. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE DOCK FALSE-WOEM. 17 LIFE-HISTORY STUDIES. The life-history records given below include records of both, normal and parthenogenetic individuals. Where both records occur, these are kept separate, since the normal proportion of individuals of parthenogenetic origin in nature is not known. Records of normal males and females are also kept separate in the complete life-cycle tables, except hi the table referring to the fourth generation, the in- dividuals of this generation being still in the larval stage at the time o
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. THE DOCK FALSE-WOEM. 17 LIFE-HISTORY STUDIES. The life-history records given below include records of both, normal and parthenogenetic individuals. Where both records occur, these are kept separate, since the normal proportion of individuals of parthenogenetic origin in nature is not known. Records of normal males and females are also kept separate in the complete life-cycle tables, except hi the table referring to the fourth generation, the in- dividuals of this generation being still in the larval stage at the time of writing. SPRING BROOD OF PTJP^E AND ADULTS. Pupal period.—The pupation records of the spring brood of pupse and the subsequent emergence of the adults were obtained from the. overwintering material collected hi the Entiat Valley, Wash., am March 17, 1915. Table II gives the length of the pupal period o£ 4Q> males and 71 females of the spring brood of pupae. The average pupal period for males of this brood is days, and for the females days. Table II.—Length of pupal period of spring-brood pupse of the dock false-worm, Wenatchee, Wash., 1915. Males. Females. Number of indi- viduals. Pupa-. Emerg- ence. Apr. 13 Apr. 14 Apr. 18 ...do ...do Apr. 19 ... ... ... ...do Apr. 21 Apr. 23 ...do Apr. 24 Apr. 23 Apr. 24 Apr. 25 Apr. 26 ...do Apr. 27 Apr. 2s Apr. 29 May 5 May 6 Days- Each. Total Number of indi- viduals. e length in days. M aximuM Minimum. 11 7 Pupa- tion. Mar. 31 Apr. 7 Apr. 8 Apr. 10 Apr. 11 Apr. 12 ...do Apr. 13 ...do ...do Apr. 14 ...do ...do Apr. 15 Apr. 16 ..do Apr. 17 ..do ..do Apr. 18 ..do ..do Apr. 19 ..So ..do Apr. 20 Apr. 21 Apr. 21 Apr. 26 Apr. 27 May I June 9 Emerg- ence. Apr. 14 Apr. 18 ...do Apr. 19 ...do Apr. 20 Apr. 21 Apr. 22 Apr. 23 Apr. 24 Apr. 23 Apr. 24 Apr. 25 ...do ...do Apr. 26 ..do Apr. 27 Apr. 2S Apr. 27 Apr. 2S Apr. 29 ..do May 2 May 4 ..do May 5 May 6 May 8 ..do May IS .1 16 Days- Each. Total. [mum Mini
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