Four new species of Plega Navás, 1928 (Neuroptera: Mantispidae) from Mexico Author Ardila-Camacho, Adrian Author Cancino-López, Rodolfo J. Author Acevedo, Fernando Author Contreras-Ramos, Atilano text Zootaxa 2019 2019-05-30 4612 3 351 372 journal article 26636 10.11646/zootaxa.4612.3.3 b44cc4b4-b91b-4b33-a875-3cc2e4d988d5 1175-5326 3235144 FAC1C8CA-A39D-4E88-9863-69958E938540 Key to Mexican species of Plega (Modified from Ferris 1940 ; Linsley & MacSwain 1955 ; Rehn 1939 ; Parker & Stange 1965 ; Rice 1987 ). Note: This key was produced only to identify male specimens of Mexican species of Plega . Females were obmitted, since none of the North American species of this genus have been described from this sex. 1. Antennae filiform, basal flagellomeres about as long as wide (Fig. 11a).......................................... 2 - Antennae submoniliform, basal flagellomeres discoidal ( Fig. 2a )................................................ 5 2. Male ectoproct with thick and prominent spinous setae on posteroventral region ( Fig. 8c ); male gonocoxites 9 tapering, lacking spines ( Figs. 9 , 13c )....................................................................... P. spinosa sp. n. - Male ectoproct with thin setae on the entire surface; male gonocoxites 9 with apical spines........................... 3 3. Antennal flagellum completely pale brown (Fig. 11a); male gonocoxites 9 with 8–10 apical spines arranged in a bundle ( Figs. 12 , 13d )................................................................................. P. stangei sp. n. - Antennal flagellum brown with 3–4 preapical pale articles; male gonocoxites 9 with 1–3 preapical spines............... 4 4. Male gonocoxite 9 with one short preapical spine (rarely an additional smaller one present) ( Fig. 14g ); male sternite 8 with a posteromedian small tubercle................................................................... P. yucatanae - Male gonocoxite 9 with three preapical spines ( Fig. 14e ); male sternite 8 without posteromedian tubercle...... P. melitomae 5. Male gonocoxites 9 with 3–5 apical spines................................................................. 6 - Male gonocoxites 9 with 7–15 apical spines................................................................ 8 6. Male gonocoxites 9 with five intertwined apical spines ( Fig. 14c )...................................... P. fratercula - Male gonocoxites with three apical spines.................................................................. 7 7. Male gonocoxites 9 with three apical curved and elongated spines subequal in length ( Fig. 14f )................ P. signata - Male gonocoxites 9 with 3–4 subparallel, apical spines of different size ( Fig. 6 , 13b ).................... P. sonorae sp. n 8. Male gonocoxites 9 with 10–13 brush-like arranged apical spines ( Fig. 3 , 13a )......................... P. mixteca sp. n - Male gonocoxite with 7–15 apical spines arranged in a different form............................................ 9 9. Male gonocoxites 9 relatively stout distad, apical spines twisted ( Fig. 14b )................................ P. dactylota - Male gonocoxites 9 relatively slender distad, with closely adpressed apical spines which are along the general axis of the gonocoxite............................................................................................. 10 10. Male gonocoxites 9 with seven apical spines ( Fig. 14a )................................................. P. banksi - Male gonocoxites 9 with eight apical spines ( Fig. 14d )................................................. P. fumosa