The icon is a picture of a bug. The icon is shaped curved, but narrow, with two eyes on its 'head'. The icon is a caterpillar.
This is a Caterpillar icon. We've made it in
iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,100 icons, all in the same style and quality.