Description of a new species of Vaejovis from Michoacán, Mexico (Arachnida: Scorpiones: Vaejovidae)

Contreras-Félix, Gerardo A.; Francke, Óscar F.

doi:10.7550/rmb.37437

Cited by 3 publications

(1 citation statement)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…76, 78)), V. chisos (after, in part, Jarvis, Sissom & Henson (2004: fig. 1)), V. coalcoman (after, in part, Contreras & Francke (2014: fig. 9)), and V. sierrae (after, in part, Sissom et al (2016: fig.…”

Section: Biogeographymentioning

confidence: 99%

Untitled

2016

Euscorpius

View full text Add to dashboard Cite

Genus Graemeloweus, gen. nov. (Scorpiones: Vaejovidae) is described from northern California, USA. The genus is composed of three species formerly placed in Pseudouroctonus: Graemeloweus iviei (Gertsch et Soleglad, 1972), comb. nov. (type species), G. glimmei (Hjelle, 1972), comb. nov., and G. maidu (Savary et Bryson, 2016), comb. nov. Major diagnostic characters of Graemeloweus include a non-bifurcated primary lamellar hook, the presence of a secondary lamellar hook, a complex mating plug with a two part base and an asymmetric crescent-shape barb, and the presence of a well-developed ventromedian (V2) carina on the pedipalp chela. Evidence is presented suggesting that Graemeloweus is more closely related to Kovarikia than Pseudouroctonus. phology, and other taxonomically relevant structures. Comparisons are made between genera Graemeloweus and Kovarikia, suggesting that they are taxonomic sister genera. A key to the three species, discussion on biogeographical considerations, and a map showing their known distribution is provided. Three Appendices provide additional information and illustrations of Graemeloweus hemispermatophores, hemispermatophores of other relevant genera, and complete trichobothrial patterns for the three species of Graemeloweus.

show abstract

Section: Biogeographymentioning

confidence: 99%

Untitled

2016

Euscorpius

View full text Add to dashboard Cite

show abstract

Two new species of Vaejovis (Scorpiones: Vaejovidae) belonging to the mexicanus group from Aguascalientes, Mexico, with comments on the homology and function of the hemispermatophore

Chávez-Samayoa

Díaz-Plascencia

González‐Santillán

2022

Zoologischer Anzeiger

View full text Add to dashboard Cite

The male sexual apparatus in the order Scorpiones (Arachnida): a comparative study of functional morphology as a tool to define hypotheses of homology

et al. 2017

View full text Add to dashboard Cite

BackgroundInsemination in scorpions is carried out by means of a partly sclerotized structure, the spermatophore, which is composed of two separate halves, the hemispermatophores. In most genera these reproductive structures can be used to differentiate species. However, many taxa such as the genus Euscorpius and the family Diplocentridae lack the morphological diversity observed in the copulatory organs of many other arthropods, rendering them useless for species level taxonomy. Such structural stasis, however, suggests that hemispermatophores have evolved relatively slowly and may thus provide a stronger phylogenetic signal for recognizing supra-generic ranks than previously thought. Based on the postulate that the phenotypic stability observed in some groups is the consequence of functional constraint, the most comprehensive comparative study of the male sexual apparatus to date was conducted for a complete reassessment of the morphology, phylogenetic value and hypotheses of homology of these structures.ResultsHemispermatophores, pre- and post-insemination spermatophores, as well as the inherent mechanisms of insemination, were studied across the whole order, allowing the recognition and description of a series of five basic bauplans for the capsular region. For the most part, these patterns appear to be consistent within each major taxonomic group, but several cases of incongruence between spermatophore morphology and taxonomy raises questions about the monophyly of some clades. The Bothriuridae are traditionally regarded as a basal scorpionoid family. However, except for the genus Lisposoma, bothriurid hemispermatophores and spermatophores are morphologically more similar to those of the Chactoidea than to those of scorpionoids. On the other hand, the male copulatory structures of the hormurid clade (Hormiops (Hormurus + Liocheles)) are more akin to those of Diplocentridae and Heteroscorpionidae than to those of other hormurids.ConclusionsSpermatophore capsular patterns appears to be congruent with a recent phylogeny of the order Scorpiones based on phylogenomic data that placed Bothriuridae outside of Scorpionoidea and Liocheles outside of Hormuridae, in contradicton with earlier phylogenetic reconstructions based on morphology. This raises questions about the potential use of functionally constrained traits to assess the reliability of contradicting phylogenetic hypotheses and emphasizes the need for a thorough reassessment of the scorpion phylogenetic relationships.Electronic supplementary materialThe online version of this article (10.1186/s12983-017-0231-z) contains supplementary material, which is available to authorized users.

show abstract

Description of a new species of Vaejovis from Michoacán, Mexico (Arachnida: Scorpiones: Vaejovidae)

Cited by 3 publications

References 10 publications

Untitled

Untitled

Two new species of Vaejovis (Scorpiones: Vaejovidae) belonging to the mexicanus group from Aguascalientes, Mexico, with comments on the homology and function of the hemispermatophore

The male sexual apparatus in the order Scorpiones (Arachnida): a comparative study of functional morphology as a tool to define hypotheses of homology

Contact Info

Product

Resources

About