Chryxus Champion 1898

Zenodo (CERN European Organization for Nuclear Research)

Abstract

KEY TO GENERA AND SPECIES OF CHRYXUS GROUP MODIFIED FROM GIL-SANTANA ET AL. (2022) 1. Body length 8.0-9.0 mm; veins on corium of hemelytron indistinct; abdominal connexivum unicolored [Wygodzinskyella Usinger, 1952] .................................................................................................................. 2 — Body length 3.1-5.3 mm; veins on corium of hemelytron distinct, at least basally; abdominal connexivum bicolored ........................................................................................................................................................ 3 2. Pronotum with red anterior lobe and black posterior lobe; femora orangish to reddish brown, with apices blackish brown; tibiae uniformly blackish brown; paramere with large, rhomboid, lamelliform process at middle of inner surface ......................................................................................... W. gilsantanai Chen, Li & Cai, n. sp. — Pronotum orangish brown, with disc of posterior lobe dark brown; legs blackish brown, with apices of femora and bases of tibiae orangish brown; paramere with small, triangular, apically acute process at middle of inner surface ........................................................................................... W. travassosi (Lent & Wygodzinsky, 1944) 3. Head with process on frons [Petasolentia Weirauch, 2012] ................................. P. goellnerae Weirauch, 2012 — Head without process on frons .................................................................................................................... 4 4 Ocellus present; gena produced into acute process; hemelytron with small costal cell [Lentia Wygodzinsky, 1946] ...................................................................................................... L. corcovadensis Wygodzinsky, 1946 — Ocellus absent; gena produced into small conical process; hemelytron without costal cell [Chryxus Champion, 1898] .......................................................................................................................................................... 5 5 Anterior lobe of pronotum with shallow oblique furrows, anterior angle largely prominent; abdominal connevixum pale with distal dark markings ......................................................... C. tomentosus Champion, 1898 — Anterior lobe of pronotum smooth, without lateral furrows, anterior angle slightly prominent; abdominal connexivum reddish brown to dark brown with dark or pale markings, respectively .......................................... 6 6 Transverse and median longitudinal sulci of pronotum uniformly narrow; apex of scutellum horizontal; femora largely darkened at midlength.... C. garcetebarretti Gil-Santana, Leavengood, Bérenger, Martins & Oliveira, 2022 — Transverse and basal half of median longitudinal sulci of pronotum widened; apex of scutellum curved upwards; femora different in colouration .................................................................................................................... 7 7 Hemelytron with oblique whitish band from base to inner angle of corium, and three whitish patches on membrane; lateral margins of abdomen simple in shape; paramere with large, bifurcated process at middle of inner surface ........................................................................................... C. willemsei Chen, Hartong & Cai, n. sp. — Hemelytron with transverse whitish band near middle of corium, and two whitish patches on membrane; posterolateral angles of abdominal segments II-V distinctly prominent; paramere with small, subquadrate, lamelliform process at middle of inner surface .......................... C. bahianus Gil-Santana, Costa & Marques, 2007

Authors 4

1. Z. Q. Chen

   China Agricultural University

   Affiliation as printed

   State Key Laboratory of Agricultural and Forestry Biosecurity, MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193 (China)

2. Charlotte Hartong Aachen Department of Entomology, Naturalis Biodiversity Centre

   Naturalis Biodiversity Center

   Affiliation as printed

   Department of Entomology, Naturalis Biodiversity Center, Darwinweg 2, 2333 CR, Leiden (The Netherlands)

3. Hu Li

   China Agricultural University

   Affiliation as printed

   State Key Laboratory of Agricultural and Forestry Biosecurity, MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193 (China)

4. Wanzhi Cai

   China Agricultural University

   Affiliation as printed

   State Key Laboratory of Agricultural and Forestry Biosecurity, MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193 (China) caiwz @ cau. edu. cn (Wanzhi Cai, corresponding author)