380 Acarology 



11. Plesialges TvouQss2ivX, \9\9 



Type. Plesialges tniiuus Trouessart, 1919 



12. Protolges Trouessart, 1885 (= Hartingia Oudemans, 1897) 

 Type. Protalges robini Trouessart, 1885 



13. Psoroptoides TxouQSSdin, 1919 



Type. Megninia psoroptopus Trouessart, 1885 



14. Pteralloptes Trouessart, 1884 (= Analloptes Trouessart, 1885) 

 Type. Dermaleichiis stelloris Buchholz, 1869 



15. Varchia Oudemans, 1905 



Type. Pteralloptes gambettae Oudemans, 1904 



16. Xolalges Trouessart, 1885 



Type. Xolalges scaurus Trouessart, 1885 



Rejerences: 



Gaud, J. and M. L. Petitot. 1948. Sarcoptides plumicoles des oiseaux du 



Maroc. Ann. de Parasit. 23(1-2) : 35-46. 

 . 1948. Sarcoptides plumicoles des oiseaux dTndochine. Ann. de 



Parasit. 23(5-6) : 337-347. 



Dermoglyphidae Megnin and Trouessart, 1883 



{= Falculiferidae Oudemans, 1908; 



Pterolichidae Trouessart, 1915; 



Syringobiidae Berlese, 1907) 



Figures 307-309 



Diagnosis: The dermoglyphids 



are feather mites. Both sexes have 



at least a propodosomal shield 



and often other dorsal plates as 



well. The posterior of the body is 



either round or slightly emargi- 



nate. A pair of vertical setae is 



present on the propodosoma. 



Legs III and iv are often thicker 



than the others and occasionally 



legs t or II or both are much 



thicker than the others. Apodemes 



of legs I and ii are either united or 



end freely. Heteromorphic males 



may be present in which mon- 



„ , . strous deviations from the normal 

 Figure 307 Pterolichiis ohtusus Robin. j • , , i 



Dorsum of female. (After Hirst 1922) are to be found in legs IV and the 



