Gray-bellied Hawk

Here the details of the Gray-bellied Hawk named bird below:

SCI Name:  Accipiter poliogaster
Protonym:  Falco poliogaster Pl.Col. livr.45 pl.264
Taxonomy:  Accipitriformes / Accipitridae / Accipiter
Taxonomy Code:  gybhaw1
Type Locality:  Brazil. Type from Ypanema, Sao Paulo.
Author:  Temminck
Publish Year:  1824
IUCN Status:  Near Threatened

DEFINITIONS

ACCIPITER
(Accipitridae; Ϯ Eurasian Sparrowhawk A. nisus) L. accipiter, accipitris  hawk  < accipere  to grasp (the original meaning was “to understand” rather than “to seize”) (cf. Med. L. accipiter  Sparrowhawk; ancipiter  Goshawk; "another possible origin is from the Greek aci for 'swift' and pertrum [?πτερον] for 'wing'." (Clark & Davies 2018)); "Accipiter. Genus 8.  ...  Les femelles des Oiseaux de ce genre sont plus grandes que leurs mâles. Elles sont aussi mieux faites, plus fortes & plus courageuses. Pour cette raison on appelle les mâles Tiercelets; parce qu'ils sont d'environ un tiers plus petits que leurs femelles.  ...  **1. L'EPERVIER.  ...  ACCIPITER." (Brisson 1760): based on "Accipiter minor" of Gessner 1555, "Accipiter fringillarius" of Gessner 1555, Schwenckfeld 1603, Jonston 1650-1653, and Charleton 1668, "Nisus" of Willughby 1676, and Sibbald 1684, and numerous other references; "Accipiter Brisson, Orn., 1, 1760, p. 28, 310. Type, by tautonymy, Accipiter Brisson = Falco nisus Linné." (Peters, 1931, I, 205). 
Synon. Aerospiza, Aesalon, Asterias, Astur, Chirospizias, Cooperastur, Daedalion, Dinospizias, Erythrospiza, Eunisus, Eusparvius, Hieraspiza, Ierax, Leptohierax, Leucospiza, Lophospiza, Neonisus, Nisastur, Nisuoides, Nisus, Paraspizias, Phabotypus, Scelospiza, Sparvius, Spilospiza, Tachyspiza, Teraspiza, Urospiza.

poliogaster / poliogastra / poliogastris / poliogastrus
Gr. πολιος polios  grey; γαστηρ gastēr, γαστρος gastros  belly.