Belostoma orbiculatum Estévez & Polhemus, 2001

Ribeiro, Josė Ricardo Inacio, 2007, A review of the species of Belostoma Latreille, 1807 (Hemiptera: Heteroptera: Belostomatidae) from the four southeastern Brazilian states, Zootaxa 1477 (1), pp. 1-70 : 31-32

Belostoma orbiculatum Estévez & Polhemus, 2001

Belostoma orbiculatum Estévez & Polhemus, 2001: 154 , ( Figs 8–10 ; 24 –27).

Remarks. I have not seen specimens of this species. Types.—According to Estévez and Polhemus (2001: 155), the description of B. orbiculatum was based on a male holotype and a female paratype [locality not mentioned] deposited in SEMC, seven paratypes (Tigre, Buenos Aires Province, Argentina), and one paratype ([?], Buenos Aires Province, Argentina) deposited in USNM.

Description.—According to Estévez and Polhemus (2001: 154): “Size: length, male 13.4–14.6, female 13.55–14,7; width, male 6.7–7.5, male 6.7–7.6. Color: almost uniformly brown. Shape: elliptical. Head: suture anteclypeus-maxilary plate as long as suture anteclypeus-lorum; maxillary plate not compressed; anteoculus shorter than interoculus; eyes globose, as wide as long; segment I of the beak slightly shorter than II. Thorax: prosternal keel prominent, rounded. Abdomen: pilosity slightly developed on penultimate segment. Male genitalia: arms of phallobase covering lateral margins of ventral diverticulum.”

Distribution.—According to Estévez and Polhemus (2001: 155): ARGENTINA: Buenos Aires. BRAZIL: Rio de Janeiro, Santa Catarina. URUGUAY: Cerro Largo.

Figures

FIGURE 8. Belostoma foveolatum (Mayr, 1863). 8A–B, Prosternal keel (lateral view): 8A, Specimen from State of São Paulo (MACN 39316). 8B, Specimen from State of São Paulo (MNRJ 85). 8C–H, Phallus: 8C–E, Specimen from State of Minas Gerais (DPIC 461). 8F–H, Specimen from State of São Paulo (MNRJ 85). 8C and 8F, Dorsal views. 8D and 8G, Ventral views. 8E and 8H, Lateral views. Scale bar: 1.00 mm.

FIGURE 9. Belostoma dilatatum (Dufour, 1863). 9A–C, Prosternal keel (lateral view): 9A, Specimen from State of Paraíba (INPA 0020868). 9B, Specimen from State of São Paulo (MZSP). 9C, Specimen from State of Mato Grosso do Sul (DZRJ 1). 9D–I, Phallus: 9D–F, Specimen from Corrientes, Argentina (DPIC 208). 9G–I, Specimen from State of Mato Grosso do Sul (DZRJ 1). 9D and 9G, Dorsal views. 9E and 9H, Ventral views. 9F and 9I, Lateral views. Scale bar: 1.00 mm. (HEF) heart-like figure.

FIGURE 10. Belostoma discretum Montandon, 1903 and B. noualhieri Montandon, 1899. B. discretum. 10A, Prosternal keel (lateral view): specimen from State of Amazonas (SEMC). 10B–G, Phallus: 10B–D, Specimen from State of Amazonas (SEMC). 10E–G, Specimen from Corrientes, Argentina (MACN). B. noualhieri. Prosternal keel (lateral view): specimen from State of Rio Grande do Sul (MNHN). 10B and 10E, Dorsal views. 10C and 10F, Ventral views. 10D and 10G, Lateral views. Scale: 1.00 mm.

FIGURE 24. Geographic distribution map of Belostoma species in southeastern Brazil. 24A, = B. foveolatum, = B. horvathi. 24B, = B. plebejum, = B. ribeiroi, = B. sanctulum.