Oedothorax gibbifer, (KULCZYNSKI, 1882)

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 : 442-444

OEDOTHORAX GIBBIFER (KULCZYŃSKI, 1882)

( FIGS 7Q , 8C , 9C , 15 ; SUPPORTING INFORMATION, FIG. S1C )

Erigone gibbifera Kulczyński ,, 1882a: 17 (Dmf).

Erigone gibbifera Kulczyński, 1882b: 21 , pl. 2, fig. 13 (Dmf).

Gongylidium cantalicum Simon, 1884: 480 , figs 255– 257 (Dmf).

Gongylidium gibbiferum Simon, 1884: 499 .

Neriene gibbifera Chyzer & Kulczyński, 1894: 94 , pl. 4, fig. 3 (mf).

Stylothorax gibbifera Reimoser, 1919: 72 .

Stylothorax cantalica Reimoser, 1919: 72.

Oedothorax cantalicus Simon, 1926: 453 , 523.

Oedothorax gibbifer Ovsyannikov, 1937: 90 , fig. 2 (f).

Oedothorax gibbifer Denis, 1947: 138 , figs 2B, 6E, 7E, 8E, 9D, 10F, 11E (mf).

Oedothorax gibbifer Vogelsanger, 1948: 54 , figs 6–8 (mf).

Oedothorax gibbifer Miller, 1971: 262 , pl. LIV, figs 10–12 (f).

Oedothorax gibbifer Růžička, 1978: 195 , figs 8C, D, 9C (f).

Oedothorax gibbifer Thaler, 1978: 186 , figs 15–17 (m).

Oedothorax gibbifer Bosmans, 1985: 65 , figs 12, 28, 34 (m).

Oedothorax gibbifer Heimer & Nentwig, 1991: 224 , fig. 604 (mf).

Type material: No type data in Kulczyński (1882a). Nevertheless, the unique palpal tibia shape and male prosomal modification illustrated in the original description suffice for an identification of this species.

Examined material: Austria: Lower Austria, Scheibbs District, Gaming, Seebachlacke , 2♀ 17.vi.1972, leg. F. Ressl, det. J. Wunderlich ( SMF 62907) . No collecting data: 1♂ 1♀, leg. Miller, det. Wunderlich xii.1968 ( SMF 24213/2); 1♂ 2♀ ( SMF 59615)

Diagnosis:

Males: Can be distinguished from Oe. retusus and Oe. apicatus by the small palpal tibial prolateral apophysis, the prolaterally oriented basal thorn ( Fig. 15C ; retrolaterally oriented in the other two species), and the unbroadened basal part of embolus ( Fig. 15B ; broadened in the two other species).

Females: Can be distinguished from Oe. meridionalis, Oe. agrestis, Oe. fuscus and Oe. tingitanus by having one sub-AME seta (two in the latter four species). Distinguished from Oe. meridionalis and Oe. trilobatus by the more anteriorly located copulatory openings ( Fig. 15G ); from Oe. gibbosus by the less convergent borders between the dorsal and ventral plates and by the lateral copulatory opening ( Fig. 15G ; posterior in Oe. gibbosus , Fig. 6F ); from Oe. apicatus and Oe. retusus by the broader posterior width of the epigynal dorsal plate, and by the dorsal plate surface wrinkles converging towards the center of posterior margin ( Fig. 15G ; wrinkles diverging towards posterior margin in the latter two species, Figs 12F , 16E ).

Description:

Male ( SMF 24213/2): Total length: 2.46. Prosoma: 1.15 long, 0.87 wide, postocular region elevated, with lateral sulci and pits ( Fig. 7Q ). Eyes: AME-AME: 0.04, AME width: 0.04, AME-ALE: 0.05, ALE width: 0.08, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.07, PME width: 0.06, PME-PME: 0.07. Clypeus: not hirsute, one sub-AME seta. Sternum: 0.68 long, 0.62 wide. Chelicerae: mastidia absent, stridulatory striae scaly, widely and evenly spaced ( Fig. 8C ). Legs: dorsal proximal macroseta on tibia I and II 1.24 and 1,18 times diameter of tibia, respectively; Tm I: 0.79. Pedipalp: TPA short; basal thorn long, pointed prolaterally ( Fig. 15C ); PC distal setae adjacent to basal setae ( Fig. 15A ); T without papillae, PT with long papillae, TS short, without papillae ( Fig. 15D ); DSA tip narrow ( Fig. 15A ); EM short, cylindrical, proximally oriented); TP without small protuberances; E not broadened at basal part ( Fig. 15B, F ). Opisthosoma: brown, evenly coloured ( Fig. 9C ).

Female ( SMF 62907): Total length: 3.02. Prosoma: 1.16 long, 0.90 wide. Eyes: AME-AME: 0.02, AME width: 0.07, AME-ALE: 0.03, ALE width: 0.10, ALE-PLE: 0.01, PLE width: 0.08, PLE-PME: 0.05, PME width: 0.07, PME-PME: 0.08. Clypeus: not hirsute, one sub- AME seta. Sternum: 0.71 long; 0.66 wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 1.76, 1.90, 2.12 and 2.13 times diameter of tibia, respectively; Tm I: 0.62. Chelicerae: stridulatory striae scale-like, rows widely and evenly spaced. Epigyne: Clade 13 characteristic morphology, borders between dorsal and ventral plates slightly converging anteriorly, copulatory duct short ( Fig. 15G–J ). Opisthosoma: brown, evenly coloured.

Variation: The measurements are based on examined material.

Males (N = 2, means in parentheses): Total length 2.40–2.46. Prosoma: 1.09–1.15 long, 0.87–0.87 wide. Legs: Tm I: 0.74–0.76.

Females (N = 4, means in parentheses): Total length 3.02–3.86 (3.42). Prosoma: 1.16–1.44 (1.34) long, 0.90– 1.09 (1.03) wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 1.17–1.76 (1.49), 1.54–1.90 (1.69), 1.92–2.12 (2.02, N = 3) and 1.88–2.15 (2.05) times diameter of tibia, respectively; Tm I: 0.62–0.81 (0.75).

Distribution: Poland, France, Russia, Switzerland, Czech Republic, Germany, Austria.

Habitat: Wet habitats, swampy areas, from low areas up to 2450 m.

Figures

Figure 1. The consensus tree of 296 most-parsimonious trees from the analysis of the expanded matrix of Miller & Hormiga (2004) and Frick et al.(2010) (Matrix I), with Bremer/Jackknife support values shown beside nodes. Newly appended taxa in bold.

Figure 6. Oedothorax gibbosus (Blackwall, 1841).A–E, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, apical view. F–H, epigyne. F, ventral view. G, dorsal view. H, external morphology. I, male spinnerets. Scale bar 0.1 mm.

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 12. Oedothorax apicatus (Blackwall, 1850). A–D, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, male right palp, expanded, image flipped horizontally. F–H, epigyne. F, ventral view. G, dorsal view. H, external morphology. Scale bar 0.1 mm.

Figure 15. Oedothorax gibbifer (Kulczyński, 1882). A–F, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E, copulatory bulb, apical view. F, embolic division, ventral view. G–J, epigyne. G, ventral view. H, dorsal view. I, anterior view. J, external morphology. Scale bar 0.1 mm.

Figure 16. Oedothorax retusus (Westring, 1851). A–D, male left palp. A, retrolateral view. B, prolateral view. C, dorsal view. D, ventral view. E–G, epigyne. E, ventral view. F, dorsal view. G, external morphology. H, male right spinnerets. Scale bar 0.1 mm.