THE GROUND BEETLES. 



181 



aa. Elytra very slightly or not at all sinuate at tip ; abdomen with accessory 

 setae on sides, arising from distinct punctures ; mentum tooth entirely 

 wanting ; body oblong-oval ; color uniform pale brownish-yellow. 



339. TESTACEUS. 



330 (3079). Hakpalus ebraticus Say, Trans. Amer. Phil. Soc, II, 1823, 



27 ; ibid. II, 455. 



Elongate, parallel. Reddish-brown above ; under surface and legs red- 

 dish-yellow. Thorax slightly broader than long, basal impressions broad, 

 shallow, rather closely and finely punctate; hind angles obtuse, slightly 

 rounded. Elytra very deeply sinuate at tip, outer angle of sinuation acute 

 and toothed in female ; striae deep ; intervals convex. Length 14.5-18 mm. 



Throughout the State in sandy localities; frequent. April 10- 

 October 25. Sometimes taken at electric light. 



H. viridicenus Beauv., has been taken by Wolcott and others 

 along the beach of Lake Michigan at Chicago. It undoubtedly oc- 

 curs in Lake and Porter counties, but no authentic Indiana speci= 

 men is at hand. 



331 (1083). Harp alus caliginosus Fab., Syst. EL. I, 1801, 188. 

 Elongate, robust. Black; antennae and tarsi reddish-brown. Thorax 



broader than long, as broad at base as elytra, narrower in front ; basal 

 impressions broadr shallow, densely and finely rugose-punctate; hind angles 

 rectangular. Elytra deeply striate ; intervals moderately convex. Length 

 21-25 mm. (Fig. 79.) 



One of the most common of our large beetles. Occurs every- 

 where throughout the State and sometimes attracted by thousands 

 to the electric lights of the larger cities. One of these swarms oc- 

 curred in Indianapolis June 14. 1900. Often seen roaming about 

 in daytime in stubble and cornfields, and in early autumn feeding 

 upon the seeds of ragweed. The female of a pair in copulation was 

 noted so feeding September 16. She removed, bit into and de- 

 voured a seed kernel every 40 seconds, this being the average time 

 during fifteen minutes' observation. April 6-November 21. 



332 (1084). Harpaixs faunus Say, Trans. Amer. Phil. Soc, II, 1S23, 28; 



ibid. II, 457. 



Oblong, parallel. Uniform dark reddish-brown ; antennae and legs pale. 

 Thorax as broad as long, sides feebly rounded ; basal impressions broad, 

 shallow, distinctly punctured, the punctures extending across the base. 

 Elytral striae moderately deep, intervals alutaceous, the fifth and seventh, 

 and sometimes the apical portion of the third with a row of dorsal punc- 

 tures in the female. Length 11-12 mm. 



Throughout the State ; frequent. April 26-September 20. 



333 (1085). Habpalus convivus Lee, Proc. Phil. Acad. Nat. Sci., 1S65. 102. 

 Slightly smaller and more narrow than faimus, which it resembles 



