Microdytes

Miller, Kelly B. & Wewalka, Günther, 2010, Microdytes Balfour-Browne of India with description of three new species (Coleoptera: Dytiscidae: Hydroporinae), Zootaxa 2420, pp. 26-36 : 27

Key to specimens of Microdytes from India

1 Punctures on metacoxae moderately course to very course......................................................................................... 2

- Punctures on metacoxae missing or very fine.............................................................................................................. 7

2 Punctures on metacoxae very course and regular......................................................................................................... 3

- Punctures on metacoxae moderately course and irregular............................................................................................ 6

3 Body oblong-oval, moderately convex; TL: 1.90–2.50 mm......................................... M. championi Balfour-Browne

- Body globular, strongly rounded.................................................................................................................................. 4

4 Pronotum and elytra predominantly yellowish-brown; TL: 1.90–2.15 mm................................... M. sabitae Vazirani

- Pronotum and elytra predominantly red-brown to dark-brown.................................................................................... 5

5 Elytral punctation consisting of coarse and fine punctures; TL: 1.55–1.80 mm............................... M. svensoni sp. n.

- Elytral punctation consisting of one kind of coarse punctures; TL: 170– 1.90 mm................ M. belli Balfour-Browne

6 Body oblong-oval, elytral punctation fairly fine and regular; TL: 1.60–1.90 mm........... M. maculatus (Motschulsky)

- Body regularly oval, elytral punctation consisting of strong and fine punctures; TL: 1.60–1.90 mm...................................................................................................................................................... M. elgae Hendrich, Balke & Wewalka

7 Body regularly oval, punctation on head and pronotum distinct; TL: 1.40–1.50 mm.......... M. schoenmanni Wewalka

- Body oblong-oval, punctation on head and pronotum very fine to almost missing..................................................... 8

8 Body dorsoventrally compressed, elytra predominantly yellow-brown; TL: 1.33–1.53 mm............. M. whitingi sp. n.

- Body moderately convex, elytra predominantly red-brown to dark brown.................................................................. 9

9 Larger species, head and pronotum predominantly dark brown to black; TL: 1.30–1.45 mm...... M. boukali Wewalka

- Smaller species, head and pronotum predominantly red-brown; TL: 1.19–1.30 mm...................... M. cameroni sp. n.