Dendroleontini, Banks, 1899

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 : 72-73

Key to the Australian genera of Dendroleontini

1 Pretarsal claws capable of closing against T5 (i.e., claws sharply bent proximally, followed by a relatively straight shaft and a short apical hook).................................................................................... 9

- Pretarsal claws not capable of closing against T5 (i.e., claws not as above, usually more or less evenly curved throughout).. ................................................................................................... 2

2 (1’) Hind wing shorter than forewing.................................................. Periclystus genus group … 3

- Hind wing longer than forewing........................................................................ 12

3 (2) Thorax dull, covered with microtrichia; forewing not falcate.................................................. 4

- Thorax lustrous, not covered with microtrichia; forewing falcate....................................... Periclystus

4 (3) Mandible clearly visible (anterior view); gena not extended (at most reaching ventral margin of clypeus); legs: T5 <length of T1; specimens small or large............................................................................ 5

- Mandible very small, mostly hidden behind labrum (anterior view); gena extended (reaching ventral margin of labrum); legs: T5 ≥ length of T1; specimens small........................................................ Minyleon gen. nov.

5 (4) Protibia short relative to protarsus (length ratio <1.6), except in Megagonoleon cahillensis species group, in which the female posterior gonapophyses are thin and without cavisetae, and the male paramere is divided into rounded and an acute areas).. ................................................................................................... 6

- Protibia long relative to protarsus (length ratio ≥ 1.6); male and female terminalia shapes different than in the cahillensis species group.......................................................................................... 8

6 (5) Forewing: posterior Banksian line present.............................................. Austrogymnocnemia part

- Forewing: posterior Banksian line absent (line occasionally present in M. radialis , but then prefork area with one row of cells).............................................................................................. 7

7 (6’) Female: ectoproct cavisetae absent, posterior gonapophyses broad and long and usually with cavisetae, lateral gonapophyses (lateral view) height <ectoproct; male: gonarcus anterior margin thinner than posterior (lateral view).................................................................................... Austrogymnocnemia ( secula species group)

- Female: ectoproct cavisetae present (cavisetae absent in M. cahillensis , M. longidigitus and M. tillyardi ), posterior gonapophyses absent, reduced or thin and without cavisetae, lateral gonapophyses (lateral view) height usually ≥ ectoproct (except M. longidigitus and M. tillyardi ); male: gonarcus posterior margin thinner than anterior (lateral view)..................................................................................................... Megagonoleon gen. nov.

8 (5’) Propretarsal claws> 0.5x length of T5; forewing costal area hyaline basally; hind wing presectorial crossvein spurs present (absent in G. froggatti ); male ectoproct rounded posteriorly (lateral view)................................. Glenoleon

- Propretarsal claws ≤ 0.5x length of T5; forewing costal area dark basally; hind wing presectorial crossvein spurs absent; male ectoproct with ventral margin straight and longer than dorsal margin (lateral view), sometimes forming a distal lobe................................................................................................... Riekoleon

9 (1) Forewing: long (> 13 mm), RP with first fork in basal half of the wing.......................................... 10

- Forewing: short (≤ 13 mm), RP with first fork in distal half of the wing................................... Parvoleon

10 (9) Tibial spurs present.................................................................................. 11

- Tibial spurs absent........................................................................... Froggattisca

11 (10) Tibial spurs short (≤ 0.25x length of T1); wings slender, parallel sided.................................. Compsoleon

- Tibial spurs long (≥ 0.5x length of T1); wings broad, wider medially...................................... Newleon

12 (2’) Forewing: about as wide as hind wing, costal area <1.5x height of intraradial area; pronotum with few long setae, and only on its margins......................................................................................... 13

- Forewing: much wider than hind wing, costal area ≥ 1.5x height of intraradial area; pronotum with numerous long setae, not restricted to its margins............................................................................... 14

13 (12) Ocular setae absent; tibial spurs long (≥ 0.5x length of T1)............................................ Dendroleon

- Ocular setae present; tibial spurs absent or very short (≤ 0.25x length of T1)................................. Speleon

14 (12’) Tibial spurs present; male ectoproct rounded posteriorly................................................ Mossega

- Tibial spurs absent; male ectoproct with ventral margin elongated posteriorly............................. Chrysoleon