Vol. 50 No. 6, 2011
A Review of the Genus Thermocyclops (Crustacea: Copepoda: Cyclopoida) in Cambodia
Rachada Chaicharoen1, La-orsri Sanoamuang1,2, and Maria Hołyńska3,*
1Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
2Faculty of Science, Mahasarakham University, Maha Sarakham 44150, Thailand
3Museum and Institute of Zoology, PAS, 00-950 Warszawa, Wilcza 64, Poland
Rachada Chaicharoen, La-orsri Sanoamuang, and Maria Hołyńska (2011) Cambodia
is one of the least explored areas in Southeast Asia, where very little
reliable information on the freshwater copepod fauna is available.
Recent and extensive collecting in 7 Cambodian provinces, from the
western part of the country as far as the Mekong River, provided the
material for our present paper which reviews the Thermocyclops fauna of
Cambodia. Six species (T. crassus, T. decipiens, T. maheensis, T. rylovi, T. vermifer, and T. wolterecki) were found; and except for T. crassus,
all of these are new records for the country. The morphology is briefly
described, and the diagnostic characters are illustrated. Thermocyclops
wolterecki is redescribed, based on specimens from Cambodia, but also
from the types and other material from the type locality (Lake Lanao,
the Philippines). A lectotype of T. wolterecki is designated here. An identification key to all Thermocyclops taxa so far reported from Cambodia is given. Our data suggest that the Cambodian Thermocyclops is linked with both the neighbouring Asian fauna and via the Malay Archipelago with the Australian fauna.
Key words: Cyclopidae, Taxonomy, Zoogeography, Tropical Asia.