Brachymetra albinervus (Amyot & Serville, 1843)

Lima Franco, Cleilton, Mourão dos Santos Rodrigues, Juliana, Silva de Azevêdo, Carlos Augusto & Moreira, Felipe Ferraz Figueiredo, 2021, Gerromorpha (Insecta, Hemiptera, Heteroptera) from eastern Maranhão state, northeastern Brazil, Check List 17 (2), pp. 551-568 : 552-553

Brachymetra albinervus (Amyot & Serville, 1843)

Figure 5A–D New records. BRAZIL • 1 ♂, 6 ♀; Maranhão, Du-

que Bacelar, Araim stream; −04.16861, −042.99277; 14 Jul. 2019; C.L. Franco et al. leg.; LEAq 00014 • 2 ♂; Maranhão, Caxias, Areia Branca stream; −05.03720, −043.48580; 13 Aug. 2019; C.L. Franco et al. leg.; LEAq 00056 • 1 ♂, 2 ♀; Maranhão, Caxias, Batatal stream; −04.96166, −043.38916; 07 Aug. 2019; C.L. Franco et al. leg.; LEAq 00007 • 1 ♂, 3 ♀; Maranhão, Caxias , Bu- riti stream; −04.91500, −043.11333; 28 Aug. 2019; C.L. Franco et al. leg.; LEAq 00154, 00160 • 1 ♂; Maranhão, Codó, Buriti Dantas stream; −04.70388, −043.83250; 03 Oct. 2019; C.L. Franco et al. leg.; LEAq 00179 • 4 ♂, 7 ♀; Maranhão, Caxias, Cajazeiras stream; −05.01750, −043.42944; 07 Aug. 2019; C.L. Franco et al. leg.; LEAq 00031 • 31 ♂, 50 ♀; Maranhão, Caxias, Correntinho stream; −04.82666, −043.37694; 26 Aug. 2019; C.L. Franco et al. leg.; LEAq 00058, 00062, 00065, 00072, 00079 • 15 ♂, 16 ♀; Maranhão, Caxias, Jatobá stream; −04.90972, −043.11666; 28 Aug. 2019; C.L. Franco et al. leg.; LEAq 00123, 00130, 00137, 00142, 00146, 00240 • 1 ♂, 2; Maranhão, Merim Lagoon ; −04.89861, −043.44027; 13 Aug. 2019; C.L. Franco et al. leg.; LEAq 00052 • 9 ♂, 7 ♀; Maranhão, Caxias, Lamego stream; −04.81527, −043.34361; 12 Aug. 2019; C.L. Franco et al. leg.; LEAq 00033, 00035, 00039 • 6 ♂, 30 ♀; Maranhão, Caxias, Limpeza stream; −04.67611, −043.54222; 27 Aug. 2019; C.L. Franco et al. leg.; LEAq 00094, 00097, 00102, 00104 • 6 ♂, 7 ♀; Maranhão, Caxias , Planaçu- car stream; −04.90666, −043.36250; 12 Aug.2019; C.L. Franco et al. leg.; LEAq 00044, 00047 • 1 ♀; Maranhão, Aldeias Altas, Poção stream; −04.67388, −043.54138; 27 Aug. 2019; C.L. Franco et al. leg.; LEAq 00219 • 1 ♂, 5 ♀; Maranhão, Caxias, Primavera stream; −04.84916, −043.49527; 06 Aug. 2019; C.L. Franco et al. leg.; LEAq 00001, 00270 • 2 ♂; Maranhão, Codó, Saco river ; −04.62482, −043.90249; 02 Oct. 2019; C.L. Franco et al. leg.; LEAq 00278 .

Identification. Our specimens were identified based on the following characters: antennomere I shorter than II and III together; eye not surpassing the anterolateral angle of the pronotum; pronotum with apex rounded, reaching the mesoacetabulum in the apterous form ( Fig. 5A); dorsum of acetabula with silvery setae ( Fig. 5A, C); fore femur robust and slightly arched, with sparse conical black setae ventrally ( Fig. 5B); and male abdominal segment VIII in natural position with about half of its length exposed ( Fig. 5B, D). This combination of characters distinguishes them from all known congeners ( Cordeiro 2017).

Distribution in Brazil. AM, PA, MA*, CE, BA, MT, MG, SP, RJ.