CLASSIFIED HABITATS OF VARIOUS SPECIES OF 

 ORTHOPTERA BASED ON THEIR EGG-LAYING 

 SITES, TO SHOW THEIR RELATION TO PLANT 

 FORJ^IATIONS IN GENERAL. ^ 



First Section: Ground Habitats. 



Geodytes. 



The species belonging to this series are ground inhabiting. 

 With their ovipositors they are enabled to prepare a place in 

 which they lay their eggs, one at a time, to form masses in the 

 ground humus, loam, sand, old decayed wood (locusts and 

 crickets), or in caves (cave camel cricket). Those without 

 conspicuous ovipositors lay their eggs either in the form of 

 ootheca (cockroaches) in or under old wood, bark, stones, 

 or in masses in underground galleries (mole and burrowing 

 crickets), or drop a single egg at a time to the ground (walking- 

 stick). One of the distinguishing features of the geodytes 

 is that they rarely, or never, lay their eggs on live or growing 

 vegetation. They are divisible into eleven series as follows: 



I. Wet Ground Inhabiting Species: Hygrogeocolous. 



1. Granulated Grouse Locust Tetrix gramdata (Kirby) (see 

 illustration, page -il'^). Swampy tracts*, bogs, river bottoms, 

 and boggy woods; 9a, 116, 19, 'i'i, and 23. 



2. Obscure Grouse Locust r^-^r/x oftiTj/ra (Hancock). Swamp 

 forest; 23. 



3. Indiana Grouse Locust Xeotetiix hancocki (Blatchley). 

 Frequenting swamps; 22/. 



4. Hooded Grouse Locust Paratettix cucullafus (Burm.). 

 Semiaquatic, nearly always frequenting margins of lakes, 

 ponds, and streams; 3a, 4a, and 11a. 



^ The Orthoptera represented are those principally found in Illinois, Michigan, 

 and Indiana, but they may serve as well for many of the adjoining States. These 

 habitats are presented as a working basis for di\-iding the various species into 

 series. The numbers following each species refer to their defined habitats 

 given on pages 430-433. 



419 



