A new species of Minagrion Santos, 1965 (Odonata: Coenagrionidae) from the Cerrado of Northern Minas Gerais state, Brazil Author Vilela, Diogo Silva Author Jacques, Gabriel De Castro Author Souza, Marcos Magalhães De text Zootaxa 2023 2023-11-16 5374 2 255 262 https://mapress.com/zt/article/download/zootaxa.5374.2.6/52289 journal article 10.11646/zootaxa.5374.2.6 1175-5326 10146516 E9F72C3C-A005-415D-8D36-2C0EA9036C26 Key to male Minagrion (adapted from Vilela et al. 2020 ) 1. Larger species ( 54–61 mm total length), abdomen 2x longer than Fw length........................ M. mecistogastrum 1’. Medium species ( 31–44 mm total length), abdomen less than 2x the length of Fw.................................. 2 2. Dorsal plate of cercus broad; ventrobasal portion only 1/5 of the cercus length; tubercle digit-like with a rounded apex..... 3 2’. Dorsal plate of cercus narrow; ventrobasal portion at least 1/2 of cercus length; tubercle never digit-like or with rounded apex ................................................................................................... 4 3. Cercus less forcipate, with ventral margin mostly linear ( Figs. 4e , 5b ).................................... M. waltheri 3’. Cercus markedly forcipate, with the ventral margin deeply concave ( Figs. 4b , 5c ).......................... M. veredae 4. Longitudinal ridge of cercus not entire (i.e., disrupted along its length) forming a basal and an apical ridge, more pronounced on the distal 1/2; sclerotized apex of cercus globose with no apparent teeth; tubercle quadrangular with a slightly concave apex......................................................................................... M. canaanense 4’. Longitudinal ridge of cercus entire (i.e., a continuous ridge along its length); sclerotized apex of cercus not globose, with evident teeth; tubercle not as above....................................................................... 5 5. Cercus shorter than S 10 in lateral view, and with acute sclerotized apex, with one strong tooth; tubercle triangular with acute apex........................................................................................ M. ribeiroi 5’. Cercus subequal in length to S 10 in lateral view, rounded sclerotized apex, with one strong tooth; dorsal portion of cercus broad at basal half, narrowing towards the base, ventrobasal portion roughly quadrangular, reaching 1/2 of cercus; tubercle quadrangular, with the excavated “beak-like” apex; genital ligula with a small inner fold at the flexure in lateral view, a pair of lateral sclerotized processes, and entire apex....................................................... M. caldense