DIVISION I. OTIORIIYXCIIINM'l AFTERS. 97 



LeConte in 1874, the name being derived from two Greek words 

 meaning "ear" and "snout." About 210 species have been de- 

 scribed from this country, mostly from the Pacific slope or south- 

 western states, only 52 being known from the region east of the 

 Mississippi River. Many of them are prettily ornamented with 



minute scales which resemble those on the 

 wings of butterflies. They occur for the 

 most part on or close to the ground, the 

 larvae of a number of species being destruc- 

 tive to the roots of various plants, while 

 others are harmful to vegetables and fruits. 

 Fig. 43. A, side pieces of Based u])on the size and shape of the 



mesosternum in Division I, 



a, episternum: b, epimeron; s j(] e pieces of the uieso- and metasterna, the 



c, margin of elytra. B, 



same of Division ii, a, epis- subfamily was divided by Horn into two 



ternum; (>, epimeron; c, 



margin of elytra. (After primary divisions as follows :* 



Bedel.) 



KEY TO DIVISIONS OF OTIORHYNCHINAE. 



a. Side pieces of mesosternum very unequal in size, the front one or 

 episternum large and in direct contact with the margin of elytra, 

 the epimeron small (Fig. 43, A.) ; sides piece of metasternum usually 

 very narrow, sometimes entirely concealed by the elytral margin, 

 its front end never broadly dilated on both sides. DIVISION I, p. 97. 

 aa. Side pieces of mesosternum diagonally divided and nearly equal in 

 size so that the episternum does not reach the margin of elytra, be- 

 ing shut off by the epimeron (Fig. 43, B) ; side piece of metaster- 

 num moderately wide, its front end dilated and projecting inward 

 between the epimeron of the mesosternum and the main body of the 

 metasternum. DIVISION II, p. 116. 



When the mesosternal epimera are intermediate in size there 

 may be difficulty in assigning the specimen correctly to Division 

 I or II. Horn appears to have referred most of these doubtful 

 cases to Division II. In the Biologia the contrary course is 

 adopted because such forms are usually apterous. Pantamonis 

 (including Aramigus and Phacepholis) will therefore be found 

 in Division II, although in the Biologia it is suggested that they 

 probably agree with the apterous group Sciaphilina, while Horn's 

 group Artipi would even fall into the tribe Epicaprini. 



Division I. OTIORHYNCHINJE AFTER.*;. 



In addition to the characters above given, our members of 

 this Division all have the antennae strongly elbowed ; mentum 



*A different classification of the subfamily has been recently published by Pierce 

 (1913, 372 426), based principally on characters pertaining to the ocular lobes and 

 antennal grooves or scrobes. A key to the genera following this system will he found 

 on page 135. The student should clnck his determination of the genus by using this 

 key in addition to the ones that follow, which are based upon those of Dr. Geo. H. Horn, 

 and, except as noted, agree also with the classification adopted by Sharp in the Biologia. 



