. The American entomologist. Entomology. 238 THE AMERICAN ENTOMOLOGIST. most common of those found ou the Sweet- potato iu the latitude of St. Louis, is at once distinguislied from all the others here described by being usually black, with the shoulders black to the extreme edge of the transparent wing-covers. It is a very variable species, and is frequently more or less speckled or mottled Willi gold, while more rarely it has a uniform golden appearance.* The larva, which is represented enlarged and with the dung removed at Figure 179, a, is of a uniform green color, with a bluish shade along
. The American entomologist. Entomology. 238 THE AMERICAN ENTOMOLOGIST. most common of those found ou the Sweet- potato iu the latitude of St. Louis, is at once distinguislied from all the others here described by being usually black, with the shoulders black to the extreme edge of the transparent wing-covers. It is a very variable species, and is frequently more or less speckled or mottled Willi gold, while more rarely it has a uniform golden appearance.* The larva, which is represented enlarged and with the dung removed at Figure 179, a, is of a uniform green color, with a bluish shade along the back, which shade disappears however whenever the insect has fasted for a few hours. It carries its dung in irregular broad masses, often branching- as in the species next to be de- scribed. The pupa (Fig. 179, b), is also of a uniform green color, with a conspicuous black ring around the base of the first abdominal pair of spiracles. Before changing to pupa and pre- vious to each moult, this larva is in the habit of removing the dung from its fork. The Black-legged Tortoise-beetle. (Canshlii niijripes, Oliv.) [FiK 180]. Ciilors—(II amli-) while imd black; (i) blown This species, which is likewise found on the Sweet-potato, is a little the largest of those we have mentioned. The beetle (Fig. 181) has the power, when alive, of putting on agolden hue, but [Fig 181.] is not so brilliant as C. ai/rJc/iaZ- {, from which species it is at once distinguished by its larger ^^^^ size, and by its black legs and >HHK|Ui^ tlirce large conspicuous black i I ^HIkI / *P°'® '^^ ''^^'h wing-cover. The larva (Fig. 180, 6). is of a pale straw-color with the spines, low and black which are long, tipped with black; and besides a dusky shade along each ~ide of the back, it has two dusky spots .1 mediately behind the head, and below these ?'rhii^ rtpicics ha* very probablv been described under dif- int uames. It is C. cruciata, Fabr.; C. signifer, Herbst, and linm 'arva! found on the s
Size: 2275px × 1099px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectentomology, bookyear1
