Anadenosternum

Fenďa, Peter, 2017, A revision of the genus Anadenosternum Athias-Henriot (Acari: Mesostigmata: Parasitidae), Zootaxa 4324 (3), pp. 436-450 : 449

Key to the males of known species of Anadenosternum

1. Genital lamella with anterolateral margins incised, expanded and produced into small wing-like structures directed laterally ( Fig. 31 ); fixed digit( Fig. 21 ) with bidentate hook and a row of 8–11 sharp denticles (these denticles often with two minute apices); idiosoma 375–425 µm long......................................... Anadenosternum azaleense (Daele, 1975)

- Genital lamella with anterolateral margins regularly curved, without incisions or expansions ( Fig. 12 ); fixed digit with simple hook, twolarger teeth anteriorly to pilus dentilis and a row of 12 minute denticles ( Fig. 5 ); idiosoma 450 µm long..................................................................................... Anadenosternum okalii sp. nov.

Figures

FIGURES 22 – 35. Anadenosternum azaleense. 22. Female, leg I without tarsus, dorsal view; 23. Female, leg II, dorsal view; 24. Female, leg III, dorsal view; 25. Female, leg IV, dorsal view; 26. Male, leg II without tarsus, anterolateral view; 27 – 30. Female, endogynium, variant forms of medial process; 31. Male, genital lamella; 32 – 33. Female, epistome, variant forms; 34. Male, epistome; 35. Deutonymph, epistome. Scale bars 100 µm (Figs 22 – 26), 20 µm (Figs 27 – 35).

FIGURES 17 – 21. Anadenosternum azaleense. 17. Female, dorsal idiosoma; 18. Female, ventral idiosoma; 19. Female, ventral hypostome, and pedipalp; 20. Female, lateral chelicera; 21. Male, lateral chelicera. Scale bars 100 µm (Figs 17 – 18), 20 µm (Figs 19 – 21).

FIGURES 6 – 14. Anadenosternum okalii sp. nov. 6. Female, leg I without tarsus, dorsal view; 7. Female, leg II, dorsal view; 8. Female, leg III, dorsal view; 9. Female, leg IV, dorsal view; 10. Male, leg II without tarsus, anterolateral view; 11. Female, endogynium; 12. Male, genital lamella; 13. Female, epistome; 14. Male, epistome. Scale bars 100 µm (Figs 6 – 10), 20 µm (Figs 11 – 14).

FIGURES 1 – 5. Anadenosternum okalii sp. nov. 1. Female, dorsal idiosoma; 2. Female, ventral idiosoma; 3. Female, ventral hypostome, and pedipalp; 4. Female, lateral chelicera; 5. Male, lateral chelicera. Scale bars 100 µm (Figs 1 – 3), 20 µm (Figs 4 – 5).