Results of work on blister beetles in Kansas . larvae large enough to be-long to this species have been found during the winter or indicates that the species hibernates only in the coarctate larvalstage. After the springs warmth penetrates to the coarctate larva therigid skin splits along the anterior portion of the dorsal line. Thethird larva wriggles out and burrows toward the surface. Thewriters earliest record of this transformation is dated May 28, butanother record gives pupation on May 27, so it is safe to say that thethird larvae begin to appear in Kansas about May 20. Pupa
Results of work on blister beetles in Kansas . larvae large enough to be-long to this species have been found during the winter or indicates that the species hibernates only in the coarctate larvalstage. After the springs warmth penetrates to the coarctate larva therigid skin splits along the anterior portion of the dorsal line. Thethird larva wriggles out and burrows toward the surface. Thewriters earliest record of this transformation is dated May 28, butanother record gives pupation on May 27, so it is safe to say that thethird larvae begin to appear in Kansas about May 20. Pupation. After a few days activity the third larva has approached to within1 or 2 inches of the surface. Here it constructs an elongate cellat an angle with the horizontal of from 30° to GO0. It turnson its back therein (fig. 11) and begins transformation to thetrue pupa. The process requires several days, the exact time depend- 2 Riley, C. V., Packard A. S., and Thomas. Cybds. Op ctt., p. 209. 12 BULLETIN 967, U. S. DEPARTMENT OF Fig. 11.—Pupa of blister beetle in situ in cell. ing on the prevailing temperature. Pupae have been secured be-ginning May 27 and continuing until August. Five that were han-dled in confinement be-tween May 27 and July 24had an average pupal pe-riod of 18 days. Emergence of Adult. As the time for emer-gence approaches, the tipsof the appendages begin todarken. The colorationspreads gradually through-out the appendages andinto the body. Severaldays before the emergenceof the adults twitchingmovements begin in thetarsi. These become morevigorous toward the end ofthe pupal period, finally involving the legs and oral its struggles the beetle rights itself and explores the narrowconfines of its chamber. A thin, transparent, parchment-like mem-brane loosens on the surface of its body and is torn beyond recogni-tion by the sharp tarsal claws. Adults frompupse that have formed against the walls ofglass containers have remained
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