THE GENETICS OF HABROBRACON JUGLANDIS ASHMEAD 



mate, and the mutant was lost immediately after 

 appearance. 



EXTENDED, ex (wings). In 1934 in the progeny 

 of a wild-type female. X-rayed (dosage about 

 4000 R units), a male appeared with wings held 

 back but failing to fold over the body. This 

 mutant does not show when the wasps are bred at 

 room temperature. This mutant was not tested 

 with others and was discarded soon after its 

 appearance. This mutation recurred in the sum- 

 mer of 1945 in the progeny of an X-rayed wild- 

 type female. Both sexes are fertile and of 

 normal viability. 



PINCHED, pd (wings). In 1934 this mutant ap- 

 peared in a single male among the offspring of 

 an X-rayed wild-type female (dosage about 4000 

 R units). The fourth radius vein is very short 

 so that the longitudinal veins are drawn to- 

 gether giving the wing a pinched appearance. 

 Both sexes are fully fertile and of normal vi- 

 ability. (Discarded) 



REDUPLICATED, re (wings). In 1934 there ap- 

 peared among the progeny of an X-rayed wild- 

 type female (dosage about 4500 R units) a num- 

 ber of males with the primary wings more or 

 less doubled. The mutant is variable, some- 

 times being indistinguishable from type. The 

 males usually have drooping antennae, but the 

 heterozygous females haVe normal antennae. This 

 mutant seems to be semi-dominant since the het- 

 erozygous females usually have wings redupli- 

 cated. The females are fully fertile and the 

 males are of normal viabi]itv, (Discarded) 



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