Emertongone montifera Lin & Lopardo & Uhl 2022
Creators: name: Lin, Shou-Wang
name: Lopardo, Lara
name: Uhl, Gabriele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Linyphiidae
Emertongone

description: EMERTONGONE MONTIFERA (EMERTON, 1882) COMB.NOV.
(FIGS 7A, 66, 67C, 68C; SUPPORTING INFORMATION, FIG. S5B)
Lophocarenum montiferum Emerton, 1882: 47, pl. 13, fig. 2 (Dmf).
Gongylidium montiferum Simon, 1884: 500.
Erigone montifera Marx, 1890: 535.
Neriene montifera Simon, 1894: 633. Oedothorax montiferus Crosby, 1905: 312, 335. Diplocephalus montiferus Banks, 1916: 73.
Oedothorax montiferus Bishop & Crosby, 1935: 266, pl. 22, figs 74–78 (mf).
Oedothorax montiferus Kaston, 1948: 173, figs 486– 492 (mf).
Oedothorax montifer Paquin & Dupérré, 2003: 115, figs 1186–1189 (mf).
Type material: Not designated. Type locality: Brookline and Salem, Mass. (Bishop & Crosby 1935). The clear illustrations of the male prosomal and palpal structures and epigyne in the original description allow the unambiguous identification of this species.
Examined material: USA: Pennsylvania, Lower Friederick Township (40°16’ N, 75°30’ W), 4♂ 3♀ iii.1954, Wilton Ivie coll. & det; Massachusetts, Middlwsex, Peperell, 1♀ 24.x.1970, det. Platnick; Massachusetts, Brookline (42°19’ N, 71°6’ W), 1♂ 1♀ 10.vi.1873, coll. J. H. Emerton; Ohio, Wayne County, Neil McCoy’s Woods, under rotting wood, 2♀ 25.iv.1959, J. A. Beatty.
Description:
Male (Pennsylvania): Total length: 1.70. Prosoma: 0.89 long, 0.67 wide, post-PME region largely elevated, with post-PME groove (Fig. 7A). Eyes: AME-AME: 0.02, AME width: 0.04, AME-ALE: 0.12, ALE width: 0.06, ALE-PLE: 0.01, PLE width: 0.05, PLE-PME: 0.02, PME width: 0.04, PME-PME: 0.31. Clypeus: hirsute. Sternum: 0.48 long, 0.45 wide. Chelicerae: stridulatory striae rows widely and evenly spaced (Fig. 67C). Legs: tibia chaetotaxy 2-2-1-1, dorsal proximal macroseta on tibia I, II, III and IV 0.35, 0.33, 0.33 and 0.49 times diameter of tibia, respectively; Tm I: 0.61. Metatarsi I–III with trichobothrium, IV without trichobothrium. Pedipalp: PC base visible from dorsal view, distal seta distally situated, distal clasp small; PT without papillae; TS absent; MSA round; DSA complex (Fig. 66A); EM arised from distal part of DSA; R and E fused; E prolaterally spiral, tip retrolateral to DSA; TP, ARP, LER, and VRP absent (Fig. 66C, D). Opisthosoma: evenly coloured, dark grey (Fig. 68C).
Female (Pennsylvania): Total length: 1.70. Prosoma: 0.69 long, 0.65 wide. Eyes: AME-AME: 0.02, AME width: 0.04, AME-ALE: 0.04, ALE width: 0.06, ALE- PLE: 0.01, PLE width: 0.06, PLE-PME: 0.02, PME width: 0.05, PME-PME: 0.1. Clypeus: hirsute. Sternum: 47 long; 42 wide. Legs: tibia chaetotaxy 2-2-1-1, dorsal proximal macroseta on tibia I, II, III and IV 0.79, 0.77,
0.71 and 0.82 times diameter of tibia, respectively; Tm I: 0.56. Epigyne: dorsal plate extended anteriorly, bordering ventral plate by two lateral slits and an anterior slit, CO at lateral ends of anterior slit (Fig. 66E–G). Opisthosoma: evenly coloured, dark grey.
Variation: The measurements are based on examined material.
Males (N = 5, means in parentheses): Total length 1.70 – 1.89 (1.79). Prosoma: 0.86 – 0.95 (0.89) long, 0.66 – 0.75 (0.68) wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 0.29 – 0.35 (0.32), 0.25 – 0.33 (0.30, N = 3), 0.19–0.33 (0.27, N = 4) and 0.30 – 0.49 (0.42) times diameter of tibia, respectively; Tm I: 0.53 – 0.61 (0.56).
Females (N = 7, means in parentheses): Total length 1.70 – 2.37 (2.09). Prosoma: 0.69 – 0.91 (0.81) long, 0.62 – 0.77 (0.69) wide. Legs: dorsal proximal macroseta on tibia I, II, III and IV 0.46 – 0.80 (0.69, N = 3), 0.52 – 0.78 (0.66, N = 4), 0.44 – 0.71 (0.58, N = 4) and 0.57 – 0.82 (0.72, N = 4) times diameter of tibia, respectively; Tm I: 0.53 – 0.62 (0.57).
Distribution: USA.
Habitat: Maple swamps (Emerton, 1882).
description: Published as part of 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), pp. 417-584 in Zoological Journal of the Linnean Society 195 on pages 525-529, DOI: 10.1093/zoolinnean/zlab033, http://zenodo.org/record/6967774