CHIGGERS — FARRELL 169 



In the study of the ''rubra" group, at first all forms were placed 

 together. It later became apparent that these specimens from the 

 north were different from those collected in Duke Forest. From 

 this "difference" their name is derived. 



12a. Euschongastia diversa diversa, new subspecies 



Figures 4,6, 5,c, 6,a,6; Plates 7, 14 



Description : Size : Length, 290 to 635 ; width, 185 to 430. 



Shape : Ovoid to broad oval. 



Color : As in E. rubra. 



Gnathosoma: General form as in E. rubra; fewer setules on 

 all setae. Seta on palpal genu with about two to twelve setules in 

 one or two rows on convex curvature. Lateral seta on palpal tibia 



Table 8. — Distribution of setules on the lateral seta of the palpal tibia by 



the pair of setae per specimen for UO specimens of E. diversa diversa. 

 Number of setules Frequency 



0-0 36 



0-1 2 



0-x 1 



x-x 1 



(Each figure is the number of setules on one seta of the pair; x indicates a seta broken o£E) 



usually nude (table 8 and fig. 6,6). Palpal claw similar to that 

 of E. rubra; two accessory prongs arising on proximal half, 

 clearly interrupting the smooth contour of the claw. Galeal seta 

 with reduced number of setules, usually one or two (table 9, and 

 fig. 6,(i) . Chelicera similar to that of E. rubra. 



Anomaly : One specimen with four prongs on one palpal claw. 



Legs : Generally similar to E. rubra. 



Scutum: Generally somewhat wider and shorter than in E. 

 rubra. Less taper between anterolaterals and posterolaterals than 

 in E. rubra; width between anterolaterals proportionately greater. 



Table 9. — Distribution of setules on the galeal seta by the pair of setae per 

 specimen for UO spechnens of E. diversa diversa. 



Number of Frequency 

 setules 



0-0 2 



0-1 5 



0-2 1 



0-x 1 



1-1 8 



(Each figure is the number of setules on one seta of the pair; x indicates a seta broken off) 



Posterior margin not so rounded as in E. rubra, tending to be 

 straight or with a shallow concavity in the middle. The whole 

 scutum appearing somewhat rectangular. Ridges and depressions 

 not so marked as in E. rubra, appearing more flat. Apparently 

 a tendency within the species for scutum to become larger from 

 west to east (fig. 5,(j) . 



Number of Frequency 

 setules 

 1-2 9 



1-3 1 



1-x 1 



2-2 4 



Number of Frequency 

 setules 

 2-3 5 



2-x 1 



3-x 1 



x-x 1 



