Till': i.ADN' i;k!:'I"lks. 



511 



.siciiis (if 1 he l;ifi;('i- i-;ii;'\\ ccd {Aiiihr(j.<i(t Irijidd L.) in tli'' Inw liulloiii 

 hiiitls of ( 111' \V;ili;isli liivcr. 



III. I liiM'onAMiA .Mills. 184(\ ('.\ iii\lli(il(ii:ic;ii n.-iiiic.) 

 TlKifjix siihl |-;iiisvcrsc. iiol iiiiir^iiicd ;i1 base; claws hilid ; liin<l 

 tihial spurs distiiict. Cascx ^Inc. cil.) lists 27 species of the genus 

 iVimi the rnitetl States, while Ijciiiz'. in a latcf jKiper {loc. cit.), re- 

 duced these to ten. the others heiiiu' regarded as either geographical 

 rai-es oi" syiionyius. Of these I'our and one variety are known from 

 Indiana. 



KKY TO IMHA.NA SCKCIKS OI' U 1 1'l'OI lA M I A. 



(/. 'riiniMx lil:icl< Willi lirn.id p.-ile l.ilcra! m.-n-.^iiis within c;i<-li nf wliieli is 



a l>l;ek ilut: tibi.r and larsi pale. '.ITI. ir.aT \( ta i a. 



(/(/. 'riii'i'ax witli a iiari'ow er w liilc lalcral inaii^'in. willioiit distinct d<il. ImiI 



usually intruded upun \>\ a imn-c ei- less prdnounccd MUiiiilatinn nf 



tlic central Mack arc;r; Ici^s black I hnni^Iiout. 



I). I'daek disk of tlini'ax nearly divided by a while (piadi-ale siiel at the 



middle of base, and an elongate trian.irnlar spot at apex. 



itT"). I'AHKNTIIKSIS. 



III). I'dack disk of tliorax without white spot at base ;uid apex, hut witli 

 two (iiseal divergent wliite dashes. 

 ('. Front lialf of elytra without niarkini^s or with only a hinneral 

 blacli dot. *.>"<■>. (:u\(rAi,is. 



('<: Elytra each with six small spots, three of wlii<-h are on the front 

 half. 

 (I. SiK)ts of elytra all small and widely sejiarated. 



077. CONVEKGENS. 



(Id. Spots much larger, the front one near suture ai)i)arently double. 



r)77a. VAU. lO-MAClLATA. 



*!»74 (3050). HiPPODAMiA Io-itxctata I.inn.. Syst. Nat., X. 17(;r), ;J3G. 



Obloiig-oval. Head black at base; thorax described in 

 key and without discal divergent bars; elytra each with six 

 rounded black spots and a small common scutellar si)ot. J x*|r« 

 Keadily known by the pale tibia> and tarsi and the mark- 

 ings of the thora.x:. Length 4.5-5.2 mm. (Fig. 187.) 



Freciiient thi'onghont the noi-theni half of State; (.\fter'Riiey.) 

 less so southward. Fehrnary '2:<-l)eeeinl)er 25. In one specimen 

 from Tia|)orte County the hlack area embraces nearly the entii-e 

 iil)per sni'face of thorax and the spots of elytra an^ nearly double 

 the usual size. 



*975 (3051). IIipPODAMiA parenthesis Say, Journ. Phil. Acad. Nat. Sci.. 

 IV, 1824, 03; ibid. II, 232. 



Oblong-oval. Head bl.-ick at base and aiiex ; tliorax d<'scribed in key; 

 elytra r«Mldish-yello\v. with a large triangular eoiiiinon scutellar spot, a 

 round spot on humerus, and a strongly curved suha|iical luniilc on each, 

 black. Ix'ngth 4 5 mm. 



[33—23402] 



