Tips of outer gonostyli (upper) and interbases (lower) of some Palaearctic and Oriental Helius (Helius) species a H. (H.) anamalaiensis Alexander, 1967 b H. (H.) apophysalis Alexander, 1967 c H. (H.) arunachalus Alexander, 1975 d H. (H.) attenuatus (Alexander, 1929) e H. (H.) catreus Alexander, 1967 f H. (H.) costosetosus Alexander, 1932 g H. (H.) franckianus (Alexander, 1940) h H. (H.) fuscoangustus Alexander, 1967 i H. (H.) garcianus Alexander, 1972 j H. (H.) haemorrhoidalis (Alexander, 1937) k H. (H.) oxystylus (Alexander, 1967) l H. (H.) perflavens Alexander, 1964 m H. (H.) pluto (Alexander, 1932) n H. (H.) serenus Alexander, 1967 o H. (H.) tanyrhinus Alexander, 1964 p H. (H.) taos Alexander, 1967 q H. (H.) tienmuanus (Alexander, 1940) r H. (H.) verticillatus Alexander, 1967. After Alexander 1929a (d), 1932a (f), 1932b (m), 1937 (j), 1940a (g), 1940b (q), 1964 (l, o), 1967 (a, b, e, h, k, n, p, r), 1972 (i), 1975 (c).

 
 
  Part of: Xu Y, Zhang S, Wang G, Yang D, Zhang X (2023) First records of the crane fly genus Helius Lepeletier & Serville (Diptera, Limoniidae) in Guangxi, China with description of one new species. ZooKeys 1168: 131-149. https://doi.org/10.3897/zookeys.1168.104106