Canadian Journal of Arthropod Identification

Taxonomic revision of the Nearctic erosa species group of Phymata Latreille, 1802 (Heteroptera: Reduviidae: Phymatinae)

CJAI 41 -- October 1, 2020

Paul Masonick & Christiane Weirauch

| Abstract | Introduction | Checklist | Materials & Methods | Species Key | Taxonomy | Acknowledgments | References | PDF | Cite |
| Appendix |

Nearctic erosa species group
    Figs 3–22, Maps 1–17

Description: Medium to large-sized ambush bugs, total length: males ~6.0–9.5 mm, females ~6.5–11.0 mm; width across lateral angles of pronotum: ~2.2–3.8 mm. STRUCTURE: THORAX: pronotal margin between the lateral and posterior angles without a tooth-like process; scutellum cruciform or subcruciform; forewing membrane simple with two to three basal cells and multiple parallel veins, distal portion of wing membrane never with many anastomosed veins. ABDOMEN: broadened across the fifth abdominal segment, connexivum of abdominal segment 5 often expanded laterally but never bilobed (i.e., forming ultraconnexivum). COLORATION: variable.
Discussion: The vast majority of ambush bugs found in North America belong to the Nearctic erosa species group. These taxa can be distinguished from rarer fauna by their relatively large size, simple wing venation, and various pronotal, scutellar, and connexival characteristics described above and illustrated in Key.