Ill 



Pierce ('04, pp. 173-188) has published a long list of bees found 

 visiting Solidago in Nebraska. He also mentions the following beetles : 

 Chaiiliognatlins pennsylvanicus, Nemognatha immaculata and N. 

 sparsa, Zonitis bilineata, Epicanta pennsylvanica, and Myodites soli- 

 daginis Pierce. Myodites is a rhipiphorid beetle which appears to lay 

 its eggs upon Solidago. Here the larva develops, and from here, by 

 attaching itself to different flower visitors, it is carried to their nests. 

 The nesting sites are often populated by several kinds of insects, a 

 social community, and thus the larva is thought to be carried in close 

 proximity to the bee Epinomia, upon which it is parasitic. This bee 

 does not visit Solidago, but frequents the sunflower (Hclianthns) , and 

 thus is only infested at the nest (see also Canadian Entomologist, Vol. 

 XXIV, 1902, p. 394). This is a good example of the complex rela- 

 tions existing among the animals of the prairie. Robertson ('94, p. 

 455) found Myodites fasciatits Say on Solidago at Carlinville, 111., and 

 he also lists (1. c. pp. 454-458) many species of insects which he found 

 on different species of goldenrod. As Epinomia is not known from 

 Illinois it is probable that some other bee is host for Myodites. 



7. Dry Prairie Grass Association 



The dry prairie grass association includes those animals which live 

 on the driest of the black soil prairie among the tall prairie grasses 

 Andropogon and Sporobolns. Upon the original prairie this was 

 probably a relatively stable habitat. 



About Charleston these grassy habitats occupied only very small 

 areas north of the town, at Station I, g (in part), and Station III, b 

 (in part). 



Representative animals of this community are the following: Argi- 

 ope aurantia, Brachyncmurus abdoininalis, CJirysopa oeitlata, Syrbula 

 adinirabilis, Encoptolopluis sordidus, Melanoplus differentialis, M. 

 femur-rubrum, Scudderia texensis, Orchelimum vulgare, Conocepha- 

 lits, GEcantluts nigricornis and CE. 4-pnnctatns, Euschistus variolarius, 

 Siuca diadema, Phymata fasciata, ChaiiliognatJius pcnnsylvaniciis, 

 Tctraopes tetraophtlialinus, Rhipiphorus diinidiatns, Exoprosopa fas- 

 ciata, Promachits vcrtcbratns, Boinbus pennsylvanicus, anricoinits, im- 

 patiens, frateriius, and separatus. Melissodcs bimaculata, and Mysine 

 sexcincta. 



Probably a number of insects breed in the roots and stems of An- 

 dropogon and Sporobolns, but none were secured. 



Although Elyinns has contributed many insect pests to cultivated 

 grains, it seems that Andropogon has not, if we except the chinch-bug 

 (Blissns leitcopterits Say). This insect was not related to Andrcpo- 



