Endeostigmata

t

Taxonomy

Alycidae Canestrini & Fanzago 1877 (=Pachygnathidae Kramer 1877, Bimichaeliidae Womersley 1944Womersley 1944:
Womersley H. 1944. Australian Acarina, families Alycidae and Nanorchestidae. Transactions of the Royal Society of South Australia 68: 133–143.)

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 1936bGrandjean 1936b:
  Grandjean F. 1936b. Le genre Pachygnathus Dugês (Alycus Koch) (Acariens), ire partie. Bulletin du Muséum national d'histoire naturelle 8 (ser. 2): 398–405.
• Grandjean 1937dGrandjean 1937d:
  Grandjean F. 1937d. Le genre Pachygnathus Dugês (Alycus Koch) (Acariens), cinquième et dernière partie. Bulletin du Muséum national d'histoire naturelle 9 (ser. 2): 262–269, fig 9.
• Zakhvatkin 1949Zakhvatkin 1949:
  Zakhvatkin AA. 1949. New representatives of apparently segmented mites (Acarina: Pachygnathidae). Entomologicheskoe Obozrenie 30: 291–297.