No. 34-] HEMIPTERA OF CONNECTICUT: LYGAEIDAE. 725 



Heraeus Stal. 



H. plebejus Stal. 



Enum. Hemip., iv, 147, 1874. 



General coloring and shape much as in the preceding but con- 

 siderably smaller and less slender — about 5 mm. long. The base 

 of the dull black head is not drawn out into a long cylindrical neck 

 and the eyes are set midway between base and apex of head. 

 Basal segment of rostrum does not quite reach to base of head. 

 Basal segment of posterior tarsus only twice as long as second and 

 third segments together. Anteriorly this insect is quite pilose or 

 hairy. 



Also found sheltering under boards and other loose objects 

 lying on the ground and with similar predaceous habits. 



New Haven, 7 May, 191 1 (A. B. C). 



Ligyrocoris Stal. 

 Key to Species. 



1. Corium with a distinct post-median transverse fascia. Membrane 



without a median longitudinal pale streak but often pale at apex 2 

 Corium without a post-median transverse fascia ; costal margin 

 narrowly pale. Membrane with a pale streak through the middle 



depictus 



2. Anterior lobe of pronotum and fore femora sparsely setose. 



Diameter of pronotum at collar plainly less than at constriction 

 between the two lobes. Markings of corium castaneous or fer- 

 rugineous with the post-median fascia generally not quite reaching 

 edge of corium. Membrane commonly produced to end of abdo- 

 men ; veins for the most part pale diffusus 



Anterior lobe of pronotum and fore femora nearly or quite devoid 

 of setose hairs. Diameter of pronotum at collar subequal to 

 diameter at post-median constriction. Markings of corium 

 fuscous or piceous with the post-median fascia extended entirely 

 to edge of corium. Membrane most commonly not extended to 

 apex of abdomen ; apex triangularly pale sylvestris 



*L. depictus Barber. 



Jour. N. Y. Ent. Soc, xxix, 109, 1921. 



Closely related to diffusus Uhler, but readily distinguished by 

 the relatively longer antennae, dark castaneous hemelytra without 

 any evidence of the usual transverse fascia. Usually the mem- 

 brane is a little shorter than the abdomen and provided with a pale 

 streak down the middle. 



Portland, 9 Aug., 1913 (B. H. W.) ; Westport, 24 June, 1921 (W. E. B.). 

 L. diffusus (Uhler). (Figs. 166 and 167.) 



Proc. Bost. Soc. Nat. Hist, xiv, 101, 1871. 



Head, anterior lobe of pronotum, apical half of third and all of 

 fourth segment of antenna piceous black. Four fascia on the 

 posterior lobe of the pronotum and most of the inner part of the 

 hemelytra dark castaneous-brown. The costal margin pale 



