Diachlorini

Krolow, Tiago Kütter, Bayless, Keith M. & Henriques, Augusto Loureiro, 2012, Newly discovered males and new records of the uncommon Neotropical genera Eutabanus Kröber and Myiotabanus Lutz (Diptera: Tabanidae), Zootaxa 3389, pp. 25-33 : 32

Key to males of calyptrate-mimicking Neotropical Diachlorini lacking macrosetae on the basicosta ( Eutabanus and Myiotabanus )*

1. Acute anterior projection of notopleural lobe present, wing with discrete transversal band from pterostigma to discal cell, labellum unsclerotized, gonostylus enlarged distally............................................. Eutabanus pictus

- Acute anterior projection of notopleural lobe absent, wing mostly hyaline, without discrete transversal band from pterostigma to discal cell, labellum with sclerotized plates, gonostylus parallel-sided to slightly tapered distally.................... 2

2. Median dark scutal stripe narrower than or as wide as dorsocentral white stripes, gonostylus with deep central v-shaped depression at apex, Costa Rica, Guatemala, Mexico............................................. Myiotabanus muscoideus

- Median dark scutal stripe wider than dorsocentral white stripes, gonostylus with small lateral notch at apex, Brazil, Northern Argentina, Paraguay, Bolivia............................................................................ 3

3. Antennal flagellomeres brown, length> 10 mm excluding antennae, North-Central Brazil........ Myiotabanus amazonicus

- Antennal flagellomeres yellow, length <7 mm excluding antennae, South-central Brazil, Northern Argentina, Paraguay, Bolivia............................................................................. Myiotabanus barrettoi