DERMACENTOR ANDERSONI 625 



8. Scutum white with blackish markings ... . . astrosignatus. 



(Australia.) 

 Scutum chestnut brown with or without white spots . . auratus. 



(Burma ; Java ; Sumatra ; Borneo.) 



1. Scutum with light spots . . . . ...... 2 



Scutum dark brown without spots nitens. 



2 . Scutum with white spots ....... 3 



Scutum with yellow or red spots (chiefly African) .... 7 



3. Scutum longer than broad or as long as broad, without median 



hump ........... 4 



Scutum broader than long with a longitudinal hump. . . auratus. 



4. Spiracle with ill-defined postero-external extension ..... 5 

 Spiracle with well-marked postero-external extension . . andersoni. 



5. Scutum as long as broad ........ reticulatus. 



Scutum longer than broad 6 



6. Spiracle smooth with very fine punctations .... variabilis, 

 Spiracle with large well-marked punctations .... variegatus. 



7. Scutum light on almost its whole surface ..... rhinocerotis. 

 Scutum with three light spots, forming a triangle . . . circumguttatus. 



Dermacentor reticulatus, Fabr. Male. Scutum chestnut brown with 

 white markings and numerous deep unequal punctations; the lateral 

 grooves not contouring the posterior border. Hypostome with six to 

 eight rows of teeth. Palps as long as broad, the second segment with a 

 small ventral retrograde spine. Coxa I has two contiguous well- 

 developed spurs, the external one conical : a short spur on each of the other 

 coxae. Coxa IV very large, much longer than broad ; the spur towards 

 the middle of its length. Length 5 mm. ; width 3 mm. (Neumann) 



Female. Scutum a little longer than broad ; cervical groove long, no 

 lateral grooves. Eyes situated about the middle of its length. Porose 

 areas oval and directed towards each other. Length 5 to 16 mm. ; 

 width 2'5 to 10 mm. (Neumann) 



This species is found throughout Europe ; it is also recorded from the 

 Caucasus, Turkistan, Persia, Siberia, Manchuria, Japan and Africa ; it is 

 parasitic on cattle, sheep, goats, deer, the pig, horse, hippopotamus, 

 rhinoceros and several species of bats. Neumann recognizes two varie- 

 ties, nivetis&nd occidentalis. 



Dermacentor andersoni, Stiles. Male. (Plate LXXX, fig. 3) Scutum 

 chestnut brown with white spots sparsely scattered ; punctations unequal ; 

 lateral groove uninterrupted and covered with punctations. Hypostome 

 with six rows of teeth. Palpi much longer than broad, without dorsal 

 retrograde spines. Coxa I with two long well developed contiguous 

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