182 FAMILY V. TETRIGID.E. THE GROUSE LOCUSTS. 



77. TETTIGIDEA LATERALIS (Say), 1824, 10. Black-sided Grouse Locust. 



Rather robust; pronotum in long form strongly attenuate behind, es- 

 pecially so in males. Color above grayish, light brown or fuscous, sides 

 bl-irkish; tegmina with a small white spot near tips, hind femora often 

 with pale spots or bands; male with lower part of face, mouth parts and 

 lower third of lateral lobes of pronotum ivory white. Vertex about as 

 wide as one of the eyes, male, one-half wider, female, feebly projecting 

 in front of eyes, its sides strongly concave; median carina distinct but 

 low on front half. Pronotum granulate and with distinct branching 

 lengthwise rugae; its process in long form slightly surpassing tips of hind 

 femora, in short one reaching only to tip of abdomen; median carina low 

 but distinct throughout; humeral angles scarcely evident; lateral lobes 

 distinctly bisinuate behind, the tegminal sinus deeper and more narrow 

 than the lower one, the lobe between them short, rounded, the lower pos- 

 terior lobe acute. Tegmina elongate, their tips obliquely rounded; wings 

 in long form surpassing the tip of pronotum 1 to 2 mm., in short one not 

 reaching it. Femora with margins entire, hind ones rather stout, their 

 outer surface granulate and with faint oblique ridges. Length of body, 



<?, 1013, $, 1217; of pronotum, $, 910, $, 1014; of hind femora, 



$, 56, 5, 6.5 7.5 mm. (Fig. 66.) 



Southern half of Indiana, common, April December; not rec- 

 ognized north of Marion and Putnam counties. Recorded also 

 from numerous localities throughout Florida and prob- 

 ably the most abundant grouse locust in the State, 

 though apparently less common in its southern third. 

 All specimens taken by me in Florida or recorded 

 from there are of the long form, as are the great ma- 

 jority of those seen from Indiana, and R. & H. (1910, 

 151) state that 90.0 per cent, of the specimens in their 

 extensive collections are of this form, but that mate- 

 rial taken near streams or in swampy places in heavy 

 Fig 66 Fe f r ^st shoAv a strong predominance of the abbreviate 



male X 2 - 2 - form 

 (After L u g - 



s er - ) About Dunedin T. latcralis occurs in numbers 



along the sandy margins of ponds and lakes, usually in company 

 with Nomotettix cristatus florid an us and Apotctti.r ritf/osiis, and 

 also less commonly in open places in pine woods, while in Indiana 

 its habitats are the same as those of its variety jHirripeiinis, de- 

 scribed below. Caudell (1905, 210) states that a specimen taken 

 by him at Sanford, Fla., "jumped into a shallow pool of water 

 in its efforts to escape, and when I attempted to pick it up it de- 

 liberately dove to a blade of grass fully an inch below the surface 

 of the water, where it remained grasping the stem with its legs 

 for several seconds." 



