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Key to the species of Haywardina

The following key is copied from Norrbom (1994).

1. Postpronotal lobe and scutum, except for white postsutural stripes, brown. Pleuron brown except for yellow anepisternum. Scutellum brown except apical 2/5 white. (Argentina). . . . . . . . . obscura Norrbom

- Postpronotal lobe white. Scutum, except for postsutural brown spots and white stripes, yellow. Pleuron mostly yellow, at most with brown spots on anepisternum, katepisternum and katatergite. Scutellum yellow at least basomedially. . . . . . . . . . 2

2. Scutellum entirely yellow. Discal band extended across R-M and DM-Cu. Subapical band absent. Posterior orbital seta absent. (Argentina). . . . . . . . . . . . . . cuculi (Hendel)

- Scutellum with large basal brown spots on sides. Discal band extended only across R-M. Subapical band present, extended over DM-Cu. Posterior orbital seta present. . . . . . . . . . . . . 3

3. Anepisternum, katepisternum, katatergite and mediotergite each with large brown spot. Accessory costal band absent. Subapical band with anterior end strongly basally curved and separate from apical band. Aculeus tip without subapical notches. (Peru). . . . . . . . cuculiformis (Aczél)

- Anepisternum, katepisternum, and katatergite yellow except for white areas. Accessory costal band present (Fig. 6A). Subapical band straight anteriorly and narrowly connected to apical band. Aculeus tip with small subapical notches. (Peru, Ecuador). . . . . . . . bimaculata Norrbom