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Amphialychus

ALYCIDAE Canestrini & Fanzago 1877 (= Pachygnathidae Kramer 1877, Bimichaeliidae Womersley 1944)

 

Amphialycus penophthalmus Zachvatkin, 1949 Ukraine; A. leucogaster (Grandjean, 1937) Europe  (see Uusitalo ms.).

 

DIAGNOSIS.  Prodorsum with 2 pairs of filiform trichobothria (si, ve) and 4 pairs of setae (vi, se, in, exp); naso undeveloped, but median eye present, 2 pairs of lateral eyes.  Rutella with tooth and lobe; subcapitulum with 5 pairs of setae; chelicerae chelate-dentate, each with 1 seta.  Opisthosoma hypertrichous; 3 pairs of genital papillae.

 

 

REMARKS.  This genus is poorly known, but is most similar to Orthacarus, the species of which have lost seta vi, the median eye, and a lateral eye and to Alycus which have lost the median eye, but usually retain a vestigial naso.

 

References

Grandjean F.  1936.  Le genre Pachygnathus Dugês (Alycus Koch) (Acariens).  Ire partie.  Bull. Mus. nat. hist. 8 (ser. 2):398-405.

Grandjean F.  1937d.  Le genre Pachygnathus Dugês (Alycus Koch) (Acariens).  Cinquième et dernière partie.  Bull. Mus. nat. hist. 9 (ser. 2):262-269, fig 9.

Zakhvatkin AA.  1949.  New representatives of apparently segmented mites (Acarina: Pachygnathidae).  Ent. Obozer. Moscow 30: 291-295.