the vinter months. This pictxire, possibly modified by the host's 

 seasonal breeding cycle and activity, reqioires further observation. 



REMARKS 



The exceptionally long legs of this species is a character 

 shared by many chiropteran parasites, notably the Streblidae and 

 Nycteribidae (Diptera) and Argas boueti (cf . Figtires 33 and 3A), 

 This feature is, however, not shared by all bat parasites, es- 

 pecially those which are strongly appressed laterally, as fleas, 

 or appressed dorsoventreilly as bugs of the families Cimicidae and 

 Polyctenidae . Except for Argas boueti, all the known chiropteran- 

 infesting Argas species have normaL- length legs, and indeed some, 

 as for instance Argas transgariepinus White, I846 (cf , Hoogstraal 

 195 2A.), have comparatively short legs. 



Certain morphological peciiliarities of adults and immature 

 stages have been briefly mentioned by Arthur (1953A). The haller*s 

 organ is described by Arthur (1956B); it is like that of I, simplex 

 subs pp. "" 



Schulze (I938A, figure 28) has utilized this species to il- 

 lustrate the thesis of morphological indicators due to pressure 

 within the developing nympb. 



The subgeneric position of this species has been discussed 

 by Neumann (19I6) , but this is moot; Arthur (1956A), the out- 

 standing contemporary specialist on this genus, disregards it 

 until f\irther study can be imdertaken. 



IDENTIFICATION 



Both sexes and the immature stsiges of I. vespertilionis are 

 unique in the extreme elongation of the leg's. The long anel 

 grooves of both sexes are open; those of the male slightly con- 

 verge posteriorly, biit female anal grooves are parallel. The 

 male scutum has a few large punc tat ions in three rows and nu- 

 merous fine, scattered punctations; the female scutum has ntu 

 merovis small, shallow punctations. 



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