MAPLE CATERPILLARS. 395 
pupa, cocoon, and male and female iniagos ; and still later (Entom. Corresp., 1869, 
p. 295-297) he gives a more extended description of the larva. Morris (Synop. Lepid. 
N. A., 1862, p. 220) briefly describes the larva. Packard (Guide Study Ins., 1869, p. 
299) gives brief notes on this species under the name of Hyperchiria varia Walker. 
Bethune (Can. Entom., Oct., 1869, v, 2, p. 19, 20) briefly describes the larva, and 
Minot (op. cit., Nov., 1869, v, 2, p. 28, 29) describes egg and larva without recognizing 
the species. Lintner (Entom. Contrib., No. 2, 1872, p. 146-149) describes the egg, 
the six larval stages, the pupa, and the cocoon. Riley (Fifth Rept. State Entom. 
Mo., 1873, p. 133) describes egg, larva in its six stages, cocoon, and imago of this 
species, figuring larva and male and female imagos; and (Can. Entom., June, 1873, 
v, 5, p. 109) describes the egg in detail. Reed (Can. Entom., Dec, 1874, v, 6, p. 
Fig. 149. -Male of io moth.— After Eiley. 
227-229, and Ann. Rept. Entom. Soc. Ontario, 1874, p. 11-13) repeats Riley's figures, 
and describes the different stages very briefly. Grote (Can. Entom., Sept., 1878, v, 
10, p. 176) states that this species is double-brooded in the South. The food-plants, 
as compiled in chronological order from the above and from other notices of this 
species, are as follows: Populus balsamifera, Ulmus, Trifolium, Zea mays, and accord- 
ing to Abbot, Cornus and Sassafras [Harris, 1841] ; Quercus and Robinia viscosa [Har- 
ris, 1869] ; Cornus florida and Liriodendron [Morris] ; Humulus [Freeman (Amer. 
Entom., Oct., 1868, v. I, p. 39)] ; Gossypium and Acer [Packard] ; Salix [Bethune] ; 
Populus tremuloides, Robinia pseudacacia, and Cerasus virginiana [Lintner] ; Amorpha 
fruticosa, Baptisia, Prunus serotina, and currant [Riley]; Corynus avellana [Reed] ; 
Betula, Comptonia asplenifolia, apple, Lespedeza, Sympjioricarpus, and Fraxinus [Goodell 
(Can. Entom., Sept., 1877, v, 9, p. 180)]; Prinos verticillatus, Rubus villosus, and R. 
canadensis [Goodell (op. cii., Apr., 1879, v, ii, p. 78)], and Trifolium pratense [Pilate 
(Papilio, May, 1882, v, 2, p. 67)]. The larva also eats Betula alba. 
The larva. — About 2 inches long, of a pea-green color; the spreading, slender 
spines deeper yellow and often tipped with black. A lateral white line, edged above 
with lilac. 
The moth. — Males deep-ocher yellow marked with purple brown, with a large, 
round blue spot, bordered with black, with a central white dash. The fore-wings 
of the female are purple brown, the hind wings as in the male. In Massachusetts 
the moths appear during June or early in July. 
