Cantheconidea Schouteden, 1907

Brugnera, Ricardo, Grazia, Jocelia, Maynard, Andrew & Roca-Cusachs, Marcos, 2024, Delimiting Cantheconidea Schouteden 1907, with the description of a new genus (Heteroptera: Pentatomidae: Asopinae), European Journal of Taxonomy 947, pp. 191-215 : 193-195

Genus Cantheconidea Schouteden, 1907

Cantheconidea Schouteden, 1907: 44 .

Cantheconidea – Thomas 1994: 168 .

Type species

Canthecona javana Dallas, 1851 .

Diagnosis

Anterolateral margins of pronotum pale, crenulated, and sinuous. Anterior angle of pronotum produced. Humeral angles acute and laterally produced. Posterior half of metafemur distinctly darker. Peritreme disc-type, slightly curved anteriorly; metapleural evaporatorium surrounding the peritreme (except in posterior margin), not reaching the lateral margin of pleura; mesopleural evaporatorium reaching lateral margin of pleura. Presence of a pair of metasternal processes holding the apex of labium. Abdominal tubercle short, not reaching the metacoxae. Valvifers 8 as long as wide, left valvifer 8 usually overlapping right valvifer. Internal female genitalia with capsula seminalis ellipsoid, as long as pars intermedialis; inner duct slightly longer and thinner than pars intermedialis; outer duct about 2 × as long as vesicular area; ring sclerites absent; 1+1 secondary thickenings of vaginal intima elongated. Anterior opening of pygophore triangular; dorsal rim concave, with 1 +1 projections; superior layer of ventral rim rectilinear in ventral view, with convexity medially; inferior layer of ventral rim slightly projected; head of paramere half-moon shape, with acute apex, and small projection in lateral view; pseudoclasper reniform, with stried dorsal sculptures. Phallus with thecal shield more than 2 × as long and as wide as basal theca; presence of acute conjunctival processes; vesica grooved medially.

Redescription

COLORATION. Body elongated; brown or dark brown dorsally, frequently with green and purple iridescence; ventrally brown or dark brown, with yellow and unpunctured macula, mainly in thorax; legs pale yellow, except posterior half of the femur, which is usually dark brown and iridescent, especially metafemur.

HEAD. Rectangular; as long as wide or slightly longer than wide; clypeus and mandibular plates subequal. Labium slightly surpasses metacoxae. Antennae five-segmented and pale yellow.

THORAX. Anterolateral angles of pronotum produced; anterolateral margins of pronotum sinuous, serrated, and paler than disc; humeral angles produced and acute, generally with posterior tooth. Basal angles of scutellum foveate, with diameter similar to ocelli; frenal portion of scutellum longer than postfrenal portion, apex of scutellum pale yellow or concolorous, reaching posterior half of fifth segment of abdomen. Peritreme disc-type, slightly curved anteriorly; metapleural evaporatorium surrounding peritreme, not reaching lateral margin of pleura; mesopleural evaporatorium reaching lateral margin of pleura. Metasternum strongly laterally elevated with labium lying between these processes. Presence of profemoral spine.

ABDOMEN. Apex of connexival segments acute and projected posteriorly. Abdominal tubercle short, not reaching metacoxae.

FEMALE GENITALIA. Valvifers 8 as long as wide, left valvifer 8 usually overlapping right valvifer, posterior margins rectilinear; valvifer 9 rectangular; laterotergites 9 longer than wide, rounded apically, aligned with segment X. Internal female genitalia with capsula seminalis ellipsoid, as long as pars intermedialis; distal annular crest laterally projected, placed slightly before base of capsula seminalis; inner duct slightly longer and thinner than pars intermedialis; outer duct about 2 × as long as vesicular area; ring sclerites absent; 1+1 secondary thickenings of vaginal intima elongated.

MALE GENITALIA. Pygophore cuplike; anterior opening triangular; dorsal rim concave, with 1 +1 projections; superior layer of ventral rim rectilinear in ventral view, with convexity medially; inferior layer of ventral rim slightly projected; head of paramere half-moon shape, with acute apex, and small projection in lateral view; pseudoclasper reniform, with stried dorsal sculptures. Phallus with thecal shield distinctly longer and wider than basal theca; presence of sclerotized and acute conjunctival processes; vesica grooved medially.

Remarks

A pair of metasternal processes which the labium lies between is one of the diagnostic features for the genus. However, a similar condition is also found in Ealda Walker, 1867 , Parealda Schouteden, 1907 , Montrouzierellus Kirkaldy, 1908 , Australojalla Thomas, 1994 and Cantheconesia Brugnera & Roca-Cusachs gen. nov. Currently, Cantheconidea are recognized by a combination of characters, including: armed profemora, crenulate anterolateral pronotal margin, lateral metasternal margins raised, produced humeri, basal abdominal spine present.