Ávila JÚnior Walter F, Lencioni Frederico A A, Carneiro Marco AntÔnio A
Universidade Federal de Ouro Preto, Lab. Entomologia Ecológica DEBIO/ICEB, Campus Morro do Cruzeiro, CEP 35400-000, Ouro Preto, MG, Brazil..
Zootaxa. 2020 May 18;4779(1):zootaxa.4779.1.9. doi: 10.11646/zootaxa.4779.1.9.
Heteragrion itacolomii sp. nov. (♂ holotype: Brazil, Minas Gerais, Ouro Preto, Parque Estadual do Itacolomi, Trilha da Lagoa, 1350m, 23-xii-2018, 20º25'57"S, 43º30'27"W; and ♀ allotype, same data as holotype, but collected in tandem 20-iii-2019, deposited in ABMM - CCT/UFMG collection) is described and illustrated. The new species is similar to H. tiradentense Machado Bedê, 2006, H. muryense Costa Santos, 2000 and H. mantiqueirae Machado, 2006, based on coloration of the thorax and has cerci similar to those of H. freddiemercuryi Lencioni, 2013. It belongs to Group A and differs from other congeners by the morphology of the ventral expansion and the medial process of the cerci in males. Information about the intersternite of the single female specimen is also provided.
异痣蟌属新物种伊塔科洛米异痣蟌（♂ 正模标本：巴西，米纳斯吉拉斯州，欧鲁普雷图，伊塔科洛米州立公园，拉戈阿小径，海拔1350米，2018年12月23日，南纬20°25′57″，西经43°30′27″；♀ 副模标本，采集数据与正模标本相同，但采集时间为2019年3月20日，存于ABMM - CCT/UFMG标本馆）被描述并图示。该新物种基于胸部颜色与2006年的蒂拉登滕斯异痣蟌、2000年的穆里恩斯异痣蟌及2006年的曼蒂凯拉异痣蟌相似，且其尾铗与2013年的弗雷迪·默丘里异痣蟌的尾铗相似。它属于A组，雄性个体的腹部腹板扩展形态和尾铗内侧突起形态使其与其他同属物种相区别。文中还提供了唯一雌性标本的腹节间信息。
