New species of the Hypoxys triangularis group and the first contribution on the morphology of the internal genitalia of Hypoxys Amyot & Serville, 1843 (Hemiptera: Pentatomidae: Edessinae) Author Cunha, Eduardo Victor De Paiva 0000-0002-2386-6734 Universidade Federal do Pará, Instituto de Ciências Biológicas, Av. Augusto Correa # 1, Belém, Pará, Brazil 66075 - 110. & eduardovdpc @ gmail. com; https: // orcid. org / 0000 - 0002 - 2386 - 6734 eduardovdpc@gmail.com Author Fernandes, José Antônio Marin 0000-0001-7450-5296 Universidade Federal do Pará, Instituto de Ciências Biológicas, Av. Augusto Correa # 1, Belém, Pará, Brazil 66075 - 110. & joseamf @ ufpa. br; https: // orcid. org / 0000 - 0001 - 7450 - 5296 joseamf@ufpa.br text Zootaxa 2022 2022-07-26 5168 5 501 520 journal article 107002 10.11646/zootaxa.5168.5.1 b0039631-f341-4018-b9b6-657063012307 1175-5326 6911501 121EA9DC-F17B-46FD-8987-F879BC6DAA99 Hypoxys striatus sp. n. (Figures: 2, 8F, 9F, 10C–D, 12) Etymology. The specific epithet refers to the paramere posterior face striated. Holotype . BRAZIL . Pará : 1 ♂ Óbidos, VIII.1978 , A. C. Domingos Coll. ( MNRJ ). Paratypes (n=3). BRAZIL . Pará : 1 ♀ Óbidos , XII.1963 , Dirings Coll. ( MZUSP ) ; 1 ♀ e 1 ♂ Santarém, VI .1919, S. M. Klages Coll. ( CMNH ) . Measurements. Total length 14.3–14.8; total width 7.7–8.0; head length 1.4–1.5; head width 3.2–3,4; interocular distance: 1.6–1.8; length of antenomeres I: 0.9–1.0; II: 1.0–1.1; III: 1.5; IV: 3.1–3.2; V: 3.6; pronotum length 2.7– 3.0; pronotum width 8.9–9.2; scutellum length 6.5–6.7; scutellum width 5.0–5.3. Diagnose. Antennomeres with increasing lengths progressively (I<II<III<IV<V). Anterolateral margin of pronotum not punctured ( Fig. 10C ). Corium reddish brown ( Fig. 10C ). Metasternal process with arms of anterior bifurcation receiving 2/3 of third rostral segment ( Fig. 10D ). Pseudosutures of abdomen with adjacent dark green spot ( Fig. 10D ). Male genitalia. Dorsal surface with spot restricted to coarse area of the pygophore ( Fig. 2A ). Dorsal rim sinuous ( Fig. 2A ); lateral expansions slightly globose and almost level with posterolateral angles ( Fig. 2C ). Superior process of the genital cup subtriangular, small and swollen ( Fig. 2B ). Paramere with head slightly concave; anterior and posterior lobe subtriangular; anterior lobe large with external face striated and reaching superior process of the genital cup; posterior lobe smaller than the anterior lobe and laterally directed ( Fig. 2D ). Proctiger shallowly excavated laterally, excavation covered by long and dense setae; posterior face elliptical ( Fig. 2B ). Inner wall with small swollen area contiguous to posterolateral angles ( Fig. 8F , black arrow). Ventral rim in widely opened V-shaped with expansions hardly visible ( Fig. 2C ). Female genitalia ( Fig. 2E ). Valvifers VIII with distal margin slightly arched; outer and inner angles of the posterior margin rounded; mediolateral crest slightly swollen ( Fig. 9F , black arrow); mesial borders with excavation narrow, deep and U-shaped. Valvulae IX clearly exposed. Distribution ( Fig. 12 ). BRAZIL : Pará. Comments. The superior process of the genital cup of H. triangularis and H. striatus sp. n. are the smallest processes in the group, but in H. triangularis it is rounded and concave and in H. striatus sp. n. it is subtriangular and swollen. This species is the only one with expansions of the ventral rim hardly visible. The mesial borders of the valvifers VIII of H. curvatus sp. n. , H. capito and H. subrastratus have the excavation forming a “U”. However, H. striatus sp. n. can be separated from the other two species by the more deeply excavated mesial borders.