LEPIDOPTERA 



of these spots is bordered with black, and has a white spot above and 

 below, on the edge of the segment. The hind wings are crossed by four 

 blackish lines, of which the two intermediate are zigzag. 



The tobacco-worm, Protopdrce sexta. — This species closely resem- 

 bles the preceding and the two are often mistaken the one for the other. 

 The larvae have similar habits, feeding on the same plants; but in this 

 species the larva lacks the series of longitudinal stripes characteristic 

 of the tomato-worm. The moths are easily distinguished; this species 

 is brownish-gray instead of ashy-gray; at the end of the discal cell of 

 the fore wings there is a distinct white spot; and the two dark bands 

 crossing the middle of the hind wings are not zigzag, and are less dis- 

 tinctly separate; often they are united into a single broad band. 



The hog-caterpillar of the vine, Ampelceca myron. — There is a group 

 of hawk-moths the larvae of which have the head and first two thoracic 

 segments small, while the two following segments are greatly swollen. 

 These larvae from a fancied resemblance to fat swine have been termed 

 hog-caterpillars; and the present species, which is common on grape, has 

 been named the hog-caterpillar of the vine. It is a comparatively small 

 species, the full-grown larva being but little more than 2 inches long. 

 There is a row of seven spots varying in color from red to pale lilac, each 

 set in a patch of pale yellow, along the middle of the back. A white 

 stripe with dark green margins extends along the side from the head to 

 the caudal horn, and below this are seven ob- 

 lique stripes. This larva is often infested by 

 braconid parasites; and it is a common oc- 

 currence to find one of them with the cocoons 

 of the parasites attached to it (Fig. 380). 

 The pupa state is passed on the surface of the 

 ground within a rude cocoon made by fasten- 

 ing leaves together with loose silken threads. The adult expands about 

 2^ inches. The fore wings are olive-gray, with a curved, olive-green, ob- 



Fig. .380. — Ampelcsca myron, larva with 

 cocoons of parasites. 



Fig. 381. — Pholus pandorus. 



lique band crossing the basal third, a discal point of the same color, and 

 beyond this a large triangular spot with its apex on the costa and its base 

 on the inner margin. 



The pandorus sphinx, Pholus pandorus. — This magnificent moth 



