24 



BULLETIN 265, L T . S. DEPARTMENT OF AGRICULTURE. 



Table X. — Summary of larval life of second generation of the dock false-worm, by instars, 



Wenatchee, Wash., 1915. 



Normal larvae. 



First irtstar. 



Second instar. 



Third instar. 



Fourth instar. 



Fifth instar. 



Sixth instar. 



ea 

 8-5 



373 



iz;.g 



!§ 



3 <3 



03 

 73 



"3 

 o 

 Eh 



03 

 ■~* 3 



1! 



3 73 



z.a 



a& 



3 =3 

 Z' 



03 

 73 



"c3 

 O 



Eh 



03 



:- a 

 £73 



S > 



PT3 



o j 



3 03 



a" 



03 

 73 



"c3 

 O 



Eh 



03 

 2t3 



£.5 



3 03 



03 



73 



"o3 

 O 



e 



■~ 3 

 §■0 



a 5 



373 



as. 



3 o3 



03 

 73 



O 



Eh 



03 

 II 

 373 



2.5 



j! 

 a& 



3 03 



03 

 73 



"o3 

 O 



Eh 



1 



1 



1 



24 



1 



24 



13 



1 



13 



3 



1 



3 



10 



3 



30 



1 



s 



5 



5 



2 



10 



14 



2 



28 



25 



2 



50 



22 



2 



44 



14 



4 



56 



4 



6 



24 



16 



3 



48 



4 



3 



12 



3 



3 



9 



12 



3 



36 



8 



5 



40 



6 



7 



42 



18 



4 



72 



1 



4 



4 



1 



4 



4 



4 



4 



16 



6 



6 



36 



4 



9 



36 



3 



5 



15 









1 



6 



6 



1 



5 







3 



1 



7 

 8 



21 



8 



2 



10 



20 



43 



146 



43 



68 



43 



82 



42 



104 



42 



191 



17 





127 



Ay 



..3.4 



Av 1.6 



Av 1.9 



Av 2.5 



Av.. 



4.5 



Av 7.4 



Max 



.. 5 



Max 4 



Max 6 



Max 5 



Max. 



8 



Max 10 



Min 



1 



Min 1 



Min 1 



Min 1 



Min. 



3 



Min 5 



Parthenogenetic larvae. 



17 



3 



51 



16 



1 



16 



7 



1 



7 



4 



1 



4 



1 



2 



2 



4 



7 



28 



22 



4 



88 



27 



2 



54 



34 



2 



68 



21 



2 



42 



9 



3 



27 



1 



8 



a 



8 







40 



4 



3 



12 



6 



3 



18 



18 

 3 



3 

 4 



54 

 12 



20 

 6 



7 



4 

 5 

 6 



80 

 30 

 42 



1 



13 



13 



47 

























3 



7 



21 









179 



47 



82 



47 



93 



46 



112 



46 



202 



6 



49 



Av 



..3.8 



Av 1.7 



Av 2 



Av 2.4 



Av.. 



4.4 



Av 8. 1 



Max 



.. 5 



Max 3 



Max 3 



Max 4 



Max. 



7 



Max 13 



Min 



3 



Min 1 



Min 1 



Min.. . . 1 



Min 



2 



Min 7 



Length of life of second-brood pupae. — Pupal records were obtained 

 from 12 normal pupae, all males, with one exception, and from 3 

 parthenogenetic pupae, and a summary of these records is given in 

 Table XI. 



Table XI.- 



-Summary of pupal stage of second generation of the dock false-worm, 

 Wenatchee, Wash., 1915. 



Normal individuals. 



Parthenogenetic males. 



Number 

 of indi- 

 viduals. 



Days — 



Number 

 of indi- 

 viduals. 



Days — 



Each. 



Total. 



Each. 



Total. 



2 

 6 

 3 

 1 



4 

 5 

 6 



8 



xn 



m 



8 

 30 

 18 



8 



1 

 2 



5 



7 



m 



m 



5 

 14 



12 



Average 

 Maximu 

 Minim n 



64 



5.3 



8 

 4 



3 



Average 

 Maximu 

 Mininm 



19 



6.3 



7 



5 



