I'HE I'EEDACKOrs DIVTNG BEli'llJiS. 20!) 



Tribe II. LACCOPHILINI. 



This tribe is represented in the United States by the singk 

 ijeiius. 



III. L.VGCdPHiLUS Leai'h. 1817. (Ur., "a pool + loving.") 



Small and very active beetles, ovate and depressed in form, and 

 usually spotted in color ; thorax without side margins ; scutellum 

 almost concealed: prosternal .spine narrow, acuminate and much 

 compressed; hind coxse expanded into broad processes which are 

 arched in front and almost completely conceal the coxal cavities; 

 hind legs highly developed. The males have the four front tarsi 

 dilated and clothed with spongy hairs lieneath. The plates of the 

 hind eoxfE have a ridge of fine lines, beginning near the middle at 

 the insertion of the femora and extending outward and backward. 

 These ridges, ^\'ith their file-like arrangement, when rubbed by the 

 hind femora, form a musical or stridulating organ. Four species 

 have been taken in Indiana. 



KEY TO INDI.\.NA SPECIES OF LACfOPHILT S. 



a. Elytra without distinct yellow cross-bars; male with a fuxal file. 

 6. Elytra blackish, with one or moi'e greenish-yellow spots. 



e. Larger, G mm. ; elytra with the margin, four submarginal spots and 

 three basal lines greenish-yellow. .39(1. ii,\cuLosrs. 



cc. Smaller, 4.5 mm. ; elytra dark reddish-brown, with the subhumeral 

 mark of inacuJosus present, the others confused. 



P,'n. PROXIMUS. , 



1)1]. Elytra dull yellow, with a distmct blackish bar behind the middle. 



.398. FASOIATUS. 



aa. Elytra black with two cross-bars and a\iex yellowish; size less than 

 5 mm. ; males without a coxal file. :;fi9. undatus. 



HUV, (■]242). LArcopiiins MACULOStiS Say. Trans. Amer. Phil. Soc, II. 

 182.3. 100; ibid. II, 514. 

 Ovate. Head, thoiax and under parts reddish-yellow. Elytra as men- 

 tioned in key, the submarginal J■ello^vish spots being In position, subhumeral, 

 median, postmedian and subapical, the second and fourth usually the larger. 

 The yellow basal markings vary much in size and distinctness. Thorax 

 very short, four times wider than loiij.'. its surface, as well as that of elytra, 

 very finely reticulate. Elytra obliquely truncate at apex, with one or two 

 li-regular wjws of minute punctures. Length G mm. 



'I'luMiiuliiiiil Ibe Slatc' ; commoii. .Mai-cli 1(i--()clober 2:i. Proli- 

 ably hibernates. 



