96 FIELDIANA: ZOOLOGY, VOLUME 42 



Holotype. Female, ex Rattus panglima Robinson. Puerto Prin- 

 cesa, Palawan, April 10, 1947 (H. Hoogstraal). In the Chicago 

 Natural History Museum collection. 



Paratypes. Eight females, same data as holotype. One in the 

 United States National Museum collection. 



Laelaps dispar, new species. Figure 28, A-C. 



The moderately expanded epigynial plate, which is widely sepa- 

 rated from the anal plate, the short peritreme, which does not reach 



Was 







Fig. 28. Laelaps dispar, female: A, anterior portion of dorsal plate; B, pos- 

 terior portion of dorsal plate; C, venter. 



coxa I, and the long and slender proximal setae on coxa I will readily 

 serve to distinguish this species. 



FEMALE: Gnathosoma with medial hypostomal setae slightly longer than 

 lateral and gnathosomal setae; chelae toothed; pilus dentilis club-shaped, knobbed 

 apically. Dorsal plate 402 n long, 306 m wide; second pair of vertical setae short, 

 small; medial and marginal setae long, subequal in length, and posterior sub- 

 marginal setae tiny. Sternal plate much wider than long, posterior margin con- 

 cave; first pair of sternal setae reaching posterior margin of plate. Epigynial 

 plate moderately expanded, the posterior margin about straight; the distance 

 between setae IV the same as the distance between setae I. Anal plate wider 

 than long, widely separated from the epigynial plate; adanal setae laterad to anal 

 opening, short, not reaching base of postanal seta. Venter with 7 pairs of setae 

 adjacent to epigynial and anal plates. Peritreme not reaching coxa I. Proximal 

 setae of coxa I not spinelike, twice as long as distal setae; coxae II and III with 

 spinelike setae. 



MALE: Unknown. 



