Lohmannella fukushimai Imamura, 1968

Abé, Hiroshi, 2021, Taxonomic review of the subfamily Lohmannellinae (Acari: Trombidiformes Halacaridae) with morphological comparisons among genera, Zootaxa 4980 (2), pp. 201-255 : 213-214

Lohmannella fukushimai Imamura, 1968

Diagnosis. Two corneae present. Glp-1 same level as Ds-1. Ds-2 on membranous cuticle. Ds-3 on membranous cuticle. Two dorsal setae on PE. Female with 18–24 Pgs and 8 Sgs. Male with 60–74 Pgs and 8 Sgs. Tr I–IV with 1-1-1-1 setae; Bf I–IV with 3-3-(3,4)-3 setae; Tf I–IV with (8–10)-(6–8)-6-4 setae; Gn I–IV with 8-(7,8)-(4,5)-(4–6) setae, 4-?-?-? Bp setae; Tb I–IV with 14-12-11-10 setae, 7-6-6-5 Bp setae; Ta I–IV with 3-3-4-3 dorsal setae, 2- 2-(3,4)-3 Bp setae. Lc I with unidentate accessory process. Idiosoma length 495–560 in female, 520–582 in male, 408–489 in DN. Idiosoma width 340 ( idiosoma length 500) in male, 324 in DN. Gnathosoma length 510–560 in adults. Ratio of gnathosoma to idiosoma 0.95–1.00. Ratio of P-2 to P-1 7.20.

Remarks. The most obvious characteristics are: the gnathosoma almost as long as idiosoma , Tb I with 7 ventral Bp setae, Glp small and partly replaced by spur-like setae, and long slender legs. The southern hemisphere species have large Glps in general ( Newell 1984, Bartsch 1993b). This species is different from northen hemisphere species in having Glps replaced by setae. Female, male, and DN are known.

Habitat. Sublittoral–Bathyal zones: This species might inhabit soft surficial sediments at 190–820 m depth.

Distribution.Antarctic Ocean: Off Pr. Harald Coast (68°53’S, 30°56’E), Western Weddell Sea (Atka Bay, Kapp Norvegia, Halley Bay), Western Ross Sea [ Antarctica].

References. Bartsch (1977b, 1993b, 2016), Imamura (1968), Newell (1984).

Depository. NIPR.