Unidentified grasshoper, Cat Tien, Vietnam by Richard Seaman

Asian flower mantis, Cat Tien, Vietnam.

Unidentiied ant, Vietnam by Richard Seaman

A firefly on a very beaten up leaf in Cuc Phuong national park. by Richard Seaman

Weevil, Cat Tien, Vietnam.

Calliphara nobilis, Nha Trang, Vietnam by Richard Seaman

A whip scorpion which was under a log at Cuc Phuong national park, Vietnam.

Whip scorpions are arachnids, but despite their name they're not poisonous, though they spray fairly concentrated acetic acid when disturbed. Because acetic acid is the main ingredient of vinegar, this has given them their common name "vinegaroons".