Key for Psychodidae fauna of Fernando de Noronha

(Figs. 1–12)

1 Ascoids with only the posterior branch, of variable shapes and number (Figs. 1–3); terminal flagellomeres not reduced in size; last flagellomere with elongate apiculus (Fig. 2); epandrial appendages with a group of several tenacula arranged from apical to subapical region (Figs. 4, 5) ... Pericomaini ............................................................. 2

– Ascoids Y-shaped or ψ-shaped (Figs. 6, 7); terminal flagellomeres reduced in size; last flagellomere without apiculus; epandrial appendages with very few apical tenacula—only one for Psychoda (Fig. 8) ... Psychodini ............................ 3

2 Ascoids single-branched (Fig. 3); wing vein R 5 ending beyond the apex (Fig. 9); aedeagus with spines internally (Fig. 4); epandrial appendages with eight tenacula.................................................... Telmatoscopus sp.

– Ascoids with two branches (Fig. 2); wing vein R 5 ending in apex (Fig. 10); aedeagus without spines (Fig. 5); epandrial appendages with six tenacula............................................................ Clogmia albipunctata

3 Antenna with 13 flagellomeres and a pair of trident-shaped (ψ) ascoids (Fig. 6); male terminalia with slender epandrial appendages about two times the length of epandrium; male abdomen with a group of dark setae on tergite 7; female subgenital plate with a pair of rosette-shaped ornamentation internally (Fig. 11) ............................. Psychoda savaiiensis

– Antenna with 14 flagellomeres and a pair of Y-shaped ascoids (Fig. 7); male terminalia with cub-like epandrial appendages smaller than epandrium length; male abdomen without a group of dark setae; female subgenital plate without internal rosette ornamentation (Fig. 12)................................................................. Psychoda buxoides