86 FIRST ANNUAL REPORT 0* 



THE SMALL WHITE BRISTLY CUT-WORM. 



(Larva of the Figure 8 Minor, Celana renigera, - 



During the month of August in North Illinois, a small dirty-white 

 cut-worm may frequently be lounil in (lower gardens, where it doubt- 

 £ Fis " - 3L 1 less feeds for the most part on the 



roots of various- flowers. This worm 

 is represented at Figure 31 b. It 

 never gets to be more than § of an 

 'I inch in length, and is covered with 

 distinct, stiff yellow bristles, and may 

 a b be popularly known by the above 



name. During the fore part of August it descends deeper into the 

 ground, and soon changes to a very bright shiny, mahogany brown 

 chrysalis, from which in about three weeks afterwards, the moth 

 emerges. 



This moth is represented (as well as a wood cut can represent it) 

 at Figure 31 a. It is quite prettily marked, the fore-wings being 

 brown, variegated with lilac«gray and moss-green, with a deep brown- 

 spot about the middle and a silvery annulation around the kidney- 

 shaped spot. It is the Celmna renigera of Stephens of which C\ her- 

 famacula>Gu&n6e is a synonym, and as it should have a popular name,, 

 it may be called the "• Figure 6 Minor,' 1 in allusion to the silvery edge 

 of the kidney-spot which almost always reminds one of the figure 8. 

 In the genus Celmna the wings are entire, broad and rounded, and 

 there is a conspicuous tuft on the crown of the head. The species, 

 may at once be distinguished from those of Ayr oils and lladena by 

 their smaller size and more rounded appearance. 



Cel^na renigkra. Stephens. — Larva- — Length 0.75 of an inch. — Coior dusky salmon-yellow,. 

 the dusky dirty appearance,, caused by innumerable dark specks all over it. Largest at the four 

 middle segments and tapering thence each way. A dark lateral stripe, distinct on the middle seg- 

 ments, indistinct at both ends. Distinguishing feature, very visible stiff yellowish bristles, pro- 

 ceeding from the usual spots which .-ne small. A dorsal liue is indicated under the glass by two 

 indistinct thin lines at the joints of the segments. 



Chrysalis. — Length 0.56 of an inch; concise; of a bright polished mahogany brown, with, 

 dark eyes and very slightly punctured on I he anterior portion ot the abdominal segments. 



Imago. — Expanse 1.10 inches. Fore wings brownish-gray, with a more or less determined carne- 

 ous or lilaceous hue. Orbicular spot sub-obsolete; sometimes entirely obsolete. Renrform spot 

 of normal shape,moss-green, with asnow-white annulation, indistinct above,- broad and distinct below. 

 Ordinary lines lighter. Basal half line distinct only on costa, and below posterior median nerve*. 

 Transverse anterior single, obliquing but slightly, and bordered posteriorly witha wry thin broken. 

 darker line ; it is moss-green in th midd running from ft to the basal 



half -line, dividing the sub-basal space. Opposite this green in the median space, is a dark sub- 

 quadrate almost black spot, and bel ma the wings an also quite dark. Transverse 

 posterior single, posteriorly oblique a little more than j od wing, then parallel with, 

 posterior margin, forming at the second oerve a roundish spot which extends m the anal angle, and 

 is dark below and mos :,i line nsualJy yery indistinct — merely indicated 

 by a few dots A median arcuated band is per< •■; broader and darker between the stig- 

 ma and interrupted in the mid I S minute light spot on each 

 vein at posterior margin. Costa with a light spot at terminus of sub-basal line, of transverse an- 

 terior, and above peniform spots— dark each 3ideof tin-seam! at terminus of median band; con- 

 colorous with wing at subterminal space, having foup verj it ends of subter- 



minal and transverse posterior line It them Fri ■ ucdI ritb the- wing* 



having a very fine darker edge.. 



