148 Cockroaches, Locusts, Grasshoppers, and Crickets 



thorax to the abdomen and more or less covers it. In some species the 

 pronotum actually extends beyond the tip of the abdomen. The head is 

 deeply set in the prothorax, the prosternum being expanded into a broad 

 border which nearly covers the mouth. As all the grouse-locusts are dark- 

 colored and without any conspicuous markings, and choose for habitat the 

 dark ground along streams and ponds, or swampy meadows, they are 



FIG. 194. FIG. i (,5. FIG. 196. 



FIG. 194. Nomotettix parvus. (After Lugger; natural size indicated by line.) 

 FIG. 195. Tettigidea lateralis. (After Lugger; natural size indicated by line.) 

 FIG. 196. Tettix granulatus, and pronota of two varieties. (After Lugger; natural size 

 indicated by line.) 



infrequently seen except by persistent students. They vary much in colora- 

 tion and slight markings, and harmonize thoroughly with the soil on which 

 they habitually live. They feed on lichens, moulds, germinating seeds, 



and sprouting grasses, and are said to eat 

 surface mud and muck containing or largely 

 consisting of decaying vegetable matter. The 

 eggs are laid in a pear-shaped mass in a 

 shallow burrow; in May and June the young 

 hatch in from sixteen to twenty-five days, 

 becoming mature in late fall, or sometimes 

 not until the following spring. The nymphs 

 and adults hibernate, becoming active again 

 early in spring. A common species is Tettix 

 granulatus (Fig. 196), slender, length about 

 inch, and with the narrow pointed pronotum 



FIG. 197. FIG. 198. 



FIG. 197. Tettix ornatus. (After 



Lugger; natural size indicated extending beyond the abdomen. This species 

 Fie 7 &'. '-Paratettix cucullatus. hibernates among rubbish and loose bark, but 



(After Lugger; natural size is more or less active on warm winter days. 



indicated by line.) It j s plentiful all through the rest of the year 



on its feeding-grounds. T. ornatus (Fig. 197) is a shorter, more robust 

 species, and is marked with black spots and indefinite yellow blotches as 



