Neohaematopinus cognatus Johnson, 1959

Neohaematopinus cognatus Johnson, 1959: 583, figs 35a, 35d, 39, 44.

Neohaematopinus cognatus Johnson, 1959; Johnson 1964: 78.

Neohaematopinus cognatus Johnson, 1959; Durden & Musser 1994: 62.

Type host: Menetes berdmorei Blyth, 1849 —Berdmore’s ground squirrel.

Malaysian hosts: Exilisciurus whiteheadi (Thomas 1887), Sundasciurus everetti (Thomas 1890), Sundasciurus jentinki (Thomas 1887) .

Malaysian localities: Gunung Kinabalu & Gunung Trusmadi (Sabah) Malaysian Borneo (Johnson 1964) .

Geographical distribution: Malaysia, Thailand (Durden & Musser 1994; Price & Graham 1997).

Remarks: The adult male and female of Neohaematopinus cognatus were described and illustrated by Johnson (1959). Johnson (1964) stated that Sundasciurus everetti [as Dremomys everetti] in Borneo may be an ecological “replacement” for Menetes berdmorei which is only found in Thailand, and that S. everetti may be a secondary host of N. cognatus . Also, Johnson (1964) noted a difference between the enlarged dorsal seta of the basal antennal segment of lice from Exilisciururs whitehadi and Sundasciurus jentinki and those from typical Thai specimens but, due to the small number of specimens available from these two hosts, it could not be decided if that difference was significant.