Figure 3 from: Vikhrev N (2011) Review of the Palaearctic members of the Lispe tentaculata species-group (Diptera, Muscidae): revised key, synonymy and notes on ecology. ZooKeys 84: 59-70. https://doi.org/10.3897/zookeys.84.819

Figure 3 - Male terminalia. 1, 2 Lispe sericipalpis Stein, 1 cercal plate 2 sternite 5; 3, 4 Lispe orientalis Wiedemann, 3 cercal plate 4 sternite 5 (from two points of view).
In Lispe sericipalpis the cercal plate is more pointed, sternite 5 has the median process thinner and longer.