HEMIHYALEA. By Dr. A. Seitz. 
416 
subfenui- H. subtenuimargo Rothsch. (49 c). Wings hyaline, except the margins, the apex very brownish. Costal 
mnrgo. an( j p r0 ximal margins with a yellowish-brown stripe, the border with a proximally indistinct, narrow, dark 
brown marginal band. The border of the hindwing narrow yellow; head and thorax dark brown, forehead 
whitish, abdomen vermilion. Taken by Fassl on Mt. Tolima in Colombia. 
brunnes- H. bruntiescens Rothsch. (49 d) is quite similar, but the brown distal margin of the forewing is broader, 
mis. the costal stripe very narrow, the hindwing in the proximal half rosy. Colombia and Peru. 
fusco. H. fusca Rothsch. (49 c) likewise entirely resembles subtenuimargo , but the brown border of the fore¬ 
wing is narrow, towards the hyaline ground of the wing more distinctly defined, and besides the base of the 
forewing is broadly brown. In typical specimens the head and thorax is of a very deep dark brown; — in the 
peruviana, form peruviana Rothsch. from Carabaya in Peru the head and thorax are of a lighter brown. —- colombiana 
colombiana. Rothsch. from Bogota in Colombia has the margins of the wings paler, too, besides the head and thorax. 
ergana. H. ergana Dgn. (49 c). In this somewhat smaller form the whole wings are tinged yellowish, head, 
prothorax and patagia are ochreous yellow, mesothorax and the whole abdomen rosy-red. From Colombia 
and Venezuela to Peru and Bolivia. 
debilis. H. debilis Rothsch. (49 c). Also here the wings are quite yellowish, at least the veins yellow also in 
the hyaline ground of the wings, but the apical part of the forewing is darkened and the abdomen, which is 
of a bright red nearly in all the other Hemihyalea, is here yolk-coloured, above often yet covered with grey 
hair. Before me only from Merida (Venezuela). 
tenuimargo. H. tenuiniargo Dgn. (49 c). Entirely like subtenuimargo, but smaller, the wings clearer, without the 
dark border, the terminal third of the abdomen, however, dark brown. Colombia. 
parergana. H. parergana Dgn. (49 cl). In this species the forewings are on the whole not so hyaline as in the 
preceding, but slightly darkened by red-brown, particularly at the margins, round the cell-end of the forewing, 
at the proximal margin and base of the forewing; on the forewing a whitish, antemarginal, undulate line. From 
Colombia; Tolima, Quindiu Pass. 
erganoides. H. erganoides Dgn. ($ = orientalis Rothsch.) (49 d). Head and thorax of a bright red-brown, ab¬ 
domen vermilion, the wings quite hyaline, but with yellowish-pink margins. Venezuela. 
argiliacea. H. argillacea Rothsch. (49 cl). Entirely like erganoides , but the head and thorax of a bright volk- 
colour. Found in the Gold Mountains in Oregon, reported also from Guatemala. 
ritreata. H. vitreata Rothsch. (49 c). Almost exactly like debilis, also with a dull yellow abdomen, but the 
wings of a purer hyaline, only the proximal half of the hindwing more intensely yellow; discernible by the bright 
white upper head and collar. Mt. Tolima in Colombia. 
hyaUna. H. hyalina Dgn. (47 g). Described from Loja in Ecuador, but our figure according to a specimen 
determined as. ,,hyaline Dgnd ‘ by Dognin himself, but having been captured by Fassl on Mt. Tolima at an 
altitude of 3200 m. Wings quite purely hyaline, the margins and body light yellow, marked whitish. 
vUripennis. H. vitripennis Hmps. (= hyalina Drc. nec Dgn.) is quite similar, though smaller, the hairing of the 
abdominal dorsum more ochreous yellow, the margins of the wings fine whitish. Mexico (Guerrero). 
alba. H. alba Drc. (49 cl) is quite similar, but the body and the margins of the wings white, prothorax 
and abdominal end very little marked greyish-brown. Size of hyalina Dgn. Mexico and Central America. 
cornea. H. cornea H.-Schdff. (49 e). The $ entirely like alba, but very much smaller; the has a somewhat 
more yellowish border of the forewing with traces of a whitish, undulate subterminal line, and the dorsum 
of the abdomen tinded red. Colombia and Venezuela. 
daraha. H. daraba Drc. from Mexico was reckoned to cornea, but it has well developed brown costal spots 
at the costal margin of the forewing. Mexico (Jalapa). 
rhoda. H. rhoda Drc. ( — fuscescens Rothsch.) (49 e) is like daraba, but the forewings are uniformly tinged 
hidalgon is. reddish-brown, and the abdomen is above red-haired. Mexico and Central America. — ab. hidalgotlis Dyar 
are specimens with very dull traces of light transverse bands on the forewings. 
testa ecu. H. testa cea Rothsch. (49 e). The $ differs from cornea -<$ by the absence of the whitish subterminal 
macular chain of the forewing; the $ shows the forewings thinly, though uniformly covered with red-brown. 
Mexico and Central America. 
H. antiaria Dyar differs from testacea only on the forewing by an antemarginal row of quite obsolete, 
sometimes scarcely distinguishable, small dark rings with light pupils. Costa Rica. 
annarm. 
