Two new species and a new record of the ant genus Smith, 1853 (Hymenoptera, Formicidae, Myrmicinae) from Thailand.

Smith, 1853 is distributed in the Old World tropics, from Africa, Asia, New Guinea to Australia. There are four species (Guérin-Méneville, 1844), Smith, 1857, Emery, 1889, and Smith, 1857 previously recorded from Thailand. In the present paper, two new species of the genus, Yodprasit & Jaitrong, and Yodprasit & Jaitrong, , are described based on the worker caste.

The ant genus Myopias Roger, 1861 (Hymenoptera: Formicidae: Ponerinae) in Thailand, with descriptions of three new species.

The genus Myopias Roger, 1861 is distributed in the Australian, Oceanian, Oriental and southern Sino-Japanese realms. Currently 40 valid species and three subspecies have been described, but none have ever been recorded for Thailand. Here we review the species of Thailand, recognizing seven in total.

CO2 efflux from subterranean nests of ant communities in a seasonal tropical forest, Thailand.

Many ant species construct subterranean nests. The presence of their nests may explain soil respiration "hot spots", an important factor in the high CO2 efflux from tropical forests. However, no studies have directly measured CO2 efflux from ant nests.