| Abstract: | Abstract
The chewing louse subgenus Cicchinella new subgenus is erected and described for species of Guimaraesiella Eichler, 1949, parasitizing Old World babblers (Leiothrichidae, Pellorneidae, Timaliidae). The subgenus is divided into three spe- cies groups based on chaetotaxy, head and genitalia of both sexes. Two species are redescribed: Guimaraesiella (Cicchinella) sehri (Ansari, 1955) from Trochalopteron lineatum lineatum (Vigors, 1831) and T. lineatum setafer (Hodgson, 1836), and Guimaraesiella (Cicchinella) avinus (Ansari, 1956) from Trochalopteron subunicolor subunicolor Blyth, 1843. In addition, 12 new species are described and illustrated: Guimaraesiella (Cicchinella) falcifrons n. sp. from Actinodura cyanouroptera sordidior (Sharpe, 1888); Guimaraesiella (Cicchinella) iuga n. sp. from Alcippe peracensis per- acensis Sharpe, 1887; Guimaraesiella (Cicchinella) gombakensis n. sp. from Turdinus abbotti abbotti (Blyth, 1845); Guimaraesiella (Cicchinella) mcgrewi n. sp. from Alcippe morrisonia Swinhoe, 1863; Guimaraesiella (Cicchinella) tenella n. sp. from Cyanoderma ruficeps davidi (Oustalet, 1899); Guimaraesiella (Cicchinella) retusa n. sp. from Troch- alopteron milnei sinianum Stresemann, 1930; Guimaraesiella (Cicchinella) philiproundi n. sp. from Trochalopteron mel- anostigma schistaceum (Deignan, 1938) and Trochalopteron peninsulae Sharpe, 1887; Guimaraesiella (Cicchinella) hannesundinae n. sp. from Heterophasia picaoides wrayi (Ogilvie-Grant, 1910); Guimaraesiella (Cicchinella) pallidobrunneis n. sp. from Heterophasia melanoleuca melanoleuca (Blyth, 1859); Guimaraesiella (Cicchinella) hampuslybecki n. sp. from Heterophasia auricularis (Swinhoe, 1864); Guimaraesiella (Cicchinella) scottvillai n. sp. from Liocichla steerii Swinhoe, 1877 and Guimaraesiella (Cicchinella) ambusta n. sp. from Leiothrix argentauris rubrogularis Kinnear, 1925. A key to identify the species of Cicchinella, and both a checklist and a host-louse list of the species of Cicchinella known from the Old World babblers are provided.
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