Maurodus, Leschen & Reid & Nadein, 2020

Leschen, Richard A. B., Reid, Chris A. M. & Nadein, Konstantin S., 2020, Generic Review of New Zealand Chrysomelinae (Coleoptera: Chrysomelidae), Zootaxa 4740 (1), pp. 1-66 : 33-34

Key to species of Maurodus

1. Body, exclusive of mouthparts and appendages, unicoloured ( Fig. 5A).................................. M. impressus

- Body bi- or mulicoloured............................................................................... 2

2. Elytra unicoloured ( Fig. 6A)...................................................................... M. nunni

- Elytra bi- or multicoloured.............................................................................. 3

3. Pronotum completely unicoloured yellow, pale or orange ( Figs 8C, 9A).......................................... 6

- Pronotum bicoloured ( Figs 6E, 7D)....................................................................... 4

4. Epipleuron bicoloured and black at base ( Fig. 7D)................................................... M. ornatus

- Epipleuron unicoloured ( Fig. 5H)........................................................................ 5

5. Legs entirely black ( Fig. 8B)........................................................................... 10

- Legs yellow or bicoloured ( Fig. 5H)...................................................................... 7

6. Elytral maculae extending laterally toward apical ½ ( Fig. 9A); male tarsomere 1 not greatly enlarged ( Fig. 9C)..................................................................................................... M. supernus

- Elytral maculae not extending laterally to apex ( Fig. 8C); male tarsomere 1 greatly enlarged ( Fig. 8D)......... M. plagiatus

7. Body form more broadly-oval ( Figs 4C, E); lateral edge of elytral macula usually more even and not strongly sinuate ( Fig. 4E)....................................................................................... M. cinctiger

- Body form more elongate-oval ( Figs 4A, 5F, 6E); lateral edge of elytral macula always irregular and strongly sinuate ( Fig. 5G)................................................................................................ 8

8. Pale or yellow area of pronotal disc not reaching level of posterior angle ( Figs 4A,B)......................... M. arcus

- Pale or yellow area of pronotal disc reaching level of posterior angle ( Figs 5F,H, 6E,F).............................. 9

9. Body form spherical with pronotal sides divergent towards base and elytra widest at basal third with sides more convex in outline ( Fig. 5F); male abdominal ventrite 5 vaulted at middle ( Fig. 4B)................................ M. maculatus

- Body form broader with pronotal sides subparallel towards base and elytra widest at middle with sides weakly convex in outline ( Fig. 6E); male abdominal ventrite 5 not vaulted at middle............................................ M. occiduus

10. Prosternal carinae convergent ( Fig. 9D); body more curved rounded with sides of pronotum evenly convex ( Fig. 5D).................................................................................................. M. lepidus

- Prosternal carinae parallel-sided ( Fig. 8B); body broadly oval and sides of pronotum not evenly convex ( Fig. 8A).................................................................................................. M. owenensis