104 
The Purple Cabbage Worm ( Orobena rimosalis, Guenee.) 
This species continues abundant in Southern Illinois, doing its 
principal damage in September. It is also found injuring late cab¬ 
bages early in October. Many ol the larvae collected in Union county 
during the latter part of September, were found parasitized. Several 
masses of the white silken cocoons of hymenopterous parasites were 
found upon shriveled remains of the cateipillais. This paiasite, 
belonging to the group of Microgasters, is apparently new, and a 
description is herewith given. 
Apanteles orobence , n. sp. Length, two and a half millimeters. 
Head, thorax and abdomen black; first two segments of the last 
with the edges and under surface paler; antennse black throughout, 
as are also the trochanters and coxae of all the legs; femora and 
tibiae all yellow; tips of posterior femora dusky above; tarsi more 
or less dusky, especially those of the posterior legs. The wings are 
hyaline; the stigma and veins yellowish-brown. The mesothorax 
and scutellum are thickly set with fine punctures, largest on the 
latter; metathorax coarsely and closely punctured, with a delicate 
median carina; the first two segments of the abdomen opaque and 
closely punctured above, the remainder smooth and shining. Hie 
first cubital cell angular externally, and extending beyond the middle 
of the stigma; posterior discoidal cell widely open. Described from 
twelve specimens, male and female, bred from the cocoon. 
Colaspis brunnea, Fab., was found in great numbers on clover in 
fields at Waterman, Ill., in July, 1881. 
Diabrotica 12-guttata , Oliv., was seen feeding upon the pollen of 
corn in the field, August 1, 1882, and also upon blossoms of red 
clover during the same month. 
Macrobosis unicolor, Kirby, is reported by Mr. Webster to feed upon 
the leaves of red clover. 
Epicauta vittata, Fab., was seen by Mr. Webster, eating the fruit 
of the tomato in 1881, and eating silk from ears of corn in the 
fields in August, 1882. 
Mr. Gfarman observed Epicauta cinerea, Forst, upon tomato plants 
in Southern Illinois, doing serious damage by eating the leaves and 
tender branches, a dozen sometimes occurring on a single branchlet. 
Epicauta pennsylvanica, DeG., was also seen by Mr. Webster, 
feeding upon the silk of corn in August. 
Epiccerus imbricatus, Say, was found feeding on the blossoms of 
red clover at Normal in June, 1882. 
Flata conica , Say, Ormenis pruinosa, Say, and Hydnocera pallipen - 
nis , Say, were all found abundant upon osage orange in August, 
1882. 
Lygus lineolaris, Beauv., was extremely abundant in fields of corn, 
sucking the sap from the tassels, in July. 
