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

Figures

FIGURES 4A–F. Habitus of Maurodus spp.; A, Maurodus arcus, dorsal; B, Maurodus arcus, lateral; C, Maurodus cinctiger, dorsal, length 4.1 mm; D, Maurodus cinctiger, lateral, length 4.2 mm; E, Maurodus cinctiger, dorsal; F, Maurodus cinctiger, ventral.

FIGURES 5A–H. Habiti and structures of Maurodus spp.; A, Maurodus impressus, dorsal view of holotype, length 3.1 mm; B, Maurodus cinctiger, frontal view of head; C, Maurodus cinctiger, dorsal view of head and pronotum; D, Maurodus lepidus, dorsal; E, Maurodus lepidus, dorsal; F, Maurodus maculatus, dorsal; G, Maurodus maculatus, lateral; H, Maurodus maculatus, oblique lateral.

FIGURES 6A–F. Habitus and structures of Maurodus spp.; A, Maurodus nunni, dorsal; B, Maurodus nunni, dorsal; C, Maurodus nunni, lateral; D, Maurodus ornatus, anterior view of head; E, Maurodus occiduus, dorsal; F, Maurodus occiduus, lateral.

FIGURES 7A–I. Habitus and structures of Maurodus spp.; A, Maurodus ornatus, dorsal; B, Maurodus ornatus, lateral, length 3.8 mm; C, Maurodus ornatus, dorsal, length 3.9 mm; D, Maurodus ornatus, lateral; E, Maurodus ornatus, dorsal view of head and pronotum; F, Maurodus cinctiger, dorsal view of adeagus; G, Maurodus cinctiger, lateral view of adeagus; H, Maurodus ornatus, dorsal view of adeagus; I, Maurodus ornatus, lateral view of adeagus.

FIGURES 8A–F. Habitus of Maurodus spp.; A, Maurodus owenensis, dorsal; B, Maurodus owenensis, ventral; C, Maurodus plagiatus, dorsal; D, Maurodus plagiatus, ventral; E, Maurodus plagiatus, lateral; F, Maurodus plagiatus, dorsal holotype.

FIGURES 9A–D. Habitus of Maurodus supernus; A, dorsal; B, ventral; C, lateral; D, ventral.