Xenohalacarus Otto, 2000

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 237

Genus Xenohalacarus Otto, 2000

Type: Xenohalacarus longirostris Otto, 2000

Diagnosis. AD and PD large, OC small. Dorsum with 6 pairs of setae. OC and PD each with 2 pairs of Glps. AE with 3 pairs of setae. PE with 1 dorsal and 2 ventral setae. GA with Pgs. Sgs absent in female. Gnathosoma large, with slender, parallel-sided rostrum. Gnathosomal base with a pair of maxillary setae. Palpi 4-segmented, attached lateral to rostrum. Legs slender. Gn shorter than adjoining segments. Lc I with large strong tines. Lc II –IV crescentlike, with accessory process and minute tines on the shaft. Median claw present. Ta IV without parambulacral setae. The general structures of the genus is schematically shown in Fig. 8 .

Remarks. The genus resembles Lohmannella and Porolohmannella in general appearance, but can be discriminated from the latter genera by having Lc I with long heavy tines. A single species is recorded from coral sands in the Queensland Plateau in Australia.

References. Bartsch (2006b), Otto (2000a).

Figures

FIGURE 8. Schematic diagram of general structures of the mite body in Xenohalacarus.