From Nookipedia, the Animal Crossing wiki
The Goliath Beetle (ゴライアスハナムグリ, Goraiasuhanamuguri) is a red and black beetle that sits on palm trees during the summer months in the evening. It is an expensive insect, selling for 6,000 bells.
Donating to the Museum
In Wild World
"Horned beetles are said to be the largest of the beetle families, wot? Indeed, in some regions, this is the largest beetle on record. It certainly has the largest repulsiveness quota. Hardly something to brag about..."
In City Folk
"Goliath beetles are a variety of fruit beetle with a very long scientific name. As stands to reason, given their name, these beetles are incredibly strong. Beyond that morsel of knowledge, I know little, because they utterly REPULSE me..."
It can be found in the middle terrace on the lonely palm tree to the right of the exhibit.
The Goliathus giganteus (the Goliath Beetle) and the other five members of the genus are all natives to Africa, primarily around the equatorial tropics. Unlike other scarab beetles in the sub. family of Cetoniinae (flower scarab beetles), it requires a high protein diet as a larva - in captivity the larvae can eat cat and/or dog food alongside dried leaves. Like its relatives, adults prefer to feed on sugar-rich fluids like tree sap and the juice from fruits. As in other horned scarabaeoid beetles, only the males possess the tiny horns; females have shorter, rectangular heads.
Names in other languages