Promecostethus unifalculatus Enderlein 1909

Promecostethus unifalculatus Enderlein, 1909 (Figs 2–6) urn:lsid:zoobank.org:act: 02622972-F8A8-4142-81BE-E5A6A915F844 Promecostethus unifalculatus Enderlein 1909: 535–538, figs 1–7; Roewer 1915: 167; Roewer 1923: 631; Kury et al. 2014: 4. Nuncia unifalculata: Hickman 1939: 160, figs 1–16; Fage 1940...

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Bibliographic Details
Main Authors: Porto, Willians, Pérez-González, Abel
Format: Other/Unknown Material
Language:unknown
Published: 2020
Subjects:
Eta
Online Access:https://zenodo.org/record/4414597
https://doi.org/10.5281/zenodo.4414597
Description
Summary:Promecostethus unifalculatus Enderlein, 1909 (Figs 2–6) urn:lsid:zoobank.org:act: 02622972-F8A8-4142-81BE-E5A6A915F844 Promecostethus unifalculatus Enderlein 1909: 535–538, figs 1–7; Roewer 1915: 167; Roewer 1923: 631; Kury et al. 2014: 4. Nuncia unifalculata: Hickman 1939: 160, figs 1–16; Fage 1940: 283, Forster 1954:17; Maury 1990:103. Types: 1 juvenile syntype from “Possession-Insel. Weihnachtsbucht” [Possession Island, Christmas Bay], Crozet Islands, French Southern and Antarctic Lands, 25.xii.1901, E. Vaxhöffen (ZMB, not examined); 3 juvenile syntypes from the same locality collected in moss cushions by E. Werth (without further data) (ZMB, not examined). Material examined: 1 male, 3 females, Crozet Island, II 1986, J. Ledoux (MACN-Ar). 1 male (SEM voucher), same data (MACN-Ar). Redescription of male (MACN-Ar): Measurements: Total body length 4.80, carapace length 1.95, mesotergal length 2.93, carapace maximum width 1.85, mesotergal scute maximum width 2.52. Pedipalps: trochanter. 0.49, femur, 1.41, patella 0.73, tibia 0.94, tarsus 1.35. Dorsum (Figs 2 A, C; 4 A–B): Scutum magnum outline hourglass–shaped with Eta (η) shape, without conspicu- ous ornamentations. Carapace with unarmed anterior margin. Ocularium elevated, conical, unarmed (i.e., without median acute apophysis) (Figs 2 A, C; 4 A–B). Mesotergal scutum with inconspicuous grooves, without clear delimitation of areas. Free tergites and anal operculum unarmed. Venter (Figs 2 E; 4 C–D): Coxae I armed ventrally with two distal stout tubercles with subdistal setae, the remaining area covered by eight small tubercles with setae. (Fig. 4 C–D). Coxae II bearing a row of four lateral tubercles with setae, the two distal are 2x larger than the two proximal; ventral side covered by small tubercles with setae. Coxae III with seven sparse tubercles with setae, a row of two tubercles with setae on the edge with coxae III and a row of four tubercles with setae on the edge with coxae IV. Coxae IV with a row of three ventral posterior tubercles with setae; sparse ...