http://fishermonk.com/programs/keys/shortkey.html Web• two long threadlike cerci, usually with a third, similarly long and thin caudal filament between them • soft body • large eyes that typically cover most of the head • wings are held vertically when the insect is at rest • two short, bristly antennae • long and thin abdomen • hemimetabolous metamorphosis (egg — naiad — adult)

The Great Lakes Entomologist - CORE

Web13 jun. 2012 · The Mayflies are a nearly cosmopolitan and primitive order of wings insect. The nymphs of all species are aquatic and need unpolluted freshwater. Adults are only … Web3 mrt. 2024 · Mayflies (Ephemeroptera) exhibit a number of ancestral traits that were probably present in the first flying insects, such as long tails and wings that do not fold flat over the abdomen. Their immature stages are aquatic fresh water forms (called “naiads” or “nymphs”), whose presence indicates a clean, unpolluted environment. does griner have a beard

Insects of Scotland: Mayflies/Stoneflies

WebMayflies are small insects, with body sizes of the nymph ranging from 2 mm to a bit over 30 mm (exclusive of the tail and antennae). They are especially common in streams and … WebImmature mayflies ( naiads) have long legs and plate-like gills on the sides of the abdomen, they usually have three long thin tail projections (cerci) but a few species only have two. They have short antennae. Their body color may be green or brown but may vary by the food that is eaten. WebTOPIC 3: Insect Structure and Function 24 External Structure: Abdomen Commonly 5-10 segments (primitively about 12 segments) Often longer and softer than thorax Must be able to expand: • air • water • food • eggs Functions: digestion breathing reproduction External structures: cerci (singular = cercus) ♀ & ♂ reproductive structures prolegs (caterpillars) … f85th