Andromma alvoculatum, 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 : 16-18

Andromma alvoculatum sp. nov.

urn:lsid:zoobank.org:act:B65FE230-EC50-4B9C-B560-A6DF1F931096

Figs 8 , 38

Diagnosis

The female of Andromma alvoculatum sp. nov. is characterized by widely separated copulatory openings surrounded by a spiralled sclerotised rim.

Etymology

The species name is an adjective combining the Latin words ‘ alvus ’ and ‘ oculus ’, referring to the epigyne, which looks like two eyes on the belly ( Fig. 8B ).

Type material

Holotype

D.R. CONGO • ♀; Parc National Albert , sect. Ruwenzori , Kyandolire, lieu dit Camp des Gardes; 0°20′ N, 29°49′ E; 1700 m a.s.l.; 17 Oct. 1952; G.F. De Witte leg.; BE_RMCA_ARA.Ara 240739 .

Description

Female (holotype, Fig. 8 )

MEASUREMENTS. Total length 7.45. Carapace length 2.49, width 2.13, height 0.92.

COLOUR ( Fig. 8A–B ). Carapace orange, gradually paler towards posterior margin; AME rim dark; fovea reddish; chelicerae, palps and legs orange; endites yellowish orange, paler along median and anterior margins; labium orange, paler in distal half; sternum orange with thin dark brown margin and brown precoxal triangles ( Fig. 8B ); abdomen cream; spinnerets yellow.

PROSOMA. Fovea pronounced, length 0.43, anterior end 1.21 from PME. MOQ length 0.30, anterior width 0.28, posterior width 0.33. AER slightly recurved from above, width 0.67, PER procurved from above, width 0.71. All eyes circular; AME 0.13, ALE 0.10, PLE 0.08, PME 0.02; AME–AME: 0.02, AME– ALE: 0.12, ALE–PLE: 0.02, PME–PME: 0.25. Clypeus vertical, 0.12, with six long setae. Chelicerae with dorsal and ventral longitudinal groups of long setae; anterior margin with three teeth, the most proximal the smallest, and one small somewhat slightly more inward. Chilum poorly developed, two sclerites, each 0.03 high, 0.16 wide. Sternum 1.42 long and as wide.

LEG SPINATION. All femora with one dorsal spine, F I pl 1; T I v 2-2-2-2-2; Mt I v 2-2-2; T II v 2-2-2-2; Mt II v 2-2-2; T III pl 1 rl 1 v 1-2; Mt III pl 1 rl 1 v 1-2; T IV rl 1 v 1-2; Mt IV v 2-2.

LEG I MEASUREMENTS. Fe: 2.13, P: 0.71, T: 1.99, Mt: 1.85, t: 1.21; total: 7.89.

LEG FORMULA. 4123.

PALP. Female palpal tarsus curved, with scopula.

EPIGYNE ( Fig. 8C–F ). Roughly rectangular area, wider than long, with posterior margin recurved; widely separated copulatory openings with transverse oval membrane, slightly less than twice their longest diameter apart, surrounded by broad, spiralled, sclerotised border; broad, coiled copulatory ducts end in widely separated, subglobular spermathecae.

Male

Unknown.

Distribution

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

Figures

Fig. 8. Andromma alvoculatum sp. nov., ♀, holotype (BE_RMCA_ARA.Ara 240739). 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–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).