Synopsis of Miridae (Hemiptera: Heteroptera) in Atlantic Forest Dominion, Espírito Santo State, Brazil: keys, diagnoses, new species, plant associations, and geographic distribution. Part I: Bryocorinae, Cylapinae and Deraeocorinae. Author Ferreira, Paulo Sérgio Fiuza Universidade Federal de Viçosa, Departamento de Entomologia (Full Professor retired), Avenida Peter Henry Rolfs, s / n, Viçosa, MG 36570 - 900, Brazil. Author Martins, David Dos Santos Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural, Rua Afonso Sarlo, 160, Bento Ferreira, Vitória / ES 29052 - 010, Brazil. Author Ferreira, Luciano Santana Fiuza Universidade Federal de Viçosa, Bacharelando em Cooperativismo, Departamento de Economia Rural, Edifício Edson Potsch Magalhães-R. Purdue, Campus Universitário, Viçosa, Minas Gerais, Brazil. Author Fornazier, Maurício José Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural (Incaper), Domingos Martins, ES, Brazil. text Zootaxa 2024 2024-06-12 5468 2 201 254 http://dx.doi.org/10.11646/zootaxa.5468.2.1 journal article 298417 10.11646/zootaxa.5468.2.1 ad0e6247-faa5-4276-a51e-0834afe872cf 1175-5326 11615431 4AD95CF2-297D-40F4-9DA4-71EC980499AA Genus Fulvius Stål Type species: Fulvius anthocoroides Stål, 1862 . Monotypic. Diagnosis. Body length 1.4 to 5.5 mm , dark castaneous to brown, with whitish spots in the center of clavus and the base of cuneus. Head elongate and produced beyond the bases of the antennae; eyes ventrally reaching the long gula; frons horizontal or nearly so; labium extending to the posterior coxae or beyond. Pronotum trapeziform with rounded lateral borders and a sinuate posterior margin; collar prominent; calli large and confluent, occupying twothirds of the anterior portion of pronotum. Mesoscutum mostly visible. Macropterous with subparallel hemelytra, a well-developed membrane, and two closed cells. Ostiolar peritreme opening very reduced. Legs long and slender; hind tibiae longer than pro-or mesotibiae; tarsi 2-segmented with slender claws and a subapical tooth ( Ferreira & Henry 2002 ). Remarks. Fulvius is a global genus with around 80 species worldwide ( Schuh 2002 –2013). Carvalho (1956) published a key to Micronesian species; Carvalho and Gagné (1968) , a key to Galapagos species; Capriles (1969) , a description and key to Puerto Rican species; and Kelton (1985) , a key to Canadian species and discussion. Carvalho & Costa (1994) reviewed the Fulvius species for North, Central, and South America with illustrations of habitus, male genitalia features, diagnosis, and a species key; Gorczyca (2000) , gave synonymies, diagnoses, redescriptions, and key to Afrotropical species; Ferreira & Henry (2002) diagnosed the genus, gave biological notes, and a biogeographic overview; Sadowska-Woda et al. (2006) discussed the structure of female genitalia; and Yasunaga & Miyamoto (2006) diagnosed, discussed, and provided a key to Japanese species ( Schuh 2002 –2013). The first analyses of phylogenetic relationships within the genus Fulvius based on DNA sequence were published by Sadowska-Woda et al. (2008) . Phylogenetic interrelationships within the genus Fulvius were investigated using partial DNA sequence data from two mitochondrial genes: the 16S ribosomal large subunit and cytochrome oxidase I (COI). Specimens are easily collected in a light trap. Characters from the male genitalia of Fulvius are essential for species identification.