Heteragrion brianmayi : Lencioni 2013: 15–16 H. cauei Lencioni 2017: 133–134 Taxonomic revision of the Neotropical genus Heteragrion Selys, 1862 (Zygoptera: Heteragrionidae): male morphology, new species and illustrated key Vilela, Diogo Silva Lencioni, Frederico A. A. Bota-Sierra, Cornelio A. Ware, Jessica L. Bispo, Pitágoras C. Zootaxa 2023 2023-10-16 5356 1 1 96   Heteragrion brianmayi : Lencioni 2013: 15–16   Lencioni, 2013 : Lencioni 2013 [151,621,402,429] Insecta Megapodagrionidae Heteragrion Animalia Odonata 31 32 Arthropoda species brianmayi  ( Figs. 18a–d) [Key locator: Key to Group A species, couplet 25’]      Heteragrion brianmayi: Lencioni 2013: 15–16(description of ♁ and ♀from São Paulo state, Brazil; diagnosis, distribution and comparison with other species; figs. 27, 38d–f, 43a–c, 49a–b, 58b–c, 66–67, 76); Ávila-Jr. et al.2017: 284 (comparison with  H. cauei);—  Lencioni 2017: 133–134(general taxonomic information; distribution; figs. 60–61).   Material examined. 1♁ ( HOLOTYPE) BRAZIL, São Paulo state, Caraguatatuba, Parque Estadual da Serra do Mar—Núcleo Caraguatatuba,  5.ii.2000, ( -23.5933, -45.4186,  61 masl), F.A.A. Lencionileg., FAAL; 1♁ ( PARATYPE) Ubatuba,  12.i.2011, F.A.A. Lencionileg., FAAL.  Known distribution. Brazil(coastal areas of São Paulo state).   Diagnosis and remarks.The IUCN Red List has classified  H. brianmayias Data Deficient due to a paucity of information on its distribution and potential threats ( Vilela & Guillermo-Ferreira 2021b). The species is close to  H. itacolomiiand can be distinguished from this and the remainder of Group A species by the following combination of characteristics: BP ventral concavity not greatly expanded ( Figs. 18c–d); ML upper plate narrow, longer than wide, ridge centered ( Fig. 18d). 4428728493 2000-02-05 2011-01-12 2000-02-05 F. A. A. Lencioni & Ubatuba Brazil 61 -23.5933 Parque Estadual da Serra do Mar 7 -45.4186 Caraguatatuba 31 32 2 Sao Paulo holotype 4428728451 2000-02-05 2011-01-12 2000-02-05 F. A. A. Lencioni & Ubatuba Brazil 61 -23.5933 Parque Estadual da Serra do Mar 7 -45.4186 Caraguatatuba 31 32 2 Sao Paulo paratype