Scaptognathus triunguis Bartsch, 1991

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 236

Scaptognathus triunguis Bartsch, 1991

Diagnosis. Glp-1 not distinct. Ds-2 on membranous cuticle. PE with 1 dorsal seta. GA bipartite in female. Female with 6 Pgs. Tr I–IV with 0-0-1-1 setae; Bf I–IV with 2-1-2-2 setae; Tf I–IV with 2-2-1-1 setae, without Bp setae; Gn I–IV with 5-4-2-2 setae, 2-0-?-0 Bp setae; Tb I–IV with 6-5-5-5 setae, 3-2-?-2 Bp setae; Ta I–IV with 3-3-3-3 dorsal setae, 1-0-0-0 Bp setae. Lc I smooth. Median claw large. Idiosoma length 192 in female (holotype). Gnathosoma length 172 in female (holotype). Ratio of gnathosoma to idiosoma 0.90 in female (holotype). Ratio of P-2 to P-1 2.50 in female (holotype).

Remarks. This species is distinguished from congeners by its large median claw. Single female is known.

Habitat. Intertdal zone: Coarse sediment of upper shore.

Distribution. North Pacific Ocean: Cape d’Aguilar ( Hong Kong) [ China].

References. Abé & Green (1994), Bartsch (1991a, 1994c).

Depository. ZIZMH.