TY  - JOUR
JF  - Acarologia
T1  - Variations, fuzzy boundaries and normality in Tydeidae (Acariformes: Tydeoidea)
VL  - 66
IS  - 2
SP  - 414
EP  - 430
PY  - 2026
SN  - 0044-586X
SN  - 2107-7207
PB  - Les Amis d'Acarologia
AU  - André, Henri M.
UR  - https://doi.org/10.24349/46un-n697
DO  - 10.24349/46un-n697
DA  - 2026-05-05
ET  - 2026-05-05
KW  - Tydeinae
KW  - Tydeus
KW  - Brachytydeus
KW  - Kazmierskius
KW  - hard border
KW  - eyespot
KW  - podocephalic gland complex
AB  - In this paper, I amend and complete my 2025 article “Sixty years after ‘A review of the genera of the family Tydeidae’ (Acariformes: Tydeoidea: Tydeidae)”. Special attention is given to variations, anomalies vs vertitions, as well as to hard borders vs fuzzy boundaries and consequences on systematics. The so-called eyespots are not primitive sensory organs and are probably part of the podocephalic gland complex. Gradual reduction of the genital chaetotaxy is observed both in Tydeus and Brachytydeus. Nomenclatural changes are noted in (sub)genera and species: (1) Kazmierskius (n. gen.); (2) Tydeus (Edpertydeus) (n. subgen.) with T. tuttlei as type species renamed T. (E.) tuttlei (n. comb.); (3) Tydeus (Homoiorthotydeus) (n. comb.) with H. quadrisetosus as type species renamed T. (H.) quadrisetosus (n. comb.); (4) Brachytydeus (Pertydeus) (n. comb.) with T. (P.) schusteri as type species renamed B. (P.) schusteri (n. comb.); (5) Brachytydeus (Quadrotydeus) (n. comb.) with Q. sleipneri as type species renamed B. (Q.) sleipneri (n. comb.) and B. (Q.) inconstans (n. comb.) and (6) Brachytydeus (Eotydeus) (n. comb.) with E. mirabilis as type species renamed B. (E.) mirabilis (n. comb.)
ER -