Neischnocolus caxiuana ( Pérez-Miles, Miglio & Bonaldo, 2008 )

Peñaherrera-R, Pedro, Guerrero-Campoverde, Ariel, León-E, Roberto J., Gabriel, Ray, Sherwood, Danniella & Cisneros-Heredia, Diego F., 2025, Revisiting the tarantula genus Neischnocolus Petrunkevitch, 1925 (Araneae, Theraphosidae): new insights on male palpal bulb morphology and description of three new species, European Journal of Taxonomy 1022, pp. 19-50 : 27-29

publication ID

https://doi.org/10.5852/ejt.2025.1022.3079

publication LSID

lsid:zoobank.org:pub:BA169159-91E4-4DF7-A5A3-B6DE29ED14B3

persistent identifier

https://treatment.plazi.org/id/F70CAE07-FF9E-523E-ACFB-FCC44F1EFB30

treatment provided by

Plazi

scientific name

Neischnocolus caxiuana ( Pérez-Miles, Miglio & Bonaldo, 2008 )
status

 

Neischnocolus caxiuana ( Pérez-Miles, Miglio & Bonaldo, 2008) View in CoL

Figs 2, 4–5

Ami caxiuana Pérez-Miles, Miglio & Bonaldo View in CoL in Pérez-Miles et al., 2008: 57 View Cited Treatment , figs 4–10.

Neischnocolus caxiuana View in CoL – Pérez-Miles et al. 2019: 154

Amended diagnosis

Males of N. caxiuana slightly resemble those males of N. armihuarensis and N. cisnerosi by having an embolus straight perpendicular (dorsal curvature) to palpal organ axis and presence of a median dorsal granular area. Nevertheless, they differ by having an median dorsal granular area composed of spiky spicules extending over dorso-retrolateral surfaces of bulb, PS and PI keels developed and comparatively longer, distal portion of embolus dilated, and prolateral accessory inferior keel absent (median dorsal granular area composed of spiky spicules extending over prolatero-dorsal and retrolateral surfaces of bulb, PS and PI keels weakly developed and comparatively shorter, distal portion of embolus not dilated, and prolateral accessory inferior keel absent in N. armihuarensis ; median dorsal granular area composed of rounded spicules extending only over dorsal surface of bulb, PS and PI keels well-developed and comparatively longer, distal portion of embolus dilated, and prolateral accessory inferior keel extremely weakly developed in N. cisnerosi ). Additionally, N. caxiuana can easily be differentiated from N. armihuarensis by the presence of two developed retrolateral palpal tibial apophyses, while the latter only presents one developed retrolateral palpal tibial apophysis. Females of N. caxiuana differ from those of other known species by having semi-circular spermathecae, spermathecal striae converging in a complete arc, extremely elongated ventral receptacles extending over the length of the spermathecae, weakly developed guard plates.

Type material

Holotype

BRAZIL – Estado do Pará • ♂; FLONA, Estação Científica Ferreira Penna ; A.P. Barreiros and L. T. Miglio leg.; MPEG ( ARA), MPEG ( ARA)000994.

Paratype

BRAZIL • 1 ♀; same data as for holotype; 26 May 2003; J.A.P. Barreiros and C.O. Araújo leg.; MPEG ( ARA), MPEG ( ARA)000989 .

Neischnocolus cisnerosi Peñaherrera-R., Guerrero-Campoverde, León-E., Pinos-Sánchez & Falcón-Reibán, 2023

Fig. 1B

Neischnocolus cisnerosi Peñaherrera-R., Guerrero-Campoverde, León-E., Pinos-Sánchez & Falcón-Reibán, 2023: 487, figs 2c–d, 3b, 4c–d, 5a–d, 6.

Amended diagnosis

Males of Neischnocolus cisnerosi resemble those of N. armihuarensis and N. caxiuana by having an embolus straight perpendicular (dorsal curvature) to palpal organ axis and presence of a median dorsal granular area. Nevertheless, males of N. cisnerosi differ from those of N. armihuarensis by having two developed retrolateral palpal tibial apophyses, median dorsal granular area composed of rounded spicules extending only over dorsal surface of bulb, PS and PI keels developed and comparatively longer, distal portion of embolus dilated, and a prolateral accessory inferior keel extremely weakly developed (one developed retrolateral palpal tibial apophysis, median dorsal granular area composed of spiky spicules extending over prolatero-dorsal and retrolateral surfaces of bulb, PS and PI keels weakly developed and comparatively shorter, distal portion of embolus not dilated, and prolateral accessory inferior keel absent in N. armihuarensis ; Kaderka 2014: figs 4–5, 7–10); from N. caxiuana by having median dorsal granular area composed of rounded spicules extending only over dorsal surface of bulb, PS and PI keels well developed and comparatively longer, distal portion of embolus dilated, and prolateral accessory inferior keel extremely weakly developed (median dorsal granular area composed of spiky spicules extending over dorso-retrolateral surfaces of bulb, PS and PI keels developed and comparatively longer, distal portion of embolus dilated, and prolateral accessory inferior keel absent in N. caxiuana ; Fig. 4).

Type material

Holotype

REPUBLIC OF ECUADOR – Provincia de Santo Domingo de Los Tsáchilas • ♂; Parroquia de Santo Domingo, Reserva Otongachi —Fundación Otonga; 0.32000° S, 78.95000° W; elev. 947 m; 6 Oct. 2017; F. Velasques leg.; wet forest; ZSFQ-i, ZSFQ-i11100. GoogleMaps

T

Tavera, Department of Geology and Geophysics

MPEG

Museu Paraense Emilio Goeldi

PI

Paleontological Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Theraphosidae

Genus

Neischnocolus

Loc

Neischnocolus caxiuana ( Pérez-Miles, Miglio & Bonaldo, 2008 )

Peñaherrera-R, Pedro, Guerrero-Campoverde, Ariel, León-E, Roberto J., Gabriel, Ray, Sherwood, Danniella & Cisneros-Heredia, Diego F. 2025
2025
Loc

Neischnocolus caxiuana

Perez-Miles F. & Gabriel R. & Sherwood D. 2019: 154
2019
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