380 FAMILY \1. — STArilVl.lMD.E. 



The pinietni-c on th(^ ai)i(*al inai-giii in front of eaeh of these rows is 

 not I'onnted ;is heh)ngin«i- to llie tliscal or dorsal row, but to the mar- 

 ia:inal series. 



'I'hc males in most species have the front tai-si more or less di- 

 lated and rather ])u1)('S('ent beneath and the h'rmiiial ventral seg- 

 ment always moi*e or less emar<:iiiate. Fnv (•onveniene(» the genus 

 wa.s divided by Iloi-ii iido live uroups. all of which ai'e represf^nted 

 in Indiana. 



KEY TO GROUPS OF THE GENUS PHILONTHUS. 



(/. 'I'liora.x with distinct and regular rows of dorsal punctures. 



h. Front tarsi more or less dilated and silken pubescent beneath. 



c. Three punctures in each dorsal row. Group A. 



cc. Four i)unctures in each dorsal row. Group B. 



CCG. Five punctures in each dorsal row. Group U. 



?j&. Front tarsi filiform in both sexes and finely spinose beneath; dorsal 

 rows of imnctures regular but varying in number. Group I). 



(III. Thorax irrei^qilarly punctured, no distinct dorsal rows; fi'oiit tai\si di- 

 lated. Group E. 



Group A. 



In til is grou{) the front tarsi a.re dilated and the discal rows 

 contain l)\it three punctures each. The following species have ])een 

 taken or sliould occur in the Rtate : 



KEY TO INDIANA SPECIES OF GROXP A. 



(/. Thorax not narrowed in front, as wide as long; larger, G or more mm. 

 h. Elevated line at base of each of the first three dorsal segments of 

 abdomen in the form of a brace, -- — ^-^ ; abdomen above coarsely 

 punctured ; last ventral of male with a triangular notch. 



728. POLiTus. 

 hb. Basal lines of dorsal segments straight. 



c. Black or piceous, elytra more or less bronzed. 



(1. Elytra shining, closely punctured; thorax with a peculiar golden 



iridescence at base. sebicinus. 



d(I. Elytra rather sparsely and finely punctate; head oval, not wider 



than long; legs reddish-brown. 72!t. umbratilis. 



cc. Bicolored; black, thorax and base of abdomen red. 



730. L.ETULUS. 



11(1. Thorax narroweil in front; elevated line at base of dorsal segments 

 straight. 

 r. Elytra black, distinctly bmn/.ed, roughly punctate. asper. 



ec. Elytra dark or dull yellow, not bron/.ed, sinii)ly punctate. 



731. hepaticus. 



728 (2149). PiiiLONTHUS politus liinn.. Faun. Suec, 1740, 843. 



Elongate, rather robust. Black, shining; (»lytra bronzed, spar.sely pu- 

 bescent. Autennje piceous, reaching base of th(»rax, joints 5-10 broadei- 



