| Stethaspis | |
|---|---|
 | |
| Stethaspis longicornis | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Suborder: | Polyphaga |
| Infraorder: | Scarabaeiformia |
| Family: | Scarabaeidae |
| Subfamily: | Melolonthinae |
| Genus: | Stethaspis Hope, 1837 |
Stethaspis is a genus of beetles in the family Scarabaeidae, subfamily Melolonthinae. [1]
Like other Melolonthinae, adult Stethaspis are oval and robust in shape. The antennae are relatively short and have the last few segments flattened and finger-like. The elytra leave the end of the abdomen exposed. Stethaspis are green in colour and range from 13 to 24 mm in length. [2]
Larvae are creamy white with a prominent head, relatively large legs and a darkened posterior end (this darkening is due to the gut contents showing through the body wall). The body is curled up into a C-shape. When mature, Stethaspis larvae can be up to 45 mm long. [2]
Similar to other melolonthines, Stethaspis beetles feed on plant foliage as adults and plant roots as larvae. Adults are known to damage Douglas fir. [2]
Larvae of S. longicornis are eaten by Polynesian rats. [3] Additionally, Stethaspis larvae are potential hosts for the introduced scoliid wasp Radumeris tasmaniensis, an ectoparasitoid of scarab larvae. [4]
Stethaspis follow the usual beetle life cycle of egg, larva, pupa and adult. The life cycle takes two years. [2] Adults emerge en masse in summer. [5]
Stethaspis contains the following species: [1]
