902 



FAMILY XLVTII. — SPHINIDIM. 



front margin of the eyes, the first joint large and stout, 3 to 7 slen- 

 der, small, the third as long as the two following, 8 to 10 forming 

 an oval, bifoliate club as long as the stem; thorax truncate before 

 and behind, Avith distinct side margins ; prosternal sutures deep for 

 the reception of the antenna?, which in repose are folded with the 

 club bent suddenly outward, behind the front leg ; front coxag trans- 

 verse, small, the cavities separated by the prosternum, narrowly 

 closed behind ; elytra entire, epipleura narrow ; abdomen with five 

 free ventral segments; front and middle tarsi 5-jointed, hind ones 

 4-jointed ; claws small, simple. 



The three species comprising the family represent as many dif- 

 ferent genera, and all probably occur in the State, though but one 

 has been taken. 



KEY TO GENERA OE SPHINDIDyE. 



a. Sides of thorax with six or seven teeth, its flanks not concave ; body 

 smooth. Odontosphindits. 

 aa. Sides of thorax entire. 



1). Body finely pubescent ; flanks of thorax slightly concave. 



I. Sphindus. 



1)1). Body broadly oval, clothed with erect hairs ; flanks of thorax deeply 

 concave. Eurysphindus. 



L. Sphindus Chev. 1833. (NL., a made word.) 



This genus, sufficiently characterized above, is represented by the 

 single species: 



1714 (5409). Sphindus americanus Lee, New Sp. N. Anier. Col., I, 1866, 

 104. 



Oblong, convex. Piceous-black, the elytra often dark brown; antenna? 

 and legs reddish-brown. Thorax one-half wider than long, sides strongly 

 rounded, disk convex, finely and rather closely punctate. Elytral striae 

 feebly impressed, coarsely but shallowly punctate; intervals finely punctu- 

 late; uinbone prominent. Length 2-2.5 mm. 



Marshall and Marion counties; rare. May 20-June 7. Taken 

 from fungus on beech and sifted from decaying linn stump. Prob- 

 ably occurs throughout the State. 



The other two species of the family are Eurysphindus hirtus 

 Lee, 1.6 mm. in length, blackish-brown, pubescent with erect hairs, 

 and OdoniospMndus denticollis Lee, elongate, subcylindrical, 

 brown, and 2.7 mm. long. Both were described from near Detroit 

 and have been recorded by Dury from Cincinnati, 



