Four new genera of Schizopteridae (Hemiptera: Heteroptera) from the Afrotropical and Neotropical regions

Abstract

Despite a recent surge of taxonomic work on the dipsocoromorphan family Schizopteridae, new genus-level taxa remain to be documented and described. The curation of Malaise and Yellow Pan Trap sample residues from Central and South America and Cameroon resulted in the discovery of five undescribed species that based on combined molecular and morphological phylogenetic analyses represent four phylogenetically isolated lineages within non-hypselosomatine Schizopteridae. To accommodate these new species, we here describe the four new genera Caucanannus gen. n. (Colombia, Ecuador, and Brazil) with Caucanannus perplexus sp. n. and Caucanannus novissimis sp. n.; Kamakonocoris gen. n. (Cameroon) with Kamakonocoris carinata sp. n.; Perittonannus gen. n. (Costa Rica) with Perittonannus antiquus sp. n.; and Rimanannus gen. n. (Cameroon) with Rimanannus camerunensis sp. n. The four genera are characterized by distinctive wing venation and male and female genitalic features. We provide habitus photographs and document morphological details using digital macrophotography as well as light compound microscopic and scanning electron microscopic images. Maps and measurements are also included.

Phylogenetic relationships and revised classification of the true bug infraorder Dipsocoromorpha (Insecta: Hemiptera: Heteroptera)

“…Hypselosomatinae are monophyletic in the EW topology (< 50% BS). The traditional subfamily Schizopterinae that we herein refer to as clade A was recovered as monophyletic (ML: 100%; IW: 99%; EW: 100%), but “Ogeriinae” together with several early diverging, recently described genera (Weirauch et al, 2020) were paraphyletic with respect to Schizopterinae in both the ML and IW analyses (Figs 6 and 7), and in addition relative to Hypselosomatinae in the EW analysis (Fig. ).…”

“…A wing organ between the costal margin and dc evolved two times independently, in Ogeria and Caucanannus (see Fig. 5) (Weirauch et al, 2020). 86.…”

Taxonomic review of Kokeshia Miyamoto, 1960 from China, with description of ten new species (Hemiptera: Heteroptera: Schizopteridae)

“…The genus Kokeshia can be recognized among Schizopterinae (including the former ʻOgeriinaeʼ) by the following combination of characters: (a) labium short, four-segmented; (b) tarsal formula 2-2-3; (c) forewing with costal fracture, C+Sc, R+M and R prominently thicker than other veins, medial fracture very short, subcostal cell elongated triangular, trapezoidal cell with five emanating veins, free distal remigial veins usually with a fused apical portion, and terminate before wing margin; (d) male abdominal tergite VII and sternite VII slightly asymmetrical, tergite VIII usually subdivided into two parts, and left hemitergite VIII usually with process; (e) apical portion of phallus sclerotized, tubular and coiled. The venation of forewing is similar to genus Caucanannus Weirauch et al, 2020 andGuapinannus Wygodzinsky, 1951 in welling-developed costal fracture; prominently thick C+Sc, R+M and R; R with only one branch; abdomen of male well sclerotized, and near symmetrical, with well-developed tergites, but it can be distinguished from the latter two genus by M normal, without wing organ or gland; free distal remigial veins usually with a fused apical portion, and terminate before wing margin, instead of reaching to wing margin.…”

Description of a new species of Corixidea from Brazil (Heteroptera: Dipsocoromorpha: Schizopteridae)

“…Despite the remarkable diversity of schizopterid species in the tropical regions, this is one of the least studied groups among Heteroptera. The fauna of schizopterids from Brazil is composed of only 22 species in 13 genera, 11 of which were described in the last four years Knyshov et al, 2016;Almeida et al, 2019aAlmeida et al, ,b, 2020Silveira et al, 2019;Weirauch et al, 2020).…”