70 



Acarology 



portion of the ventral surface posterior to the coxae. The forked seta 

 on the palpal tarsus has three tines. All tarsi are provided with pretarsi. 



Figure 53 Pachylaelaps roosevelti 

 (Wharton), 1941. Ventral view of 

 female. (After Wharton 1941) 



Genera and subgenera: 



1. Pachylaelaps Berlese, 1886 



a. Pachylaelaps s. str. 



Type. Gamasus pectinifer G. and R. Canestrini, 1881 



b. Brachylaelaps Berlese, 1910 



Type. Pachylaelaps {Brachylaelaps) rotundus Berlese, 1910 



c. Elaphrolaelaps Berlese, 1910 



Type, Pachylaelaps {Elaphrolaelaps) fenestratus Berlese, 1910 



d. Olopachys Berlese, 1910 



Type. Pachylaelaps {Olopachys) scutatus Berlese, 1910 



e. Onchodellus Berlese, 1904 



Type. Pachylaelaps {Onchodellus) reticulatus Berlese, 1904 



f. Paralaelaps Tragardh, 1908 



Type. Paralaelaps kibonotensis Tragardh, 1908 



g. Platylaelaps Berlese, 1905 



Type. Pachylaelaps {Platylaelaps) latus Berlese, 1905 



2. Coprolaelaps Berlese, 1908 



Type. Coprolaelaps caputmedusae Berlese, 1908 



3. Megalolaelaps Berlese, 1892 



Type. Pachylaelaps haeros Berlese, 1888 



4. Pachylaella Berlese, 1916 



Type. Pachylaella robustissma Berlese, 1896 



5. Sphaerolaelaps Berlese, 1903 



Type. Laelaps holothyroides Leonard!, 1896 



Discussion: Pachylaelaptids are found in accumulations of organic 



