DELFINADO: LAELAPTOID MITES OF THE PHILIPPINES 109 



in length. Epigynial plate rounded posteriorly, slightly expanded below the epi- 

 gynial setae; distance between epigynial and anal plates about 1.5 times the length 

 of the anal opening. Anal plate broadly oval; anal opening near anterior margin 

 of plate; adanal setae laterad to posterior margin of anal opening, subequal in 

 length to postanal seta. Venter striate, with 23-25 pairs of short setae. Stigma 



B 



Fig. 39. Hirstionyssus apoensis, female: A, dorsum; B, venter. 



between coxae III and IV, peritreme reaching anterior margin of coxa I. Coxal 

 spur pattern 0-2-2-1 ; outer posterior spur on coxa II small, short, inner spur large; 

 two posterior spurs on coxa III large, subequal, sharp; posterior spur on coxa IV 

 small, short. Tarsus II with a pair of clawlike spines at apex. 



MALE: Unknown. 



Holotype. Female, ex Rattus everetti. Mindanao: Eastern slope of 

 Mount Apo, 6400 ft. elevation, Davao, November 8, 1946 (H. Hoog- 

 straal). In the Chicago Natural History Museum collection. 



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

 United States National Museum collection. 



Hirstionyssus palawanensis, new species. Figure 40, A, B. 



This species is readily distinguished by the rectangular sternal 

 plate, and by the abruptly bent anterior dorsal spur on coxa II. 

 The coxal spur pattern is 0-4-2-1, and the tip of tarsus II has a 

 pair of clawlike spines. 



FEMALE : Gnathosomal and hypostomal setae short, subequal; chelae slender, 

 tapered apically. Dorsal plate elongate oval, 524 m long, 268 m wide; medial and 

 marginal setae minute. Sternal plate rectangular, about 1.5 times as wide as long, 

 the anterior margin rounded, the posterior margin relatively straight. Sternal and 



