Euvelia

Aristizábal-García, Hernán, Floriano, Carla Fernanda Burguez, Moreira, Felipe Ferraz Figueiredo & Bispo, Pitágoras Da Conceição, 2015, New species and notes on Microveliinae from northern South America (Hemiptera: Heteroptera: Veliidae), Zootaxa 3980 (4), pp. 591-596 : 594-595

Key to the species of Euvelia [modified from Polhemus & Polhemus (1984)]

1 Body long (> 2.7 mm); male fore femur with a tuft of brown setae on anteroventral third ( Fig. 6 ); female pronotum with longitudinal shining area, subequal in width to antennomere I ( Fig. 4 )........................ Euvelia mazzucconiae sp. nov.

- Body short (<1.50 mm); male fore femur without tuft of brown setae on anteroventral third; female pronotum without longitudinal shining area..................................................................................... 2

2 Body very broad (maximum width 1.05 mm); connexival segments I and IV with silvery hair patches; connexives without pruinose areas....................................................... Euvelia discala J. Polhemus & D. Polhemus

- Body less broad (maximum width 0.95 mm); connexival segments without silvery hair patches; connexival segments II and

IV–VII (at least) with pruinose areas...................................................................... 3 3 Male fore trochanter produced distally into a distinct spur ( Fig. 7 ); female width across humeri about 1.5 times width of head across eyes; females without glabrous area on pleura........................................ Euvelia advena Drake

- Male fore trochanter not or only slightly produced; females with a glabrous area on pleura or humeri almost twice as wide as head across eyes...................................................................................... 4

4 Female broad, with short to moderately stout setae and no glabrous area on pleura; male with a short anteriorly directed spur or tuft of soft setae distally on fore trochanter ( Fig. 8 )........................... Euvelia lata J. Polhemus & D. Polhemus

- Female narrower, without stout setae, but with a depressed glabrous area on pleura; males without spur or tuft on fore trochanter..............................................................................................

Figures

FIGURES 6 – 8. 6. Euvelia mazzucconiae sp. nov male fore leg. Scale = 0.5 mm. 7. Euvelia advena, male fore trocanter [from Polhemus & Polhemus (1984)]. 8. Euvelia lata, male fore trochanter. Scale = 0.12.

FIGURES 2 – 5. Euvelia mazzucconiae sp. nov. 2. Male, dorsal view. 3. Male, ventral view. 4. Female, dorsal view. 5. Female, ventral view.