276 



fa:\ii LY viTi. — siij'iin).^. 



The antennsp fire 1 l-jointpd ntul iievci- clono-nlc, fho teriiiin;il joint 

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

 striate, the lateral margins reflexed. 



KEY TO INDIANA SPECIES OF SILPIIA. 



(I. Eyes iMi'st^. proiiiineiil : form eloneate; hind fonmra much stouter in 

 males. 539. shrinamensts. 



(Id. Eyes not prominent; form <>vnl; hind fenidra simihir in both sexes. 

 h. Lahrum broadly emarginate; third joint of antennaa as long or longer 

 than the second. 

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



cc. Thorax w itli black disk and reddish-yellow margin. 



541. NOVEBORACENSIS. 



bl). Labrum deeply emarginate; third joint of antennie shorter than sec- 

 ond ; form broadly oval. 542. Americana. 



*539 (1704). SiLPHA svRiNAMENsis Fab., Syst. Ent., 1798. 72. 



Moderately elongate, depressed. Black or i)iceous ; elytra with narrow 

 snhapical (irange red cross-bai', often broken into spots, sometimes entirely 

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

 ally broader behind, apex oblicpiely truncate; disk tiat with three distinct 

 costti?. Length IT) 24 mm. 



Throiighont the State; fi-equent. Hibernates as imago beneath 

 logs close to carrion. January 19-December 18. 



*540 (1708). SiLPHA iN.-EQUALis Fab., Spec. Ins., I, 1781, 87. 



Oval, slightly oblong, depressed. 

 Black, opaque. Thorax twice as 

 wide as long, narrowed in front, 

 base with a broad truncate lobe 

 at middle; elytra very little hnig- 

 er than wide, rounded at apex, 

 the disk willi three costte, the 

 outer and most distinct shorter 

 and terminating in a slight tuber- 

 i-le one-third from apex, r^engtli 

 10 14 mm. (Fig. 1.36.) 



Tlirougliout the State ; com- 

 mon. Hibernates in different 

 January 16-NovembGr 4. 



Fig. 136. a, larva; i/, saim', natural size; /, (/, h. maiKiiblc, 

 labium and maxilla (if larva; i, j, anal process and antenna,' of 

 same; m, one of the lateral proeo-^ses more highly magnifietl; 

 h. pupa; e. same, natural size; /, anal process of same; r, 

 beetle; /., front tarsus of same. (After Ililey.") 



stages; gregarious. 



