THE OIL AND BLISTER BEETLES. 



1355 



KEY TO INDIANA SPECIES OF NEMOGNATHA. 



a. Palpi rather short, not very slender, hairy; spurs of hind tibi* equal 

 in ^ize rather slender. . , 



i. E^ra finely and very dense* tured; thorax no, vnder behm 



o. Thorax quadrate; maxilhe two-thirds or more the length ot body, 

 d. Thorax densely punctured; color variable. „.,,,.,'.'...,, 

 W. Thorax sparsely punctured; elytra either whoUyyel J^ortamn 

 ish-yellow, with a black stripe. 25 3 ™ N " L " A ; 



eo Thorax nearly oval, yellow, with black spots finely and rathe, 

 snarsely punctured ; maxillae half the length ot body. 



Spdistly yu. 2gl4 _ nemORENSIS. 



M Elytra less finely and less densely punctured, yellow, with a wide 

 black stripe; thorax yellow, rather sparsely punctured. 



aa Palpi longer and more slender, not hairy but only pubescent ; maxilla- 

 e s than half the length of body: spines of bind tibia, broad, obtuse. 

 , " rather finely and densely punctured; e.ytr* . wholly = e 

 yellow or rarely with a broad black strip* 2515 ™™ ER £ 



ee . Thorax very coarsely, sparsely and irregularly 

 low or dark brown. 

 If: piezata Fab., male with fourth ventral broadly sulcate fifth 

 impressed, length 7-11 mm., is said to occur from the "Atlantic Re- 

 gions to Colorado and Montana." 



2513 (8032). Nemognatha pt.nctui.ata Lee, Proc. Phil. Acad. Nat. Set. 

 VI, 1853, 347. 



Elongate-oblong. Orange yellow, sparsely clothed with f^*™V 

 antenna, (except at base), tarsi and greater part of under surface Mackrsh. 

 Head finely and densely punctate, with front flat; 



rax one-third wider than long, sides almost straight, disk sparsely, coarseij 

 and Marly punctate. Elytra minutely and very densely punctured. 

 Length 8-11 mm. 



Jackson County; rare. July 16. The form described is var. 

 flavipennk TJhler. In the typical form the upper surface is brown- 

 ish-yellow, the elytra with a black stripe. 



2514 ( 8034). Nemognatha NEMOisENSis Hente., Trans. Anier. Phil. Soc, 

 III, 1S30, 25S. 



Elongate-oblong. Black, rather thickly clothed with short, erect black 

 bairs mandibles, middle of head and thorax yellow, the latter usually with 

 two black spots on basal half which are often united. Maxd.a one-halt 

 the length of body. Length 6.5-7.5 mm. 



Crawford County ; rare. June 2-June 28. 



N cribaria Lee, male with fourth and fifth ventral* impressed 

 and with median tufts of black hairs, length 6.5-8.5 mm., ranges 

 from "the Middle and Western States to New Mexico. ' 



