. Annual report of the Trustees of the State Museum of Natural History for the year ... Science; Museums. Report of the State Entomologist. 165 1 Description of the Larvae, When near maturity, they were seven-tenths of an inch long, of an orange-yellow color, with two rows upon the back (subdorsal) of twelve large irregularly rounded black spots, of which the middle ones are the larger, measuring in diameter about one- half the length of the segment. There is also a row on the side (stigmatal) of twelve smaller black spots, of which the two anterior ones are the largest, and semicircular in fo
. Annual report of the Trustees of the State Museum of Natural History for the year ... Science; Museums. Report of the State Entomologist. 165 1 Description of the Larvae, When near maturity, they were seven-tenths of an inch long, of an orange-yellow color, with two rows upon the back (subdorsal) of twelve large irregularly rounded black spots, of which the middle ones are the larger, measuring in diameter about one- half the length of the segment. There is also a row on the side (stigmatal) of twelve smaller black spots, of which the two anterior ones are the largest, and semicircular in form. Numerous short white hairs are given out from two trans- verse rows of tubercles on each segment, the longest of which about equals one- half the diameter of the body. The head is black superiorly and laterally, with a central black spot in front sur- rounded with brown. The tarsal hooks are brown. Figure 20, shows the larva in a dorsal and in a side view. On the twenty-fifth of June the larvse commenced to spin up in irregu- lar shaped cocoons, between the leaves on which they had been feeding. Ground had been given them in which to bury, if so inclined, but it was refused. By the twenty-seventh they had all made their cocoons. The perfect insects emerged July Fig. 20.— Larva of the poplar saw- fly, AULACOMEEUS LUTESCKNS. Description of the Saw-Fly. The following memoranda of the more prominent characters of the saw-fly are hastily drawn up, to serve the purpose of identification, until proper description can be made: Head, shining black, short, broad, not so wide as the thorax; antennae brown, the seven long joints are slender, tapering regularly to the last. Thorax black above, yellow laterally and beneath, except pos- teriorly where it is black. Abdomen yel- low, distinctly incised, short, flat, subo- void; legs yellow. Wings yellowish toward the base and particularly on the costa; Fig. 21.— The poplar saw-fly, the stigma large, conspicuous, with a black Aul
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