Scaptognathus monnioti Newell, 1984

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 monnioti Newell, 1984

Diagnosis. Glp-1 same level as Ds-1. Ds-2 on membranous cuticle. PE with 1 dorsal seta. GA bipartite in female and male. Female with 6 Pgs and 4 Sgs. Male with 10 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 (5,6)-(4,5)-2-2 setae, without Bp setae; Gn I–IV with 5-4-3-3 setae, 2-1-0-0 Bp setae; Tb I–IV with 6-5-5-6 setae, 3-2-2-3 Bp setae; Ta I–IV without Bp setae. Lc I with unidentate accessory process. Idiosoma length 284–324 in female, 334 in male. Idiosoma width 180 in female. Gnathosoma length 203 in female. Gnathosoma width 98 in female. Ratio of gnathosoma to idiosoma 0.63–0.71 in female. Ratio of P-2 to P-1 2.54.

Remarks. The conspicuous characteristic is the small number of Pgs in male. Female and male are known.

Habitat. Littoral zone: Coarse sands and red algae at middle tide zone.

Distribution. South Pacific Ocean: Tierra Azul (Puerto Montt) [ Chile].

References. Abé (1990c), Abé & Green (1994), Bartsch (1994a), Newell (1984).

Depository. USNMNHW.