Class Insecta: External Morphology and Adaptations Some basic terminology . . . Insect body parts Insect Legs— basic plan Leg modifications Natatorial legs Antennae chewing mouthparts (grasshopper) diagram of chewing (mandibular) mouthparts of grasshopper piercing-sucking mouthparts (Hemiptera) piercing-sucking mouthparts (mosquitoes) lapping mouthparts (honey bee) siphoning mouthparts (butterfly) sponging mouthparts (house fly) Photo sources