LEPIDOPTERA. — PYRALIDZ. 399 
Fig. 110. 




sionally furnished with a pair of ocelli; the thorax is of moderate 
size, never crested; the wings are also of moderate size, and gene- 
rally placed in a triangle during repose (whence Latreille’s name of 
Deltoides given to the section composed of the typical group 
Jig. 110.1. Hypena proboscidalis) ; the anterior wings are generally 
slightly angulated at the tip; the legs are ordinarily very long, especially 
the fore pair, of which the coxz are nearly as long as the tibia (as in 
Hydrocampa Potamogata, fig. 110. 9.), thus indicating the great 
activity of movement which these insects so frequently exhibit. In 
some species the fore legs of the males are singularly ornamented 
with fascicles of hairs capable of expansion, whence the species have 
received the name of fan-footed moths* ; the anterior tarsi of the males 
of some of the species of Pyralis are obsolete. There is a considerable 
diversity, however, not only in the perfect insects, of which this 
family is composed, but also in the preparatory states ; in general, 
the caterpillars are long and slightly hairy (fig. 110. 2.; larva of Hy- 
pena proboscidalis). They vary in the number of legs, having mostly 
only three, but sometimes four pairs of ventral feet (fig. 110. 11. 
larva of Hydrocampa lemnalis). ‘They are never geometrical in their 
motion, nor radicivorous in their habits, nor are their bodies densely 
clothed with hairs ; in all which respects they vary from the preced- 
ing and following groups; but it is to be admitted, that the limits of 
the family are not clearly defined; for instance, Latreille confines it 
to his genus Herminia, composed of the strongly rostrated species 
(Crambus barbatus, rostratus, &c.), whilst Stephens considerably 
increases its extent, and adds to it the genera Nola, Simaéthis, and 
some other anomalous genera, forming Latreille’s first section of 
* As also in the Indian typical Hyblae Fabr. See Esper, Monogr. on this g. 
in Der Naturforscher, st. 29. . 
