Tomcat insects are the Rove Beetle commonly known in the regions as Semut Semai, Semut Kayap or Charlie from Ordo Coleoptera, family Staphylinidea. This explorers beetle spread from Africa, America and Asia including Indonesia and Southeast Asia.
But who would have thought from the tiny body shape it turns out this animal has a 12x deadly poisons from the cobras can. Haemolymph fluid consisting of pederin is a complex non-protein molecule can cause heat, mild pain and sometimes followed by itching. After 12 hours the skin is exposed to toxins will die and will arise bubbles containing pus.
Thanks for @goodkarma
By@ahmadkhairan