MITES OF SUBFAMILY HAEMOGAMASINAE — ^KEEGAN 227 



Ty'pe. — Female (U. S. N. M. No. 1885) collected from Gryptotis 

 parva at Thomasville, Ga., by E. V. Komarek, January 13, 1937. 



Paratypes. — Three females, three nymphs, from Scalopus aquati- 

 cus australis, West Folkston, Ga., January 10, 1936, Francis Harper; 

 one female, one male, one nymph, from Scalopus aquaticus howelli^ 

 Handsboro, Miss., June 9, 1940, G. G. Rohwer. All paratypes in 

 U. S. National Museum collection. 



HAEMOGAMASUS KITANOI ASANUMA 



Haemogamasus kitanoi Asanuma, Seibutu, vol. 3, No. 5, pp. 171-176, fig. 3, 1948. 



This species came to my attention too late for discussion in this 

 report. 



Genus EUHAEMOGAMASUS Ewing 



Euhaemogamasus Ewing, Proc. U. S. Nat. Mus., vol. 82, art. 30, p. 3. 1933. [Geno- 

 type: Euhaemogamasus amhulans (Thorell, 1872).] 



Differs from HaemogaTnasus only in lacking accessory setae on 

 sternal shield. 



KEY TO FEMALES OF GENUS EUHAEMOGAMASUS 



1. All setae smooth 2 



With some barbed setae 3 



2. Posterior margin of sternal shield invaginated to a level midway between 



posterior and median pairs of sternal setae ; usual pair of apical setae 

 distinctly larger than all other setae on dorsal shield. 



liponyssoides (Ewing) (p. 244) 

 Posterior margin of sternal shield nearly straight; usual pair of apical 

 setae little if any larger than other setae of the apical region. 



liponyssoides occidentalis, new subspecies 



3. Chelae toothless ; 4 conspicuous setae at posterior margin of body ; each of 



these about half as long as body quadrisetatus (Vitzthum) (p. 253) 



Chelae with teeth ; setae at posterior body margin only slightly enlarged — 4 



4. Each chela with 2 teeth 5 



Fixed chela with only 1 tooth 6 



5. All setae on dorsal shield smooth ; anterior pair of sternal setae on anterior 



margin of shield flanking its median third ; all sternal and maxillary 

 setae smooth ; setae on legs not barbed but with rough surfaces ; stout, 

 ventral coxal seta is only barbed seta on palp ; anterior pair of sternal 

 pores nearly parallel with anterior margin of shield. 



horridus (Michael) (p. 235) 

 Many setae on dorsal shield barbed ; anterior pair of sternal setae barbed 

 and not on anterior margin of shield ; all maxillary setae barbed ; 

 almost all setae on legs barbed; many palpal setae barbed; anterior 

 pair of sternal pores not parallel with anterior margin of shield. 



barberi (Ewing) (p. 249) 



6. Posterior margin of sternal shield invaginated to a level midway 



between anterior and median pairs of sternal setae. 



Gudemansi (Hirst) (p. 240) 

 Posterior margin of sternal shield nearly straight. 



ambulans (Thorell) (p. 228) 



886346—51 4 



