Andromma cyamos, 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 : 24-26

Andromma cyamos sp. nov.

urn:lsid:zoobank.org:act:BD22B3C5-F9AD-4FCF-B2D2-95D1CC2A845A

Figs 12 , 38

Diagnosis

The female of Andromma cyamos sp. nov. is characterized by the absence of leg spination apart from the dorsal femoral spines, the poorly developed fovea and by the epigyne with small, closely set copulatory openings shaped like a mung-bean.

Etymology

The species name is from the Greek ‘κύαμος’, meaning ‘bean’, referring to the mung bean-shaped copulatory openings ( Fig. 12D ).

Type material

Holotype

D.R. CONGO • ♀; Visiki , NW of Butembo; 0°33′ N, 29°42′ E; 1100 m a.s.l.; Jun.1974; M. Lejeune leg.; terreau prélevé sous bois mort dans un champ cultivé; BE_RMCA_ARA.Ara 155566 .

Description

Female (holotype, Fig. 12 )

MEASUREMENTS. Total length 3.20. Carapace length 1.63, width 1.35, height 0.50.

COLOUR ( Fig. 12A–B ). Carapace pale yellow with faint radiating striae; legs and palp pale yellow, tips of tarsus yellowish orange; sternum pale yellow with thin darker rim; abdomen dorsum pale sepia mottled with grey, sides and venter including spinnerets cream.

PROSOMA. Fovea hardly visible. MOQ length 0.23, anterior width 0.25, posterior width 0.26. AER slightly recurved from above, width 0.46, PER procurved from above, width 0.49. All eyes circular; AME 0.10, ALE 0.08, PLE 0.07, PME 0.05; AME–AME: 0.05, AME–ALE: 0.03, ALE–PLE: 0.07, PME–PME: 0.18. Clypeus vertical, 0.10, with four long setae. Chelicerae with dispersed setae. Chilum absent. Sternum 1.00 long, 0.92 wide.

LEG SUPINATION. Very few spines, only femora with one dorsal spine.

LEG I MEASUREMENTS. Fe: 1.63, P: 0.50, T: 1.28, Mt: 1.42, t: 1.09; total: 5.92.

PALP. Female palpal tarsus slightly curved, with sparse scopula.

EPIGYNE ( Fig. 12C–F ). Trapezoidal area, wider than long, with slightly oblique mung bean-shaped copulatory openings, less than half their longest axis apart, posterior rim darkly sclerotised; copulatory ducts at entrance with well-defined atrium, fairly wide and with coiled lumen over entire length, ending in small, ill-defined spermathecae; fertilisation ducts pointing backward. Copulatory openings provided with piriform atrium with internal spikes, followed by broad copulatory ducts, also with internal spikes and running forward, thence backward, curved towards the centre, ending in a globular spermatheca hardly wider than ducts; fertilisation ducts thin, posterior, sickle-shaped sclerites oriented outward.

Male

Unknown.

Distribution

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

Figures

Fig. 12. Andromma cyamos sp. nov., ♀, holotype (BE_RMCA_ARA.Ara 155566). A. Habitus, dorsal view. B. Same, ventral view. C–D. Epigyne, ventral view. E–F. Same cleared, dorsal view. Scale bars: A–B =1 mm; C–D= 0.2 mm; E–F= 0.1 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).