Chrosiothes venturosus Marques & Buckup, 1997

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: 228

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-FFBB-D222-FF1B-FE96B04623D0

treatment provided by

Plazi

scientific name

Chrosiothes venturosus Marques & Buckup, 1997
status

 

Chrosiothes venturosus Marques & Buckup, 1997 

Figs. 16, 17View FIGURES 16, 17, 28View FIGURES 24 – 28, 31

Chrosiothes venturosus Marques & Buckup, 1997: 184  , figs. 6, 7 ( Male holotype from Reserva Florestal Adolpho Ducke, Manaus, Amazonas, Brazil, 20.VIII.1991, H. Höfer leg., deposited in INPA, examined). 

Diagnosis. The female is similar to those of C. murici  new species by the larger spermathecae close to each other, and by the fertilization ducts closer from the posterior margin of epigynum ( Fig. 17View FIGURES 16, 17), but differ by the spermathecae anteriorly coiled, and copulatory ducts opening posteriorly ( Fig. 17View FIGURES 16, 17) while in C. murici  new species the copulatory ducts open medianly ( Fig. 12View FIGURES 7 – 12), and by having the copulatory openings closer from the posterior margin of epigynum ( Fig. 16View FIGURES 16, 17). Spermathecae, by transparency, cordiform in ventral view ( Fig. 16View FIGURES 16, 17).

Description. Female (from São Gabriel da Cachoeira, MCN 46045View Materials). Total length 4.94. Carapace length 1.66, width 1.50. Clypeus height 0.31. Sternum length 1.04, width 0.78. Abdomen length 3.22, width 3.64, height 2.86. Leg formula IV/I/II/III; segment length (I/II/III/IV): femora 2.54/1.82/1.50/2.70; patellae+tibiae 2.60/1.71/1.30/ 2.60; metatarsi+tarsi 3.74/2.39/1.92/3.90; total 8.88/5.92/4.72/9.20. Carapace dark red-brown, eye region black ( Fig. 28View FIGURES 24 – 28). Chelicerae, sternum and coxae olive-brown. Leg I dark red-brown, legs II –IV half of femora yellow, other articles dark red-brown. PLE and PME with same diameter and smaller than other eyes; AME bigger than the other eyes. Abdomen wider than long, with two lateral-median tubercles, anterior median dorsum with transverse dark bands, posterior median with white spots ( Fig. 28View FIGURES 24 – 28). Ventrally dark brown, with depigmented spots. Spinnerets olive-brown. Epigynum with a slightly sclerotized plate, wider than long ( Fig. 16View FIGURES 16, 17); spermathecae, by transparency, cordiform in ventral view ( Fig. 16View FIGURES 16, 17) and copulatory openings closer from the posterior margin of epigynum ( Fig. 16View FIGURES 16, 17). Internal genital with larger spermathecae, anteriorly coiled ( Fig. 17View FIGURES 16, 17) and fertilization ducts shorts, uncoiled ( Fig. 17View FIGURES 16, 17).

Male. See Marques & Buckup (1997).

Remarks. Males and females were collected at the same locality.

Material examined. Brazil. Amazonas: São Gabriel da Cachoeira, Parque Nacional do Pico da Neblina , Cachoeira do Tucano (00°48’07”N; 66°00’40”W) 100m, A. Nogueira leg., 22.IX.2007, 1F, night manual collection ( MCN 46045View Materials)GoogleMaps  ; D. Candiani leg., 22.IX.2007, 1F (MCN 46046); D. Candiani leg., 23.IX.2007, 1M, night manual collection (MCN 46047).

Distribution. Brazil (Amazonas).

INPA

Instituto Nacional de Pesquisas da Amazonia

MCN

McNeese State University

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Theridiidae

Genus

Chrosiothes

Loc

Chrosiothes venturosus Marques & Buckup, 1997

Rodrigues, Everton Nei Lopes 2017
2017
Loc

Chrosiothes venturosus

Marques 1997: 184