. Insect pests of farm, garden and orchard . f the ladyljird beetles are exceedinglybeneficial, this species, with its near relative the bean-ladybird(page 315,) are the exceptions which prove the rule, being the only * Epilachna borealis Fab. Family Coccinellidce. See F. H. Chittenden,Bulletin 19, n. s., Div. Ent., U. S. Dept. Agr.; J. B. Smith, Bulletin 94, N. J*.Agr. Exp. Sta. 392 INSECT PESTS OF FARM, GARDEN AND ORCHARD injurioiLS foiius with which wv have to contend. Both the beetlesand larva) feed on the foliage of various cucurl)s, but prefer thatof the squash. It is an Eastern species,
. Insect pests of farm, garden and orchard . f the ladyljird beetles are exceedinglybeneficial, this species, with its near relative the bean-ladybird(page 315,) are the exceptions which prove the rule, being the only * Epilachna borealis Fab. Family Coccinellidce. See F. H. Chittenden,Bulletin 19, n. s., Div. Ent., U. S. Dept. Agr.; J. B. Smith, Bulletin 94, N. J*.Agr. Exp. Sta. 392 INSECT PESTS OF FARM, GARDEN AND ORCHARD injurioiLS foiius with which wv have to contend. Both the beetlesand larva) feed on the foliage of various cucurl)s, but prefer thatof the squash. It is an Eastern species, not being injurious westof the Mississippi and being most trouljlesome in the MiddleAtlantic States. The beetle is nearly hemispherical in shape,slightly oval, about one-third inch long, yellowish or reddish-brown, marked with seven black spots on each wing-cover andfour smaller ones on the thorax as shown in Fig. 283. Life History.—The life-history, as given by Dr. Chittenden forthe District of Columbia and northward, is as follows: The. Fig. 283.—The squash ladybiid {Epilachne borealif> Fab.): a, larva; 6, pupa;c, adult beetle—three times natural size; (/, egg—four times naturalsize; e, surface of egg highly magnified. (After Chittenden, U. Agr.) insect hiliernates in the adult condition under l:)ark or otherconvenient shelter and appears abi-oad sometime in May orJune. Egg deposition has been oljseived in the latter part ofJune, and there is evidence that the eggs are deposited also muchlater. The eggs are about three-tenths inch long, elongate-oval, of a yellow color, and laid in irregular clusters of from 12 to50. They hatch in from six to nine days, and the larva3 begin tofeed at once on the leaves, causing them to wither and die. Thelarva is yellow, with six rows of ])lack Ijranching spines, and isabout one-half inch long when grown. The larva attains fulldevelopment in from two to four weeks, ceases feeding, and attaches INJURIOUS TO MELONS, CUCUMBER
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