The H.P. Lovecraft Wiki

At last a shape appeared, flapping above the ground on leathery wings. The thing which flew whirring toward me was followed by a train of others, wings slapping the air at incredible speed... I could ... make out many more details... Those huge lidless eyes which stared in hate at me, the jointed tendrils which seemed to twist from the head in cosmic rhythms, the ten legs, covered with black shining tentacles and folded into the pallid underbody, and the semi-circular ridged wings covered with triangular scales... I saw the three mouths of the thing move moistly, and then it was upon me."
~ EXP, The Insects from Shaggai , Ramsey Campbell

This subject contains information from the Expanded Cthulhu Mythos, and not based on H.P. Lovecraft's works directly. The Shans, also known as the Insects from Shaggai, are an insectoid alien race which appears in the Cthulhu Mythos and were also said to awe the plant-like deity Dzéwà.