3.1.4.3. Dasmeusa falcifera Pecly, Takiya, Cavichioli & Mejdalani sp. nov.

Figs 1C, 4A-I

Length.

♂ holotype 7.4 mm; ♂ paratype 8.0 mm; ♀ paratypes 8.4-9.3 mm (n = 3). Male holotype. Head (Figs 1C, 4A): in dorsal view, well produced anteriorly; median length of crown approximately 8/10 of interocular width and 5/10 of transocular width; anterior margin narrowly rounded; frontogenal suture extending onto crown but not attaining ocellus; ocelli of moderate size, located approximately on imaginary line between anterior eye angles; surface of crown flat; antennal ledge, in dorsal view, not protuberant. Thorax (Figs 1C, 4A) with pronotum, in dorsal view, with width approximately equal to transocular width of head; lateral margins slightly convergent anteriorly. Forewing with base of fourth apical cell approximately aligned with base of third.

Coloration (Fig. 1C).

Head, pronotum, and mesonotum pale yellow. Forewing pale yellow, second apical cell with distinct red spot.

Male terminalia.

Pygofer (Fig. 4B), in lateral view, well produced posteriorly; posterior margin narrowly rounded; macrosetae (most of them very large) distributed on posterior half but some located more anteriorly. Subgenital plate (Fig. 4C), in ventral view, with basal half broad and distal half very narrow; with elongate uniseriate macrosetae on basal half, microsetae distributed along outer lateral margin. Connective (Fig. 4D), in dorsal view, V-shaped; stalk not carinate dorsally, much longer than one arm width. Style (Fig. 4D), in dorsal view, slender, elongate, not extending posteriorly beyond apex of connective; slightly narrowed apically, apex obtuse. Aedeagus symmetrical (Fig. 4E); in lateral view, shaft elongate, ventral margin with dentiform process at basal half and elongate process at apex; gonoduct distinct, gonopore located apically. Paraphyses, in dorsal view (Fig. 4F), slightly asymmetrical; elongate, extending well beyond subgenital plate apex; stalk much shorter than rami; in lateral view (Fig. 4G), rami with apexes slightly directed upwards.

Female terminalia.

Sternite VII (Fig. 4H), in ventral view, with posterior margin slightly emarginate. Pygofer (Fig. 4I), in lateral view, with posterior margin narrowly rounded; macrosetae distributed mostly on posterior half. Valvula I, in lateral view, with ventral interlocking device located on basal half of blade. Valvula II, in lateral view, with about 60 non-contiguous teeth.

Etymology.

The name of the new species, Dasmeusa falcifera, refers to the falciform aedeagus (Fig. 4E).

Type locality.

Laussat (French Guiana).

Type material.

French Guiana • ♂ holotype: "French Guiana: Laussat \ P3 \ 05°28′31.6″N - 053°35′07.3″W \ 12.ix.2010 \ Lamarre G. leg"; "White sand forest \ Light trap" (DZRJ). Paratypes • 1 ♂: "FRENCH GUIANA: Montagne \ des Chevaux \ 4°44'56″N - 52°26'28″W, alt. 75 m \ 10.v.2011 \ window trap \ SEAG col." (DZRJ) • 2 ♀♀: same data as preceding except “17.iv.2011” (DZRJ) • 1 ♀: “23.vii.2011” (DZRJ).

Taxonomic notes.

As mentioned in the key, D. falcifera sp. nov. (Fig. 1C) shares with D. rafaeli sp. nov. (Fig. 1I) the presence of a distinct red spot at the second apical cell of the forewing. The former can be readily distinguished from the latter, as well as from the remaining known species of the genus, by paraphyses with the apical portion of the rami, in lateral view, directed dorsally (Fig. 4G) and pygofer well produced posteriorly and with the posterior margin narrowly rounded (Fig. 4B).