THE ANT-LOVING BEKTLKS. 331 



ala Lec., brownish-yellow, legs and antennae paler, pubescence 

 feeble, length 1.2 mm., is known from the Middle and Southern 

 States. 



XVII. EUPLECTUS Leach. 1817. (Gr., "good + fold.") 



Depressed, linear; abdomen with three basal segments equal in 

 length, the fourth prolonged, the border wide; ventrals six in fe- 

 male; seven, the last one carinate, in male. The following species 

 have been taken or may occur in the State : 



KEY TO INDIANA SPECIES OF EUPLECTUS. 



a. Head narrower than thorax ; first and second dorsal segments with 

 short cariun? ; elytra convex ; sutural lines deeply impressed, discal 

 ones half the length of elytron. 625. FOSSULATUS. 



ad. Head as wide as or wider than thorax. 



ft. Foveae of head widely distant, situated behind the middle ; body less 



slender, more convex. 



c. Head not wider than thorax ; shoulders wider than head or thorax. 

 <1. Sides of elytra nearly straight, divergent; sides of thorax broad- 

 ly and evenly curved; pubescence feeble; length 1.2 mm. 



SPINIFER. 



<lil. Sides of elytra curved; those of thorax sinuate behind middle; 

 length 1.5 mm. INTERRUPTUS. 



cc. Head wider than thorax. 



c. Shoulders wider than head, thorax narrower, as wide as long ; 



base of abdomen narrower than elytra. CONGENER. 



ec. Shoulders as wide as head; sides of elytra parallel; form linear, 



subdepressed ; head not punctured. UNEARIS. 



&&. Foveae of head smaller, much nearer together, situated in front of 



middle; head strongly punctured. 626. CONFLUENS. 



625 (9442). EUPLECTVS FOSSULATUS Brend.. Bull. Lab. Nat. Hist. Iowa, II. 



1891, 59. 



Dark brown, shining, sparsely pubescent. Head wider than long, de- 

 pressed in front ; occiput convex between the fove;e. Antennae as long as 

 head and thorax; joints three to eight very small, wider than long; ninth 

 and tenth each one-half wider than the one preceding; eleventh oval- 

 acuminate, longer than ninth and tenth together. Thorax wider than long; 

 disk minutely punctate and with a largo fusiform median sulcus, which ends 

 behind in a deep triangular fovea, the latter connected by a deep groove 

 with a large fovea each side. Elytra with liunieri high and prominent; 

 each with three basal punctures. Length 1.2 mm. 



Lawrence and Crawford counties; rare. May 11-May 27. 

 Taken by sifting. Casey places this under Thcsiastes but the two 

 basal segments of abdomen are distinctly carinate as described by 

 Brendel, 



