8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io6 



Dixioria pela pela (Chamberlin) 



Figure l,a 



Fontaria pela Chamberlin, Psyche, vol. 25, p. 123, 1918. 



Dixioria dentifer Chamberlin, 1947, Proc. Acad. Nat. Sci. Philadelpliia, vol. 99, 



p. 28, fig. 13, 1947, (Cranberry, Avery County, N. C; type in AMNH). 

 Apheloria pela Hoffman, in D. L. Wray, Insects of North Carohna, Second 



Supplement, p. 44, 1950. 



Type specimens: Male holotype and paratj^pes of both sexes 

 (MCZ), from Burbank, Carter County, Tenn., collected by Roland 

 Thaxter. 



Diagnosis: Prefemoral process of male gonopod slender, upright, 

 only slightly bent distall}^; telopodite with tip attenuated, very little 

 expanded and modified only by the presence of a subterminal tooth 

 (A) ; telopodite blade long and slender, somewhat sigmoidally curved 

 distally. 



Description: Given in full only for the typical subspecies since the 

 others differ only in gonopod structiu-e. 



Length, 35 to 42 mm., width, 5.0 to 9.0 mm. Body relatively 

 slender, parallel-sided, segments 4-16 essentially of full width. Width 

 of body about 20 percent of length, varying from 19 to 22 percent. 



Head smooth and shining, vertigial groove distinct and obviously 

 punctate, genae slightly swollen near antennal concavity but not 

 medially impressed. A single paramedian clypeal seta on each side, 

 interantennal frontal setae and supra-antennal occipital setae absent. 

 Antennae separated by a distance equal to length of 3d antennal 

 article, moderatel}'' long, extending caudad to caudal margin of second 

 tergite; articles 2-5 subequal in size and shape, approximately 1.2 mm. 

 in length and distinctly clavate; 6th article slightly shorter and some- 

 what thicker; 7th short but distinct, with four sensory cones. Articles 

 1-4 sparinglj^ setose, 5th slightly more so, 6th and 7th densely covered 

 with short declivous setae. 



Collum slightly wider than following tergite, its caudal margin 

 complctelv straight across and the lateral ends broadly rounded; 

 anterior margin straight across head, laterad of which it is swept back 

 on each side and set off by a marginal groove. Surface perfectly 

 smooth and shining except for a slightly impressed area near the front 

 margin adjacent to the antennae in some specimens. 



Tergitcs of succeeding segments essentially similar to each other, 

 moderately arched and smooth. Paranota rather small, continuing 

 slope of dorsum, their anterior and posterior corners broadly rounded 

 off on all except the last four or five segments; anterior and lateral 

 edges set off by distinct grooves but peritremata not distinct and pores 

 opening almost laterally. Caudal edges of paranota sharp, not mar- 



