Oedothorax paludigena, SIMON, 1926

Lin, Shou-Wang, Lopardo, Lara & Uhl, Gabriele, 2022, Evolution of nuptial-gift-related male prosomal structures: taxonomic revision and cladistic analysis of the genus Oedothorax (Araneae: Linyphiidae: Erigoninae), Zoological Journal of the Linnean Society 195, pp. 417-584 : 446-447

OEDOTHORAX PALUDIGENA SIMON, 1926

( FIGS 7T , 8F , 9F , 13 )

Oedothorax fuscus paludigena Simon, 1926: 453 , 523 (Dm).

Oedothorax fuscus paludigena Denis, 1947: 142 , figs 6I, 7G, 8G (m).

Oedothorax paludigena Millidge, 1975: 120 , figs 1–9 (m, Df, elevated from subspecies).

Oedothorax paludigena Bosmans, 1985: 65 , figs 17, 24, 35 (m).

Oedothorax paludigenus Canard & Cruveillier, 2016: 44 (proposed correction of gender ending).

Oedothorax paludigena Pantini & Mazzoleni, 2018: 35 , fig. 6a–e (mf).

Type material: Lectotype ♂ [designated by Millidge (1975)] and syntype ♀: France: Bouches-du-Rhône, Martigues, Alpes-Maritimes, mouth of the Var, leg. de Dalmas, 1918 (Tube No. 4476, MNHN, not examined).

Examined material: Greece: Epirus, between Salaora and Arta, at the border of lagoon, 1♀ 28.iii.1978, leg. S. Vit ( MHNG) . France: Corsica, 15 km north of l’Île- Rousse, from humid leaf litter of an alder forest in Ostriconi , 2♂ vi.1984, leg. & det. H. G. Müller ( MHNG) .

Diagnosis:

Males: The lack of prosomal humps, pits or sulci distinguishes this species from the ‘ gibbosus -like species group’ (Clade 28) and Oe. meridionalis . Distinguished from Oe. fuscus, Oe. agrestis and Oe. tingitanus by having one sub-AME seta (two in the latter three species) and the absence the palpal tibial basal thorn.

Females: Can be distinguished from other species by the epigynal configuration and number of sub- AME setae (one; two in Oe. fuscus, Oe. agrestis, Oe. meridionalis and Oe. tingitanus ). Distinguished from Oe. gibbosus, Oe. apicatus, Oe. retusus and Oe. gibbifer by the more anteriorly situated copulatory openings; from Oe. trilobatus by the much shorter copulatory ducts.

Description:

Male ( MHNG): Total length: 2.00. Prosoma: 0.83 long, 0.86 wide, unmodified ( Fig. 7T ). Eyes: AME-AME: 0.04, AME width: 0.05, AME-ALE: 0.02, ALE width: 0.07, ALE-PLE: 0, PLE width: 0.06, PLE-PME: 0.05, PME width: 0.06, PME-PME: 0.06. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.5 long; 0.5 wide. Chelicerae: mastidia absent; stridulatory striae scaly, rows widely and evenly spaced ( Fig. 8F ). Legs: dorsal proximal macroseta on tibia I, II, III and IV 1.35, 1.27, 1.47 and 1.31 times diameter of tibia, respectively; Tm I: 0.61. Pedipalp: TPA triangular, distal part blunt and scaly, with small protuberances on both sides of tip; BT absent; PC distal setae at median position ( Fig. 13A ); T papillae scale-like, PT with long-palpillae; TS short, without papillae ( Fig. 13D ); DSA tip round ( Fig. 13A ); EM long, cylindrical, distally oriented, with long papillae); ARP pointed, prolaterally spiral; TP with several small protuberances; E not broadened at basal part ( Fig. 13B ). Opisthosoma: brown, evenly coloured ( Fig. 9F ); spinnerets see Fig. 13H .

Female ( MHNG): Total length: 2.85. Prosoma: 1.00 long, 0.80 wide. Eyes: AME-AME: 0.04, AME width: 0.07, AME-ALE: 0.02, ALE width: 0.08, ALE-PLE: 0.01, PLE width: 0.07, PLE-PME: 0.06, PME width: 0.07, PME-PME: 0.06. Clypeus: not hirsute, one sub- AME seta. Sternum: 0.62 long; 0.61 wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 1.54, 1.55, 1.78 and 1.85 times diameter of tibia, respectively; Tm I: 0.65. Epigyne: Clade 13 characteristic morphology, dorsal plate posterior margin wide, borders between dorsal and ventral plates strongly converging anteriorly, CO posteriorly directed, located posterior to spermathecae, CD of shorter length ( Fig. 13F, G ). Opisthosoma: brown, evenly coloured; spinnerets see Fig. 13I .

Distribution: France, Corsica, Sardinia, Italy, Greece.

Figures

Figure 7. Male prosomal morphology, lateral.A, Emertongone montifera (Emerton, 1882) (Paquin & Dupérré, 2003, fig. 1187). B, Shaanxinus mingchihensis Lin, 2019 (traced from photograph). C, ‘Oedothorax’ paracymbialis Tanasevitch, 2015 (traced from photograph). D, ‘Oe.’ kodaikanal Tanasevitch, 2015 (traced from photograph). E, ‘Oe.’ cunur Tanasevitch, 2015 (traced from photograph). F, ‘Oe.’ stylus Tanasevitch, 2015 (traced from photograph). G, Atypena cirrifrons (Heimer, 1984) (traced from photograph). H, A. formosana (Oi, 1977) (Oi, 1977, fig. 2). I, ‘Oe.’ nazareti Scharff, 1989 (Scharff, 1989: fig. 7). J, Gongylidium rufipes (Linnaeus, 1758) (traced from photograph). K, Ummeliata insecticeps (Bösenberg & Strand, 1906) (Tu & Li 2004: fig. 8A). L, U. esyunini (Zhang, Zhang & Yu, 2003) (Zhang et al., 2003, fig. 2A). M, Hylyphantes graminicola (Sundevall, 1830) (traced from photograph). N, Tmeticus tolli Kulczyński, 1908 (traced from photograph). O, Oedothorax gibbosus (Blackwall, 1841) [Roberts, 1987: fig. 21 (e)]. P, Oe. trilobatus (Banks, 1896) (Bishop & Crosby, 1935: fig. 79). Q, Oe. gibbifer (Kulczyński, 1882) (Heimer & Nentwig, 1991: fig.604.5).R, Oe.apicatus (Blackwall, 1850) [Roberts, 1987: fig.23 (d)].S, Oe. retusus (Westring, 1851) [Roberts, 1987: fig. 23 (c)]. T, Oe. paludigena Simon, 1926 [Millidge, 1975: fig. (5)]. U, Oe. meridionalis Tanasevitch, 1987 (Tanasevitch, 1987: fig. 107).V, Oe. agrestis (Blackwall, 1853) (Roberts, 1987: fig. 23B).W, Oe. fuscus (Blackwall, 1834) (Roberts, 1987: fig. 23A). X, Oe. tingitanus (Simon, 1884) (Denis, 1968: fig. 11).

Figure 8. Male chelicerae, stridulatory striae on lateral side. A, Oedothorax gibbosus (Blackwall, 1841). B, Oe. trilobatus (Banks, 1896). C, Oe. gibbifer (Kulczyński, 1882). D, Oe. apicatus (Blackwall, 1850). E, Oe. retusus (Westring, 1851). F, Oe. paludigena Simon, 1926. G, Oe. meridionalis Tanasevitch, 1987. H, Oe. agrestis (Blackwall, 1853). I, Oe. fuscus (Blackwall, 1834). J, Oe. tingitanus (Simon, 1884). Scale bars 0.05 mm.

Figure 9. Male opisthosoma, dorsal view. A, Oedothorax gibbosus (Blackwall, 1841). B, Oe. trilobatus (Banks, 1896). C, Oe. gibbifer (Kulczyński, 1882). D, Oe. apicatus (Blackwall, 1850). E, Oe. retusus (Westring, 1851). F, Oe. paludigena Simon, 1926. G, Oe. meridionalis Tanasevitch, 1987. H, Oe. agrestis (Blackwall, 1853). I, Oe. fuscus (Blackwall, 1834). J, Oe. tingitanus (Simon, 1884). Scale bars 0.1 mm.

Figure 13. Oedothorax paludigena Simon, 1926. A–E, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, apical view. F, G, epigyne. F, ventral view. G, external morphology. H, male spinnerets. I, female left spinnerets. Scale bar 0.1 mm.