Published September 24, 2025 | Version v1
Taxonomic treatment Open

Poeciloxestia Lane 1965

  • 1. Attaché Honoraire au Département de Systématique, Evolution, Biodiversité [ISYEB-UMR 7205], Muséum National d'Histoire Naturelle, 45 bis, rue Buffon, F- 75005 Paris.
  • 2. Museu de Zoologia, Universidade de São Paulo, São Paulo, SP, Brazil.
  • 3. Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales - Cra 30 45 - 02, Ciudad Universitaria, Bogotá, 111321 - Colombia.
  • 4. Laboratório de Invertebrados - LABIN, Instituto de Ciências Exatas e Naturais - ICEN, Universidade Federal de Rondonópolis, Rondonópolis, Mato Grosso, Brazil

Description

Poeciloxestia Lane, 1965

Poeciloxestia Lane, 1965: 269.

Poeciloxestia (Regularilinea) Özdikmen, 2025l: 3351. Syn. nov.

Remarks. Özdikmen(2025l) divided Poeciloxestia into two subgenera and reported:“In the first group [Poeciloxestia (Poeciloxestia) Lane, 1965: 269], longitudinal dark band on suture of elytra distinctly irregularly bordered, the band clearly expanded both in basal and apical parts, and narrowed in the middle part, or clearly expanded only in basal or apical parts;” and “In the second group, longitudinal dark band on suture of elytra more or less regularly bordered.”

It’s really very difficult to say what we truly think about this subgenus; however it is completely absurd and without any scientific basis. Without any doubt, the shape of the dark area on the elytra is nothing more than a specific feature and could never be used as a generic feature.

Fragoso (1978) made a serious and detailed study of Poeciloxestia and observed nothing that would allow it to be separated into subgenera. Furthermore, according to Fragoso (1978), “The dark dorso-elytral vitta, which shows considerable intraspecific variation, defies definition, and it is extremely difficult to ascertain which pattern is ancestral.” He also presented a hypothetical phylogenetic tree based on elytral length, prosternal shape, and pronotal sculpturing, not attributing any special value to the elytral dark macula. Therefore, we are synonymizing Poeciloxestia (Regularilinea) with Poeciloxestia.

Notes

Published as part of Tavakilian, Gérard L., Santos-Silva, Antonio, Botero, Juan Pablo & Nascimento, Francisco Eriberto De Lima, 2025, Re-classification of some American Cerambycidae (Insecta, Coleoptera): a critical review of bad taxonomic practices, pp. 233-246 in Zootaxa 5696 (2) on page 235, DOI: 10.11646/zootaxa.5696.2.3, http://zenodo.org/record/17324846

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Additional details

Biodiversity

References

  • Ozdikmen, H. (2025 l) A taxonomic evaluation on the genus Poeciloxestia Lane (Cerambycidae: Cerambycinae). Munis Entomology & Zoology, 20 (2), 3346-3351.
  • Fragoso, S. A. (1978) Revision of the neotropical genus Poeciloxestia Lane, 1965 (Coleoptera, Cerambycidae). The Coleopterists Bulletin, 32 (2), 113-158. https://doi.org/10.5962/p.371749