144 ^'^^^' '^'OK'^ STATE MUSEUM 



tria text or Harris and it is therefore noticed under its proper name, 

 thoii.i,di in a preceding paper the author refers it to 1 1 \- p li a n t r i a 

 cunea Drury. This latter insect may also occur in the State to some 

 extent but appears to be rarer llian the other species. 



Life history. The moths tly from early in June till the middle of 

 Aui,aist, at least, occurring in large numbers in the middle of June, the 

 early jiart of July and the first half of August, according to captures by Dr 

 II. ( I. I)\ar at Poughkeepsie X. \'. Records kindly placed at my disposal 

 by -Prof. G. II. I hulson of the normal school at Plattsburg, show that 

 moths appear in small numbers at that place from the gth to the last of 

 May, that the)' are cpiile abundant throughout |une, being most numerous 

 from the 8th to the loth and from the i4lh to the 30th. They were also 

 present in small num])ers throughout July, occurring in largc^r numbers on 

 the 2)^\ and 4lh, and one individual was taken .August 2. The caterpillars 

 begin to I)e noticed the latter ])art of [une t)r t-arl\- in [uly and are most 

 abundant in August. They were observetl at Annandale, Dutchess co., 

 June 27, H)00 and at Buffalo, Erie co., lul\- 3 in the same \ear. Thus in 

 the southern portions of l\u: .State tlu; normal occurrence of at least a partial 

 second brood can harill\ be (jucslioned, but so far north as Plattsburg it 

 would appear from the recortl given 1)\- Professor Hudson that but one 

 generation a year is the usual rule. 



The yellowish or greenish eggs are de])osileil in clusters of several 

 hundred on the underside of a leaf and are- fre(|uently protecteil 1)\- atllier- 

 ing white .scales from the mother's body. They hatch in warm weather 

 in from 7 to 10 days, the young caterpillars beginning at once to spin a web 

 under which llie)' feed. This protecting web is extended to include more 

 ami more foliage till finally a considerable proportion of a Ijranch may be 

 inclosed. The caterpillars feed only on the upper portion of the leaf, 

 devouring onl_\- the softer parenclu'ma. The skeletoniz(;d leaves within tlie 

 nest s(Jon dr\-, turn brown and they with the frass ami cast skins of the 

 caterpillars, render the nests very unsightly objects. Occasional!}" the 

 cater])illars ma\- be forced to leave their webs on account of a scant)' food 



