82 



FAMILY IT. OAKABTRK. 



?*>** ^>^ 



Fig. 53. (Original.) 



*101 (450). TACHYS FLAVICAUDA Say, Trans. Arner. 

 Phil. Soc., II, 1823, 87; ibid. II, 502. 



Rather broad, feebly convex. Dark piceous or near- 

 ly black, the apical third of elytra yellowish ; anten- 

 na? and legs reddish-yellow. Thorax subquadrate, one- 

 half wider than long ; sides feebly curved, base trun- 

 cate, a little wider than apex ; hind angles rectangu- 

 lar, not cariuate. Elytra one-half wider than thorax, 

 the five inner stria? moderately distinct. Length 1.5- 

 1.8 mm. (Fig. 53.) 



Throughout the State; frequent. January 6-December 25. 

 Occurs beneath bark, especially that of elm and butternut. 



*102 (449). TACHYS NANUS Gyll., Ins. Suec., II, 1810, 30. 



Elongate, depressed. Black, shining, very finely alutaceous; antenna? 

 piceous, the basal joints and tibia? and tarsi more or less reddish-brown. 

 Thorax subquadrate, about one-half wider than long, not wider at base 

 than apex ; sides rounded in front, slightly sinuate near base, hind angles 

 rectangular, not or but feebly carinate. Elytra subparallel, slightly wider 

 than thorax, the four or five inner strise distinct, without punctures. 

 Length 2.2-3 mm. 



Throughout the State; common. January 10-November 20. 

 Occurs beneath bark and leaves. 



103 (462). TACHYS GRANARIUS Dej., Spec., V, 1831, 01. 



Robust, convex. Color variable, usually piceous or nearly black ; elytra 

 often more or less brownish and somewhat translucent, sometimes reddish- 

 brown, very shining ; antenna? fuscous, the basal joints and legs dull yel- 

 low. Thorax subquadrate, one-half wider than long ; base truncate, hind 

 angles subrectangular with a short, fine carina ; transverse impression near 

 base deep, finely punctulate. Elytra one-third wider than thorax, dorsal 

 punctures small. Length 1.7-2 mm. 



Putnam County ; scarce. March 5-October 10. Occurs beneath 

 stones and leaves on damp, wooded hillsides. 



*104 (4G1). TACHYS INCURVUS Say, Trans. Amer. Phil. Soc., IV, 1834, 440; 



ibid. II, 554. 



Elongate, moderately convex. Dark reddish-brown to nearly black, 

 shining; the elytra with an indistinct pale yellow stripe reaching from 

 humerus nearly to apex, this often interrupted at middle; antenna' fuscous, 

 the basal joints and legs dull yellow. Thorax quadrate, one-half wider 

 than long; transverse impression near base, deep, finely punctate; hind 

 angles rectangular, with a short carina. Elytra distinctly wider than 

 thorax, with only a moderately deep sutural stria, a second faint one often 

 visible. Length 1.7-2.5 mm. 



Throinrhnul. the State; common. .January 21-0rt,<>lx>r 21. Oc- 

 curs beneath rubbish in open Avoodland and often in nests of ants. 



