Hygrobates (Hygrobates) foreli

• Main Author: Tuzovskij, Petr V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Arachnida; Trombidiformes; Hygrobatidae; Hygrobates; Hygrobates foreli; Anadyr; Anadyr’; Magadan; Chaun; Anadyr River; Anadyr'
• Online Access: https://zenodo.org/record/5960977; https://doi.org/10.5281/zenodo.5960977

Hygrobates (Hygrobates) foreli (Lebert, 1874) (FigS 1–15) Material examined. Larvae (n=8) were reared from two femaleS collected in Magadan Province (ASian part of RuSSia): one female 16 AuguSt 1981, Anadyr River near Settlement Markovo, Anadyr DiStrict; one female 3 July 1982, Pucheveem Stream (inflow of the river Chaun), Chaun DiStrict. The duration of the embryonic period waS 12–15 dayS. Diagnosis. Larva. DorSal plate elongated with parallel lateral marginS; Setae Fch longer than Vi; tmas on coxae III abSent; excretory pore with muScle attachment ScarS anteriorly, excretory pore and Setae Ae forming right tranSverSe row; Setae Pi and Pe equal in length; II-Leg-3 with two heavy Setae; III-Leg4 with three heavy Setae; IIleg-5 Solenidion located dorSoproximally to middle of Segment. Description. DorSal plate elongate (L/W ratio 1.35–1.65), in unengorged larvae covering large part of dorSum (Fig. 1), with Straight lateral marginS, anterior margin Straight, poSterior end narrowed and rounded, Simple Setae long and thick, but Setae Fch longer than Vi, trichobothria Fp, Oi thin, Short and equal in length. Eight pairS of Setae (Oe, Hi, He, Sci, Sce, Li, Le, Si) Situated in Soft membrane, Oe longeSt, Hi and Sci Shorter than Oe but longer than other Setae Situated in the membrane. Both pairS of Setae on coxae I (C1, C2) relatively Short, thin and equal in length (Fig. 2). Lateral Setae (C3) on coxae II and medial Setae (C4) on coxae III long, thick and approximately equal in length. TranSverSe muScle attachment Scar on coxae III abSent. UrStigma relatively large, oval. All coxae with reticulated patternS conSiSting of elongated cellS. Setae Ci (Fig. 3) very long, well thickened, on moderately long projection. Excretory pore plate wider than long (L/W ratio 0.39–0.41), Slightly convex anteriorly, “W” — Shaped poSteriorly and with muScle attachment ScarS anteriorly; excretory pore located in the center of plate between baSeS of Setae Ae, baSeS of Setae Ai located cloSe to anterior margin; diStance between baSeS of Setae ...