2 
EUSEMIA. By Dr. K. Jordan. 
connexa. 
Ill the dry specimens of collections a bundle of radiating hair is frequently observed to project from 
segment 4, and this has been the reason for the erroneous statement that some genera have two scent- 
tufts on each side. The tuft of segment 4, however, is nothing but the apex of the tuft of segment 1. 
The organs of stridulation found in the °f some species — such species occur in America, 
Africa and Indo-Australia — are structures similar to those observed in many Noctuids. They consist 
of transversely ribbed vitreous areas on the fore- and hindwings, and, as is evidenced by the structure 
of the hind tarsus of P. tetrapleura (cf. p. 21), the loud chirping of these stridulating species is produced by 
a leg being pressed during flight against the ribbed area. 
The sexes are in most cases very similar in markings and colour. But there are some species 
which are so strongly dimorphic sexually that the d'd' and $$ have been described as different species 
(cf. e. g. Immetalia , Scrobigera , Damias). Polymorphism independant of sex also occurs, particularly 
frequent being species in which the specimens have either yellow to orange-red bands or white ones; 
many species are also very markedly variable geographically. 
The caterpillar is only known of a few species. It is usually gaily coloured, being transversely 
banded and bearing bright spots above the legs. The head and a large spot on segment 11 as well 
as the pronotum are as a rule yellow or red, and this appears mostly to hold good if the body is other¬ 
wise of a sombre colour. Each segment has a number of black polished dots each of which bears 
a long pale hair, the larva being otherwise naked. These hairs have sometimes a lanceolate apex. Seg¬ 
ment 11 is somewhat elevate and posteriorly strongly declivous. Pupation takes place in the ground 
close to the surface. The pupa is more or less truncate at the apex. 
The Agaristids fly nearly all by day. Many of them visit flowering trees, while other species 
whiz about near the ground. Some do not appear before sunset, aud several, especially American 
species, come to the lamp. The Agaristids are on the whole without particular economic importance; 
but in Australia the vine, an introduced plant, is more in favour with several Agaristids than the 
indigenous food-plants, the caterpillar of P. glycinae appearing sometimes in such numbers as to do 
considerable damage. 
1. Genus: Eiisemia Dalm. 
Eyes naked; antennae distinctly incrassate distally; legs smoothly scaled, fore tarsus at least 
twice as long as the tibia, in $ with three rows of spines on the underside, the spines of the middle 
row short and erect forming a kind of comb, segment 5 of all the tarsi with naked sole in $ (covered 
with exceedingly short hair when strongly magnified), the inner claw of the fore tarsus of the $ 
slender and long, without tooth, the outer one much smaller and bearing a tooth, claw of mid tarsus 
slightly asymmetrical, at least in some species, in hind tarsus symmetrical and toothed like all the 
claws of the $$; the sole of segment 5 of $ with four rows of spines or clothed with numerous 
yellowish, feebly chitinised hairs whose tips are generally distinctly bent towards the body. Abdo¬ 
minal segment 8 and the claspers very characteristic; the former nearly always produced beneath on 
each side into a strong lobe which rests against the clasper of that side, the clasper being more 
or less depressed along the centre on the ventral side and covered with modified scaling. ISTeura- 
tion likewise characteristic: forewing without areole, cross-vein of both wings deeply incurved, upper 
angle of cell acute in hindwing. — The larvae are only known of 2 species; they bear like all the Aga- 
ristid larvae single long hairs on smooth dots. The moths visit flowering trees in daytime. Most spe¬ 
cies are very abundant. The genus is Indo-Malayan and reaches northward to the Yang-tse-kiang di¬ 
strict and eastward to Sumba. 
a) The naked sole of tarsal segment 5 of J strongly elevate in keel-shape, in $ densely covered in all the tarsi with 
curved yellowish hair. Abdomen beneath ringed with black, but the black bases of the segments in the <£ usually very 
narrow and concealed. 
E. connexa Walk. (la). Coxae with yellowish hair, mesonotum only anteriorly with yellowish 
white spots, metanotum with yellowish hair at the sides, tibiae more or less extended, white on the 
upperside. Markings of forewing pale yellow: a basal dot in front of the cell followed by a triangular 
cell-spot which is larger than in all the other species, two antemedian spots and an oblique post¬ 
median transverse row of three, and lastly a submarginal row of three moderately large and two or three 
very small spots. Hindwing red, with the costal and distal margins as well as a band exten¬ 
ding from the abdominal margin to the apex of the cell black; in the marginal border usually 1, 
rarely 2 small yellowish white submarginal spots. On the underside the markings of the fore wing paler 
and larger than above; of the spots the ante- and postmedian pairs are usually connected inter se; the 
black subcostal spot of the hindwing is either united with the costal border or stands isolated. 
Java, only known to me from the eastern part of the island. (Tengger Mts.), where the species is not actu¬ 
ally rare. 
E. hebe spec. nov. (4 a). This species is superficially so similar to vetula (1 c) that it is easily 
hebe. 
