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Gesomyrmex flavescens
| †Gesomyrmex flavescens Temporal range: Lutetian, Middle Eocene Eckfeld, Germany | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Formicinae |
| Tribe: | Gesomyrmecini |
| Genus: | Gesomyrmex |
| Species: | †G. flavescens |
| Binomial name | |
| †Gesomyrmex flavescens Dlussky, Wappler & Wedmann, 2009
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No formal diagnosis or comparative comments were provided when this species was described, only a key for determination. According to Dlussky et al. (2009), the diagnostic character for this taxon is said to be a straight anterior clypeal margin, but this trait is ambiguous in the fossil specimen. Aria et al. (2023) consider this species as species inquirenda.
Identification
Gesomyrmex breviceps, Gesomyrmex flavescens and Gesomyrmex pulcher have relatively disparate morphometrics and are not easily distinguished, complicated by the lack of original diagnoses (Aria et al., 2023).
Cephalic morphometrics of gynes for relevant fossil Gesomyrmex species. (a) Head length (HL). (b) Normalized head shape (head length/head width, HRN, squares) and normalized relative eye diameter (eye diameter/head length, HERN, diamonds). Abbreviations: flav., flavescens; germ., germanicus; hoern., hoernesi. (Aria et al., 2023, Fig. 4)
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Distribution
This taxon was described from Eckfeld, Germany (Lutetian, Middle Eocene).
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- †flavescens. †Gesomyrmex flavescens Dlussky, Wappler & Wedmann, 2009: 11, figs. 3B, 6J (q.) GERMANY.
Description
References
- Aria, C., Jouault, C., Perrichot, V., Nel, A. 2023. The megathermal ant genus Gesomyrmex (Formicidae: Formicinae), palaeoindicator of wide latitudinal biome homogeneity during the PETM. Geological Magazine, 1–11 (doi:10.1017/s0016756822001248).
- Dlussky, G.M., Wappler, T., Wedmann, S. 2009. Fossil ants of the genus Gesomyrmex Mayr (Hymenoptera, Formicidae) from the Eocene of Europe and remarks on the evolution of arboreal ant communities. Zootaxa 2031: 1-20 (doi:10.11646/zootaxa.2031.1.1).