ANOPLURA OF THAILAND — JOHNSON 585 



females, RE-2517. May 8, 1953, one female, RE-2520. May 8, 

 1953, three males, two females, RE-2521. May 20, 1953, one male, 

 one female, IlE-2574. May 21, 1953, one male, RE-2577. May 21, 

 1953, one male, two females, RE-2580. lopbburi: Khao Oerawan 

 Mt., July 27, 1953, two males, one female, RE-2843. 



Holotype deposited in the collections of the U.S. National Museum, 

 type-catalog No. 64384. 



Diagnosis and description: In ail ways A^. cognatus is similar to 

 A^. callosciuri except that the basal segment of the antenna of both the 

 male and female of cognatus lacks an enlarged posterior apical seta, but 

 has a slightly enlarged seta set in from the apex, and that the basal 

 segment is not prolonged posteroapically. 



Lengths: Male 1.4 mm.; female 1.8 mm. 



Neohaeniatopinus sciurinus and related forms 



Figures 31, 33 



For a number of years there has been confusion as to what name or 

 names should apply to a group of Neohaematopinus species found on 

 members of Sciurus and related genera of squirrels. Ferris (1951) 

 reviewed the situation and reasoned that more than one species might be 

 present but that final decisions would have to await the collection of 

 further material. Names proposed in this group include the following: 



1. Haematopinus sciurinus Mjoberg, 1891, type host Sciurus niger, 

 the North American fox squirrel. (Acanthopinus antennatus Osborn, 

 1910, from the same host, is a junior synonym of sciurinus Mjoberg.) 



2. Neohaematopinus antennatus semifasciatus Ferris, 1916, type host 

 Sciurus douglasi (now known as Taraiasciurus douglasi), the pine or 

 red squirrel. Ferris (1923) wrongly synonymized semifasciatus under 

 sciurinus Mjoberg. 



3. Neohaematopinus sciuri Jancke, 1931, type host Sciurus vulgaris, 

 the European squirrel. 



4. Neohaematopinus callosciuri, type host Callosciuris f inlay soni 

 from. Thailand. 



5. Neohaematopinus cognatus, type host Menetes herdmorei from 

 Thailand. 



At least a partial explanation of the confusing species tangle has 

 been found through a study of the specimens described in this paper as 

 N. callosciuri from Callosciurus spp., and N. cognatus from Menetes 

 spp., plus numerous specimens of Neohaematopinus in the U.S. Na- 

 tional Museum from North American Sciurus carolinensis, S. niger, 

 and Tamiasciurus spp., and specimens from British Sciurus vulgaris 

 (lent by T. Clay of the British Museum). Since very hmited material 



