31U 



INSECTS INFESTING THE POTATO. 



Fi>i. .■)(»('). — Thivc-lined Potato Beetk-, cnlarirtMl — colors yel- 

 low and l)laek. 



The i^arent beetle (Fifr. ^^OO) (le})osits her eggs (Fig. o07(/) 

 ill i^atelies of from half a dozen to, a dozen, usually phieing 

 them on the underside of tin.' leaves; they are soiiiewliat oval 

 in sliape and of a golden-yellow color. They hatch in aliout 

 two weeks, and the larva' (Fig. o()7a) reach their full growth 

 in a few weeks and then enter tlu' earth and form small cells 

 in which to pass the jmpa state (Fig. oOTc). Several hroods 

 are [troduced in one season, and the ])erfect lieetles ])ass the 

 Winter in s(jme seejudcd place. Tlie larva is of a dull yellow- 

 ish color, with a black head ; it has the habit of covering its 

 back with its own excrements. This insect is ver}' common 

 in the southern part of the State. 



Kk.mldiks. — Use same as in Chapter ('('Mil. 



CHAl^TKK C'CX. 



The Ash-colored Blister-beetle. (Cal.; 



[Caiithd ri{< cincrea. — Fabricius.) 



SvNoxv.Ms. — Lijtta ciiierea — Fal) ; Macrobasis iniirnlor — Kirbv. 



Order, Coleoptkra ; Family, Mkloid.i:. 



I An elongate ash-colored ))eetle, about six lines long, feeding 

 upon the leaves of potatoes, etc. J 



Fig. 308. — Ash- 

 colored Blister-bee- 

 tle ; a, the beetle, 

 enlarged — color, 

 ash-gray ; (/, its an- j^ / 

 tenna, enlarged — [J / ^ 

 on the left, that of Jd L / 

 the male ; on the ^ 

 right, that of the -< 



female ; 6, the black 



variety (nmrina), enlarged — color, Idack : r, its antenna, 

 enlarged — on the left, that of the female; on the right, that 

 of the male. 



