Doral aspects (pre-rotation sense) of the male genitalia of Ae. nigrinus (A) and Ae. sticticus (B), which are distinguished by the shape of the basal dorsomesal lobe (BDL).

 
 
  Part of: Harbach RE, Dallimore T, Briscoe AG, Culverwell CL, Vaux AGC, Medlock JM (2017) Aedes nigrinus (Eckstein, 1918) (Diptera, Culicidae), a new country record for England, contrasted with Aedes sticticus (Meigen, 1838). ZooKeys 671: 119-130. https://doi.org/10.3897/zookeys.671.12477