CHIGGERS — FARRELL 207 



of an unattached, unengorged chigger was made at the type local- 

 ity of E. rubra (pi. 2). 



Remarks: The original description of E. setosa included the 

 species in an "akamushi" group of the genus Trombicula. E. 

 setosa was included in a key of the "akamushi" group. The type 

 slide given was USNM 1256 ; the type host, Percmyscus g. gossy- 

 pinus; the type locality, Okefenokee Swamp, Ga. Fuller (1948) 

 examined the cotypes and placed the species in the genus 

 Euschongastia. The original description and key validated the 

 name. The type specimen or the cotypes are the namebearers for 

 the species. One of the cotypes of E. setosa has been examined 

 during this study. The important sensillae are missing, but the 

 specimen belongs to Euschongastia. Fuller's new combination is 

 here considered to be correct and the name of the species to be 

 E. setosa.. 



The specimen on the slide in the U. S. National Museum marked 

 "C. E. F. X." is here designated lectotype. 



24. Euschongastia seiuricola (E^^iiiy) 



FidURE 8,,a; Platks 8, 21 



Schongastia sciuHcQla Ewing, 1925b, pp. 261-262; 1929c, p. 297. 

 Neoschongasiia schiricola, Ewing, 1931, p. 5.— Radford, 1942, p. 74.-— Sig 



Thor and Willmann, 1S47, pp. 311, 312. 

 Euschongastia a7n€7ncana Ewing, 1938, p. 293; 1946c, p. 22.— Sig Thor and 



Willmann, 1947, p. 317.— Fuller, 1952, pp. 182, 183. 

 Euschongastia sciuricola, Fuller, 1948, p. 108; 1952, pp. 182, 183, 184.— 



Brennan, 1948, p. 473.— Wharton, .Jenkins, et al., 1951, pp. 27-28. 



Description : Size : Length, 430 to 740 ; width, 310 to 675. 



Shape : Oval ; ovoid ; almost round. 



Gnathosoma: Seta on palpal femur rather long with long, 

 spaced setules. Seta on palpal genu smaller with two rows of 

 slender setules. Dorsal seta on palpal tibia with few setules; 

 lateral seta nude, occasionally with one or two tiny setules; ven- 

 tral seta rather long with three or four rows of setules. Palpal 

 claw curved, with five to seven prongs ; median prong longest with 

 two accessories slightly shorter; other prongs more proximal on 

 the convex curvature. Galeal seta with about two to four setules. 

 Chelicera with heavy basal segment; blade with a tiny, distinct 

 dorsal tooth near apex and a larger ventral tooth. Punctae on 

 palpal coxa ; none apparent on cheliceral base. 



Legs: Leg I with two slender genualae and a microgenuala, 

 two tibialae and a microtibiala, a spur with a microspur about 

 two-thirds the length of the spur distal and slightly posterior to 

 it, a subterminala, a parasubterminala, and a pretarsala. Leg 11 



