Key to Psychodidae species found in Uruguay 1 Eyes reniform, with extension towards midline forming eye bridge above antennal insertions......................... 2 - Eyes nearly round; eye bridge absent...................................................................... 8 2 Wing narrow, pointed, length 6–8 times width................................................... Maruina Müller - Wing normal, lenght 2–3 times width...................................................................... 3 3 Wings held horizontally; flagellomeres nodiform, male genitalia symmetrical...................................... 4 - Wings held roof shaped; flagellomeres 1–11 flask shaped, distal flagellomeres noticeably reduced; male aedeagus asymmetrical................................................................................................. 5 4 Wing with numerous small spots; male ascoids arranged in a double row around flagellomere node; female ascoids palmate, with 4–6 branches............................................................. Paramormia furcata (Kincaid) - Wing without spots. Female ascoids digitate; Male ascoids V-shaped................... Clogmia albipunctata (Williston) 5 Wing with apices infuscated; genital digit absent; subgenital plate V-shaped..................... Psychoda alternata Say - Wing without infuscation; genital digit present; subgenital plate otherwise........................................ 6 6 Radial fork incomplete; subgenital plate longer than wide; internal ornamentation of subgenital plate with a semi-circular structure at the base of the genital digit, and a thin and small structure lateral to the digit......... Psychoda zetoscota Quate - Radial fork complete; subgenital plate wider than long........................................................ 7 7 Subgenital plate internally with a pair of rosette-shaped structures....................... Psychoda savaiiensis Edwards - Subgenital plate ending in two small lobes, leaving a semicircular ample space between them; genital digit 3.0–3.5X as long as width, and internally with a kidney-shaped genital sac..................................... Psychoda cinerea Banks 8 Radial vein with 4 branches; 1 vein between radial and medial forks; CuA2 long extending beyond level of medial fork.................................................................................. Trichomyia Haliday in Curtis - Radial vein with 5 branches; 2 veins between radial and medial forks............................................ 9 9 R4 branching from R5; lateral extensions in the abdomen bearing ornamental setulae.... Laurenceomyia martinezae sp. nov. - R4 branching from R2+3; withouth lateral extensions on the abdomen........................................... 10 10 Female cibarium with 4 longitudinal rows of horizontal teeth; head with complete interocular suture.................................................................................... Brumptomyia guimaraesi (Coutinho & Barreto) - Female cibarium with 1 transverse row of horizontal teeth; head with interocular suture incomplete................... 11 11 Palpomere 4 clearly shorter than second; palpomere 5 shorter than combined lenght of 3+4; female cibarium with several rows of verticalized anterior teeth.......................................................... Nyssomyia neivai (Pinto) - Palpomere 2 equivalent or longer than fourth; female cibarium with one row of anterior teeth........................ 12 12 Female cibarium with four posterior teeth; basal tuft of male gonocoxite with 5 setae, dorsal margin of paramere little concave......................................................................... Evandromyia cortelezzii (Brèthes) - Female cibarium with eigth or more teeth; basal tuft of male gonocoxite with 4 setae............................... 13 13 Paramere of male with dorsal setae born in a well-developed tubercule...................................................................................................... Lutzomyia gaminarai (Cordero, Vogelsang & Cossio) - Paramere of male with dorsal setae inserted directly on paramere, not on a well-developed tubercule........................................................................................... Lutzomyia longipalpis (Lutz & Neiva)

Published as part of Canneva, Bruno, 2019, A new species of Laurenceomyia Wagner & Stuckenberg, with a key to species and new records for Psychodidae (Diptera) from Uruguay, pp. 407-418 in Zootaxa 4544 (3) on page 416, DOI: 10.11646/zootaxa.4544.3.6, http://zenodo.org/record/2618423