Chrosiothes murici, Rodrigues, 2017

Rodrigues, Everton Nei Lopes, 2017, Six new species and new records of the spider genus Chrosiothes from Brazil with the description of the female of Chrosiothes venturosus Marques & Buckup, 1997 (Araneae, Theridiidae, Spintharinae), Zootaxa 4329 (3), pp. 219-236: 224-226

publication ID

https://doi.org/10.11646/zootaxa.4329.3.2

publication LSID

lsid:zoobank.org:pub:252E55E4-A391-4970-8C77-34D8A5D1Caf0

persistent identifier

http://treatment.plazi.org/id/735587E6-FFB7-D22C-FF1B-F8C6B0A522F3

treatment provided by

Plazi

scientific name

Chrosiothes murici
status

new species

Chrosiothes murici   new species

Figs. 10–12 View FIGURES 7 – 12 , 24, 25 View FIGURES 24 – 28 , 30

Type material. Holotype. Brazil: Alagoas, Murici, Estação Ecológica de Murici , 09°15’S; 35°51’W, 16.IX.2003, Equipe Biota leg., 1M, night manual collection ( IBSP 209894 View Materials ) GoogleMaps   . Paratypes Brazil: Alagoas, Murici, Estação Ecológica de Murici , 09°15’S; 35°51W, 18.IX.2003, Equipe Biota leg., 1F, night manual collection ( IBSP 209895 View Materials )   . Bahia, Una, Reserva Biológica de Una , 15°10’S; 39°03’W, 13.IV.1998, A. D. Brescovit leg, 1F ( IBSP 18243 View Materials ) GoogleMaps   .

Diagnosis. Males are similar to C. venturosus Marques & Buckup, 1997   (see Marques & Buckup, 1997, fig. 7) by the conspicuous conductor apex and by the shape of embolus base, but differ from this species by the absence of denticles along the edge of the conductor ( Fig. 10 View FIGURES 7 – 12 ) and trajectory of the embolus that loop far from the tegulum edge ( Fig. 10 View FIGURES 7 – 12 ). Females resemble those of C. jamaicensis Levi, 1964   (see Levi, 1964b, figs. 28, 29) by the presence of two copulatory openings ( Fig. 11 View FIGURES 7 – 12 ) but differ by the openings farther from the posterior margin of epigynum ( Fig. 11 View FIGURES 7 – 12 ) and by the larger reniform spermathecae ( Fig. 12 View FIGURES 7 – 12 ).

Description. Male holotype (from Estação Ecológica de Murici, IBSP 209894). Total length 1.89. Carapace length 0.88, width 0.75. Clypeus height 0.14. Sternum length 0.56, width 0.44. Abdomen length 1.09, width 0.93, height 0.72. Leg formula I/IV/II/III; segment length (I/II/III/IV): femora 1.15/0.86/0.56/0.96; patellae+tibiae 1.32/ 0.84/0.63/1.13; metatarsi+tarsi 1.49/0.92/0.77/1.47; total 3.96/2.62/1.97/3.57. Carapace orange-brown with dark brown pigments medially and laterally, semicircular, cephalic area higher ( Fig. 24 View FIGURES 24 – 28 ). Chelicerae orange-brown. Sternum darker. AME and ALE with same diameter, bigger than PME and PLE. Legs pale yellow with darkened spots. Pentagonal abdomen with a pair of lateral-median tubercles, dorsally with median-anterior portion dark brown and posterior-median portion pale yellow ( Fig. 24 View FIGURES 24 – 28 ). Ventrally darker, with two longitudinal depigmented strips. Spinnerets pale yellow. Palp with conductor and embolus long, exceeding the margin of cymbium ( Fig. 10 View FIGURES 7 – 12 ). Embolus with large base ( Fig. 10 View FIGURES 7 – 12 ). Conductor without denticles and tegulum circular very developed nonsclerotized ( Fig. 10 View FIGURES 7 – 12 ).

Female paratype (from Estação Ecológica de Murici, IBSP 209895). Total length 4.16. Carapace length 1.45, width 1.30. Clypeus height 0.21. Sternum length 0.84, width 0.67. Abdomen length 3.01, width 3.27, height 2.49. Leg formula I/IV/II/III; segment length (I/II/III/IV): femora 2.22/1.40/1.11/2.22; patellae+tibiae 1.99/1.44/1.19/ 1.80; metatarsi+tarsi 3.17/1.97/1.61/3.29; total 7.39/4.83/3.92/7.32. Carapace ( Fig. 25 View FIGURES 24 – 28 ), chelicerae, sternum and legs dark red-brown, except femur III orange-brown. ALE and PLE with same diameter and smaller than the other eyes; PME and AME bigger than the other eyes. Abdomen ( Fig. 25 View FIGURES 24 – 28 ) wider than long, with two median transverse brown bands and scattered brown spots and two lateral-median tubercles. Ventrally brown, with depigmented spots. Spinnerets orange-brown. Epigynum with a slightly sclerotized plate, wider than long ( Fig. 11 View FIGURES 7 – 12 ); with two copulatory opening in the media-posterior portion of epigynum ( Fig. 11 View FIGURES 7 – 12 ). Internal genital with larger reniform spermathecae ( Fig. 12 View FIGURES 7 – 12 ); fertilization ducts short and coiled; copulatory ducts short and sclerotized ( Fig. 12 View FIGURES 7 – 12 ).

Remark. Males and females were collected together in Estação Ecológica de Murici, Murici, Alagoas, Brazil.

Distribution. Brazil (Alagoas and Bahia).

IBSP

Instituto Biologico de Sao Paulo