Abstract
The larvae and exuviae of Thecagaster charpentieri (Kolenati, 1846) are described and depicted. Larval stages collected in Georgia was the basis for the additional description of an early larval stage of this species. A leg of the larvae was used for molecular genetic verification. Further exuviae of T. charpentieri were collected in Azerbaijan. Morphological comparisons were conducted between the exuviae of T. charpentieri and those of the larvae and exuviae described so far of the “bidentata group” now assembled together in the restored genus Thecagaster Selys, 1854. The exuviae of T. coronata (Morton, 1916) was re-described taking into account an earlier description by Seidenbusch et al. (2015). In addition, the exuvia of the closely related T. brevistigma (Selys, 1854) is described and compared to T. coronata.
References
- Bartenev, A.N. (1929) Neue Arten und Varietäten der Odonaten des West-Kaukasus. Zoologischer Anzeiger, 85 (1/2), 54–68.
- Bartenev, A.N. (1930) Die paläarktischen Arten der Untergattung Cordulegaster Leach. Travaux de la Station Biologique du Caucase du Nord, Gorsky Institut Agronomique, Vladicaucase, Russia, 3, 1–32. [in Russian]
- Boudot, J.-P., Borisov, S., De Knijf, G., van Grunsven, R.H.A., Schröter, A. & Kalkman, V.J. (2021) Atlas of the dragonflies and damselflies of West and Central Asia. Brachytron, 22 (Supplement), 3–248.
- Dijkstra, K.-D.B. & Schröter, A. (2020) Field Guide to the Dragonflies of Britain and Europe. Bloomsbury Publishing, London, 336 pp.
- Dumont, H.J. (1991) Fauna Palaestina. Insecta V—Odonata of the Levant. The Israel Academy Sciences and Humanities, Jerusalem, 297 pp.
- Jiang, Y-H. & Wang, T. (2007) Description of the larva of Cordulegaster pekinensis Selys from China (Anisoptera: Cordulegastridae). Odonatologica, 36 (2), 197–200.
- Kolenati, F.A. (1846) Insecta Caucasi. Meletemata Entomologica, Imperialis Academiae Scientiarum, Moscow, Russia, 5, 114–115. https://doi.org/10.5962/bhl.title.51370
- Leach, W.E. (1815) Entomology. In: Brewster, D. (Ed.), The Edinburgh Encyclopaedia Vol. IX. William Blackwood, Edinburgh, pp. 57–172.
- Lohmann, H. (1993) Revision der Cordulegastridae. 2. Beschreibung neuer Arten in den Gattungen Cordulegaster, Anotogaster, Neallogaster und Sonjagaster (Anisoptera). Odonatologica, 22 (3), 273–294.
- Morton, K.J. (1916) X. Some Palaearctic species of Cordulegaster. Transactions of the Entomological Society of London, 63, 273–290. https://doi.org/10.1111/j.1365-2311.1916.tb02535.x
- Schneider, T. & Ikemeyer, D. (2016) Records of Odonata species from Khorãsãn-e-Razavi and Khorãzãn-e-Shomãli in Northeast-Iran. Entomologische Zeitschrift, 126 (4), 211–216.
- Schneider, T., Vierstraete, A., Müller, O., van Pelt, G.J., Caspers, M., Ikemeyer, D., Snegovaya, N. & Dumont, H.J. (2021) Taxonomic Revision of eastern part of Western Palaearctic Cordulegaster using molecular phylogeny and morphology, with the description of two new species (Odonata: Anisoptera: Cordulegastridae). Diversity, 13 (12), 667. https://doi.org/10.3390/d13120667
- Schneider, T., Ikemeyer, D., Müller, O. & van Pelt, G.J. (2022) Notes on Cordulegaster kalkmani in East Turkey (Odonata: Cordulegastridae). Odonatologica, 51 (3/4), 289–300. https://doi.org/10.60024/odon.v51i3-4.a5
- Schneider, T., Vierstraete, A., Kosterin, O.E., Ikemeyer, D., Hu, F.-S., Novelo-Gutierrez, R., Kompier, T., Everett, Jr., L., Müller, O. & Dumont, H.J. (2024) Molecular phylogeny of the family Cordulegastridae (Odonata) worldwide. Insects, 15, 622. https://doi.org/10.3390/insects15080622
- Schneider, W. (1986) Systematik und Zoogeographie der Odonata der Levante unter besonderer Berücksichtigung der Zygoptera. Doctoral Thesis, University Mainz, Mainz, 531 pp.
- Schneider, W.G. (1845) Verzeichniss der von Herrn Prof. Dr. Lowe im Sommer 1842 in der Türkei und Kleinasien gesammelten Neuroptera, nebst kurzer Beschreibung der neuen Arten. Stettiner Entomologische Zeitung, 6, 110–116.
- Seidenbusch, R., Ikemeyer, D. & Schneider, T. (2015) Description of the last instar exuviae of Cordulegaster vanbrinkae from Iran and comparison with the last instar exuviae of Cordulegaster insignis nobilis (Odonata: Cordulegastridae). Sulzbach-Rosenberger Libellenrundbriefe, 18, 1–25. [privately published]
- Selys-Longchamps, E. de (1843) Nouvelles additions aux Libellulidees de la Belgique de 1840, Bulletin de l’Académie royale des Sciences de Belgique, 10, 149–162.
- Selys-Longchamps, E. de (1854) Synopsis des Gomphines. Bulletin de l’Académie royale des Sciences de Belgique, 21, 23–114.
- Selys-Longchamps, E. de (1886) Odonates Nouveaux de Pékin. Annales de la Société Entomologique de Belgique, 1886, clxxvii–clxxxvi.
- Skvortsov, V.E. & Snegovaya, N.Y. (2015) Two new species of Cordulegaster Leach, 1815 from Azerbaijan (Odonata, Cordulegastridae). International Dragonfly Fund Report, 85, 1–22.
- Verschuren, D., Dumont, H.J. & Demirsoy, A. (1987) Description of the larva of Cordulegaster mzymtae Bartenef, 1929, with a discussion of its taxonomic position (Anisoptera: Cordulegastridae). Odonatologica, 16 (4), 401–406.
- Verschuren, D. (1989) Revision of the larvae of Western-Palaearctic Cordulegaster Leach, 1815 (Odonata, Cordulegastridae) with a key to the considered taxa and a discussion on their affinity. Bulletin et Annales de la Société Royale Belge d’Entomologie, 125, 5–35.
- Verschuren, D. (1991) Phylogenetic significance of antennal growth patterns at two levels of dragonfly taxonomy: the example of Cordulegaster (Anisoptera: Cordulegastridae). Odonatologica, 20 (3), 321–331.