276 



FAMILY VIII. SIIJ'Hin.i;. 



The antennae are 11 -jointed and never elongate, the terminal joint 

 being flattened and oval at tip; elytra more or less costate, but not 

 striate, the lateral margins reflexed. 



KEY TO INUIAXA .SPECIES OF SIIJ?H.\. 



'. Eyes lai'oje. promiuent; form elongate; hind femora much stouter in 

 males. 539. subinamensis. 



r. Eyes imt prominent; form oval; hind femora similar in both sexes. 

 6. Labrnm l>r(inilly emarginnte; third .ioint of antennae as long or longer 

 than the second. ' 



c. Thorax entirely black. -540. in.equalis. 



cc. Thorax with black disk and reddish-yellow margin. 



541. NOVEBORACENSIS. 



66. Labrum deeply emarginate; third joint of antennt'e shorter than sec- 

 ond ; form broadly oval. 542. ameeicaxa. 



*539 (1704). SiLPiiA suKiNAMEX'sis Fab., Syst. Ent, ITOs, 72. 



Morter;itely el()ii,t;ate. depressed. Black or piceous; elytra with narrow 

 subapical orange red cross-bur. often broken into spots, sometimes entirely 

 wanting. Thorax transversely oval, broadly flattened behind. Elytra gradu- 

 ally broader behind, apex obliquely truncate; disk flat with three distinct 

 c(ist». Length 1.5-24 mm. 



Throughont tlie State; frequent. Hibernates as imago beneath 

 logs close to carrion. January 19-December IS. 



*540 (1708). SiLPHA iN^QUAEis Fab.. Si)ec. Ins., I. 17S1. S7. 



Oval, slightly oblong, depressed. 

 Black, opaque. Thorax twice as 

 wide as long, narrowed in front, 

 base w'ith a broad truncate lolie 

 at middle ; elytra very little long- 

 er than wide, rounded at apex, 

 the disk with three cost*, the 

 outer and most distinct shorter 

 and terminating in a slight tuber- 

 cle one-third from apex. Length 

 10-14 mm. (Fig. 136.) 



Throughout the State ; com- 

 mon. Hibernates in different 

 January 16-November 4. 



Fig. 136. a, larva; d, same, natural size; /, q, h, mandible, 

 labium and maxilla of larv.i; i, j, anal process and antennse of 

 same; m, one of the lateral processes more highly magnified; 

 h, pupi; e. same, natural size; /. :inal process of same; c, 

 beetle; k, front tarsus of same. (After Riley.) 



stage.s; gregarious. 



