rnv. sTTonr-wi^cKi) scavkncm-:!; i?Ki'rn,Ks. 375 



Tlii-(uii:li(iiit the State; l"rc(|Uciil. April (i -Inly 1!). Occurs mi 

 (Iccnyiiii;' I'liiiiLii .;iiid parrioii. 



XXXII. Stai'iivlixis liinii. 1758. (Or.. ";i kind of insect.") 



rsii.-illy Ijiri^c. i-(il)ust species, luiviiiy; tlu' middle coxal cavities 

 jilways se|)arati'd. sometimes very narrowly, by the mesosternam; 

 head as wide as ov wider than lliorax ; abdomen more or less taper- 

 in<r; color brown or dull black. Of the 22 species listed from the 

 Ignited States the rollowiui:- arc k-nown from oi- probably occur in 

 Indiana : 



KEY TO INDIANA SPECIES OF STAPHYLINUS. 



it. Head suborbionlar, its hind angles rounded ; sides of thorax behind the 

 middle sinuate; scutelluui pubescent, not velvety. 

 I). Constriction of neck not deeply impressed above; abdomen entirely 

 black, its segments beneath densely punctured and with golden 

 pubescence along their front margins. 717. badipes. 



hi). Constriction of neck deep above and with golden pubescence; abdo- 

 men beneath very sparsely punctate. erythroptebus. 

 (/(/. Head usually subtriaugular, suddenly narrowed behind, its hind angles 

 obtusely prominent; sides of thorax curved behind the middle, never 

 sinuate : scutellum velvety, 

 c. Thorax densely and regularly punctured over the entire surface, ex- 

 cept at times a smooth median line. 

 d. Front half of abdominal segments beneath densely and tinely punc- 

 tate and clothed with golden pubescence. 



e. Abdominal segments above with golden pubescence at base and 



sides ; elytra uniform reddish-brown. 718. vuij'inus. 



ee. Abdominal segments above with double row of dark velvety 

 spots at middle ; elytra brown with elongate fuscous spots. 



719. MACULOSUS. 



dd. Front half of abdominal segments beneath not or but little more 

 densely punctate than apical half and without golden pubes- 

 cence. 



f. Thorax subopaque. very densely punctate, the pubescence very 



evident. 

 g. Elytra brownish or jiiceous; tip of abdomen always paler. 

 //. Eyes normal; femora piceous; thorax without smooth me- 

 dian line. 720. mysticus. 

 hh. Eyes large, two-thirds the length of head ; femora pale yel- 

 lowish above, piceous beneath. femoratus. 

 .'///. Elytra black, sometimes with golden spot ; abdomen wholly 

 black. 

 /. Abdomen above with a double row of small velvety spots; 

 elytra entirely black, simply i)unctate. 721. tomentoscs. 

 //. Abdomen above without velvety sjxtts; elytra usually with 

 a large golden pubescent spot, roughly j)unctate. 



722. FOSSATOR. 



