Survey of the Notonectidae (Insecta, Hemiptera, Heteroptera, Nepomorpha) from northeastern Brazil Author Jordão, Rafael 0000-0002-0339-5293 Laboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil Author Barbosa, Julianna Freires 0000-0002-5276-194X Laboratório de Entomologia, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil Author Moreira, Felipe Ferraz Figueiredo 0000-0002-6692-0323 Laboratório de Biodiversidade Entomológica, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil text ZooKeys 2025 2025-04-01 1233 245 288 journal article 309062 10.3897/zookeys.1233.120598 7df06195-b5a9-4061-806e-b5d05fb4e4ea E95BDD70-F0F2-429D-9981-55AA5C47BBEA Buenoa amnigenus ( White, 1879 ) Fig. 10 A Anisops amnigenus White, 1879: 271 [original description]. Buenoa amnigenus ; Kirkaldy (1904) : 120 [genus transfer]. Diagnosis. Small species, male length 4.8–5.4 mm . Synthlipsis very narrow, <1 / 10 of vertex width. Labrum sided by pair of tufts of setae. Labial prong slightly longer than third labial article, originating proximally on article. Fore femur without stridulatory area. Taxonomic notes. A member of the salutis group. It differs from the most similar species, B. amnigenoidea Nieser, 1970 , by the chaetotaxy of the labrum and minor characteristics of the fore trochanter, femur, and tibia. Also, from B. amnigenopsis Nieser, 1975 by the presence of a notch on the apex of the fore femur of this species, which is absent in B. amnigenus . Finally, it can be distinguished from B. salutis based on the larger size, narrower synthlipsis and more pronounced tylus. More detailed comparisons between species of this group can be found in Barbosa and Nessimian (2013 a ). Distribution. Argentina ( Bachmann 1971 ). Bolivia ( Truxal 1953 ). Brazil : AL [new record], AM ( White 1879 ; Truxal 1953 ; Nieser 1975 ; Barbosa and Nessimian 2013 a ; Barbosa and Rodrigues 2013 ), BA [new record], CE ( Truxal 1953 ; Nieser 1975 ; this work), GO ( Truxal 1957 ), MG ( Valbon et al. 2021 ), MS ( Truxal 1953 ), MT ( Heckman 1998 ), PA ( Truxal 1953 ; Barbosa and Nessimian 2013 a ), PB ( Truxal 1953 ; Nieser 1975 ), PE ( Truxal 1953 ; Nieser 1975 ; this work), PI [new record], RN ( Truxal 1953 ; Nieser 1975 ), SP ( Castanhole et al. 2013 ; Pereira et al. 2015 a ), TO ( Truxal 1957 ). Guyana ( Truxal 1953 ). Paraguay ( Truxal 1953 ). Peru ( Truxal 1953 ). Suriname ( Nieser 1975 ). Trinidad & Tobago ( Nieser and Alkins-Koo 1991 ). Material examined. Brazil ,! AL , 2018: 1 ♂ : Campo Grande municipality, açude, AL 6 station , 07. VII. 2018 . -9.9436 , -36.8275 . C. F. B. Floriano , J. M. S. Rodrigues & J. F. Barbosa cols., CEIOC 81609 ; 1 ♂ , 1 ♀ : Piaçabuçu municipality , Rio Piauí , 02. V. 2018 . -10.347 , -36.4828 . C. F. B. Floriano , J. M. S. Rodrigues & O. M. Magalhães cols., CEIOC 81703 . ! BA , 2018: 1 ♂ : Lençóis municipality , PNCD , Ribeirão do Meio, Terra 9 station , 341 m , 22. VIII. 2018 . -12.586 , -41.3817 . C. C. Gonçalves col., CEIOC 81907 . CE , 2019: 2 ♂ : Aiuaba municipality , EEA , casa da gameleira, Terra 1 station , light trap , 517 m , 09. IV. 2019 . -6.6976 , -40.2812 . J. M. S. Rodrigues col., CEIOC 81901 ; 1 ♂ , 1 ♀ : same data, except: Sítio Volta de Cima , sede do ICMBIO, Terra 4 station , light trap , 460 m , 10. IV. 2019 . -6.6025 , -40.1286 , CZMA ; 1 ♂ : same data, except: Sítio boa Vista , Terra 6 station , light trap , 583 m , -6.7256 , -40.2226 , CZMA ; 1 ♂ : same data, except: Terra 8 station , light trap , 650 m , 11. IV. 2019 . -6.7425 , -40.3065 . C. C. Gonçalves col., CZMA ; 1 ♂ , 1 ♀ : same data, except: Sítio do Martins , Terra 10 station , light trap , 476 m , 12. IV. 2019 . -6.6667 , -40.1750 . J. S. Prando col., CEIOC 81899 ; 1 ♂ : same data, except: C. C. Gonçalves col., CEIOC 81898 ; 1 ♂ , 1 ♀ : same data, except: J. M. S. Rodrigues col., CZMA ; 1 ♂ , 15 ♀ : same data, except: casa da gameleira, Água 1 station , 532 m , 09. IV. 2019 . -6.6992 , -40.2908 , CEIOC 81900 ; 2 ♂ , 3 ♀ : same data, except: Açude do Letreiro , Água 12 station , 475 m , 13. IV. 2019 . -6.6163 , -40.1545 , CEIOC 81902 ; 2 ♂ , 3 ♀ : same data, except: CEIOC 81902 . Same state, 2021: 6 ♂ , 4 ♀ : same data, except: estrada, Terra 3 station , light trap , 505 m , 08. VI. 2021 . -6.6974 , -40.2819 , CEIOC 81906 ; 7 ♂ , 1 ♀ : same data, except: C. C. Gonçalves col., CEIOC 82012 ; 2 ♂ , 1 ♀ : same data, except: Terra 5 station , light trap , 493 m , 03. VI. 2021 . -6.7003 , -40.1919 , CZMA ; 6 ♂ , 2 ♀ : same data, except: estrada, Terra 11 station , light trap , 634 m , 05. VI. 2021 . -6.7259 , -40.3065 . C. C. Gonçalves col., CZMA ; 2 ♂ , 2 ♀ : same data, except: estrada próxima ao riacho, Terra 16 station , light trap , 498 m , 06. VI. 2021 . -6.6872 , -40.2683 . CZMA ; 1 ♂ , 4 ♀ : same data, except: Terra 19 station , light trap , 634 m , 07. VI. 2021 . -6.7259 , -40.3065 , CZMA ; 1 ♂ : same data, except: C. C. Gonçalves col., CZMA ; 1 ♂ , 1 ♀ : same data, except: Sítio Jatobá , açude, Água 1 station , 571 m , 06. VI. 2021 . -6.7351 , -40.2424 . J. M. S. Rodrigues & F. F. F. Moreira cols., CZMA ; 3 ♂ , 2 ♀ : same data, except: Sítio Volta de Cima , lago, Água 4 station , 434 m , 05. VI. 2021 . -6.6019 , -40.1246 , CZMA ; 16 ♂ , 15 ♀ , 4 nymphs: same data, except: Sítio Volta de Baixo , açude, Água 8 station , 431 m , 06. VI. 2021 . -6.6263 , -40.1339 , CEIOC 81905 ; 7 ♂ , 7 ♀ : same data, except: braço de rio, açude, Água 11 station , 513 m , 07. VI. 2021 . -6.6997 , -40.1917 , CZMA . PE , 2019: 2 ♂ , 1 ♀ : Tupanatinga municipality , PNCA , Fazenda Laranjeiras, Terra 18 station , light trap , 610 m , 20. III. 2019 . -8.4618 , -37.3273 . J. M. S. Rodrigues col., CZMA ; 2 ♂ , 3 ♀ : same data, except: CEIOC 81904 . ! PI , 2020: 1 ♂ , 1 ♀ : Caracol municipality , PNSC , estrada próxima do Povoado Capim, Terra 15 station , light trap , 17. II. 2020 . -9.2149 , -43.5034 . A. A. Alves col., CEIOC 81903 .