Scaptognathus monstrosus 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 : 232

Scaptognathus monstrosus Otto, 2000

Diagnosis. Glp-1 anterior to Ds-1. Ds-2 on membranous cuticle. Dorsal seta indistinct on PE. GA uniform, entirely sclerotized in female. Female with 6 Pgs and 6 Sgs. Tr I–IV with 1-1-1-1 setae; Bf I–IV with 1-1-1-1 setae; Tf I–IV with 4-4-3-3 setae, 1-1-0-0 Bp setae; Gn I–IV with 4-4-3-3 setae, 1-0-0-0 Bp setae; Tb I–IV with 9-5-5-5 setae, 6-2-2-2 Bp setae; Ta I–IV with 3-3-3-3 dorsal setae, 1-1-0-0 Bp setae. Lc I with accessory process. Idiosoma length 394–396 in female.

Remarks. The species is characterized by the uniform GA in female. This species is similar to S. peregrinus , in having wide rostrum and peculiar sclerite connecting gnathosoma to idiosoma . However, this species distinguishable from the latter by its larger body size and the possession of Bp setae on Gn I. Female is known.

Habitat. Littoral zone: Coarse sands and rubles at 0.5– 3 m depth.

Distribution. South Pacific Ocean: Elizabeth Reef, Reef 21–149 (21°06’S, 151°43’E) (Great Barrier Reef) [ Australia].

Reference. Otto (2000b).

Depository. QMS.