Key to species of Lesteva of Portugal and Spain

1 Lateral sides of pronotum with deep impression. Forebody with very coarse punctation. Parameres wide (Fig. 88g in Zanetti (1987)). Body yellow-brown to brown. Body length: 3.20–4.00 mm.................................. L. sicula heeri

- Lateral sides of pronotum without impression. Forebody with fine or moderately coarse punctation. Parameres narrow. Body usually darker....................................................................................... 2

2 Antennomeres 6–10 moderately short and wide, antennomere 10 slightly longer than broad.......................... 3

- Antennomeres 6–10 long and slender, antennomere 10 about or more than twice as long as broad..................... 6

3 Apical margins of elytra straight. Apical segment of metatarsus longer than basal tarsomere. Median lobe with longitudinal ridge (Fig. 88p in Zanetti (1987)). Body length: 3.30–4.70 mm ......................... L. longoelytrata longoelytrata

- Apical margins of elytra widely rounded.Apical segment of metatarsus about as long as or shorter than basal tarsomere. Median lobe without longitudinal keel........................................................................... 4

4 Median lobe narrow, parameres moderately short (Figs. 32, 34, 36). Body brown. Body length: 4.10–5.05 mm. Habitus as in Figs. 29–30.................................................................................. L . osellai

- Median lobe different, parameres long. Body brown to reddish-brown........................................... 5

5 Pronotum wider, sharply narrowed posteriad. Apical portion of median lobe narrow, parameres very long, significantly exceeding apex of median lobe (Fig. 18). Body smaller: 3.20–4.00 mm. Habitus as in Fig. 11................ L . lusitana

- Pronotum narrower, gradually narrowed posteriad.Apical portion of median lobe moderately wide, parameres slightly exceeding beyond apex of median lobe (Fig. 90a in Zanetti (1987)). Body larger: 4.00– 4.80 mm ..................... L. monticola

6 Temples distinctly longer than eyes. Aedeagus as in Figs. 23, 25, 27. Body length: 3.00– 4.80 mm. Habitus as in Fig. 13................................................................................................ L . mateui

- Temples about as long as or shorter than eyes............................................................... 7

7 Elytra significantly widened posteriad.................................................................... 8

- Elytra slightly widened posteriad........................................................................ 9

8 Elytra broader than long. Median lobe moderately wide; parameres narrow (Fig. 20, 22). Body length: 3.75–4.65 mm. Habitus as in Fig. 12.................................................................................. L . mariei

- Elytra longer than broad. Median lobe very narrow; parameres wide (Fig. 3). Body length: 3.50–4.55 mm. Habitus as in Fig. 1......................................................................................... L . aterrima

9 Punctation of elytra fine and superficial. Aedeagus as in Fig. 16 or Fig. 92с in Zanetti (1987). Body length: 3.60–4.60 mm. Habitus as in Fig. 10.......................................................................... L . hanseni

- Punctation of elytra moderately coarse and deep........................................................... 10

10 Body yellow-brown to reddish-brown, usually with large yellowish spots on elytra. Median lobe, gradually widened toward apical third, with rounded apex (Fig. 6). Body length: 3.50–4.60 mm. Habitus as in Fig. 2................... L . balearica

- Body darker, without spots on elytra. Median lobe different.................................................. 11

11 Median lobe pubescent; apical part of median lobe moderately narrow, strongly narrowed toward apex (Figs. 38, 41, 43, 45). Body length: 3.50–4.10 mm. Habitus as in Fig. 31................................................. L . pubescens

- Median lobe without pubescence; apical part of median lobe wide, abruptly narrowing toward apex (Fig. 14). Body darker, without spots on elytra. Body length: 3.50–4.55 mm. Habitus as in Fig. 9............................... L . fontinalis