Hypoxys stysi, 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 : 312-317

Hypoxys stysi sp. nov.

( Figs 5C–D , 19A–F , 21A )

Material examined. Hඈඅඈඍඒඉൾ:J, SURINAME: Cඈඋඈඇංൾ: Suriname exp 1948-1949 / Coronieweg 216 / zandzitsen / 18.xii.1948 ( RMNH). Pൺඋൺඍඒඉൾඌ: SURINAME: Sංඉൺඅංඐංඇං: ♀, Grandam / 15.vii.1965 // Mees GF / E. quadridens F. ( Hypoxys ) // ( RMNH). FRENCH GUIANA: Cൺඒൾඇඇൾ: ♀, E. quadridens Fabr. ( MNHN).

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. 5D ). Anterior excavation of metasternal process harboring fourth and almost whole third rostral segment ( Fig. 19F ). Male genitalia. Pygophore ( Figs 19A–D ). Dorsal rim with small round projections adjacent to posterolateral angle ( Fig. 19A ). Posterolateral angles developed, bent inwards, acuminate ( Fig. 19A ). Superior process of genital cup trilobate, curved, elongated, concave medially, parallel to dorsal rim and almost reaching apex of posterolateral angle; inner part bifid, forming two long digitiform lobes; outer part tongue-like ( Figs 19C,D ). Paramere with two lobes; anterior lobe square, developed and directed to dorsal rim; lateral lobe small and rounded ( Figs 19C,D ). Proctiger with crown of long, dense setae on lateral excavation; posterior face subpentagonal ( Figs 19C,D ). Ventral rim with expansions acuminate, large, ventrolateral side broadly excavated, dorsal side without brown spot; almost level with posterolateral angles ( Figs 19B,C ). Female genitalia. Genital plates ( Fig. 19E ). Valvifers 8 posterior margin with posterolateral angles dentiform and posteriorly directed, inner angle dentiform and projected to valvifers 9; imaginary line tangent to posterolateral angles not reaching distal margin of valvifers 9; inner margin slightly projected posteriorly, leaving bottom of excavation convex; excavation in U-shaped. Valvulae 8 not visible. Apices of laterotergites 8 clearly above level of apices of abdominal segment VII. Laterotergites 9 slightly surpassing band connecting laterotergites 8; apices clearly below imaginary line tangent to apices of abdominal segment VII.

Measurements (n = 3; mm). Total length 15.3–18.1; head length 1.3–2.2; head width 3.1–3.5; pronotum width 9.9–11.4; abdomen width 7.7–9.0; length of antennomeres: I – 0.9–0.9 (no span); II – 1.5–1.7; III – 1.0–1.4; IV – 3.7–3.8; V – missing; scutellum length 7.2–8.1; scutellum width 5.3–6.4; pronotum length 3.0–3.4.

Differential diagnosis. For the female genitalia see differential diagnosis of H. amyoti sp. nov.; for the males see differential diagnosis of H. amyoti sp. nov.

Etymology. Named after the Czech entomologist Pavel Štys (1933–2018). Pavel was an eminent specialist in morphology and taxonomy of Heteroptera and a great person. Distribution ( Fig. 21A ). Suriname: Coronie, Sipaliwini; French Guiana: Cayenne.

Figures

Figs 5A–F.Dorsal and ventral surface.A–B – Hypoxys servillei sp. nov.; C–D – Hypoxys stysi sp. nov.; E–F – Hypoxys venustus sp. nov. Scale bars = 5 mm.

Figs 19A–F. Hypoxys stysi sp. nov.A–D – pygophore in dorsal, ventral, posterior and posterolateral view, respectively; E – genital plates; F – metasternal process. Arrow indicates expansion of the ventral rim with a lateral excavation. Scale bars = 1 mm.

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