Syntexinae Benson, 1935

Kopylov, Dmitry S., 2019, New anaxyelids (Hymenoptera: Anaxyelidae) from the Cretaceous of Asia, Zootaxa 4603 (2), pp. 341-353 : 346

Subfamily Syntexinae Benson, 1935

Identification key for genera of Syntexinae

1. Fore wing with 1r-rs completely lost...................................................................... 2

- Fore wing with 1r-rs at least partly developed............................................................... 3

2. Fore wing with 2r-rs issuing from the distal quarter of pterostigma; Rs+M as long as 2-M........................................................................................ Cretosyntexis Rasnitsyn et Martinez-Delclos, 2000

- Fore wing with 2r-rs issuing from the middle of pterostigma; Rs+M much longer than 2-M, sometimes bifurcating beyond 1m-cu................................................................................. Eosyntexis Rasnitsyn, 1990

3. Fore wing with 1r-rs incomplete and not reaching R1; tubular veins not developed in the apical third of the wing................................................................................... Curiosyntexis Kopylov , gen. nov.

- Fore wing with 1r-rs complete; tubular veins developed in the apical third of the wing............................... 4

4. Fore wing with pterostigma reaching the middle 3r cell; 2r-rs issuing from the basal third of pterostigma........................................................................................ Dolichosyntexis Kopylov , gen. nov.

- Fore wing with pterostigma not reaching the middle 3r cell; 2r-rs issuing from the middle of pterostigma................ 5

5. Hind wing with m-cu present; distal parts of Rs, M, Cu and A tubular................... Parasyntexis Kopylov , gen. nov.

- Hind wing with m-cu absent; distal parts of Rs, M, Cu and A nebulous.......................... Syntexis Benson, 1935