An associational study of Illinois sand prairie . und at the bottom of a hollow in thebunch-grass. Geophilous. The peculiar life history of the grouselocusts (they hibernate as adults) may possibly be an adaptationto conditions in the north, v/here the growing season is may also serve as a device for avoiding competition with themore dominant locusts, which are most active later in the species is not typical of bunch-grass. Tettix hancocki Morse. April 4,8. Pound in the bunch-grass, and with the preceding more abundant in the sand-prairie, though still not
An associational study of Illinois sand prairie . und at the bottom of a hollow in thebunch-grass. Geophilous. The peculiar life history of the grouselocusts (they hibernate as adults) may possibly be an adaptationto conditions in the north, v/here the growing season is may also serve as a device for avoiding competition with themore dominant locusts, which are most active later in the species is not typical of bunch-grass. Tettix hancocki Morse. April 4,8. Pound in the bunch-grass, and with the preceding more abundant in the sand-prairie, though still not a typicalspecies. Of northerly distribution. Llermiria bivittata 3erv. July 6, 19, October 8. Like the other members of the sub-family Tryxalinae,this species is phytoPhilous and flies strongly. Found in theDevils Hole usually in the longest and driest grass. It is pro-bably never found in bare sand. A typical bunch-grass species,of western distribution. Mermiria neome:-cicana Thorn. July 29. Habits and local distribution similar to those of the. 89 preceding species. It is more restricted to the western regions,is smaller, and not so commonly found in the Illinois sand regionsHarts record is the first for Illinois. Syrbula admirahilis Uhl- This species is quite common in the drier parts ofIllinois, and was not ta^ren at Havana probably for the reason thatit is abundant at a time of year when no collecting was done. lEr,Hart found it in the sand regions in the middle of xlugust, Eritettix sp. fundescribed). April 1, 8. Thought by Mr. Hart to be a new species. (Cf. Hart , 1907:231, 259). IJymphs common in bunch-grass at theDevil*3 Hole in spring. The eggs probably hatch very early inthe season, as those found v;ere too small to have wintered asnymphs. Ageneotettix deorum Scudder, July 19, October 8. Taken as early as July 6. The habits are more likethose of the Acridin<ae. as it depends less upon its v/ings andmore upon its power of leaping. It has also a geophilou
Size: 1332px × 1875px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookidassocia, booksubjecttheses
