Arulenus

Arulenus is a genus of pygmy grasshopper. As of 2016^[update], it consists of two species:

• Arulenus miae Skejo & Caballero, 2016^[1]
• Arulenus validispinus Stål, 1877^[2]

Arulenus
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Orthoptera
Suborder:	Caelifera
Family:	Tetrigidae
Subfamily:	Scelimeninae
Genus:	Arulenus Stål, 1877
Type species
Arulenus validispinus Stål, 1877

Both species are endemic to Mindanao in the Philippines.

Description

Characteristic features of this genus include: the lack of tegmina and of alae, a smooth pronotum with large, slightly wrinkled spines on its discus, and outwardly turned lateral paranotal lobes.^[1]: 385

Taxonomic history

Carl Stål circumscribed Arulenus in 1877 for the species A. validispinus and A. punctatus, which Stål described in the same paper.^[2] In 1887, Ignacio Bolívar transferred A. punctatus to its own, new genus Hirrius, giving it the name Hirrius punctatus.^[3] Arulenus would be considered a monospecific genus until 2016 with Josip Skejo and Joy Honezza S. Caballero's description of Arulenus miae.^[1]