Amblycerus dispar (Sharp, 1885)

Santos, Aluska Tavares Dos & Ribeiro-Costa, Cibele Stramare, 2019, Rearrangements in some species groups of Amblycerus Thunberg, 1815 (Coleoptera: Chrysomelidae: Bruchinae) including keys, description of a new species, new host plant and distributional records, Zootaxa 4701 (2), pp. 101-148 : 106

The dispar group

( Figs 1–4, 7–14 , 22–27 , 35–40 , 48–53 , 61–70, 78–83, 91–96, 97–102, 117–119)

Included species: A. crassipunctatus , A. dispar , A. insuturatus , A. schwarzi , A. taeniopygus and Amblycerus goianiensis Santos & Ribeiro-Costa , sp. n.

Diagnosis. The dispar group is characterized by the following combination of characters: scutellum tridentate with median tooth longer than the lateral ones (Figs 61–70); elytra with uniform pattern of vestiture ( Figs 9–14 ); and pygidium with dense median strip of setae ( Figs 78–83 ). It can be separated from the spondiae group mainly by the elytra with uniform pattern of vestiture (vertical stripes of setae, spondiae group) and internal sac of male genitalia with different number and form of sclerites (two pairs and one unpaired sclerite with similar form, in the spondiae group).

Figures

FIGURES 1–8. Amblycerus dispar: 1. dorsal; 2. scutellum. A. taeniopygus: 3. head, A. insuturatus: 4. lateral. A. alternatus: 5. detail of coarse punctures on median region of pronotum; 6. detail of coarse punctures on median region of pygidium. A. crassipunctatus: 7–8. Male genitalia: 7. Median lobe; 8. Tegmen. Scale bars = 1.0 mm (Figs 5, 7, 8) and 0.25 mm (Fig. 12).

FIGURES 9–14. Dorsal, group dispar: 9. Amblycerus crassipunctatus, 10. A. dispar, 11. A. insuturatus, 12. A. schwarzi, 13. A. taeniopygus and 14. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 1.0 mm.

FIGURES 22–27. Head, group dispar: 22. Amblycerus crassipunctatus, 23. A. dispar, 24. A. insuturatus, 25. A. schwarzi, 26. A. taeniopygus, 27. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 1.0 mm.

FIGURES 35–40. Lateral. group dispar: 35. Amblycerus crassipunctatus, 36. A. dispar, 37. A. insuturatus, 38. A. schwarzi, 39. A. taeniopygus and 40. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 1.0 mm.

FIGURES 48–53. Pronotum, group dispar: 48. Amblycerus crassipunctatus. 49. A. dispar. 50. A. insuturatus. 51. A. schwarzi. 52. A. taeniopygus and 53. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 1.0 mm.

FIGURES 78–83. Pygidium, group dispar: 78. Amblycerus crassipunctatus, 79. A. dispar, 80. A. insuturatus, 81. A. schwarzi, 82. A. taeniopygus and 83. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 1.0 mm.