Marques & Buckup, 1997 : 184
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)
Rodrigues, Everton Nei Lopes
Zootaxa
2017
2017-10-05
4329
3
219
236
5YHXX
Marques & Buckup, 1997
Marques & Buckup
1997
[151,764,354,380]
Arachnida
Theridiidae
Chrosiothes
Animalia
Araneae
9
228
Arthropoda
species
venturosus
Chrosiothes venturosus Marques & Buckup, 1997: 184, figs. 6, 7 ( Male holotypefrom Reserva Florestal Adolpho Ducke, Manaus, Amazonas, Brazil, 20.VIII.1991, H. Höferleg., deposited in INPA, examined).
Diagnosis.The female is similar to those of C. murici new speciesby the larger spermathecae close to each other, and by the fertilization ducts closer from the posterior margin of epigynum ( Fig. 17), but differ by the spermathecae anteriorly coiled, and copulatory ducts opening posteriorly ( Fig. 17) while in C. murici new speciesthe copulatory ducts open medianly ( Fig. 12), and by having the copulatory openings closer from the posterior margin of epigynum ( Fig. 16). Spermathecae, by transparency, cordiform in ventral view ( Fig. 16).
Description. Female(from São Gabriel da Cachoeira, MCN 46045). 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. 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. 28). Ventrally dark brown, with depigmented spots. Spinnerets olive-brown. Epigynum with a slightly sclerotized plate, wider than long ( Fig. 16); spermathecae, by transparency, cordiform in ventral view ( Fig. 16) and copulatory openings closer from the posterior margin of epigynum ( Fig. 16). Internal genital with larger spermathecae, anteriorly coiled ( Fig. 17) and fertilization ducts shorts, uncoiled ( Fig. 17). Male. See Marques & Buckup (1997).
Remarks.Males and females were collected at the same locality.
Materialexamined. 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. Nogueiraleg., 22.IX.2007, 1F, night manual collection ( MCN46045); D. Candiani leg., 22.IX.2007, 1F (MCN 46046); D. Candiani leg., 23.IX.2007, 1M, night manual collection (MCN 46047).
Distribution. Brazil( Amazonas).
1661822661
1991-08-20
INPA
H. Hofer
Brazil
Manaus
Male
Reserva Florestal Adolpho Ducke
9
228
1
Amazonas
holotype
1661822664
2007-09-22
MCN
A. Nogueira
Brazil
Material
100
0.80194443
Parque Nacional do Pico da Neblina
21
-66.01111
Sao Gabriel da Cachoeira
9
228
1
Amazonas