364 



FAMILY XI. — STAPHYLIXID^rE. 



KEY TO INDIANA SPECIES OE ALEOCHABA. 



a. Form rather broad and stout, rarely parallel ; mesosternum without 

 trace of carina at any point. 

 l>. Sixth dorsal segment of abdomen simple and subtruncate at apex in 

 both sexes. 



c. Antennae stout and spindle-shaped, not reaching base of thorax, the 

 joints strongly transverse ; thorax wholly black. 

 d. Elytra wholly black ; thorax finely and sparsely punctate ; length 

 5-7.5 mm. 693. lata. 



dd. Elytra in great part red; thorax coarsely and roughly punctate; 

 length 4 mm. 694. rubbtpes. 



cc. Antennae more slender, reaching middle of elytra, the joints less 

 transverse : thorax wholly black ; elytra red. the base and sides 

 narrowly black. 695. plelbalis. 



hh. Sixth dorsal segment of abdomen with a number of sharp, triangular 

 teeth at apex in male, simple in female ; thorax with sides dull red : 

 elytra in great part red. 696. lustbica. 



aa. Form more slender, linear, parallel: mesosternum carinate. 



e. Color in great part black or piceous ; first three dorsal segments of 

 abdomen impressed at base. 

 f. Thorax finely and evenly punctate over its entire surface ; elytra 

 wholly piceous. 697. sctjlpttventbis. 



ff. Thorax unevenly punctate, the punctures at middle of disk in two 

 uneven rows, the space between the rows smooth. 

 g. Dorsal segments of abdomen coarsely punctate, especially so in 

 the basal impressions; elytra each with a large, well defined, 

 rounded, dull yellow spot at inner angle near suture. 



698. bimaculata. 



gg. Dorsal segments of abdomen finely and more densely punctate : 

 elytra each indefinitely dull reddish at apex near suture. 



699. biplsttjlata. 



ee. Color pale reddish-brawn : first four dorsal segments of abdomen im- 

 pressed at base. 700. lecifega. 



693 (2053). Aleochaea lata Grvh.. Col. Micr. Brunsv.. 1802. 186. 



^ Very stout and broad. Deep black, shining. 



* ^ sparsely clothed with grayish pubescence; tarsi 



1 ^^isk | reddish-brown. Thorax two-thirds wider than 



W j8Bf f long, strongly rounded at base: sides feebly 



f^^^^^ curved, converging toward apex, disk minutely 



JMflHKt and sparsely punctate. Elytra slightly wider 



// wBimS BR \ :lboilt as as thorax : coarsely, closely 



|^^^pHE| \^ and roughly punctate. Abdomen at base as wide 



J^p^ ^gaM i ' as elytra, thence feebly but distinctly narrowed 



1 i^^^SS \ t0 a P es » marked with coarse, sparse, oval punc- 



f ' ; flMSlSIlf \ tures. Length 5-7.5 mm. (Fig. 156.) 



/ ^Bir^ \ Southern half of State, frequent. March 



24— September 25, Occurs beneath carrion. 



Fig. 156. Line shows natural size. 



(Original.) Mating April 29. 



