Scaptognathus punctatus Bartsch, 1981

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 234

Scaptognathus punctatus Bartsch, 1981

Diagnosis. Glp-1 same level as Ds-1. Ds-2 on membranous cuticle. PE without dorsal seta. GA bipartite in female and male. Female with 4 Pgs and 2 Sgs. Male with 19 Pgs and 6 Sgs. Tr I–IV with 1-1-1-1 setae; Bf I–IV with 1-1-?-1 setae; Tf I–IV with 6-5-?-1 setae, 3-2-0-0 Bp setae; Gn I–IV with 5-4-?-3 setae, 2-1-0-0 Bp setae; Tb I–IV with 9-5-?-6 setae, 5-2-3-3 Bp setae; Ta I–IV with 3-3-?-3 dorsal setae, 1-1-0-0 Bp setae. Lc I with unidentate accessory process. Idiosoma length 246 in male (holotype). Idiosoma width 177 in male (holotype). Gnathosoma length 207 in male (holotype). Gnathosoma width 107 in male (holotype). Ratio of gnathosoma to idiosoma 0.84.

Remarks. The species belongs to the group with a single Bp seta on Ta II. The characteristics of the species are: 4 Pgs in femlae, Tf I–IV with 3-2-0-0 Bp setae, and Tb I–IV with 5-2-3-3 Bp setae. Male and female are known.

Habitat. Sublittoral–Bathyal zones: Coral sands and Thalassodendron (Monocotyledon) at 18–440 m depth.

Distribution. Indian Ocean: 12°25’S, 46°16’E (Zélée-Bank); 11°24’S, 47°22’E ( Mozambique Channel) [ Mozambique].

References. Abé (1990c), Abé & Green (1994), Bartsch (1981a, 1982c, 1988a, 1994b), Chatterjee & Sarma (1991).

Depository. MNHNP.