Cuyabasa gastrophysoides Bechyné, 1959 (Figure 2) Cuyabasa gastrophysoides Bechyné 1959:347 (Paraguay, holotype female). Measurements. LB = 4.96 mm; WB = 3.05 mm (N=1) Distribution. Paraguay. Type examined. Holotype female: Paraguay C. Höge, Type Cuyabasa gastrophysoides ns. J. Bechyne det., 1956 (NMB). Literature records. PARAGUAY: (C. Höge, Mus. G. Frey) (Bechyné 1959). Description of genitalia. Spermathecal pump (Figure 2E) arched, rounded, about two-thirds as long as receptacle. Apex flattened, evenly rounded, short, about one-fourth length of pump in lateral view. Receptacle cup-shaped, with maximum width situated near spermathecal pump, forming a collar, making 90˚ angle with pump. Canal attached slightly above base of receptacle. Male genitalia not available for study. Diagnosis. Cuyabasa gastrophysoides differs from C. minor by the red or dark red coloration of the head, ventral side, scutellum and appendages (Figure 2), and by the frontal ridge that reaches the antennal sockets (Figure 2C). Cuyabasa gastrophysoides can be separated from C. chiquitoensis by the pronotal punctation that is as apparent as that of the elytra (Figure 2A); by the rugose antennal calli; and by the deeply punctate orbital sulcus. Since only one male of C. chiquitoensis and one female of C. gastrophysoides are known to date, genitalia of these species could not be compared.

Published as part of Roie, Martijn Van, D'Hont, Anouk, Konstantinov, Alexander & Furth, David, 2023, Types of Cuyabasa Bechyné, Palmaraltica Bechyné and Rhynchasphaera Bechyné (Coleoptera: Chrysomelidae: Galerucinae: Alticini: Oedionychina) of the Naturhistorisches Museum, Basel, with keys to species and descriptions of genitalia, and new combinations for species transferred to the oedionychine, pp. 67-82 in Zootaxa 5318 (1) on page 70, DOI: 10.11646/zootaxa.5318.1.3, http://zenodo.org/record/8158253