iiii: i'i;M) Aci'ors i)i\i\c; i!i;i:i i.iss. -!<•!• 



iiihr 1 1. i..\<'<'<»rilllJM. 

 This Irilic is r.'|trcsciitc(l in llic Inil'Ml SI.mIcs 1)\- IIic siiiii'lc 

 •melius. 



111. Laccoimiims Leach. )S17. MJi-., "a pool i l()viii<i-.") 



Small and very active beetles, ovate and depressed in Torni. and 

 nsually spotted in color-; thorax without side inar.uins; scnlelluui 

 almost, concealed; prosternal spine narrow, acuminate and much 

 c(^mi)ressed ; hind coxa^ expand(Ml into broad processes which are 

 arched in front and almost comi)letely conceal the coxal cavitias; 

 hind leo-s highly developed. The males have the four front tarsi 

 dilated and clothed with spongy hairs lieneath. The ])lates of the 

 hind coxa^ have a ridge of fine lines, beginning near the middle at 

 the insertion of the femora and extending outward and backward. 

 These ridges, with their tile-like an-angement, when rubbed by the 

 hind femora, form a mnsical or stridulating oi-gan. Four species 

 have l^een taken in Indiana. 



KEY TO INDIANA SPECIKS OF I.AecOPIIir.X^S. 



{I. Elytra without distinct .yellow cross-bars: male witli a coxal tile. 

 }). Elytra blackish, with one or more greenish-yellow spots. 



c. Larger. mm.; elytra with the margin, four submarginal sjiots and 

 three basal lines greenish-yellow. .".'.m;. macui.osis. 



cc. Smaller. 4.5 mm.; elytra dark reddisli-browii. with the snbhnmeral 

 mark ot vuiciilnsus present, the others confused. 



r»97. PKOXIMIS. 



hh. Elytra dull yellow, with a distnict blackish bar behind the middle. 



r;!)S. FASCIATUS. 



(Id. lOlytra iilack with two cross-bars and apex yellowisli ; size less than 

 r> nnu. ; males witliout a coxal hie. :*.!•'•». rxDAirs. 



:'.1M) (1242). LAceorun.rs AtAcixosrs Say. Trans. Amer. I'liil. Soe.. II. 

 1823. 100: il)id. 11, 514. 

 Ovate. Head, thorax .nid under jiaris reddish-yellow. Elytra as meu- 

 lioneil in key. the submarginal yellowish spots being in position, subhumeral, 

 median, postniedian and suliapical. the second and fourth nsually the larger, 

 'i'he yellow basal m.irkiiigs vary nuicli in size and distinctness. Thorax 

 very short, four times wider than long, its surface, as well as that of elytra, 

 very finely reticulate. Elytra obliquely truncate at ai)ex. with one or two 

 iri-egnlai- I'ows of minute imnclures. Lenglli (i mm. 



Tliri'nu-lionl I he Slalc : connnon. M:in-ti Id October!.*:!. l*i-ol)- 

 al>l\' hiliernales. 



