Atlanticolycus, 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 : 249

Key to the species of Atlanticolycus gen. nov.

1. Maxillary palpomere 2 almost twice longer than 3. Phallus curved in lateral view, sharp dorsoapical projections slightly curved............................................................................................. 2

- Maxillary palpomere 2 longer than twice the length of palpomere 3. Phallus with dorsoapical sharp projections strongly curved subapical or several dorsally oriented projections............................................................ 3

2. Pronotum with median longitudinal carina in anterior 1/3 with areola mostly in posterior 2/3, connected to the basal margin by a very short carina ( Figs. 1–2 ). Male genitalia with phallus strongly curved and parameres medially constricted in ventral view ( Figs. 7–8 )...................................................................... A. camposgerais sp. nov.

- Pronotum with median longitudinal carina bifurcating in anterior 1/4 forming areola in almost basal 3/4, connected directly to the posterior margin. ( Fig. 5 ). Male genitalia with phallus slightly curved and parameres slightly tapering towards the apex in ventral view ( Figs. 13–14 )............................................................... A. ilhabela sp. nov.

3. Maxillary palpomere 2 much longer than palpomere 3, elytra with yellow median transversal band increasing in thickness towards marginal costae ( Fig. 6 ), phallus apically presenting projections with several thorns, parameres medially constricted in ventral view bearing ventral and lateral thorns.............................................. A. morretes sp. nov.

- Maxillary palpomere 2 slightly longer than palpomere 3...................................................... 4

4. Pronotum with areola connected to the posterior margin by basal carina ( Fig. 3 ), phallus strongly bent dorsally, apex slightly ventrally bent, and dorsally oriented apical projections hooked, parameres with ventral subapical thorns..... A. japi sp. nov.

- Pronotum with areola connected to the posterior margin by a very short carina ( Fig. 4 ), phallus curved basally with 2/3 straight in lateral view,presenting double dorsoapical projections and apex ventrally bent, parameres with ventral subapical and apical thorns................................................................................ A. itatiaia sp. nov.

Figures

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.