Contrasting evolutionary patterns between two haplogroups of Haematobia exigua (Diptera: Muscidae) from the mainland and islands of Southeast Asia by Low, Van Lun, Tan, T.K., Prakash, B.K., Vinnie-Siow, W.Y., Tay, Sun Tee, Masmeatathip, R., Hadi, U.K., Lim, Yvonne Ai Lian, Chen, Chee Dhang, Norma-Rashid, Yusoff, Sofian-Azirun, Mohd