Rattanawannee, Atsalek, Orawan Duangpakdee, Preecha Rod-im, and Randall Hepburn. 2015. “Discrimination of Two Tetragonula (Apidae: Meliponini) Species in Thailand Using Geometric Morphometric Analysis of Wing Venation”. Agriculture and Natural Resources 49 (5). Bangkok, Thailand:700-710. https://li01.tci-thaijo.org/index.php/anres/article/view/243730.