35 



Abdomen shiny, as long as thorax, oblong-ovoid; the second segment occupying 

 nearly one-third the whole surface; segments 4 to (i subeiiual, the third a little 

 shorter; fnnicle joints 2 to 5 subecjual; club nearly as long as tliree preceding joints; 

 joint 1 one-half longer than 2; pile sparse and short, more marked at inetanotal rtm- 

 bria and terminal joints of abdomen than elsewhere. ( -olor uniform black, except 

 for pronotal spot, tarsi, middle and hind femoro-tibial knees, front tib;e and apical 

 third of front femora, whic;h are light honey yellow. Stigmal club about as in I. 

 hageni and 1. afjmdidh, except that its tij) is more rounded instead of scjuarely truncate. 

 "Male. — Length, 2.5 nmi. ; expanse, 5 mm. Punctation rather finer than with 

 female; petiole as long as first abdominal joint, strongly rugose; tlagellum of anten- 

 nte long; pedicel not globose, slightly elongate; joint 1 of fnnicle longest, twice as 

 long as pedicel; joints 2, 8, 4, and 5 each a little shorter than its i)receding joint; 

 not so strongly pedicellate as with /. caUfornicum and /. hrumi, moderately arched 

 above with hairs arranged in two indefinite whorls; clul) separated into two sube(iual 

 pedicellate joints, giving the funicle the appearance of being 6-jointed instead of 

 5-jointed, as with bromi and mlifornieum; scape short, about as long as pedicel and 

 first funicle joint together; strongly expanded below tip. Coloration like that of 

 the female." (Howard, Tech. Ser. 2, Div. Ent., U. S. Dept. Agr., pp. 18, 14, 1896.) 



The earlier stages of development are unknown, but they probably 

 differ little from those of allied speeies. Quite likely the same natural 

 enemies prey upon it and the same repressive measure will apply to it 

 as with the preceding species. 



WEBSTER'S ISOSOMA. 



[IsosoiiKt irehsteri llowAvd. Fig. 12.) 



This is in all proba})ility a wheat-infesting species, as I found it in 

 a wheat field near Bloomington, III., May 9 and 11, 18S4, and about 

 Lafayette, Ind., also in fields of wheat, June 2 and i(>, 1885. I also 



Flfi. 12. — Inosania vrbiffrri: adult female — mueh onlarseil (from Howard). 



reared it from a pupa taken from a growing wheat })lant in the 

 Bloomington, 111., field May i^!>, but have not encountered it since 

 in my studies of these insects. Nothing is known of its life history 



