Acaromantis Trouessart & Neumann, 1893, Trouessart & Neumann, 1893

Bartsch, Ilse, 2015, The genital area of Halacaridae (Acari), life stages and development of morphological characters and implication on the classification, Zootaxa 3919 (2), pp. 201-259: 206-207

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Acaromantis Trouessart & Neumann, 1893


Acaromantis Trouessart & Neumann, 1893  

(Figs 5 and 6)

Type species. Acaromantis squilla Trouessart & Neumann, 1893   .

Adults. GP and AP in female and male fused. Female GA with four pairs of pgs; sgs lacking. GO small, in posterior half of genital plate ( Bartsch 1977 b: fig. 418). Ovipositor short, at rest not extending beyond GO. Genital acetabula small, three pairs arranged along periphery of internal sacculus (Fig. 5). Genital spines not sclerotized, apical ones flattened, number not known. Male GA with 15–20 pgs arranged in a ring around GO and zero to three pairs of outlying setae; pgs smooth or slightly plumose ( Bartsch 1977 b: fig. 413). Each genital sclerite with three minute sgs. GO smaller than in female though in similar position. Female and male with pair of epimeral vesicles, each vesicle including an epimeral pore.

Juveniles. With a larval and two nymphal stages. In proto- and deutonymph GP separated from AP. Deutonymphal GP with two pairs of internal gac, one pair of pgs but no sgs ( Bartsch 1977 b: fig. 416). Protonymphal GP with pair of minute pores which may be remnants of genital acetabula (Fig. 6); no setae present. Nymphs and larva with large epimeral vesicles, each one with internal epimeral pore.

Remarks. Eleven species of this genus are presently described. The records are from tropical and temperate zones of the Atlantic and Pacific Ocean, mostly from tidal and subtidal sandy deposits ( Bartsch 2009 a).