Euryopis nasuta Rodrigues & Marta & Figueiredo 2021, new species
Creators: name: Rodrigues, Everton Nei Lopes
name: Marta, Kimberly S.
name: Figueiredo, Cassiano P.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Theridiidae
Euryopis
Euryopis nasuta

description: Euryopis nasuta new species
Figs. 3 A–D, 4 A–D, 8B, 9C, D, 10
LSIDurn:lsid:zoobank.org:act: 7A1C6E5A-90BE-48A3-919E-12CCC33BF8DC
Type material. Holotype. Brazil: Paraná: Palmas, Refugio de Vida Silvestre dos Campos de Palmas [Campos de Palmas Wildlife Refuge], 26°32’22.50”S, 51°39’11.93”W, 22–29.X.2018, G. Galeti et al. leg., 1M (IBSP 269920). Paratypes. Brazil: Paraná: Palmas, Refugio de Vida Silvestre dos Campos de Palmas, 26°32’22.50”S, 51°39’11.93”W, 22–29.X.2018, G. Galeti et al. leg., 1F (IBSP 269921); 22–29.X.2018, G. Galeti et al. leg., 1F (IBSP 269922); 22–29.X.2018, G. Galeti et al. leg., 1M (IBSP 269923); 22–29.X.2018, G. Galeti et al. leg., 1M (MCN 56851); 22–29.X.2018, G. Galeti et al. leg., 1M (MCTP 44012); 22–29.X.2018, G. Galeti et al. leg., 1M (IBSP 267941). All collected by pitfall-trap.
Etymology. The specific name is a reference to the somatic characteristic from the male of this species, which has a nose-like projection in the clypeus.
Diagnosis. Males of Euryopis nasuta n. sp. resemble those of Euryopis camis Levi, 1963 (see Levi, 1963, fig. 19) but E. nasuta n. sp. differs from E. camis by the sclerotized and elongated embolus (Fig. 8B), while the embolus is much less sclerotized and rounded in the later; by the different course of the ducts present in the tegulum in ventral view (Fig. 8B), and by the presence of nose-like projection in the clypeus (Fig. 3D), absent in E. camis. Females of E. nasuta n. sp. also resemble those of E. camis (see Levi, 1963, figs 17, 18) but differ from E. camis in having the copulatory opening positioned medially on the epigynal plate (Fig. 9C), while the latter species is posteriorly positioned.
Description. Male holotype (IBSP 269920). Total length 2.43. Carapace length 0.96, width 0.71. Clypeus height 0.31. Sternum length 0.60, width 0.52. Abdomen length 1.17, width 0.81, height 0.79. Leg formula IV/I/II/ III; segment length (I/II/III/IV): femora 0.48/0.42/0.42/0.56; patellae+tibiae 0.67/0.60/0.56/0.81; metatarsi+tarsi 0.72/0.60/0.62/0.79; total 1.87/1.62/1.60/2.16. Carapace oval (Fig. 3A), reddish brown, with blackened stripes. Chelicerae (Fig. 3B) pale orange. Eye diameter and interdistances: AME 0.04, PME 0.04, ALE 0.06, PLE 0.04, AME–AME 0.04, AME– ALE 0.02, PME–PME 0.06, PME–PLE 0.04. Clypeus present a nose-like projection (Fig. 3D). Sternum (Fig. 3B) lighter than the carapace, with blackened edges. Reddish brown elongated pedicel with two longitudinal blackish bands (Fig. 3A, B, D). Abdomen oval (Fig. 3A), darker than carapace. Spinnerets pale yellow. Cymbium oval in dorsal view; embolus sclerotized and distally pointed; conductor enlarged, and loop-like duct in the median apophysis (Fig. 8B).
Female paratype (IBSP 269921). Total length 2.49. Carapace length 0.94, width 0.71. Clypeus height 0.21. Sternum length 0.58, width 0.46. Abdomen length 1.42, width 0.98, height 0.79. Leg formula IV/I/II/III; segment length (I/II/III/IV): femora 0.48/0.42/0.42/0.56; patellae+tibiae 0.67/0.60/0.56/0.81; metatarsi+tarsi 0.72/0.60/0.62/0.79; total 1.87/1.62/1.60/2.16. Carapace oval (Fig. 4A), yellowish brown with darkened edges. Eye diameter and interdistances: AME 0.04, PME 0.04, ALE 0.06, PLE 0.06, AME–AME 0.06, AME–ALE 0.04, PME– PME 0.04 PME–PLE 0.04. Sternum scutiform (Fig. 4B), lighter than the carapace with blackened edges. Pedicel yellowish, shorter than in males (Fig. 4A, B). In dorsal view, abdomen oval (Fig. 4A), dark brown with irregular median yellow pattern. In ventral view, predominantly yellow with two black spots on the posterior laterals (Fig. 4B). Epigynum with a slightly sclerotized plate, wider than long. Copulatory opening oval, with well-developed ridge (Fig. 9C), located at the median-anterior area of epigynum (Fig. 9C) and internally with two pairs of round spermathecae, first pair of spermathecae larger (Figs 9C, D), short and coiled fertilization ducts (Fig. 9D) and uncoiled copulatory ducts (Fig. 9D).
Natural history. This species was collected at three different areas in the Atlantic forest (Campos de Palmas Wildlife Refuge), at two locations with riparian forest and at one location without riparian forest. A total of eight specimens were collected in an area with riparian forest and only one in a region without riparian forest.
Distribution. Brazil (state of Paraná, Fig. 10).
Additional material examined. Brazil. Paraná: Palmas (Campos de Palmas Wildlife Refuge 26°32’37.2”S, 51°38’40.1”W), 22–29.X.2018, G. Galeti et al. leg., 1M (MZUnisinos Ara00911); 22–29.X.2018, G. Galeti et al. leg., 1M (MZUnisinos Ara00912). All collected by pitfall trap.
description: Published as part of Rodrigues, Everton Nei Lopes, Marta, Kimberly S. & Figueiredo, Cassiano P., 2021, Description of four new species of the spider genus Euryopis Menge, 1868, with new records from Brazil (Araneae, Theridiidae, Hadrotarsinae), pp. 535-549 in Zootaxa 4966 (5) on pages 539-541, DOI: 10.11646/zootaxa.4966.5.3, http://zenodo.org/record/4745279