Arenihalacarus Abé, 1991

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 : 210

Arenihalacarus Abé, 1991

Type species. Arenihalacarus imamurai Abé, 1991 .

Adults. Female GP divided into four plates ( Abé 1991: fig. 1B, D); genital area with two pairs of slender pgs and at least one pair of robust internal gac. GO situated terminally, close to anal plate. No sgs on genital sclerites. Ovipositor at rest extending beyond anterior genital plate. Genital spines slender; number not known. Male GP uniform; 12 pairs of slender, filiform pgs situated lateral and posterior to GO. GO with single pair of distinct internal acetabula. Genital sclerites with three pairs of short, spiniform sgs ( Abé 1991: fig. 1F). Female and male AE longitudinally divided, either half with epimeral pore.

Juveniles. With larva and at least two nymphal stages, the deutonymph and protonymph. Genital plate of deutonymph with two pairs of pgs and two pairs of gac; sgs lacking ( Abé 1991: fig. 2E). Genital plate of protonymph with single pair of pgs and pair of internal gac; sgs lacking ( Abé 1991: fig. 2F). Larval AE longitudinally divided and with epimeral pores ( Abé 1991: fig. 2G).

Remarks. The single species presently known was extracted from sublittoral sandy deposits from the nortwestern Pacific Ocean ( Japan) ( Abé 1991).

The larval genital plate ( Abé 1991: fig. 2H) may be an anomaly or an enlarged anal plate.