1	Third tergite 1.1–1.6 × as long as second tergite medially and flattened in lateral view; first tergite movably joined to second tergite; second tergite with wide and anteriorly widened medial area; second suture of metasoma curved and together with lateral grooves of medial area more or less X-shaped; head 0.8–1.0 × as wide as mesoscutum; prepectal carina absent; fourth-sixth tergites more or less sclerotized; scapus moderately oblique apically	Pseudofornicia van Achterberg, gen. n.
–	Third tergite 0.5–0.9 × as long as second tergite medially and curved in lateral view; first tergite immovably joined to second tergite; second tergite with narrow and anteriorly parallel-sided medial area; second suture of metasoma straight and not connected to lateral grooves of medial area and not X-shaped; head 0.7–0.8 × as wide as mesoscutum; prepectal carina present behind fore coxa; fourth-sixth tergites mainly membranous; scapus strongly oblique apically	Fornicia Brullé