Andromma didrepanum, Bosselaers & Jocqué, 2022

Bosselaers, Jan & Jocqué, Rudy, 2022, Studies in the Liocranidae (Araneae): revision of Andromma Simon, 1893, European Journal of Taxonomy 850, pp. 1-78 : 39-41

Andromma didrepanum sp. nov.

urn:lsid:zoobank.org:act:4C3E4B13-3B5A-4761-97DE-0FFA981B49E6

Figs 20 , 38

Diagnosis

Males of Andromma didrepanum sp. nov. are characterized by the shape of the VTA and RTA both provided with a sickle-shaped prong and by the embolus with bifid tip, originating on the prolateral side of tegulum.

Etymology

The species name is a noun in apposition from the Greek ‘δρέπανον’, meaning ‘sickle’, because the VTA and RTA feature sickle-shaped appendages, a large one (VTA) and a small one (RTA) ( Fig. 20E–F ).

Type material

Holotype

D.R. CONGO • ♂; Tshopo Province , Kisangani, Masako Forest Reserve; 0°36′ N, 25°13′ E; 25 Mar. 2003; J.L. Juakaly leg.; BE_RMCA_ARA.Ara 216034 .

Description

Male (holotype, Fig. 20 )

MEASUREMENTS. Total length 3.83. Carapace length 1.56, width 1.49; height 0.64.

COLOUR ( Fig. 20A–B ). Cephalothorax including legs and chelicerae entirely yellowish orange; carapace with radiating striae; sternum yellowish orange with brown rim and small brown precoxal triangles; abdomen cream, dorsum with faint broad band with slightly darker margins in anterior half.

PROSOMA. AME circular, other eyes oval; AER slightly recurved from above, width 0.31, PER procurved from above, width 0.36. AME 0.10, ALE 0.05, PLE 0.05, PME 0.05; AME–AME: 0.03, AME–ALE: touching, ALE–PLE: touching, PME–PME 0.13. Clypeus vertical, 0.12, with four long setae. Chilum absent. Sternum 0.92 long, same width. Chelicerae: anterior margin with two teeth, a third tiny one in between the two, somewhat closer to retromargin.

LEG SPINATION. All femora with one dorsal spine, F I pl 1; other spines tiny and incospicuous: T I v 2-2-2, Mt I v 2-2; T II v 2-2-2, Mt II v 2-2.

LEG I MEASUREMENTS. Fe: 1.42, P: 0.47, T: 1.27, Mt: 1.24, t: 0.86; total: 5.26.

MALE PALP ( Fig. 20C–F ). VTA sickle-shaped in ventral view, mushroom-shaped in retrolateral view. RTA pointed in ventral view, ending in a small, sickle-shaped tip; consisting of two sharp, roughly triangular processes in retrolateral view. Sperm duct surfacing as a crescent in retrolateral half of bulbus, rather short, prolateral, ending in a bifid, ventrally curved tip accompanied by a thin, flag-like conductor.

Female

Unknown.

Distribution

Known only from the type locality in Tshopo Province, D.R. Congo ( Fig. 38 ).

Figures

Fig. 20. Andromma didrepanum sp. nov., ♂, holotype (BE_RMCA_ARA.Ara 216034). A. Habitus, dorsal view. B. Same, ventral view. C–D. Left palp, retrolateral view. E–F. Same, ventral view. Scale bars: A–B= 1 mm; C–F =0.2 mm.

Fig. 38. Distribution map of species of Andromma Simon, 1893. A. aethiopicum Simon, 1893 (yellow), A. alvoculatum sp. nov. (red), A. anacardium sp. nov. (green), A. bouvieri Fage, 1936 (black), A. cyamos sp. nov. (blue), A. cycnotrachelos sp. nov. (fuchsia), A. didrepanum sp. nov. (orange) and A. divinagraciae sp. nov. (white).