Chrosiothes diabolicus

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, Spinthari, Zootaxa 4329 (3), pp. 219-236: 221-222

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-FFB0-D228-FF1B-FF63B65626A9

treatment provided by

Plazi

scientific name

Chrosiothes diabolicus
status

new species

Chrosiothes diabolicus  new species

Figs. 1–3View FIGURES 1 – 6, 18, 19View FIGURES 18 – 23, 30

Type material. Holotype. Brazil: São Paulo, Teodoro Sampaio, Parque Estadual do Morro do Diabo , 22°31’S; 52°18’W, 29.III.2003, Equipe Biota leg., 1M, collected by beating tray ( IBSP 209874View Materials)GoogleMaps  . Paratypes. Brazil: São Paulo, Teodoro Sampaio, Parque Estadual do Morro do Diabo , 22°31’S; 52°18’W, 24–31.III.2003, Equipe Biota leg., 1F, collected by beating tray ( IBSP 209875View Materials)GoogleMaps  ; São Paulo, Teodoro Sampaio, Parque Estadual do Morro do Diabo , 22°31’S; 52°18’W, 24–31.III.2003, Equipe Biota leg., 1F, night manual collection ( MCTP 40134View Materials)GoogleMaps  ; Paraná, Foz do Iguaçu, Parque Nacional de Foz do Iguaçu , 25°36’S; 54°25’W, 09.II.2002. Equipe Biota leg., 1M, 1F, night manual collection ( IBSP 209878View Materials)GoogleMaps  ; Paraná, Foz do Iguaçu, Parque Nacional de Foz do Iguaçu , 25°36’S; 54°25’W, 09.III.2003, Equipe Biota leg., 1F ( IBSP 209879View Materials)GoogleMaps  ; Mato Grosso do Sul, Bonito  , Baia Bonita, 21°09’S; 56°26’W, 18.X.2002, Equipe Biota leg., 1M, collected by beating tray ( IBSP 209880View Materials)GoogleMaps  ; Mato Grosso do Sul, Bonito  , Baia Bonita, 21°09’S; 56°26’W, 17.X.2002, Equipe Biota leg., 1F, collected by beating tray ( IBSP 209881View Materials)GoogleMaps  ; Minas Gerais, Juatuba , COPASA, 20°10’S; 44°21’W, 22.IV.2002. Equipe. Biota leg., 1F, night manual collection ( IBSP 209882View Materials)GoogleMaps  ; Minas Gerais, Juatuba , COPASA, 20°10’S; 44°21’W, 22.IV.2002. Equipe. Biota leg., 1F, night manual collection ( MCTP 40133View Materials)GoogleMaps  ; São Paulo, Santa Rita do Passo Quatro, Parque Estadual de Vassununga , 21°43’S; 47°35’W, 22.III.2002, Equipe Biota leg., 1F, collected by beating tray ( IBSP 209877View Materials)GoogleMaps  .

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Males are similar to C. venturosus Marques & Buckup, 1997  (see Marques & Buckup 1997, fig. 7) by the conspicuous and sinuous conductor apex, but differ from this species by the presence of numerous denticles along the edge of the conductor ( Fig. 1View FIGURES 1 – 6) and trajectory of the embolus, that loops far from the tegulum edge ( Fig. 1View FIGURES 1 – 6). Females resemble C. niteroi Levi, 1964  (see Levi, 1964b, figs. 31, 32) by the presence of a single and small copulatory opening, but differ by the copulatory openings farther from the posterior margin of epigynum ( Fig. 2View FIGURES 1 – 6), by the reniform spermathecae and the short, uncoiled copulatory ducts ( Fig. 3View FIGURES 1 – 6).

Description. Male holotype (from Parque Estadual do Morro do Diabo, IBSP 209874). Total length 1.97. Carapace length 0.83, width 0.72. Clypeus height 0.14. Sternum length 0.54, width 0.49. Abdomen length 1.17, width 0.83, height 0.88. Leg formula I/IV/II/III; segment length (I/II/III/IV): femora 1.23/0.84/0.50/1.02; patellae+tibiae 1.23/0.94/0.67/1.19; metatarsi+tarsi 1.74/1.09/0.90/1.74; total 4.22/2.87/2.07/3.96. Carapace pale orange, with dark brown pigments medially and laterally, semicircular, cephalic area higher ( Fig. 18View FIGURES 18 – 23), chelicerae pale orange. AME, ALE and PLE with same diameter and PME smallest. Sternum darker than the carapace, with blackened edges. Legs pale yellow. Subtriangular abdomen, paler than the carapace with some dark brown pigment dorsally and two lateral-median tubercles ( Fig. 18View FIGURES 18 – 23), ventrally darker, with two longitudinal depigmented stripes. Spinnerets pale yellow. Palp with conductor longer, pointed, with numerous denticles along the edge ( Fig. 1View FIGURES 1 – 6); slender embolus, slightly curved in the apex. Embolus with large base. Tegulum circular very developed, nonsclerotized ( Fig. 1View FIGURES 1 – 6). Sperm duct in the embolus base sinuous ( Fig. 1View FIGURES 1 – 6).

Female paratype (from Foz do Iguaçu, IBSP 209879). Total length 3.69. Carapace length 1.30, width 1.14. Clypeus height 0.21. Sternum length 0.78, width 0.62. Abdomen length 2.18, width 2.18, height 1.97. Leg formula IV/I/II/III; segment length (I/II/III/IV): femora 1.91/1.40/1.02/1.95; patellae+tibiae 2.22/1.34/1.05/2.31; metatarsi+tarsi 2.94/1.95/1.61/3.12; total 7.07/4.70/3.69/7.39. Carapace orange brown, dark brown pigments medially and laterally, semicircular, cephalic area higher ( Fig. 19View FIGURES 18 – 23), chelicerae orange brown. AME and PLE bigger than the other eyes. Sternum darker, with blackened edges. Legs orange-brown, except femora, anteriorly light brown. Abdomen subtriangular with two lateral-median tubercles and some dark pigments dorsally ( Fig. 19View FIGURES 18 – 23), ventrally orange-brown, with two longitudinal depigmented stripes. Spinnerets yellow-brown. Epigynum with a slightly sclerotized plate, wider than long ( Fig. 2View FIGURES 1 – 6); with a single oval and small copulatory opening in the medianposterior margin of epigynum ( Fig. 2View FIGURES 1 – 6). Internal genital with reniform spermathecae and the short and uncoiled copulatory ducts ( Fig. 3View FIGURES 1 – 6); fertilization ducts short and coiled ( Fig. 3View FIGURES 1 – 6).

Variation. Pigmentation in ventral view of abdomen and sternum of male can range from olive green to dark yellow.

Remark. Males and females were collected together in various locations in Brazil.

Additional material examined. Brazil. Minas Gerais: Juatuba ( Serra Azul , 20°10’S; 44°21’W), 18– 24.IV.2002, Equipe Biota leg., 2F ( MCN 48704View Materials)GoogleMaps  . São Paulo: Teodoro Sampaio ( Parque Estadual do Morro do Diabo , 22°31’S; 52°18’W), 24–31.III.2003, Equipe Biota leg., 1M ( MCN 40579View Materials); 1F ( MCN 40573View Materials); 1F ( MCN 40574View Materials), all collected by beating tray.GoogleMaps 

Distribution. Brazil (Minas Gerais, São Paulo, Mato Grosso do Sul and Paraná).

IBSP

Instituto Biologico de Sao Paulo

MCN

McNeese State University