States Mus., 17: 84.
Hypochrosis hyadaria bebaea
Prout; Holloway, 1976: 76.
Diagnosis. This species is a warm pale grey with a pale greenish tinge medially on
the forewing. Both wings are finely and lightly striated with darker brown grey.
The fasciation and discal markings resemble those of Heterolocha species
but are more sharply defined, with the forewing antemedial more oblique, not
quite parallel to the postmedial.
Taxonomic notes. H. hyadaria belongs to a complex of species that are very similar
in wing pattern but can be separated reliably on characters of the male
genitalia. These are also used to bring together a number of taxa as synonyms of
hyadaria though some could merit subspecific status as noted below. In hyadaria
the apical process of the valve costa is very small, and the furca is very
reduced, only the left arm being present and small. H. chlorozonaria Walker
(= sulphurescens Moore, galbulata Felder) from Sri Lanka has
similar genitalia but with a narrower valve and a much longer, slender left arm
to the furca. H. abstractaria Walker (= tinctaria Walker, irrorata
Moore) has more elongate genitalia with a long, slender, dilated process to
the valve costa; the species flies in the N.E. Himalaya, Burma and Thailand.
Geographical range. India through S.E. Asia; Borneo (ssp. bebaea); Sumatra,
Java, Bali (ssp. korndoerfferi stat. n. = columbaris); Flores,
Sumbawa (ssp. lubricata stat. n.), Timor (ssp. subaurantiaca stat. n.);
Philippines, Sulawesi (ssp. annulata stat. n.)
Habitat preference. On G. Kinabalu the species was taken in abundance at
stations between 1000m and 1930m, with a singleton at 2110m. During the Mulu
survey three specimens were taken in upper montane forest (1780m).
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