Acanthoplectrini

Machado, Renato Jose Pires & Oswald, John David, 2020, Morphological phylogeny and taxonomic revision of the former antlion subtribe Periclystina (Neuroptera: Myrmeleontidae: Dendroleontinae), Zootaxa 4796 (1), pp. 1-322 : 33

Key to the genera of Acanthoplectrini

1 Tibial spurs absent, or if present, without a pronounced hook on inner side........................................ 2

- Tibial spurs present, with a pronounced hook on inner side........................................ Acanthoplectron

2 (1) Labial palp short (about as long as maxillary palp, shorter than head width)....................................... 3

- Labial palp long (longer than maxillary palp, longer than head width) ( Fig. 10b )............................ Csiroleon

3 (2) Profemur swollen (much wider than protibia) ( Fig. 22b ); protibial spurs present, long (reaching apex of T4) and strongly curved.............................................................................................. 4

- Profemur not swollen (about as wide as protibia); protibial spurs absent, or if present, short (reaching no farther than apex of T2) and gently curved.................................................................................. 6

4 (3) Tibial spurs of similar length on all legs................................................................... 5

- Tibial spurs of different lengths on each pair of legs (longest on prolegs, shortest on metalegs)........... Anomaloplectron

5 (4) Forewing subcostal area without brown marks ( Fig. 24c ); body mostly pale; female terminalia without ventromedial plate ( Fig. 25b ).................................................................................. Latileon gen. nov.

- Forewing subcostal area with brown marks ( Fig. 22d ); body mostly dark; female terminalia with ventromedial plate ( Fig. 25b )......................................................................................... Fusoleon

6 (3’) Protibial spurs present; mesotibia not expanded (about as wide as femur)......................................... 7

- Protibial spurs absent; mesotibia expanded (wider than femur) ( Fig. 20c ).................................. Franzenia

7 (6) Ocular setae present; forewing costal area uniareolate; Australia................................. Fissuleon gen. nov.

- Ocular setae absent, forewing costal area usually biareolate; Southeast Asia................................ Layahima

Figures

FIGURE 10. Csiroleon tumidipalpus: a) head, anterior; b) head and thorax, lateral; c) head and thorax, dorsal; d) wings, dorsal.

FIGURE 20. Franzenia irrorata: a) head, anterior; b) head and thorax, dorsal; c) mid leg, anterior; d) wings, dorsal.

FIGURE 22. Fusoleon stigmatus: a) head, anterior; b) right foreleg, ventrolateral; c) head and thorax, dorsal; d) wings, dorsal.

FIGURE 24. Latileon hyalinus sp. nov.: a) head, anterior; b) head and thorax, dorsal; c) wings, dorsal.

FIGURE 25. Latileon hyalinus sp. nov.: female: a) terminalia, lateral; b) terminalia, ventral. Scale bars = 0.5 mm.