548 



FAMILY XVIII. — EROTYLIM. 



-1046 (3226). Tkitoma biguttata Say, Journ. Phil. Acad. Nat. Sci., IV, 

 1825, 89 ; ibid. II, 229. 



Resembles humeralis, but more narrowly oval. Entirely pale beneath 

 and with the reddish-yellow spot of elytra larger, triangular, reaching near- 

 ly from scutellum to humerus. Elytra more deeply striate, the punctures 

 of intervals more distinct, especially at base. Length 3-4 mm. 



Lake, Vigo, Lawrence and Crawford counties; common locally 

 on decaying Agaricus. Hibernates. March 9-December 25. 



1047 (3227). Tritoma mimetica Crotch, Trans. Anier. Ent. Soc, IV, 1873, 

 355. 



Rather broadly ovate. Head, thorax and club of antennae black ; elytra 

 pale red, with the outer margins nearly to humeral angle and apex, black; 

 beneath black, legs, sides of abdomen and sternum, reddish. Head and tho- 

 rax finely but distinctly punctate. Elytra striate with rows of fine punc- 

 tures; intervals rather thickly and finely punctulate. Length 4-4.3 mm. 



Vigo, Marion and Posey counties ; scarce. April 18-October 11. 

 Resembles Mycotretus pulchra but readily distinguished by the 

 larger size and red scutellum. 



*104S (3234). Tritoma festiva Lac, Monog. des Erot., 1842, 208. 



Elongate-oblong, subconvex. Black ; thorax, scutellum and a broad 

 median band on elytra reddish-yellow ; antennae black ; beneath reddish- 

 yellow. Head and thorax sparsely but distinctly punctured. Elytra with 

 rows of rather deep punctures which do not extend onto the humeral re- 

 gion. Length 5-6 mm. 



A handsome and well marked species of southern range, taken 

 only in Marion, Vigo and Knox counties : scarce. April 18-Deeem- 

 ber 10. Hibernates. 



1049 (3230). Tritoma angulata Say, Journ. Phil. Acad. Nat. Sci., V, 1S26, 

 300; ibid. II, 345. 



Rather narrowly ovate, convex. Head dark piceous-red ; thorax and 

 elytra uniform black ; beneath piceous, the legs, antennae and palpi brown- 

 ish-yellow. Head and thorax finely and rather closely punctate. Elytra 

 with rows of fine, close punctures ; intervals finely and sparingly punctu- 

 late. Length 3-4 mm. 



Vigo and Lawrence counties; scarce. Taken on decaying fleshy 

 fungi (Boleti). July 2-July 29. 



*1050 (3231). Tritoma unicolor Say, 7oc. cit. 



Broadly ovate. Entirely black, somewhat shining. Head closely, tho- 

 rax more coarsely and deeply, punctate. Elytra with rows of distinct punc- 

 tures which become finer toward the tips ; intervals smooth. Length 4-5 mm. 



Frequent throughout the State. March 7-October 9. Probably 

 hibernates. Occurs beneath logs in early spring; in fleshy fungi in 

 summer. 



