412 fa:\iily xt. — siAi'iiyi^rNioj':. 



T!)4 (2415). hSTENiK M.AVKH Onsey, Key. Steii., ],S84, 1.35. 



Elongate, slender. Black, shining, yei-y finely and sparsely iiuljesceiit ; 

 legs dull yello\y, yery long and slender, tlie femora picenns at tips; palpi 

 pale yellow. Head two-thirds wider than long, siirfaoe between the eyes 

 deeply excayate, sjiaisely and une\'eidy pinictured and with a distinct me- 

 dian carina. Antenn.-e brownish, one-lialt l(jnger than width of head, llie 

 tliird joint one-third longer than fourth. Thorax subcylindrical, widesi 

 slightly behind the middle, one-sixth longer than wide, coarsely, densely 

 and roughly punctate. Elytra at base as wide as head, suture slightly 

 longer than thorax; very roughly, densely and coarsely punctate. Abdomen 

 much narrower than elytra, tapering from base to apex; coarsely and 

 closely punctate near base, finely and sparsely toward apex. Length .'3.2- 

 3.7 mm. 



Posey Coiuity ; rare. April 22. Taken from beneath mullein 

 leaves on a sandy hillside. A member of the Austroriparian fauna, 

 known from Florida, Texas and southern Illinois. 



Group IV. 



The members of this group differ from those of the preceding 

 only in having the fourth joint or tarsi distinctly bilobed beneath. 

 The abdomen is subcylindrical, usually tapering from the base and 

 without distinct side margins. The follo^viug species have been 

 taken or may occur in the State; 



KEY TO SPECIES OF GROUP IV. 



(/. Fourth and fifth abdominal segments wider than the first; length 4- 

 4.4 mm. advkxa. 



ail. Abdominal segments decreasing regularly in \yidth from tlie base, the 

 fourth not \vider than first. 

 b. Large species, 3.6 mm. or more in length, 

 c. Femora and tibiije not black throughout. 

 (/. Legs and antenn;e almost wliolly pale dull yellow-, the tips of hind 

 femora alone darker; head slightly broader than elytra. 



(Id. Legs black, the femora reddish-yellow at base. 

 a: Femora and tibiie wholly black, the tarsi pale, 

 e. Thorax equally Wide at base and apex. 

 cc. Thorax distinctly wider at apex than base. 

 hb. Smaller species, not exceeding 3.4 mm. in length. 



/. Legs pale yellow, the femora darker at tip; length 3-3.2 mm. 



T'JS. CAI.LOSUS. 



ff. Legs dark fuscous brown in color throughout. 



g. Thorax distinctly longer than ^vide. 



h. Elytra very slightly longer than thorax, their punctures very 



coarse; length 2.8-3.4 mm. 799. abcuias. 



hh. Elytra one-third longer than thorax, their punctures fine and 



close ; length .3-3. .1 mm. 800. punctatus. 



gg. Thorax as wide as long; length 2.8-3 mm. hubbakdi. 



