Hypoxys oxyacanthus (Breddin, 1904) Nunes & Campos & Mendonca & Cunha & Fernandes, 2020

Nunes, Benedito Mendes, Campos, Lourival Dias, Mendonca, Maria Thayane Da Silva, Cunha, Eduardo Victor De Paiva & Fernandes, Jose Antonio Marin, 2020, Revision of Hypoxys Amyot & Serville, 1843 stat. rest. (Heteroptera Pentatomidae), Zootaxa 4742 (3), pp. 401-441 : 425-427

Hypoxys oxyacanthus (Breddin, 1904) comb. nov.

( Figs. 12 A–E; 19 K–L; 23)

Edessa oxyacantha Breddin, 1904a: 138 ; Breddin, 1904b: 50; Bergroth, 1908: 179; Kirkaldy, 1909: 161 (catalog)

Edessa orba Breddin, 1907: 341 ; Kirkaldy, 1909: 368 (catalog) syn. nov.

Lectotype male. Edessa oxyacantha . Peru, Amazonas , [river] Vilcanota ( SDEI). Designated by Gaedike (1971: 94). Examined . Lectotype female. Edessa orba . Paraguay ( SDEI). Examined. Here designated .

Material examined. FRENCH GUIANA. Cayenne: ♂ Entomotech Lodge, 30 km SE Roura on Kaw Rd., 17–XI– 2004, N04º33.570’ W052º12.433’, 300m MV Light, F. Goubert, Coll. ( JEE); SURINAME. Sipaliwini: Kabalebo km 39, sample 175, 31–X–1981, J. Huybregts ( RMNH); BRAZIL. Maranhão: ♀ Bom Jardim REBIO–Res. Biol. Gurupi, 02–11–IX–2010, coleta icidental, F. Limeira-de-Oliveira, J. C. Silva, & D. W. A. Marques ( UEMA); Pará: ♀ ♂ MPEG, Campus de pesquisa, IX–2011, Carvalho, F. ( UFRG); ♀ Belém, campus MPEG, Mata secundária, co- leta manual, 05–12–2011, F. S. Carvalho–Filho ( UFRG); ♀ Óbidos, Set–1963, Dirings ( MZUSP); 2♀ Itaituba (Rio Tapajós), Nov–1962, Dirings ( MZUSP); ♂ Santarém, IV–17–1930, C. H. Townsend ( USNM); ♂ Melgaço, Flona Caxiuanã, XI–2003, coleta manual noturna sob luz branca, Fernandes, J.A.M. ( UFRG); Amazonas: 2♀ Manaus 21–XII–55, Elias & Roppa col. ( MNRJ); ♀ Tucano, 24–4–1964, 1500m, J. & B., Bechyne ( IZAV); ♀ B. Constant, V–58, J. C. M. Carvalho col. ( MNRJ); Rondônia: ♀ 62 km SW Ariquemes, nr Fzda. Rancho Grande 5–17–X–1993, JE Eger & LB & CW O’Brien ( JEE); same data: ♂ 8–20–XI–1994 ( JEE); ♀ 4–16–XI–1997, JE Eger. ( JEE); Goiás: ♀ Campinas. Fev–2–1936, Spitz Col. ( MZUSP); Mato Grosso: ♀ Intersecção da BR 163 e o rio Peixoto de Aze- vedo, X–1978, O. Roppa leg. ( UFRG); ♀ Tapinagés, Araguaya, Carvalho ( MNRJ); S ão Paulo: ♀ Caraguatatuba, Res. Flor. 40m, 2–IV–962, Martins Reichardt e Silva ( MZUSP); COLOMBIA. Meta: ♀ 3 mi. W. Villavicencio, 920m., III–11–1955, E. I. Schlinger & E. S. Ross collectors ( CAS); ECUADOR. Napo: ♀ Vic. Puerto Misahualli, 1650–1900 ft, 6–19–IX–1998, J. E. Eger coll. ( JEE); PERU. Cusco: ♀ Convencion, 21–VIII–69, F. Carrasco Z. ( UFRG); ♀ Coll. Ructow ( ZSM); BOLIVIA. Santa Cruz: ♀ 5 km SSE Buena Vista, Hotel Flora & Fauna, 440m, 10–22–X–2004, W 63º39.128’ S 17º29.925’, J. E. Eger ( JEE); Cochabamba: ♀ Region Chaparé, 400mtr, 15–XII– 1949, Dirings ( MZUSP); same data: ♀ 5–X–1950 ( MZUSP); ♂ Dez–1950 ( MZUSP); ♂ Chaparé, Palmar, 1000m, 1986, Frenz Steinbach, coll ( USMN); La Paz: 2♂ Prov. Sud Yungas, Puente Villa 4300, 19–24–V–1989, J. E. Eger Coll., Edessa oxyacantha Breddin, 1904 Comp. w. TYPE Fernandes, JAM 1999 ( JEE); 2♀ Yunges de La Paz, 1000 m, from Rolle, EPVanDuzee collection, Edessa oxyacantha Breddin, 1904 Fernandes, J. A. M. 1999 Comp. SYN- TYPE. Edessa orba Breddin, 1907 Comp. w. TYPE Fernandes, JAM 1999 ( CAS); PARAGUAY. San Pedro: 2♀ Liberacio, 3–I–94, B. Garcete ( MEL); Cordillera: ♂ Inst. Agr. Nac. Caaoupe, 9–I–1981, R. D. Cave coll ( USMN); ARGENTINA. Misiones: ♂ El Dorado, 15–IX–1967 ( UFRG).

Measurements. total length: 14.8–19.8; head length: 2.0–3.1; head width: 2.9–3.8; pronotal width: 9.1–13.7; abdominal width: 7.8–10.9; length of antennal segments. I: 0.8–1.1; II: 1.6–2.3; III: 1.1–1.6; IV: 3.6–5.3; V: 3.8–5.9; interocular distance: 1.4–1.8; scutellum length: 6.9–9.1; scutellum width: 4.9–6.9; pronotal length: 3.2–4.2.

Diagnosis. Anterolateral margin of pronotum with incomplete solid black stripe ( Fig. 19K ). Dark marks on posterior part of pronotum ( Fig. 19K ) varying from small, elongated, lateral black spots (including posterolateral angles), to an incomplete or complete stripe; stripe usually smoky brown, rarely solid black. Connexivum uniformly green or with small median yellow spots, sometimes also brown spots on excavated areas. Anterolateral margin of pronotum punctured. Anterior margin of scutellum concolorous ( Fig. 19K ). Dorsal surface of abdomen brown. Ventrally apex of pseudosutures with or without rounded dark spots ( Fig. 19L ). Male ( Fig. 12 A–C). Pygophore with dorsal rim shallowly excavated, central part straight; lateral strongly projected posteriorly, surpassing posterolateral angles and expansions of ventral rim ( Fig. 12A,B ). Paramere with anterior lobe triangular, long, reaching base of proctiger; posterior lobe slightly developed and acuminate ( Fig. 12B ). Proctiger with widely separated tufts of dense setae dorsally; posterior face rounded and flat ( Fig. 12B ). Ventral rim with expansions well developed, barely tumid, and acuminated ( Fig. 12C ). Female ( Fig. 12D ). Gonocoxites 8 inner angle reaching base of gonocoxites 9. Laterotergites 9 narrow, clearly surpassing sclerite uniting laterotergites 8.

Comments. This species has a curious history. The complement of the description was published ahead of the original description of the species ( Breddin 1904a, 1904b, 14 June and 1 July, respectively). Breddin (1904b) compared E. oxyacantha to E. nigrispina and E. melacantha ; and Breddin (1904a) compared E. oxyacantha to E. pachyacantha . Hypoxys oxyacanthus can be differentiated from E. nigrispina and E. melacantha by the humeral angles shorter and laterally directed (longer and curved backwards in E. nigrispina and E. melacantha ), and corium variegated (unicolorous in E. nigrispina and E. melacantha ). Here, the specie E. pachyacantha is considered a junior synonym of H. tragelaphus . Hypoxys oxyacanthus can be separated from H. tragelaphus by the humeral angles longer and rounded in H. tragelaphus ( Fig. 19K and 20G ). Moreover, males of H. tragelaphus presents projections of parameres more developed than H. oxyacanthus ( Fig. 16B and 12B ). Hypoxys oxyacanthus is closely related to H. leptacanthus and H. tragelaphus by sharing a projection of the dorsal rim that extends beyond posterolateral angles ( Figs. 12A , 15A , 16A ). This species shows a strong variation among specimens in characters usually not variable, but male and female genitalia do not support the split of the species. A future molecular analysis may help to elucidate if Hypoxys oxyacanthus is a complex of species or only a species with strong variation in a few characters.

Distribution ( Fig. 23 ). FRENCH GUIANA: Cayenne; SURINAME: Sipaliwini; BRAZIL: Maranhão, Pará, Amazonas, Rondônia, Goiás, Mato Grosso, São Paulo; COLOMBIA: Meta; ECUADOR: Napo; PERU: Cusco; BOLIVIA: Santa Cruz, Cochabamba, La Paz; PARAGUAY: San Pedro, Cordillera; ARGENTINA: Misiones.

Figures

FIGURE 12. H. oxyacanthus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 15. H. leptacanthus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 16. H. tragelaphus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 19. Dorsal and ventral view. H. offuscatus A–B; H. trabeculus C–D; H. triangularis E–F; H. capito G–H; H. subrastratus I–J; H. oxyacanthus K–L (Scale = 5mm).

FIGURE 20. Dorsal and ventral view. H. brachyacanthus A–B; H. infulatus C–D; H. leptacanthus E–F; H. tragelaphus G–H (Scale = 5mm).

FIGURE 23. Distributional map of the species of H. oxyacanthus group.