TuE iUKt-FJ^li-.^ UK IjiGHTNIXG BUGS. b2j 



1570 ("4803). TvTTHOXYx ERYTiiocEniALrs Fab., Syst. Eleut, II, 1801, 105. 

 Oblong, compressed. Black, opaque, sparsely and finely pubescent; 

 front, occiput and under surface of head reddish-yelloTr. Thorax trans- 

 verse, truncate in front, broadl\- rounded behind, the sides short, inflexed. 

 Elytra one-half as long as abdomen, rounded at tip ; ^ylngs straight, extend- 

 ing along the dorsal surface of the abdomen. Length 4 mm. 



Marion and Posey counlics: srarce. May 17— July 3. Occurs 

 on leaves of various shrulis. 



Subfamily III. TELEPHORINAE. 



The memljers of this subfamily differ from those of the two pre- 

 ceding In- having the mouth organs more strongly developed; ej'es 

 smaller ; antennas more widely separated at base and by the straight 

 or nearly straight outline of the inner side of the metathoracic 

 episterna. Light organs are -nhoUj' lacking and the sexes are quite 

 similar in form and the development of the wings. The subfamily 

 is separated into three tribes, all of which are represented in In- 

 diana. 



KEY TO TEIBES OF TELEPHOBIN.E. 



a. Tarsi with joints three and four lobed beneath ; mentum short. 



Tribe I. Omethi^i, p. 825. 

 (III. Tarsi simple or with the fourth joint only lobed beneath. 



6. Mentum very long, wider in front ; prostemmn feebly developed, 

 separated by a membrane from the surrounding parts. 



Tribe II. Chatjuognathini, p. 826. 



66. Mentum small, quadrate, often semimembranous ; prosternum normal, 



fully developed. Tribe III. Teeephoeini, p. 828. 



Tribe I. OMETHIXI. 



This tribe comprises two ge'ieia of small oblong beetles pos- 

 sessing the characters of the tribe Td-iphoriin as set forth on a suc- 

 ceeding page, but ha-^dng the thiid and fourth joints of the tarsi 

 prolong( d or lobed beneath. The typical genus. Omrthrs, is repre- 

 sented in the ea-<tern Fnitcd Stati's by a single species. 0. margi- 

 natus Lee., which has heen taken l)y Dury near Cincinnati and 

 therefore probably occurs in the srjuthern third of the State. The 

 other genus is established for a new species, closely allied to 

 Oiiii thes, which has Ijeen taken in three of the southern counties. 



KEY' TO GEXERA OF THE TEIBE OilETHlXI. 



(1. Elytra with finely Impressed sti-i£e; elypeus truncate: antenme alike in 

 the sexes. < )metiii:s. 



aa. Elytra wholly without striie; elypeus broadly emarginate; antennte un- 

 like in the sexes. XVI. Blanchardia. 



