Atlanticolycus japi, Nascimento & Bocakova, 2023

Nascimento, Elynton Alves Do & Bocakova, Milada, 2023, A new genus of Eurrhacini from the Brazilian Atlantic Forest (Coleoptera: Lycidae: Lycinae) with an updated key to genera, Zootaxa 5383 (2), pp. 242-250 : 245-246

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 ).

Figures

FIGURE 19. Geographical distribution of Atlanticolycus species.

FIGURES 1−6. 1. Pronotum of Atlanticolycus camposgerais sp. nov.; 2–6. Habitus: 2. A. camposgerais; 3. A. japi sp. nov.; 4. A. itatiaia sp. nov.; 5. A. ilhabela sp. nov.; 6. A. morretes sp. nov. Scales: Fig. 1: 0.5 mm, Figs. 2–6: 1.0 mm.

FIGURES 7−18. Genitalia: 7–16. Aedeagi lateral and ventral views: 7–8. A. camposgerais sp. nov.; 9–10. A. japi sp. nov.; 11–12. A. itatiaia sp. nov. (stained with Chlorazol Black); 13–14. A. ilhabela sp. nov.; 15–16. A. morretes sp. nov.; 17–18: female genitalia. 17. A. camposgerais; 18. A. japi. Arrows indicate the following structures: a– phallic dorsoapical projections, b– phallus apex, c– parameral thorns. Scale: 0.5 mm.