Brachystethus Laporte 1832
Creators: name: Barcellos, Aline
name: Grazia, Jocélia
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Brachystethus

description: Key to the species of <i>Brachystethus</i> 1. Metasternal carina, in profile, strongly elevated anteriorly.....................................................2 Metasternal carina, in profile, flat or little elevated anteriorly................................................ 7 2. Pronotum with a yellowish sub-callous border....................................................................... 3 Pronotum without a yellowish sub-callous border..................................................................5 3. Venter with longitudinal series of yellowish spots. Fourth antennal segment medially swollen............................................................................................................. <i>B. cribrus</i> (Fabricius) Venter uniformly castaneous to dark-castaneous, lacking yellowish spots. Fourth antennal segment cylindrical............................................................................................................ 4 4. Lobes of dorsal rim of pygophore projected, well developed (fig. 22). Posterior borders of gonocoxites 8 sinuate, not projected over laterotergites 8 (fig. 63)............................................................................................................................................... <i>B. improvisus</i> Breddin Lobes of dorsal rim of pygophore scarcely projected (fig. 23). Posterior borders the gonocoxites 8 projected in acute angle, over laterotergites 8 (fig. 64)........................ <i>B. vicinus</i> Signoret 5. Hemelytra with a small yellowish callus, near and entad to apex of radial vein........................................................................................................................................... <i>B</i>. <i>schuhi</i>, sp. nov. Hemelytra without callus........................................................................................................ 6 6. Apex of femora and base of tibiae yellowish.................................................... <i>B. signoreti</i> Stål Legs uniformly castaneous to black.................................................. <i>B. rubromaculatus</i> Dallas 7. Ostiolar rugae short, extending for 1/3 the distance between inner margin ostiolum and lateral margin of metapleura. Metasternum carina with a medial, transversal sulcus................... 8 Ostiolar rugae long, extending for 2/3 of distance between inner margin of ostiolum and lateral margin of metapleura. Metasternal carina lacking sulcus.................................................... 9 8. Dorsal surface black, with red spots on hemelytra, in variable extension (fig.8).......................................................................................................................................... <i>B. tricolor</i> Bolívar Dorsal surface black, with yellow spots on hemelytra, in variable extension (fig. 9)................................................................................................................................. <i>B. vexillum</i> Breddin 9. Coxae, trochanters, base and apex of femora, base of tibiae and tarsi yellowish.......................................................................................................................................... <i>B. coxalis</i> Breddin Legs uniformly castaneous to dark-castaneous.................................. <i>B. geniculatus</i> (Fabricius)
description: Published as part of <i>Barcellos, Aline &amp; Grazia, Jocélia, 2003, Revision Of Brachystethus (Heteroptera, Pentatomidae, Edessinae), pp. 413-446 in Iheringia, Sér. Zool. 93 (4)</i> on page 417, DOI: 10.1590/S0073-47212003000400008, http://zenodo.org/record/3719467