Hypoxys gaucho, Mendonca & Nunes & Fernandes, 2021

Mendonca, Maria Thayane S., Nunes, Benedito M. & Fernandes, Jose Antonio M., 2021, Description of fifteen new species of the Hypoxys balteatus species group (Hemiptera: Heteroptera: Pentatomidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 289-318 : 305

Hypoxys gaucho sp. nov.

( Figs 3C–D , 13A–E , 21B )

Material examined. Hඈඅඈඍඒඉൾ: J, BRAZIL: Rංඈ Gඋൺඇൽൾ ൽඈ Sඎඅ: Derrubadas / 19.iv.2004 / Bernardes JLC ( MZUSP).

Diagnosis. Antennae brown. Antennomere II longer than III. Pronotum with smoky stripe reaching posterior margin. Thoracic and abdominal pleurites and sternites with black spots ( Fig. 3D ). Anterior excavation of metasternal process harboring fourth and almost whole third rostral segment ( Fig. 13E ). Male genitalia. Pygophore ( Figs 13A–D ). Posterolateral angles developed, bent inwards, acuminate ( Fig. 13A ). Superior process of genital cup large, concave, parallel to dorsal rim, and almost reaching posterolateral angle, ventral margin thick and carinate, inner part medially notched, inner dorsal angle produced in long digitiform process ( Figs 13C,D ). Paramere with two lobes; anterior lobe square, large, and directed to base of proctiger; lateral lobe rounded ( Figs 13C,D ). Proctiger with dense crown of long setae on lateral excavations; posterior face subpentagonal and short ( Figs 13C,D ). Ventral rim with expansions long, acuminate, ventrolateral side broadly excavated and medially furrowed, dorsal side with light brown spot; surpassing level of posterolateral angles ( Fig. 13B ). Female genitalia. Unknown. Measurements (n = 1; mm). Total length 15.0; head length 1.6; head width 3.2; pronotum width 9.4; abdomen width 7.5; length of antennomeres: I – 0.8; II – 1.7; III – 1.1; IV: missing; V: missing; scutellum length 6.7; scutellum width 5.4; pronotum length 2.7.

Differential diagnosis. See differential diagnosis of H. favachae sp. nov. Additionally, H. gaucho sp. nov. shares with H. aspilogaster sp. nov. the expansions of ventral rim long and narrow but both species can be separated by the shape of the superior process of genital cup and the posterior face of proctiger.

Etymology. Named after the people born in Rio Grande do Sul State, Brazil. The name Gaucho is also used for the “cowboys” that traditionally inhabit the prairies (Pampa Biome) in Brazil (Rio Grande do Sul), Uruguay and Argentina. Noun in apposition.

Distribution ( Fig. 21B ). Brazil: Rio Grande do Sul.

Figures

Figs 3A–F. Dorsal and ventral surface. A–B – Hypoxys favachae sp. nov.; C–D – Hypoxys gaucho sp. nov.; E–F – Hypoxys hyalinofasciatus sp. nov. Scale bars = 5 mm.

Figs 13A–E. Hypoxys gaucho sp. nov. A–D – pygophore in dorsal, ventral, posterior and posterolateral view, respectively; E – metasternal process. Scale bars = 1 mm.

Figs 21A–B. Occurrence maps of the sixteen new species of the Hypoxys balteatus species group.