FIGURE 4. Collessomma gen. nov. A–C. C in Review of Mesozoic Perissommatidae (Insecta: Diptera)

FIGURE 4. Collessomma gen. nov. A–C. C. sibirica gen. et sp. nov. A, B. Male? PIN No. 5026/206, wing and tarsus. C. Holotype PIN No. 5340/1681, male terminalia. D, E. C. gnoma gen. et sp. nov. Holotype PIN No. 5026/201, wing and male terminalia. F, G. C. mongolica gen. et sp. nov. F. Paratype PIN No. 3559/4154, wing. G. Holotype PIN No. 3559/10039, female terminalia. Abbreviations: aed, aedeagus; cerc, cerci; gst, gonostylus; gx, gonocoxite; TG6–9, tergites 6–9; ST6-8, sternites 6–8. Scale bars 1 mm (A, F), 500 μm (D), 200 μm (C, E, G), 100 μm (B).