Neischnocolus parvior ( Chamberlin & Ivie, 1936 ), 2025

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 : 30-31

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-FF9D-5238-AC0A-FA894D20FD0A
treatment provided by	Plazi
scientific name	Neischnocolus parvior ( Chamberlin & Ivie, 1936 )
status	stat. rev. et comb. nov.

Treatment

Neischnocolus parvior ( Chamberlin & Ivie, 1936) View in CoL stat. rev. et comb. nov.

Eurypelma parvior Chamberlin & Ivie, 1936: 7 .

Barropelma parvior – Chamberlin 1940: 39.

Neischnocolus panamanus View in CoL – Pérez-Miles et al. 2019: 152, fig. 7.

Diagnosis

Females of N. parvior stat. rev. et comb. nov. resemble those of N. weinmanni by having spermathecal striae converging in a complete arc and absence of ventral receptacles. Nevertheless, N. parvior differs from N. weinmanni by having irregular pentagon-shaped spermathecae, I-shaped guard plate, and spermathecal striae comparatively more ordered into a horizontal orientation (rectangular spermathecae, rectangular guard plate, and spermathecal striae unordered in N. weinmanni ). Additionally, females of N. parvior stat. rev. et comb. nov. slightly resemble those of N. caxiuana by having spermathecal striae converging in a complete arc. Nonetheless, N. parvior easily differs from N. caxiuana by the absence of ventral receptacles ( Fig. 4; Pérez-Miles et al. 2019: fig. 7).

Type material

Holotype

PANAMA – Provincia de Colón • ♂; Barro Colorado Island ; Aug. 1928; A.M. Chickering leg.; AMNH.

Remarks

Pérez-Miles et al. (2019) considered N. parvior stat. rev. et comb. nov. as a junior synonym of N. panamanus due to spermathecae morphologic resemblance. However, the indicated morphological variation on N. panamanus strongly indicates the conserved presence of ventral receptacles and spermathecal striae converging into an incomplete arc ( Lapinski et al. 2018: figs 10–14; Pérez-Miles et al. 2019: fig. 5), while the holotype female of N. parvior presents striking and informative characters that support the separation of this species (i.e., loss of ventral receptacles and spermathecal striae converging in a complete arc and ordered into a horizontal orientation; Pérez-Miles et al. 2019: fig. 7). Pérez-Miles et al. (2019) indicated that the spermatheca of N. parvior was damaged by a previous worker. However, this damage is located at the dorsal surface of the spermatheca (missing; Pérez-Miles et al. 2019: cf. fig. 7), which is mainly formed by a membrane. That membrane so far does not seem to have informative characters. This would further support the previously mentioned characters for this species.