Hypoxys quadriden

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 : 405-407

Group H. quadriden s

( Figs. 1–8 A–E; 18 A–L, 19 A–D; 21)

This group of species is by far the largest in Hypoxys and was treated by Breddin (1904a, 1907). His last paper on this group (1907) brings a curious statement: “Subsequent examinations done on abundant material showed that, the number of species placed under the old species name [ Edessa quadridens ] is wide larger than ever suspected, so big, that in the beginning I hardly found the courage to go for the solution of this chaos of close related forms.” More than one hundred years later we still have the same feeling about this group. Even with more than 50 new species in Hypoxys being recognized so far (in preparation), the sensation that the job is far from be done is still very present.

Edessa quadridens is a name used for almost 150 years to identify a large number of species of Hypoxys with stripe of pronotum solid black, ventral surface with narrow, transversal, brown lines, and other characteristics presented below. This group includes: H. quadriden s, H. boerneri , H. claricolor , H. dolosus , H. eburatulus , H. necopinatus , H. offuscatus and H. trabeculus , and a lot of new species that will be described in upcoming works.

Diagnosis. Second antennomere longer than third. Posterior part of the pronotum with a transverse solid black stripe ( Fig. 18A,C,G,I,K ). Anterior part of scutellum with part of the punctures on dark spots ( Fig. 18A ). Connexivum with anterior and posterior black spots on each segment extending ventrally ( Fig. 18A,C,E ). Body ventrally yellow to greenish yellow with dark brown transverse stripes on intersegmental areas and pseudosutures ( Fig. 18B,D,F,H,J,L ).

Head. Apex of mandibular plates concolorous, sometimes with dark spot; lateral margin sometimes with yellow spot. Antennae brown with setae more densely distributed in antennomeres IV and V.

Thorax. Pronotum with punctures black to brown. Scutellum with punctures black or dark brown ( Fig. 18A,C,E,G,I,K ); anterior margin with a yellow stripe; apex not punctured ( Fig. 18A ). Black spot of costal margin reaching between 1/3 and 1/4 of corial extension. Propleura with punctures brown, except in a rounded area adjacent to coxa (proepisternun and proepimeron). Evaporatorium concolorous and slightly whitish ( Fig. 18B ). Metasternal process ( Figs. 1–8E ) with anterior bifurcation receiving fourth and at least half of the third rostral segment.

Abdomen. Dorsal surface brown. Connexivum green with punctures concentrated in two excavated areas separated by median yellow callous ( Fig. 18A ). End of pseudosutures with rounded dark spots ( Fig. 18B ). One trichobothrium in line with spiracles and the other located laterad of this line.

Male ( Figs. 1–8 A–C). Pygophore with distal part of dorsal surface brown. Superior process of genital cup black. Paramere with distal margin black. Proctiger with tufts of setae covering lateral excavations; posterior face laterally expanded usually covering part of the tuft of setae.

Female ( Figs. 1–8D ). Gonocoxites 9 small, narrow, distal margin straight.

Figures

FIGURE 1. H. quadridens. A–C Male, pygophore; A—dorsal view; B–posterior view; C—ventral view. D—Female, genital plates. E—metasternal process; F—Habitus, Lectotype male; G—specimen data. (pyg—pygophore; dr—dorsal rim; vr—ventral rim; proc—proctiger; gp—genital superior process; pa—parameres; gc8—gonocoxite 8; gc9—gonocoxites 9; la8—laterotergite 8; la9—laterotergite 9; x—abdominal segment X. Scale = 1mm).

FIGURE 2. H. boerneri. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 3. H. claricolor. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process; F—Habitus, Lectotype male; G—specimen data (Scale = 1mm).

FIGURE 4. H. dolosus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 5. H. eburatulus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 6. H. necopinatus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 7. H. offuscatus. A–C Male, pygophore; A—dorsal view; B—posterior view; C—ventral view. D—Female, genital plates. E—metasternal process (Scale = 1mm).

FIGURE 8. H. trabeculus. 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).