Psychoda pentagona, sp. nov.

(Figs 115–122)

Etymology. The species name, pentagona, is based on the shape of the genital chamber.

Diagnosis. Eyes separated by 0.5 facet diameters; palpal formula 1.0:0.8:0.8:1.0; subgenital plate subtrapezoidal, pilose except basally, internally with a semi-circular, posteriorly pilose structure; genital digit present.

Female. Head (Fig. 115): vertex, frons and clypeus pilose; hair patch of frons extending as a narrow stripe to facet row 1 or 2; eye bridge with 4 facets; eyes separated by 0.5 facet diameters; 4–5 supra-ocular setae; interocular suture absent; clypeus with 2 or 3 stronger lateral alveoli; frontoclypeal suture absent; antenna incomplete; scape cylindrical, 1.5 the length of subspherical pedicel (Fig. 116); ascoids lost on preparation; palpal formula 1.0:0.8:0.8:1.0 (Fig. 117); labellum with 4 apical teeth and 2 lateral setae (Fig. 118). Wing (Fig. 119): Sc vein ending just beyond base of vein Rs; radial and medial forks complete. Distitarsus with apical projection (Fig. 120). Terminalia: subgenital plate subtrapezoidal, bilobed, homogeneously pilose except basally,with basal band presenting short median posterior projection (Fig. 121); genital digit present; subgenital plate internally with a semi-circular structure pilose on posterior end (Fig. 122); genital chamber subtrapezoidal, with posterior apodeme (Fig. 121).

Male. Unknown.

Material examined. Holotype Ƥ BRAZIL, Amazonas, Silves, Saracá, 01.vi.1997, 6cdc – 1m, no collector name (INPA). Paratypes: 1 Ƥ same locality and date of holotype (MZUEFS); 2 Ƥ Amazonas, Silves, Saracá, área 2, 02.vi.1997, 7cdc – 1m, col. TVB/FLS (1 INPA, 1 MZUEFS); 3 Ƥ Amazonas, Manacapuru, Cajatuba, km 69/3, copa, 10.x.1998, 3 cdc, no collector name (INPA).

Distribution. Brazil (Amazonas).

Comments. As the apical flagellomeres are missing, this species cannot be assigned to any subgenera.