Cyclolabus Heinrich, 1936
Cyclolabus is a moderate-sized genus that is closely related, if not, derived within Platylabus. The primary difference is that Cyclolabus has circular propodeal spiracles, whereas Platylabus has slit or oval-shaped spiracles. Even Heinrich (1962) notes that "The borderline between Platylabus and Cyclolabus is not very sharp, as some species of the former genus with small and short-oval spiracles approach the latter."
In addition to the 11 described species, there are probably only a 2-4 undescribed species.
Diagnosis
- costulae usually well-developed but sometimes absent
- propodeal spiracle circular
- gastrocoeli and thyridia wide and well-developed