Li'l Smooch Spider
From the Super Mario Wiki
Li'l Smooch Spiders are miniature versions of Smooch Spiders that first appear in Yoshi's Woolly World. They attack Yoshi by crawling into him and try to kiss him to hurt him and Yoshi can also get hurt if he touches them. To defeat them, Yoshi can throw a Yarn Ball at them, swallow them (this cannot be done with regular, larger Smooch Spiders), or simply jump on them.
Li'l Smooch Spiders only appear in the course, Lair of the Smooch Spiders.
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