Celaetycheus Simon 1897
Creators: name: Polotow, Daniele
name: Brescovit, Antonio D.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Ctenidae
Celaetycheus

description: Celaetycheus Simon, 1897
Figures 1 C–D, 10–14, 16
Celaetycheus Simon 1897: 114, 115 (type species by monotypy: Celaetycheus flavostriatus Simon, 1897). Lehtinen 1967: 378; Silva 2003.
Diagnosis. Males of Celaetycheus resemble those of Centroctenus Mello-Leitão, 1929 by the elongated tibiae and short cymbium (see Brescovit, 1996: figs 19–20), but can be distinguished by the presence of several small ventral spines on the endites, coxae, femora and trochanter (Figs 12 C, 13A–C) and the presence of a cymbial retroventral process (Figs 11 A–B) in the male palp. Females of Celaetycheus resemble those of Centroctenus by the smooth median plate (see Brescovit, 1996: figs 21–22), but can be distinguished by the short lateral spurs, with the tip below the median plate, and the spermathecae divided in two parts, with a round head and large and curved base in the epigyne (Figs 11 C–D).
Description. Small to medium sized ecribellate spiders. Total body length (males and females): 3.50–4.50 mm. Carapace piriform (Figs 1 C–D). Thoracic groove longitudinal, in the posterior third of the carapace (Figs 1 C–D). Carapace brown with radial black lines from fovea to the border of the carapace; border of carapace with white setae (Figs 1 C–D). Chilum divided. Clypeus with long erect black bristles. Eyes on black tubercles, with ctenoid pattern 2-4-2 (Figs 1 C–D). Eyes round, except oval anterior lateral eyes. Chelicerae brown with longitudinal black lines, projecting anteriorly in females; promargin with tree teeth, the median almost twice as high as the laterals (Fig. 10 A); retromargin with five similar sized teeth (Fig. 10 A); prominent basal condyle. Endites with external lateral margin excavated, distally rounded bearing dense apical scopulae (Fig. 13 C); subapical serrula. Labium distally rounded bearing dense apical scopula (Fig. 13 C). Sternum oval, not extending between legs IV (Fig. 13 C). Male legs more elongated and slender than those of female. Claw of the female pedipalp with four short teeth (Fig. 10 B). Trochanter deeply notched. Trichobothrial base with 2 transversal grooves (Fig. 10 C). Tarsal organ rounded and smooth, with oval aperture (Fig. 10 D). Abdomen oval, with numerous black setae in the anterior dorsal area. Sternum, endites, labium, legs and ventral abdomen light brown. Palp: femur elongated and sinuous; endites, coxae, femora and trochanter with several small ventral spines (Figs 12 C, 13A–C); tibiae elongated; short RTA and large ventral apophysis; round cymbium with retroventral process; laminar embolus with thin tip (Fig. 11 A); elongated and hook-shaped median apophysis (Figs 11 A–B); conductor with a groove to accommodate the tip of embolus (Fig. 11 A); retrolateral tegulum-subtegulum locking lobes (Fig. 12 A); subtegulum with three anelli (Fig. 12 A). Epigyne: elongated and smooth median field projected posteriorly; lateral field with short lateral projection (Fig. 11 C). Internally with short copulatory ducts; spermathecae divided in two parts, an anterior round head and a posterior large base; elongated and laminar fertilization ducts (Fig. 11 D). Spinnerets: anterior lateral spinneret has a pair of major ampullate gland spigots, a tartipore and about ten piriform gland spigots with elongated shafts (Fig. 14 A); posterior median spinneret has at least one minor ampullate gland spigots two cylindrical gland spigots and three aciniform gland spigot (Fig. 14 B); posterior median spinneret has approximately eight aciniform gland spigots with elongated shafts (Fig. 14 C).
Composition. One species: Celaetycheus flavostriatus.
Distribution. Atlantic forest, southern State of Bahia, Brazil (Fig. 16 A–B).
Misplaced species.
Ctenus ottleyi (Petrunkevitch, 1930). Petrunkevitch 1930: 7, figs 1–3 (female holotype from Yunque, Puerto Rico, deposited in YPM 502046, examined); = Celaetycheus strenuus Bryant 1942: 8, pl. 2, fig. 12 (female holotype from Maricao, Puerto Rico, 2–3.VI.1938, P. Darlington, deposited in MCZ 23172, examined), new synonymy.
Leptoctenus paradoxus (F.O. Pickard-Cambridge, 1900). F.O. Pickard-Cambridge 1900: 115, pl. 8, fig. 13 (male holotype from Bugaba, Chiriqui, Panama, 3.III.1901, deposited in BMNH 1901.3.3.155, examined), new combination.
Ctenus delesserti (Caporiacco, 1947). Caporiacco 1947: 28 (female holotype and an immature paratype from Webecari Mission, Essequibo Islands, West Demerara Region, Guyana, 3.IV.1936, and an immature paratype from Waratilla Creek, Essequibo Islands, West Demerara Region, Guyana, 29.V.1936, examined), new combination.
Celaetycheus modestus Bryant 1942: 7, pl. 2, fig. 19 (male holotype from El Yunque, Puerto Rico, 24–28.II.1941, C.T. Parsons, deposited in MCZ 22126, examined), incertae sedis.
Remarks. The type specimen of Celaetycheus paradoxus was examined and considered congeneric to the remaining Mexican species currently assigned to Leptoctenus such as L. byrrhus Simon, 1888, L. gertschi Peck, 1981 and L. sonoraensis Peck, 1981 (Peck 1981: figs 24–29) by the morphology of the male palp and the presence of three teeth on retromargin of the chelicerae (Peck 1981: 165) rather than five teeth as occurs in Celaetycheus. The holotype of Leptoctenus, L. agalenoides L. Koch, 1878, is from Australia and a critical review of the genus is required to evaluate the taxonomic status of the Mexican species of Leptoctenus in detail.
The type specimen of Celaetycheus delesserti was examined and is here considered a member of Ctenus species based on the presence of two projections on the median plate of the epigyne (Brescovit & Simó, 2007: 2, figs 1–45).
The type specimen of Celaetycheus modestus was examined and considered incertae sedis in the Ctenidae. The species can not be diagnosed as member of any genus currently described in the Ctenidae.
description: Published as part of Polotow, Daniele & Brescovit, Antonio D., 2009, Revision of the new wandering spider genus Ohvida and taxonomic remarks on Celaetycheus Simon, 1897 (Araneae: Ctenidae), pp. 1-20 in Zootaxa 2115 on pages 13-17, DOI: 10.5281/zenodo.187963