Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae)
Author
Lin, Shou-Wang
Author
Lopardo, Lara
Author
Uhl, Gabriele
text
Zoological Journal of the Linnean Society
2022
2021-11-20
195
417
584
journal article
115951
10.1093/zoolinnean/zlab033
75b10efe-a17d-4d10-b46e-094c6a7ebf01
0024-4082
6967774
BE2B3859-8F6A-4543-8A69-91840F82377B
HOLMELGONIA BASALIS
JOCQUÉ & SCHARFF, 1986
(
FIGS 19C
,
22C
,
24C
,
36
; SUPPORTING INFORMATION,
FIG. S2A
)
Elgonella basalis
Jocqué & Scharff, 1986: 12
, figs 18–25 (Dmf).
Elgonia basalis
Platnick, 1989: 232
.
Elgonia basalis
Scharff, 1990a: 25
, figs 44–46 (mf).
Holmelgonia basalis
,
Jocqué & Scharff, 2007: 161
.
Examined material:
Tanzania
,
Uzungwa Mts.
,
Mwanihana Forest
above
Sanje River
,
1700 m
,
1♂
1♀
15.viii.1982
, leg. M, Stoltze & N, Scharff (
ZMUC
)
;
same locality,
1800 m
,
pitfall trap
,
1♂
18.viii.1982
, leg. M, Stoltze & N, Scharff (
ZMUC
)
;
same locality,
1800 m
, litter,
1♀
15.viii.1982
, leg. M, Stoltze & N, Scharff (
ZMUC
)
.
Description:
Male (
ZMUC
,
15.viii.1982
):
Total length: 1.72. Prosoma: 0.79 long, 0.61 wide, without modification (
Fig. 19C
). Eyes: AME-AME: 0.02, AME width: 0.04, AME-ALE: 0.02, ALE width: 0.08, ALE-PLE: 0, PLE width: 0.09, PLE-PME: 0.08, PME width: 0.02, PME- PME: 0.03. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.44 long, 0.48 wide. Chelicerae: mastidia absent; stridulatory striae ridged, rows widely and evenly spaced (
Fig. 22C
). Legs: tibia chaetotaxy 2-2-1-1; dorsal proximal macroseta on tibia II, III and IV 2.24, 4.1 and 3.85 times diameter of tibia, respectively; Tm I: 0.60. All metatarsi with trichobothrium. Pedipalp: patella prolateral proximal vertical macrosetae absent; tibia with one prolateral, two retrolateral trichobothria; TPA large, base distant from C base, distal part as wide as base, with two protuberances at tip, each with a seta below (
Fig. 36A, C
); PC base not visible from dorsal view, distal setae close to distal clasp, distal-setae-bearing area wide, distal clasp without striae, clasp extended apically (
Fig. 36A
); T without papillae, PT apical part with long papillae; TS shot, slender (
Fig. 36D
); MSA present; DSA wide, truncated at tip (
Fig. 36A
); EM broad, flat, without papillae, not exceeding ARP; ARP pointed; LER absent; central embolar apophysis present; VRP long, with papillae close to tip; TP long, round at tip; E short and slender, slightly retrolaterally curved (
Fig. 36B
). Opisthosoma: dorsal pattern see
Fig. 24C
; PMS with mAP, AC absent; PLS with triad, one AC (
Fig. 36G
).
Figure 36.
Holmelgonia basalis
Jocqué & Scharff, 1986
. A–D, male right palp, images flipped horizontally. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, F, epigyne. E, ventral view. F, external morphology. G, male posterior median spinnerets and posterior lateral spinnerets. H, female right spinnerets. I, female right posterior lateral spinneret. Scale bars 0.1 mm.
Female:
Total length: 2.04. Prosoma: 0.88 long, 0.62 wide. Eyes: AME-AME: 0.02, AME width: 0.04, AME-ALE: 0.02, ALE width: 0.08, ALE-PLE: 0, PLE width: 0.07, PLE-PME: 0.04, PME width: 0.07, PME- PME: 0.03. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.5 long, 0.51 wide. Legs: tibia chaetotaxy 2-2-1-1; dorsal proximal macroseta on tibia I 2.85 times diameter of tibia, respectively; Tm I: 0.60. Epigyne: Clade 13 characteristic morphology, CO close to dorsal plate posterior margin (
Fig. 36E, F
). Opisthosoma dorsal pattern same as male; PMS with mAP, CY; PLS with triad, one AC, two CY (
Fig. 36H, I
).
Distribution:
Tanzania
.