Multivariate morphometric study of Apis florea in Thailand
Thadsanee Chaiyawong, Sureerat Deowanish, Siriwat Wongsiri, H Allen Sylvester, Thomas E Rinderer and Lilia De Guzman
Morphometric analyses of Apis florea in Thailand were carried out in order to detect differences within this species. The nine body parts selected for analysis were: proboscis, antenna, forewing, hindwing, hind leg, the third and sixth sternites, and the third and fourth tergites. Twenty-two characters, consisting of widths, lengths or angles, were measured. Factor analysis sorted 14 characters of worker bees into four factors: (Factor 1) characters associated with size, hind leg and antenna; (Factor 2) length of wing venation and forewing; (Factor 3) number of hamuli and venation angle 37; and (Factor 4) venation angle 34. The results of factor and cluster analyses using the 22 characters revealed that the A. florea of Thailand are distributed as one group. Four characters (forewing radial cell length, metatarsus length, 3rd sternite length and antenna length) can be used to separate by Student–Newman–Keuls Statistics the A. florea of Samui and Pha-ngan Islands from the mainland.