A new genus of Eurrhacini from the Brazilian Atlantic Forest (Coleoptera: Lycidae: Lycinae) with an updated key to genera Author Nascimento, Elynton Alves Do Departamento de Engenharia Ambiental, Universidade Estadual do Centro-Oeste, Rua Professora Maria Roza Zanon de Almeida, s / n, Engenheiro Gutierrez, Irati-PR, Brazil, CEP 84505 - 677. Author Bocakova, Milada Department of Biology, Faculty of Education, Palacky University, Purkrabska 2, CZ- 77140 Olomouc, Czech Republic. text Zootaxa 2023 2023-12-11 5383 2 242 250 https://www.mapress.com/zt/article/download/zootaxa.5383.2.8/52451 journal article 10.11646/zootaxa.5383.2.8 1175-5326 10351318 0C92D47E-22EA-4039-8728-7DC886E34CDF Atlanticolycus japi sp. nov. ( Figs. 3 , 9–10, 18 ) Type material. Holotype , male, BRAZIL : BRASIL, SP, Jundiaí ; REBIO Serra do Japi ; iii.2008 , Lecci, L.S. col. Malaise. ( DZUP ) . Paratypes : 1 female : BRASIL , SP, Jundiaí ; REBIO Serra do Japi , 22.ii.2007 , Nascimento E.A. col. ( DZUP ) ; 1 female , same data, 18.xii.2007 ( DZUP ) . Diagnosis: Eye diameter 1.4× longer than interocular distance. Maxillary palpomere 2 is about 2.5× longer than 3. Pronotum 1.2× wider than long, median longitudinal carina at apical 1/4 bifurcating medially forming areola occupying the median 2/4, connected to the posterior margin by a basal carina. Elytra dark brown with a yellow irregular median transversal band ( Fig. 3 ). Phallus curved from basal half in lateral view, with apex slightly ventrally-oriented dorsally-oriented and hooked apical projections ( Fig. 9a, b ), each paramere with ventral subapical thorns ( Fig. 9c ). Description : Basal 1/3 of maxillary palpomere 2 yellow. Trochanters yellow, basal 1/4 of median femur yellow. Pronotum dark brown with lateral sides and anterior margin yellow. Elytra dark brown with a short portion of the humeral region and irregular median transversal band yellow ( Fig. 3 ). Eye diameter 1.4× longer than interocular distance in male. Male antennomeres 3−5 almost of the same length. Maxillary palpomere 2 almost as long as 4 and about 2.5× longer than 3. Pronotum 1.2–1.3× wider than long, median longitudinal carina bifurcating in anterior 1/4 forming areola occupying the median 1/2, connected to the posterior margin by a basal carina. Scutellum with posterior margin shallowly emarginated. Prosternum trapezoidal, mesoventrite trapezoidal. Elytra 3.9× longer than humeral width in male, 4.4–4.5× longer than humeral width in female, and intercostal intervals with irregular cells. Hind femora 2.9× longer than trochanter length. Male genitalia with short phallus, curved from basal half in lateral view, with dorsally-oriented hooked apical projections and dorsal subapical thorns ( Fig. 9a ), apex of phallus slightly ventrally-oriented ( Fig. 9b ); parameres elongate, almost as long as phallus, ventrally bent towards apex in lateral view, almost straight in ventral view, apically rounded with ventral subapical thorns ( Fig. 9c ) and joined basally by a ring-like bridge, phallobase asymmetrical and ¾ as long as parameres length ( Figs. 9–10 ). Female genitalia with short valvifers forming thin ventral bridge, coxites long, medially arcuately emarginate, styli as long as valvifers ( Fig. 18 ). Body length: 6.0 mm (males), 5.9–6.7 (females), humeral width: 1.3 mm (males), 1.3–1.5 (females). Etymology : The specific name is a noun in apposition taken from the type locality, Japi Mountain Range Biological Reserve. Distribution : Brazil : Southeastern region, São Paulo state , Jundiaí municipality ( Fig. 19 ).