368 



FAMILY XI. STAPHYLINIDJE. 



KEY TO INDIANA GENERA OF QUEDIINI. 



(/, Antennae elbowed, the first joint elongate; front tarsal claws larger 

 than the others. XXVII. Acylopholius. 



aa. Antennae straight, hrst joint not elongate; tarsal claws similar on all 

 the feet. 



b. Palpi awl-shaped; length less than 5 mm. XXVIII. Heterothops. 

 bb. Palpi filiform; length more than 5 mm. XXIX. Quedius. 



XXVII. Acylophorus Nordm. 1837. (Gr., ' £ gland + bearing.") 



Rather small, spindle-shaped species having the head oval, with 

 fonr coarser pnnctnres each side, two over each eye and two behind 

 these ; antennae reaching base of thorax, the second joint longer than 

 third ; thorax broader than long, narrowed in front, disk with two 

 punctures each side of middle in front, one at front margin, the 

 other one-third behind it. 



701 (2091). Acylophorus flavicollis Sachse., Stettin Zeits.. 1852, 143. 

 Black, shining, elytra and ahdomen sparsely pubescent ; thorax and legs 



reddish-yellow ; antennae dusky, the basal joint paler. Head behind the 

 eyes with numerous fine punctures and short hairs. Elytra together slightly 

 wider than long, coarsely, rather closely and very roughly punctate. Ab- 

 domen as wide at base as elytra, thence strongly tapering to apex, coarsely 

 and rather closely punctate. Length 5-5.5 mm. 



Kosciusko and Putnam counties; scarce. April 17-October IT. 

 Occur beneath vegetable debris close to water. The fifth dorsal ab- 

 dominal segment is often pale at apex.- 



702 (2092). Acylophorus pronus Erichs., Gen. Spec. Staph., 1840, 521. 

 Black, shining; antenna? piceous, usually paler at base; legs dull yel- 

 low, varying to piceous. Otherwise as in flavicollis. Length 4.5-6 mm. 



Throughout the State ; frequent. March 20-October 31. 



XXVIII. Heterothops Steph, 1831. ( Gr., "different + eye. ") 



Small spindle-shaped species having the head with three or four 

 coarse punctures, the front one nearly at middle of inner margin of 

 eye; thorax as in Acylophorus, the disk with two punctures on 

 middle of apical half and two smaller ones on apical margin. Males 

 with the sixth abdominal segment emarginate. Two of the three 

 species have been taken in Indiana. 



KEY TO INDIANA SPECIES OF HETEROTHOPS. 



a. Third joint of antennae as long as second, eleventh not longer than ninth 

 and tenth together; head with four punctures each side; length 3.5- 

 4.5 mm. TO -3. fusculus. 



