Euryopis nasuta, Rodrigues & Marta & Figueiredo, 2021

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), Zootaxa 4966 (5), pp. 535-549: 539-541

publication ID

https://doi.org/10.11646/zootaxa.4966.5.3

publication LSID

lsid:zoobank.org:pub:86908B62-452C-447E-B412-0F7153E1C700

DOI

http://doi.org/10.5281/zenodo.4792381

persistent identifier

http://treatment.plazi.org/id/03FE8550-C421-4B0A-FF6A-FB043620FA7C

treatment provided by

Plazi

scientific name

Euryopis nasuta
status

new species

Euryopis nasuta   new species

Figs. 3 A–D View FIGURE 3 , 4 A–D View FIGURE 4 , 8B View FIGURE 8 , 9C, D View FIGURE 9 , 10 View FIGURE 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 View Materials ) GoogleMaps   . 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 View Materials ) GoogleMaps   ; 22–29.X.2018, G. Galeti et al. leg., 1F ( IBSP 269922 View Materials )   ; 22–29.X.2018, G. Galeti et al. leg., 1M ( IBSP 269923 View Materials )   ; 22–29.X.2018, G. Galeti et al. leg., 1M ( MCN 56851 View Materials )   ; 22–29.X.2018, G. Galeti et al. leg., 1M ( MCTP 44012 View Materials )   ; 22–29.X.2018, G. Galeti et al. leg., 1M ( IBSP 267941 View Materials )   . 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 View FIGURE 8 ), 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 View FIGURE 8 ), and by the presence of nose-like projection in the clypeus ( Fig. 3D View FIGURE 3 ), 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 View FIGURE 9 ), 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 View FIGURE 3 ), reddish brown, with blackened stripes. Chelicerae ( Fig. 3B View FIGURE 3 ) 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 View FIGURE 3 ). Sternum ( Fig. 3B View FIGURE 3 ) lighter than the carapace, with blackened edges. Reddish brown elongated pedicel with two longitudinal blackish bands ( Fig. 3A, B, D View FIGURE 3 ). Abdomen oval ( Fig. 3A View FIGURE 3 ), 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 View FIGURE 8 ).

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 View FIGURE 4 ), 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 View FIGURE 4 ), lighter than the carapace with blackened edges. Pedicel yellowish, shorter than in males ( Fig. 4A, B View FIGURE 4 ). In dorsal view, abdomen oval ( Fig. 4A View FIGURE 4 ), dark brown with irregular median yellow pattern. In ventral view, predominantly yellow with two black spots on the posterior laterals ( Fig. 4B View FIGURE 4 ). Epigynum with a slightly sclerotized plate, wider than long. Copulatory opening oval, with well-developed ridge ( Fig. 9C View FIGURE 9 ), located at the median-anterior area of epigynum ( Fig. 9C View FIGURE 9 ) and internally with two pairs of round spermathecae, first pair of spermathecae larger ( Figs 9C, D View FIGURE 9 ), short and coiled fertilization ducts ( Fig. 9D View FIGURE 9 ) and uncoiled copulatory ducts ( Fig. 9D View FIGURE 9 ).

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 View FIGURE 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.

MCN

McNeese State University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Theridiidae

Genus

Euryopis