FIGURE 8. Mesozoic Perissommatinae. A, B in Review of Mesozoic Perissommatidae (Insecta: Diptera)

FIGURE 8. Mesozoic Perissommatinae. A, B. Head and total view of Palaeoperissomma collessi Kovalev in Kalugina & Kovalev, 1985, PIN No. 1255/1341 (Kubekovo, J2). C, D. Head and total view of?Palaeoperissomma demetrii Kovalev, 1990, holotype PIN No. 1742/667 (Turga, K1). E, F. Head and total view of Gurvaniella hosbayari Kovalev, 1986, holotype PIN No. 3149/1789 (Gurvan, K1). Scale bars 200 μm (A, C, E), 1 mm (B, D, F). Abbreviations: e, eye; f, vein-like fold; o, ocelli.