This question has an answer (previously) already accepted and upvoted. However, the identification is incorrect.
This insect belongs to other Genus, Melamphaus. Here is an image of Melamphaus sp:
The image in the (previously) accepted answer is, in fact, an image of Melamphaus, not Antilochus. What probably happened is that the source (a blog) whose image was copied is wrong. The fact that the blog got the epithet wrong (conqueberti instead of coquebertii) corroborates this.
For comparison, here is an image of Antilochus coquebertii from a reliable source, the Journal of Entomology and Zoology Studies: