Andromma heligmos, 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 : 51

Andromma heligmos sp. nov.

urn:lsid:zoobank.org:act:71E0CD92-54DD-421E-811C-C2C2CB141B96

Figs 26 , 40

Diagnosis

The female of Andromma heligmos sp. nov. is characterized by the epigyne with copulatory openings with posterior margin delimited by an obliquely sinuous sclerotised margin; the copulatory duct is unusual by its strongly curved course and the poorly delimited spermatheca.

Etymology

The species name is a noun in apposition from the Greek ‘ἑλιγμός’, meaning ‘detour’, as the copulatory duct makes a large detour before entering the spermatheca ( Fig. 26E–F ).

Type material

Holotype

D.R. CONGO • ♀; N-Kivu Province , Visiki, Forêt de Visiki; 0°03′ N, 29°15′ E; 27 Dec. 1971; M. Lejeune leg.; BE_RMCA_ARA.Ara 140917 .

Description

Female (holotype, Fig. 26 )

MEASUREMENTS. Total length 6.0. Carapace length 2.27, width 1.99, height 0.920.

COLOUR ( Fig. 26A–B ). Cephalothorax entirely yellowish orange; carapace with faint radiating striae; abdomen including spinnerets cream.

PROSOMA. Fovea faint, length 0.50, anterior end 1.35 from PME. MOQ length 0.30, anterior width 0.34. AER straight from above, width 0.34. AME circular, other eyes oval; AME 0.15, ALE 0.10, PME 0.08, PLE 0.10; AME–AME: 0.05, AME–ALE: 0.07, PME–PME: 0.21. Clypeus vertical, 0.08, with seven long setae. Chilum absent. Chelicerae: promargin with three teeth of equal size, and two tiny teeth at the base of the fang. Sternum 1.21 long and as wide.

LEG SPINATION. All femora with one dorsal spine, F I pl 1.

LEG I MEASUREMENTS. Fe: 2.50, P: 0.78, T: 2.27, Mt: 2.06, t: 1.49; total: 9.10.

LEG FORMULA. 4123.

PALP. Female palpal tarsus curved, with sparse scopula.

EPIGYNE ( Fig. 26C–F ). Roughly trapezoidal area; copulatory openings with posterior margin delimited by an obliquely sinuous sclerotised margin; copulatory ducts wide, with internal spikes, first running forward and then backwards, ending poorly delimited piriform spermatheca with posteriorly oriented sickle-shaped sclerites. Fertilisation duct indistinct.

Male

Unknown.

Distribution

Known only from the type locality in D.R. Congo ( Fig. 40 ).

Figures

Fig. 26. Andromma heligmos sp. nov., ♀, holotype (BE_RMCA_ARA.Ara 140917). A. Habitus, dorsal view. B. Same, ventral view. C–D. Epigyne, ventral view. E–F. Same cleared, dorsal view. Scale bars: A–B =2 mm; C–F =0.1 mm.

Fig. 40. Distribution map of species ofAndromma Simon, 1893 (circles if shape of symbol not specified). A. anochetorum Simon, 1909 (white), A. deogratias sp. nov. (blue), A. dicranobelos sp. nov. (black), A. ghesquierei sp. nov. (fuchsia), A. heligmos sp. nov. (green triangle), A. juakalyi sp. nov. (yellow triangle), A. katangensis sp. nov. (green), A. ophiophagum sp. nov. (white squares), A. raffrayi Simon, 1899 (red) and A. velum sp. nov. (yellow).