REVISION OF NEARCTIC TERMITES. 



107 



This type of reproductive form breeds true to type and never 

 produces nymphs of the normal or first form, which develop into 

 the colonizing winged adults (Thompson and Snyder, 1919). 



A rarer type of reproductive form is that of the apterous third 

 form, sometimes known as ''ergatoid" or "worker-like." (Fig. 63, 1.) 

 Only 24 of these forms, all but one females, have been found in colonies 



Fig. 62.— 1. Reticulitermes tibialis. Dorsal view of queen of tue second form, 

 view of king of the second form. x is- 



X 17. 2. Dorsal 



of Reticulitermes in this country. They are apparently rare in species 

 of this genus, but both males and females are fairly common in colonies 

 of Prorliinotermes simplex Hagen. The colonies of Reticulitermes in 

 which they have been found have in all cases except two been small. 

 Three individuals of the species Jlavipes KoUar were found in the same 

 colony and 17 in another in Virginia, one of virginicus Banks in 

 North Carolina and one in Virginia (Snyder, 1915), one of tibialis 



