Chryxus Champion, 1899

Gil-Santana, Helcio R., Leavengood Jr., John M., Berenger, Jean-Michel, Martins, David dos Santos & Oliveira, Jader, 2022, A new species of Chryxus Champion, with taxonomic notes on other species of the genus (Hemiptera, Heteroptera, Reduviidae, Chryxinae), ZooKeys 1104, pp. 159-175 : 159

Chryxus Champion, 1899

Note.

Based on two males from Panama, Champion (1899) created Chryxus to include a new species, C. tomentosus . Because Chryxus travassosi Lent & Wygodzinsky, 1944 was transferred to Wygodzinskyella by Usinger (1952), Chryxus was composed only of its type species and C. bahianus Gil-Santana, Costa & Marques, 2007 ( Gil-Santana et al. 2007).

Redescription.

Total length 3.6-5.2 mm. Integument generally shiny and covered by numerous long and thin setae; membranes of hemelytra glabrous. Head wider than long, strongly curved anteriorly; interocular distance in dorsal view about twice the width of an eye; transverse sulcus shallow; a short anterior sulcus arising from middle of transverse sulcus, even shallower; eyes setose, coarsely faceted, widely separated from each other, globose, subhemispherical in dorsal view; clypeus moderately elevated; antennifers small, close to eyes; first two antennal segments stout; scape slightly curved, thicker (except its thinner base) and shorter than other antennal segments; remaining segments progressively thinner, generally covered by long, thin, numerous setae; on scape sparser and shorter. Labium short, stout, very curved; first two visible segments subcylindrical, subequal in length; the last segment shorter, tapering. Gena ventrally projecting in a short process. Neck well separated from head, relatively thin and short. Thorax. Pronotum: anterior collar narrow, clearly marked, lateral angles slightly or largely prominent; fore lobe subrectangular, hind lobe trapezoidal, both separated by a well-defined transverse sulcus; fore lobe shorter and narrower than hind lobe, convexly raised at disc; a median sulcus running from approximately distal portion or distal margin of fore lobe to about distal two-thirds of hind lobe; humeral angles rounded. Scutellum: basal portion with oblique ridges or wrinkled on central portion; lateral margins elevated, running towards distal process; distal process elongated, variably thickened, and obliquely elevated or not elevated at its apex. Supracoxal lobes of propleura somewhat prominent, those of meso- and metapleura progressively less or not prominent. Legs: fore coxae close to each other, separated by a distance shorter than or subequal to width of fore coxa; middle and hind coxae separated by a distance subequal to or larger than the width of respective coxae. Femora variably thickened; fore tibiae thickened towards apex, with a pad at apex; middle and hind tibiae cylindrical, straight or somewhat curved; tarsi three-segmented. Hemelytra ending short or slightly surpassing posterior margin of abdomen; membrane of hemelytron with only one central cell. Abdomen oval; connexivum moderately narrow. Sternite II finely canaliculated in both sides of middle of posterior margin.

Distribution.

Brazil, French Guiana (new record), Guyana, Panama, Paraguay (new record).