211/5 Moo 4, Takhli, Nakhon Sawan, 60140, Thailand. .
Zootaxa. 2022 May 5;5133(3):346-354. doi: 10.11646/zootaxa.5133.3.2.
Macromia siamensis sp. nov., is described and illustrated based on male specimens collected from Ban Luang, Chom Thong, Chiang Mai province, Thailand. Macromia siamensis sp. nov. shares the hammer-shaped tip of posterior hamulus with M. amphigena Selys, 1871, M. sombui Vick, 1988, M. cydippe Laidlaw, 1922, M. vangviengensis Yokoi et Mitamura, 2002, M. clio Ris, 1916, M. malleifera Lieftinck, 1955, and M. macula Zhou, Wang, Shuai Liu, 1994, but it differs from all of the mentioned species by a set of coloration characters including antehumeral stripe, abdominal pattern and facial markings.
大纹青蝇属一新种，暹罗大纹青蝇描述并图示，基于雄性标本采集自 Ban Luang，Chom Thong，清迈府，泰国。暹罗大纹青蝇新种与 M. amphigena Selys，1871、M. sombui Vick，1988、M. cydippe Laidlaw，1922、M. vangviengensis Yokoi et Mitamura，2002、M. clio Ris，1916、M. malleifera Lieftinck，1955 和 M. macula Zhou，Wang，Shuai Liu，1994 共有后小钩锤状末端，但通过一系列颜色特征与所有上述物种不同，包括前肩条纹、腹部图案和面部标记。
