THE GENETICS OF HABROBRACON JUGLANDIS ASHMEAD 



LINKAGE, the tendency of certain characters to 

 remain together in heredity, since the 

 genes responsible for their expression are 

 located on the same chromosome. 



LOCUS, the position of a given gene or any one 

 of its alleles upon a chromosome. 



LUG, either end of a chromosome. 



M 



MELANINS, black pigments. 



MESOPHRAGMA, the transverse partition between 

 the prothorax and the mesothorax in insects. 



MESOPLEURON, the mid-region of an insect pleuron 

 (see PLEURA) . 



MESOSCUTELLUM, the mid-region of an insect scu- 

 tellum (see SCUTELLUM) . 



MESOSTERNUM, the mid-region of an insect sternum 

 (see STERNUM) . 



METAMORPHOSIS, the series of marked changes 

 through which an individual passes from 

 the egg stage to the adult stage. In in- 

 sects, complete metamorphosis includes egg, 

 larva, pupa, and adult stages. 



METATARSUS, the first segment of the insect foot. 



MICROCHAETAE, minute bristles on an insect body . 

 Those on the wings are of particular use 

 in Habrobraconology . 



MIMICS, individuals assuming the appearance of 

 individuals v/ith dissimilar genotypes , such 

 as ivory and white eyes in Habrobracon. 



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