362 



FAMILY XI. ST APH YLIXIDiE . 



KEY TO INDIANA SPECIES OF OXYPODA. 



a. Larger. 3-3.2 mm. ; dark brown, elytra and legs paler. 



688. sagtjlata. 



aa. Smaller, not over 2.5 mm. 



1). Thorax subparallel and curved at the sides, the apex almost as wide 

 as the base, the latter as wide as the base of elytra. 



c. Dull brownish-yellow ; abdomen piceous, pale at tip. distinctly 



tapering from base to apex. 689. amica. 



cc. Reddish-brown ; abdomen with only the fourth and fifth dorsal seg- 

 ments piceous. its sides nearly parallel. 690. paltsteis. 

 T)l). Thorax subcorneal or with the apex distinctly narrower than base. 



d. Body rather slender ; abdomen feebly tapering from base to apex ; 



color chestnut brown. 691. obliqtja. 



dd. Body linear ; abdomen straight and nearly parallel ; color brownish- 

 yellow. 692. PEKEXTLIS. 



68S (2062). Oxypoda sagulata Erich.. Gen. Sp. Staph.. 1840, 146. 



Elongate, rather robust. Dark brown to piceous, sparsely clothed with 

 fine yellowish hairs ; elytra reddish-brown : legs and basal joints of antenna: 

 pale yellow. Antennae reaching base of thorax, the second joint slightly 

 longer than third. Thorax one-half wider than long, the base as broad as 

 the elytra, sides moderately curved : angles rounded, the front ones de- 

 Hexed ; disk finely and rather closely punctate. Elytra one-third longer 

 than thorax, more coarsely and densely punctate. Abdomen at base slightly 

 narrower than elytra, distinctly tapering behind the middle, densely punc- 

 tate, the first two segments impressed at base. Length 3—3.2 mm. 



Throughout the State: scarce. May 13-Oetober 31. Taken by 

 sifting. 



689 f ). Oxypoda amica Casey. Trans. Acad. Sci. St. L.. XYT. 1906, 312. 



Elongate, subfusiform. Dull brownish-yellow, clothed with rather long, 

 shaggy pubescence : head and abdomen piceous. the latter pale at tip : an- 

 tenna? fuscous, the basal joints and legs pale. Antennas reaching to basal 

 third of elytra, the second joint one-third longer than third. Thorax three- 

 fourths wider than long, sides strongly curved, surface, as well as that of 

 elytra and abdomen, very finely and rather closely punctate. Elytra about 

 two-fifths longer than thorax. Abdomen at base one-third narrower than 

 elytra, thence feebly tapering to apex, the first three dorsal segments deeply 

 impressed at base. Length 2-2.2 mm. 



Throughout the State: one of the most common members of the 

 subfamily. January 18-Deeember 8. Taken by sifting vegetable 

 debris in low. moist woods. Hibernates beneath mullein leaves, bot- 

 tom rails of fences and other cover. 



690 C ). Oxypoda palusteis sp. nov. 



Rather stout, subfusiform. Dark reddish-brown, shining, sparsely and 

 finely pubescent: head, elytra and fourth and fifth dorsal segments of ab- 

 domen piceous. Antenna? reaching middle of elytra, second and third joints 



