Ecol 130 Study Guide

Ecol 130 Study Guide - Ecol 130 Exam 2 Study Guide 1. How...

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Ecol 130 Exam 2 Study Guide 1 1.   How old is the insect lineage? 400 million years 2. Give the names of 10 orders that belong in the class Insecta. 1. Lepidoptera (butterflies and moths) 2. Mantodea (mantids) 3. Blattaria (roaches) 4. Homoptera (aphids, whiteflies, cicadas, etc) 5. Coleoptera (beetles) 6. Hemiptera (bugs) 7. Isoptera (Termites) 8. Diptera (flies) 9. Hymenoptera 10. Neuroptera 11. Orthoptera 3. Describe the distinctive traits of dipterans, colepterans, hemipterans, hymenopterans,  isopterans, orthopterans, lepidopterans, homopterans. Dipterans o Flies o 1 pair of wings. o Mouthparts highly variable o Most species feed on nectar, but many species feed on sap and blood. Coleopterans o Beetles o Two pairs of wings. o Forewings toughened to form elytra (wing cases). o The most diverse of the insects. Hemipterans o Bugs o Most species hold their wings flat. o Triangular structure (scutellum), creating an x- shaped pattern. o Mouth parts form a slender tube under head. o Many feed on plant juices and some are predaceous. o Some like to feed on you. Hymenopterans o Bees, wasps and ants. o Winged members have four membranous wings. o Many are social and live in colonies. o The most beneficial to humans. Isopterans o Termites o Pale body o Feed on dead wood o Related to cockroaches o Form colonies and their societies are the oldest. o King, queen, soldiers, workers. Orthopterans o Grasshoppers and crickets o Tough, leathery forewings. o Most of them are plant feeders and some are pests. o Many species sing. Lepidopterans o Butterflies and moths o Big wings o Body and wings covered with scales o Proboscis often coiled.
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Ecol 130 Exam 2 Study Guide 2 o Long, antennae. o Some have auditory organs (tympana). Homopterans o Form is highly variable o Piercing-sucking mouthparts o Feed on plants 4. Which are the most common scorpions of the Sonoran Desert and how do you tell  them apart? Bark scorpion o Orients upside down  (people get stung picking up rocks). o Often found in houses,  especially on the edge of town (get trapped in sinks and bathtubs, found on walls and ceilings) Stripe tailed scorpion o About 2 inches long. o Sturdy medium sized Giant hairy scorpion. o Biggest in the USA: 6 inches! 5. What are vinegaroons? uropygid , commonly known as a whip scorpion , is an invertebrate animal belonging to the former order "Uropygi" in the class Arachnida , Arthropoda . When agitated they can spray a secretion of acetic acid . carnivorous , nocturnal hunters feeding mostly on insects and millipedes 6. What are Velvet ants? Velvet ants – actually wasps – get their name from the hairs that cover their body and because they resemble ants. The flightless females, which are often encountered while wandering on the ground, especially resemble ants. Velvet ants are active during the day Occasionally large aggregations form for courtship and mating. One grouping in
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Ecol 130 Study Guide - Ecol 130 Exam 2 Study Guide 1. How...

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