80 
SEMAEOPUS. By L. B. Prout. 
citrina. 
concate- 
nans. 
lutea. 
euthyoria. 
pustulata. 
auranti- 
rufa. 
vivata. 
perpolita- 
ria. 
gracilata. 
caecaria. 
obliterate. 
grisea. 
occipitaria. 
distinct ate. 
rubella. 
nossis. 
subrubra. 
dominica- 
na. 
argenti- 
puncta. 
fuscicosta. 
S. citrina Druce (10 b). Much like a yellower form of illimitata, possibly a small northern race of the 
same. Mexico, 1 British Honduras. 
S. concatenans Dyar. “Hull ochre, irrorate with purplish; forewing with 3 lines, hindwing with 2, pale 
purplish, wavy and denticulate; discal dots on both wings moderate, rounded, of black and purple scales. Expanse 
26 mm. Zacualpan, Mexico. Near citrina (10 b), slenderer, less yellow, the lines thicker although not darker.” 
S. lutea Dogn. seems to belong in this vicinity, but the 2nd subcostal of the forewing is just stalked 
with the 3rd—-5th. Hindlegs lost in the unique type. Antenna not quite pectinate. “26 mm." Ochraceous 
yellow, the lines brownish, on the forewing dentate, with the outer running inwards at vein 2; the weakness 
of the diffuse median shade compared with the strength of the postmedian creates a superficial impression 
of a Spilocraspeda. Loja. 
S. euthyoria Prout (10 b). Unmistakable on account of the straight, or almost straight central line 
of the forewing (not oblique like that of plerta). Antenna of £ merely with short filiation. Forewing with 2nd 
subcostal from cell. Cell-dots small, but white-pupilled. Rio Madeira and subsequently obtained by Fassl in 
E. Colombia. 
S. pustulata Warr. (10 b). Best known by the blotches on the subterminal, those at the radials and 
at the submedian fold large. Structure nearly as in euthyoria, the antennal filiation a little longer. The name- 
typical race, from S. E. Peru, is of a “deep yellow” colour, almost clear orange. — aurantirufa Prout, from Costa 
Rica and British Honduras, is much more rufous and has the cell-spots reduced in size, the dark dorsal patch 
of the abdomen weakened. •—- vivata subsp. nov. Deeper orange than type, less reddish than aurantirufa , the 
grey shading proximally to the median obsolete. E. Colombia: Upper Rio Negro, 800 m (A. H. Eassl), type 
in coll. Prout, others in the British and Tring Museums. 
S. perpolitaria Moschl. (= irmata Oberth.) (10 b). Yellower, the <$ antenna with long fascicles of cilia, 
the wing-markings quite distinctive, notably the terminal mark near the apex of the forewing. First known 
from Surinam, but distributed to Venezuela, Peru, Bolivia and Matto Grosso. 
S. gracilata GrossbecJc (10a), on which its author founded a superfluous genus Dasycosymbia, scarcely 
differs at all in structure from the other Semaeopus forms in which the f j hindleg is the most highly tufted; 
there is said to be 1 spur on the hindtibia, but this cannot be observed without denuding the leg and in any 
case is not generic (compare inficeta, p. 77, pi. 9 h). Antenna of G with fascicles of moderate cilia. Arizona. 
S. caecaria Hbn. (= punctata Stoll, nom. praeocc., fartaria Guen.) (10 c). A variable species, but 
generally not difficult to recognize, especially in its typical forms, with their strong maculation in the basal 
and distal areas. Antenna of G nearly as in gracilata ; hindtibial tuft in part dark reddish, as in so many S. 
American Semaeopus. — In the weakly marked forms the said maculation is generally indicated in greyish, 
sometimes scarcely observable; these may be called —- ab. obliterata ah. nov. —* ab. grisea Warr. has the ground¬ 
colour “grey-fawn”, not reddish. The species is very generally distributed in Central and South American, 
as far as Argentina. —• occipitaria H.-Sch. (= occipitraria Moschl.) is perhaps synonymous, or preferably to 
be regarded as the Cuban race, intermediate towards the following. Also recorded from Porto Rico. ■— distiilctata 
Warr., from Dominica, is generally redder, typically with the dark maculation as weak as in ab. obliterata ; 
but perhaps the best character is the stronger developement of the dark terminal line in distinctata. Similar, 
of not identical forms are known also from St. Lucia, St. Vincent and Grenada. —- ab. rubella Warr., also from 
Dominica, is evidently nothing more than a small, weak-marked form of distinctata. 
S. nossis Prout (10 c). Much like diminutive caecaria (10 b), but with the 3rd joint of the palpus shorter. 
Ground-colour more cinnamon; subterminal dots not macular, postmedian line less sinuous and less strongly 
denticulate than in caecaria. Venezuela. 
S. subrubra Kaye (10 c). Very similar to caecaria ab. obliterata and nossis, but with the vertex dark 
(in both of those species white). Described from Trinidad, known to me also from the Guianas and the Amazon. 
— • doniinicana Prout. Rather smaller, ground-colour more mixed with orange or rufous, postmedian line 
less strongly dentate, termen with fine dark dashes instead of dots. Possibly a separate species. Dominica 
S. argentipuncta Warr. (10 c). Possibly a pale form of subrubra, but it seems constant in Venezuela, 
while the redder forms are constant throughout the range given above. The name, should the two need to 
be merged, would have four years’ priority over subrubra. 
S. fuscicosta Warr. (= johannis Schaus) (10 c). An inconspicuous species, best known by the strongly 
darkened costal edge. Third joint of the palpus on the $ longer than in most Semaeopus, antenna with fascicles 
of cilia suggesting those of a G- W. Ecuador (Warren) and Costa Rica (Schaus). 
