Formosan long-armed scarab
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Scientific name: Cheirotonus macleayi formosanus (Ohaus)

Features: The Formosan long-armed scarab is a large-sized beetle with a body roughly 5-6.5cm long. Males have elongated front legs that can reach 9-10cm in length, while females have shorter front legs that only grow to about 5cm. Formosan long-armed scarabs have a lustrous, dark brown body, and their heads are dented in the center, point upward on the margins, and have protruding corners. Their pronotum is longitudinally grooved in the center, finely serrated on the margins, and covered with specks; their elytron is covered with drab markings of various size; and their belly is covered with short brown hair, with the longest hairs at the end.
Behavior: Adult Formosan long-armed scarabs are active between late-May and early-October, especially between July and September. They are photokinetic insects.
Habitat: Formosan long-armed scarabs are an endemic subspecies to Taiwan commonly found in mountainous regions. They are the largest beetle in Taiwan.
 
 
 
 
 
 
 
 
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