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

Group H. oxyacanthus

( Figs. 12–16 A–E; 19 K–L, 20 A–H; 23)

Diagnosis. Pronotum and scutellum with brown punctures of the same size, uniformly distributed, and never on dark spots ( Figs. 19K , 20A, C, E, G ). Spots on pronotum usually restricted to narrow, short, transverse spots close to each humeral angle, these spots can become incomplete stripes, or complete smoky brown stripes in H. oxyacanthus ( Fig. 19K ), or complete solid black stripes in H. infulatus ( Fig. 20C ). Connexivum without large black spots that extend ventrally as in H. quadriden s group ( Fig. 18A ); usually green with yellow median spot; green part can turn brown or yellow in specimens not well preserved. Body lighter ventrally than dorsally, transversally striped in green and yellow, sometimes green stripes turn light brown (maybe a preservation problem) ( Fig. 20B,D,F ). Metasternal process with anterior arms more tumid than in H. quadriden s group species. Pygophore with superior process of genital cup subtriangular, deeply excavated black, close to proctiger, and a little further from dorsal rim than in H. quadriden s group. Margin of diaphragm, at base of proctiger, with row of setae. Paramere with head pyramidal; shaft with carina on inner side that splits distally in an arch uniting anterior and posterior apex ( Fig. 12B ); anterior lobe somewhat elongated and rounded; posterior lobe laterally directed. Ventral rim central excavation shallowly excavated; expansions surpassing level of posterolateral angles in ventral view ( Figs. 12–16C ). Females with genital plates very similar and are hard to separate, except H. infulatus ( Fig. 14D ). Gonocoxites 8 typically with posterior margin straight or slightly sinuous and slanting; and sutural border divergent on distal half; inner angle rounded and overlapping base of gonocoxites 9.

Head. Mandibular plates with apex concolorous; lateral margin without spot. Antennae yellow to brown with setae more densely distributed on antennomeres IV and V; second antennomere longer than third ( Figs. 19K , 20A,C,E,G ).

Thorax. Apex of humeral angle with margin black and slightly curved posteriorly ( Fig. 20C ). Cicatrices with concolorous punctures delimiting anterior sulci. Scutellum with apex not punctured. Black spot of costal margin reaching approximately 1/4 of corial margin. Propleura with a green stripe on anterolateral margin; punctures concolorous or brown. Evaporatorium rugulose, concolorous to whitish ( Fig. 20B ). Metasternal process ( Fig. 19F ) with anterior bifurcation receiving fourth and half of the third rostral segment.

Abdomen. Connexivum with punctures concentrated in two excavated areas separated by median yellow callous ( Fig. 20A, C, E, G ). One trichobothrium positioned in line with spiracles and the other located laterad of this line.

The group H. oxyacanthus is composed of Hypoxys oxyacanthus , H. brachyacanthus , H. infulatus , H. leptacanthus , H. tragelaphus , and a few new species.

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 13. H. brachyacanthus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—metasternal process (Scale = 1mm).

FIGURE 14. H. infulatus. 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 18. Dorsal and ventral view. H. quadridens A–B; H. boerneri C–D; H. claricolor E–F; H. dolosus G–H; H. eburatulus I–J; H. necopinatus K–L (Scale = 5mm).

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).