Simplify the following text for a Grade 9 native English-speaking person.
Original: They resemble a mix between praying mantids and phasmids , and molecular evidence indicates that they are most closely related to the equally enigmatic group , Grylloblattodea , with which they have now been grouped together in the order Notoptera .
Simplified: They resemble a mix between praying mantids and phasmids . Molecular evidence indicates that they are most closely related to a family known as the Grylloblattidae .