FIELD BOOK OF INSECTS, 



Pronotum much narrowed in front but only feebly 

 so at base; elytra protuberant at base. L. vittata (head 

 prolonged behind the eyes; shining black but each elytron 

 with a yellow stripe, rarely wholly black) and pubera 

 (head not prolonged; entirely black). 



LAMIIN.E 



Adults of this subfamily (see p. 337) are, as a rule, not as 

 brightly colored as those of the preceding one, nor are 

 they as active by day as some of their relatives. The 

 larvae differ from the remainder of the Cerambycidse in that 

 they have no legs. Those with elytra about half the 

 length of the abdomen, and front tibia not grooved, belong 

 to the tribe Methini, which some authors place in the 

 Cerambycinae. 



1. Elytra about as long as the abdomen and with a 

 spine or protuberance near the scutellum; rarely more 

 than .25 in. long , 2. 



Elytra about as long as the abdomen but without 

 such a spine or protuberance; usually at least .25 in. long . 3. 



2. Frontal coxal cavities rounded. Tribe Cyrtinini. 

 Cyrtinus pygmceus is dark brown; antennae ringed with 

 yellow ; elytra with a transverse blotch of white pubescence 

 before the middle. It lives on oak, hickory, locust, and 

 box elder. 



Frontal cavities angulated. Tribe Psenocerini. Pseno- 

 cerus supernotatus is reddish-brown or blackish; scutellum, 

 a narrow oblique band about the middle of the elytra, 

 and a wider curved band, not reaching the suture, on apical 

 third, white. Larvae in stems of currant, gooseberry, 

 grape, and sometimes in apple twigs. 



3. First joint of the antennae with a scar-like structure near 

 the tip (except in Dorcaschema)\ body elongate, nearly 

 cylindrical; antennae as long as, in males much longer than, 

 the body; mostly large species Tribe Monohammini. 



(P- 353-) 



First joint of the antennae without the scar-like 

 structure 4. 



4. Tarsal claws (at least those on the front legs) arising 

 at opposite sides of the joint and separating widely 5. 



352 



