Three New Insects Recorded and Updated in Cambodia Checklist

Calochroa carissima (Fleutiaux, 1919), Cylindera (Ifasina) spinolae koratensis Naviaux, 1991 and Prothyma schmidtgoebeli Horn, 1895 are the new records for Cambodia, according to Cambodian Journal of Natural History.

The new records were made by conservationists in the research and fieldwork at four study sites during the early wet season (between April 28 and May 21, 2018) within two regions in Kratie province.

A total of 147 specimens representing 16 species were collected. All 16 species are ?rst records for Kratie province, whereas three are new records for Cambodia: Calochroa carissima (Fleutiaux, 1919), Cylindera (Ifasina) spinolae koratensis Naviaux, 1991 and Prothyma schmidtgoebeli Horn, 1895.

Calochroa carissima (Fleutiaux, 1919) was almost exclusively collected on sand banks along rivers, both on open sunny sand bars fringing the Mekong and along the small sandy (1�2 metres wide) edges of a shaded dipterocarp forest river close to basecamp 4 (BC4). The species is a powerful ?yer and di?cult to catch during the day. At night, it aggregates on low vegetation about one metre above ground level along these sandy ridges in large numbers, with sometimes over 100 individuals on a single plant and can then easily be collected. Tiger beetles from sandy edges of rivers are known to roost on low vegetation at night to avoid predation (Pearson & Anderson, 1985; Bhargav & Uniyal, 2008). Calochroa carissima is known from southern Laos mostly along the Mekong, and it is expected to occur all along the Mekong River and its tributaries.

Cylindera (Ifasina) spinolae koratensis Naviaux, 1991 is only known from a limited number of sites, for instance in western Thailand (Naviaux & Pinratana 2001). We recorded the species almost exclusively on dirt roads and dry river beds in patches of lowland dipterocarp forest. Cylindera (Ifasina) spinolae spinolae is more widely distributed and also recorded from Cambodia.

Prothyma schmidtgoebeli Horn, 1895 was also only recorded in patches of lowland dipterocarp forest and was commonly observed on dirt roads and dry river beds in the forest. The species is common in the neighbouring countries of Thailand, Laos and Vietnam (Naviaux & Pinratana, 2001) and was expected to occur in Cambodia. Our ?rst country record for the species is indicative of the paucity of information for tiger beetles in Cambodia.

Cambodia has experienced a surge of interest in its remaining forest ecosystems and associated biodiversity in recent years. Most of the attention has been concentrated on a select number of locations such as the Cardamom Mountains in the southwest and coastal islands, whereas inland lowlands have received little attention. Floodplains in the Mekong Basin are among the most vulnerable areas to environmental pressures associated with rapid economic and demographic development.

Source: Agency Kampuchea Press