Publ. 24. III. 1915. 
65 
MESOTHEN. By Dr. M. Draudt. 
24. Genus: Mcsotlieii Hmps. 
Differs from the preceding genera particularly by the angular discocellulars of the hindwings. On the 
forewing the upper median vein rises from the cell-angle, or near it; the middle radial above it, as in Loxophlebia. 
M. bisexualis Dogn. Head black with a white forehead; thorax and abdomen are yellow, the 3 last bisexualis. 
rings and the prothorax black. The hyaline wings in the $ exhibit black veins and margins, apical spot and 
inner-angular spot; only the extremest base of the proximal margin is yellow. In the $ the whole inner-margin, 
two thirds of the costa, the subcostal and median, as well as the greatest part of the submedian and of the 
lower median vein are yellow. Expanse of wings: 21 to 22 mm. East Colombia. 
M. temperata Schaus. Head and palpi black, forehead white. Thorax black with dark yellow shoulder- temperaia. 
covers. Abdomen deep yellow, on the 1st ring a black dorsal spot; on the next 3 rings a large spot suffused 
by steel-blue, extending as far as the sides; the 2 last segments are black, too, with a steel-blue reflection. Thorax 
yellow, ventral valve at the end black. Femora yellow, anterior and middle tibiae and tarsi black, posterior 
tibiae and tarsi yellow, at the joints black. Wings hyaline with black veins, margins, apical and inner-marginal 
spots; subcostal centre yellow. Expanse of wings: 29 mm. Costa Rica. 
M. albifrons Schaus. Head and thorax black, forehead white; shoulder-covers yellow-striped; underside albifrons. 
and legs yellow, only the joints and tarsi black. Abdomen yellow, the 3 last rings black. Wings hyaline with 
black veins and margins; apex of the forewing broadly black; the base of both wings is somewhat yellow-haired. 
Expanse of wings: 25 mm. Colombia. 
M. albilimbata Dogn. Palpi black, forehead laterally white, in the middle black; vertex and antennae albilimbata. 
black; collar and shoulder-covers yellow, in front black-margined; the thorax is otherwise black with a yellow 
longitudinal and white transverse band; the 4 first abdominal rings are yelloAv with a black margin, the others 
above black, white-banded, beneath all yellow, only the 3 last ones black-curled. Wings hyaline with black 
nervures, a fine black margin and a somewhat broader black apex and yellow subcostal band; the median 
is partly yellow; at the base and inner-margin some yellow hairs. Expanse of wings: 31 mm. From Colombia 
at an altitude of 3200 m. 
M. doris Druce is a species of an expanse of about 40 mm, with a quite pale yellow body; antennae, doris. 
terminal joint of the palpus and a dorsal macular series on the abdomen black. Wings hyaline with black 
nervures and margins, the costal margin and veins at the base yellow. Colombia. 
M. flavicostata Druce. Body yellow; palpi and antennae black, the shaft on the latter half-way white, flavicostala. 
Collar, thorax, and the abdomen dorsally on all the segments, with black spots, the last segment quite black. 
Legs yellow. Base and costal margin of the forewing is yellow, veins, margins and apical spot black. South 
East Peru. 
M. nomia Druce has a chrome-yellow body; antennae black, collar bordered with black. The abdomen nomia. 
is banded with metallic-blue, the 2 last segments are quite blue. Wings yellowish hyaline with black veins, 
borders and apical spot; base of the forewing and costal margin as far as the cell-end yellow. Expanse of wings: 
35 mm. Colombia. 
M. mysia Druce. Head, antennae, palpi and legs are black, the rest of th,e body yellow, the abdomen mysia. 
with black bands. Wings hyaline with black veins, margins and apical spot. Expanse of wings: 32 mm. South 
East Peru. 
M. rogenhoferi Schaus. Head black with a white forehead and yellow hind head, thorax and abdomen rogenhoferi. 
yellow. The thorax exhibits above a black middle stripe; the abdomen is dorsally and laterally black-striped, 
the stripes vanishing posteriorly. Joints and tarsi black. Wings hyaline with black veins, margins and apical 
spot, base of the inner margin yellow. Expanse of wings: 30 mm. Brazil (Rio de Janeiro). — perflava Kaye , perflava. 
which may belong hereto, differs by its black-striped shoulder-covers, absent black lateral stripes and black 
last abdominal ring. Described from Santos. 
M. ockendetli Druce. The head with antennae and palpi is black, the forehead white, thorax and ockendeni. 
abdomen orange-yellow. The abdominal rings are black-spotted, the last ring quite black, so are the thorax 
and legs. Wings hyaline with black veins, margins and apical spot. Expanse of wings: 45 mm. South East Peru. 
M. dorsimacula Rothsch. Head black with fine white dots; antennae black, white before the tips, dorsimacu- 
Thorax and abdomen golden orange; the abdomen exhibits on the first 2 rings a black middle spot; the 2 
penultimate segments are black, the last being metallic-blue. Legs brown, forehips white. Wings hyaline with 
black veins, margins, inner-marginal and apical spots, the base being orange, distally black. Length of forewings: 
17 mm. Costa Rica. 
M. aurantiaca Dogn. Head black, forehead white, thorax and abdomen orange; the tips of the shoulder- aurantiaca 
covers, 2 dots on the thorax blue-black, as well as 5 dorsal spots from the 2nd to 6th abdominal rings; on the 
3rd to 6th ring there are besides somewhat smaller lateral spots; the 3 last rings are black with a green reflection. 
VI 
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