Amblycerus schwarzi Kingsolver, 1970

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 : 119-125

Amblycerus schwarzi Kingsolver, 1970

( Figs 12 , 25 , 38 , 51 , 67, 68, 81, 94, 100, 118)

Amblycerus schwarzi Kingsolver, 1970: 477 (desc., type, distr., key, host); Johnson & Kingsolver, 1981: 410 (distr.); Udayagiri & Wadhi, 1989:14 (cat., distr., host.); Johnson & Siemens, 1991: 165 (bio.); Romero et al. 1996: 86, 87, 158 (distr., host., key); Marin & Kingsolver, 1997 (host., new record distr.); Romero et al. 2002 (phyl.).

Types examined. Paratype deposited in DZUP, 1 male, with labels: 17.iv—26. viii,\ 1938. Oxf. Um.\ CAYMAN IS.\ Bio. Exped. coll. by C. B. Lewis, G. H. Thompson.; 13.v.1938.\ Grand\ Cayman,\ East end of. East End.\ Light trap A.; PARATYPE [label with blue border]\ Amblycerus \ schwarzi\ Kingsolver; DZUP\ 130646; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. Paratype deposited in DZUP, 1 female, with labels: Cayamas\ [illegible] Cuba; E A Schwarz\ Collector; ♀; PARATYPE [label with a blue border]\ Ambly- cerus\ schwarzi\ Kingsolver‘70; DZUP\ 130645; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. Paratype deposited in DZUP, 1 male, with labels: Randia mitis\ Sauri Finca\ Ponce, P. R \ Coll. 8 Aug 31 \ R. G. Oakley; Randis mitis\ Flower, 88. 33\ Ponce PR.\ RG Oakley\ S. J. 4515; PARATYPE [label with blue border]\ Amblycerus \ schwarzi\ Kingsolver; DZUP\ 130644; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018; Depository: DZUP.

Additional specimens examined. [1 male specimen]: USA: FLA: Monroe Co.\ N. Big Pine Key\ Wastson’s Hammock\ 29.VIII.95, Manchineel\ nuts, S. Peck, 95-64; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 female specimen]: USA: FLA: Monroe Co.\ N. Big Pine Key\ Wastson’s Hammock\ 29. VIII. 95, Manchineel\ nuts, S. Peck, 95-64; First Record [label with green border]\ North American\ Amblycerus \ schwarzi Kingsolver \ det. JMK 95; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 female specimen]: BAHAMAS: Great Inagua \ South Bay road; blacklight\ trap in Coccothrinax forest\ 10-VII-2007; [same label] colls. Thomas,\ Turnbow & Smith; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 female specimen]: CUBA La Vene-\ ciana, Guanabo\ C. Habana xii.95 \ col. JA. Genaio (?); Emerged from\ Tropical almond\ Terminalia ; Terminalia \ catappa L.; Amblycerus \ schwarzi\ det. Kingsolver\ J. M. Kingsolver; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA). [1 female specimen]: DOMINICAN REPUBLIC:\ Prov. Pedernales,\ Cabo Rojo, Alcoa\ 3-VII-98 R. Woodruff\ & R. Baranowski\ blacklight trap; Amblycerus schwarzi \ Kingsolver, 1970 \ Det.: A. T. Santos; C. S. Ribeiro-Costa, 2018. ( FSCA).

Measurements. BL: 7.8 mm; BW: 4.0 mm.

Diagnosis ( Figs 81 , 94 , 100 ). Amblycerus schwarzi is characterized by the following combination of characters: eyes strongly prominent laterally, closer to each other anteriorly, ocular index: 10.0; pronotum and elytra covered with grayish setae; metepisternum with coarse, conspicuous punctures; hind tibia with lateral spur about 3.0 longer than median spur, tarsomere I about 4.8 times the length of median spur; pygidium with coarse and sparse punctures ( Fig. 81 ); male genitalia, internal sac in the apical region with one pair of subcylindrical sclerites ( Fig. 94 ). Amblycerus schwarzi is very similar externally and in relation to the genitalia to A. dispar , as both have eyes close anteriorly ( Figs 23, 25 ) and median lobe with dorsal valve ( Figs 92, 94 ) subtriangular and internal sac with unpaired “J sclerites. Amblycerus dispar differs from A. schwarzi by the presence of frontal carina (absent in A. schwarzi ), cervical boss with three setae (two setae in A. schwarzi ), metaventrite with median sulcus longer than a half the length of metaventrite (about half the length of metaventrite in A. schwarzi ), ventrite V almost as long as ventrite IV (almost twice as long as the ventrite IV in A. schwarzi ) and internal sac of male genitalia without pair of sclerite in the apical region (one pair in A. schwarzi ).

Distribution ( Fig. 118 ). United States, Virgin Islands, Grand Cayman Island, Bahamas (new country record), Puerto Rico, Cuba, Dominican Republic (new country record), Jamaica, Curaçao and Saint Croix.

Life History. According to Kingsolver (1970), the wide distribution and host diversity of A. schwarzi indicates a high degree of adaptability and probably a high rate of anthropic introduction. One noteworthy fact is that among the genera of plants consumed by A. schwarzi , the seeds of Hippomane and Ricinus are poisonous to warm-blooded animals.

Host Plants ( Tab. I ). Combretaceae : Terminalia catappa L. Euphorbiaceae : Hippomane mancinella L., Ricinus communis L. Verbenaceae : Tectona grandis L. Rubiaceae : Guettarda sp., Randia aculeata var. aculeata .

Figures

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.

FIGURES 91–96. Male genitalia, median lobe, group dispar: 91. Amblycerus crassipunctatus, 92. A. dispar, 93. A. insuturatus, 94. A. schwarzi, 95. A. taeniopygus and 96. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 0.25 mm and 500 ʯm.

FIGURES 97–102. Male genitalia, tegmen, group dispar: 97. Amblycerus crassipunctatus, 98. A. dispar, 99. A. insuturatus, 100. A. schwarzi, 101. A. taeniopygus and 102. Amblycerus goianiensis Santos & Ribeiro-Costa, sp. n. Scale bars = 0.25 mm.

FIGURES 117–118. FIGURE 117. Map with the geographical distribution of A. crassipunctatus and A. dispar. Leaked symbols refer to bibliography data. FIGURE 118. Map with the geographical distribution of A. insuturatus and A. schwarzi. Leaked symbols refer to bibliography data.