Abstract
The final instar larva of the genus Dysphaea Selys, 1853 is described and figured for the first time based on specimens of D. gloriosa Fraser, 1938 from Khao Yai National Park, Thailand. The larvae of D. gloriosa are very rarely encountered. The larvae are characterized by the relatively larger head, the swollen heavily spined genae extending well beyond the eyes, the swollen postocular lobes bearing a disordered row of dense strong marginal spines, the outer armature of the mandibles and the unusual labrum. Notes on the habitat and biology of the larvae are also provided.
References
- Asahina, S. (1978) A remarkable new damselfly allied to Bayadera (Odonata, Euphaeidae). Proceedings of the Japanese Society of Systematic Zoology, 14, 43–46.
- Asahina, S. (1985) A list of the Odonata recorded from Thailand. Part XI. Euphaeidae. Cho Cho, 8 (12), 18– 38.
- Bybee, S.M., Kalkman, V.J., Erickson, R.J. Breinholt, J.W., Suvorov, A., Dijkstra, K-D.B., Cordero-Riviera, A., Skevington, J.H., Abbott, J.C., Sanchez Herrera, M., Lemmon, A.R., Moriaty Lemmon, E. & Ware, J.L. (2021) Phylogeny and classification of Odonata using targeted genomics. Molecular Phylogenetics and Evolution, 160, 1–15. https://doi.org/10.1016/j.ympev.2021.107115
- Charpentier, T. (1840) Libellulinae Europaeae descriptae ac depictae. Leopold Voss, Lipsiae, 2 + 180 pp.
- Fraser, F.C. (1938) Two new species of Oriental Odonata. Proceedings of the Royal Entomological Society, London, 7 (B), 197–198. https://doi.org/10.1111/j.1365-3113.1938.tb01228.x
- Hämäläinen, M. (2003) Cryptophaea, a new euphaeid genus and three new species of Caloptera damselflies from Thailand (Odonata: Euphaeidae, Calopterygidae). Zoologische Mededelingen, 77, 15–36 + 441–454.
- Hämäläinen, M. (2017) The Caloptera damselflies of Thailand - Distribution maps by provinces (Odonata: Calopterygoidea). Faunistic studies in South-East Asian and Pacific Island Odonata, 19, 1–28.
- Hämäläinen, M., Dow, R.A. & Stokvis, F.R. (2015) Revision of the Sundaland species of the genus Dysphaea Selys, 1853 using molecular and morphological methods, with notes on allied species (Odonata: Euphaeidae). Zootaxa, 3949 (4), 451–490. https://doi.org/10.11646/zootaxa.3949.4.1
- Keetapithchayakul, T.S., Makbun, N., Rattanachan, K. & Tungpairojwong, N. (2023) Contribution to the knowledge of the Odonata fauna of Khao Yai National Park and the adjacent regions in Thailand. Faunistic Studies in South-east Asian and Pacific Island Odonata, 42, 1–46.
- Lieftinck, M.A. (1950) Further studies on southeast Asiatic species of Macromia Rambur, with notes on their ecology, habits and life history, and with description of larvae and two new species (Odon., Epophthalmiinae). Treubia, 20, 657–716.
- Lieftinck, M.A. (1959) Waterjuffers voor de lens. Levende Natuur, 62 (5/6), 98–106.
- Ng, C.Y. (2024) Freshwater Macroinvertebrates in Hong Kong: Odonata: Euphaea decorata. Available from: https://www.biosch.hku.hk/ecology/staffhp/dd/macroinvertebrates/Odonata/Euphaeidae/Euphaeadecorata.html (accessed 20 March 2024)
- Orr, A.G. (2001) An annotated checklist of the Odonata of Brunei with ecological notes and descriptions of hitherto unknown males and larvae. International Journal of Odonatology, 4, 167–220. https://doi.org/10.1080/13887890.2001.9748168
- Selys-Longchamps, E. (1840) Monographie des libellulidées d’Europe. Roret, Paris, 220 pp.
- Selys-Longchamps, E. (1853) Synopsis des caloptérygines. Bulletins de l’Académie Royale des Sciences, des Lettres et des Beaux-arts de Belgique Annex (1853–1854), 1853, 1–73.
- Watson, M.C. (1956) The Utilization of Mandibular armature in Taxonomic Studies of Anisopterous nymph. Transactions of the American Entomological Society, 81, 155–202.
- Yang, G.-H. & Orr, A.G. (2024) The final stadium larvae of Bayadera strigata Davies et Yang, 1996 from Yunnan, China (Odonata: Zygoptera: Euphaeidae). International Journal of Odonatology, 27, 11–18. https://doi.org/10.48156/1388.2024.1917250