EARLY SUMMER 



3 SPIDER (MAN60RA GlBBEROSA) 



NUCLEUS OF PERMANENT RESIDENTS 



BLUE JAY (CYANocrrm CRISTATA) ^= WOODS SNAIL CCARYCMIUM EXIGUUM) 



WHITE-FOOTED MOUSE otmnisciu LFUWWS NovtvowcrNSis) MiRiO BUG (PICYPHUS GRACILENTUJ PAIUH.) 



FOX SQUIRREL (SCIURUS NIGER RURVENTER) LEAF-HOPPER (ERYTHRONEURA OBLIQUA SAY) 



SEASON/US 



LATE SUMMER 



ssaBEETLE (BRACYPTERUS URTICAE) 



^a. WALKING STICK INSECT (C> pEMOMT^ 

 =SPIDER (MANGORA GlBBEROSA) 

 imMlTE (PARA5ITU5 SR ) 



AUTUMN WINTER 



' SPIDER (XYSTICUS SP.) AA^FLEA BEETLE (EPITRIX FU5CULA) 



KtwnirrnFFTl c(PHYTOOMUS JUNCO.SNOW&IRD UNNCO MrEMAUS) 

 ISNOUT BEETLE 1 Nl6RlRoSrR ,s) 



EARLY SPRING 



*++MMlTE (PARASITUS 5P.) 

 *A*FLEA BEETLE (EPITRIX FUSCULA) 

 JUNCOUUNCO HYEMALIS) 

 e^toSPlPER (GONGYIIDIEUUM PALUDUM) 

 TREE SPARROW UPlZaiA MflflTlCOLA) 



M1ITE(PARA5,TUSSP.) 



LATE SPRING 



> BEETLE (GLYPTINA 5PURIA) 

 lSPlDER<PMRUROUTHUS PAIUCTRK) 

 tMITE (PARAS 1TUSSP.) 



FLEA BEETLEtPHYUOTRETA JlNUAW , 



fTREESRARROW(SPIZEUAMONTICOLA) 

 "BEETLE (TTIEFUNUS VELOX HA1DJ 



FIG. 1. An animal clock of the seasons in an Illinois Woodland. 

 (After V. G. Smith.) 



53 



