Distribution extension of Oriental mayfly Clypeocaenis oligosetosa Soldán, 1983 (Ephemeroptera: Caenidae)

Alexander V. Martynov, Dmitry M. Palatov


Clypeocaenis Soldán, 1978 consists of 7 species, 3 of them are known from the Oriental region. Clypeocaenis oligosetosa Soldán, 1983 was described from Vietnam and until now was known only from 2 localities within this country. We found C. oligosetosa in Thailand for the first time. This record significantly extends the known distribution of the species. The main distinguishing characters of the larvae of C. oligosetosa are illustrated. We observed a few small morphological differences between Thai specimens, investigated paratypes of C. oligosetosa and its original description.


new record; type material; Pannota; Clypeocaenini; Thailand; Vietnam; Oriental Region

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Malzacher, P. 2013. Caenidae from East Kalimantan, Borneo (Insecta: Ephemeroptera). With a discussion on phylogeny of the new tribe Clypeocaenini, subfamily Caeninae. Stuttgarter Beiträge zur Naturkunde A, Neue Serie 6: 21–55.

Malzacher, P. & Staniczek, A.H. 2016. Two new genera of Caeninae (Ephemeroptera: Caenidae), with a cladistic analysis of the tribe Clypeocaenini. Stuttgarter Beiträge zur Naturkunde A, Neue Serie 9: 41–62.

Martynov, A.V., Palatov, D.M. & Boonsoong, B. 2016. A new species of Dudgeodes Sartori, 2008 (Ephemeroptera: Teloganodidae) from Thailand. Zootaxa 4121: 545–554.

Sites, R.W., Wang, T., Permkam, S. & Hubbard, M.D. 2001. The mayfly genera (Ephemeroptera) of southern Thailand. Natural History Bulletin of the Siam Society 49: 243–268.

Soldán, T. & Landa, V. 1991. Two new species of Caenidae (Ephemeroptera) from Sri Lanka; pp. 235–246, in: Alba-Tercedor, J. & Sanchez-Ortega, A. (eds.). Overview and strategies of Ephemeroptera and Plecoptera (Proceedings of the 6th International Conference of Ephemeroptera & 10th International Symposium on Plecoptera, 24–30 July 1989, Granada, Spain). Gainesville: Sandhill Crane Press.

Soldán, T. 1978. New genera and species of Caenidae (Ephemeroptera) from Iran, India and Australia. Acta Entomologica Bohemoslavaca 75(2): 119–129.

Soldán, T. 1983. Two new species of Clypocaenis (Ephemeroptera, Caenidae) with a description of adult stage and biology of the genus. Acta Entomologica Bohemoslovaca 80(3): 195–206.

Soldan, T. 1991. An annotated list of mayflies (Ephemeroptera) found in the Nam Cat Tien National Park; pp. 4–9, in: Spitzer, K., Leps, J. & Zahrada, M. (eds.). Nam Cat Tien, Czechoslovak Vietnamese Expedition, November 1989, Research Report. Institute of Entomology of Czechoslovak Academy of Sciences, České Budějovice.