Bugs and People

ENT100; Contains important definitions

Classification

The arrangement of things into groups sharing certain specified similarities

Historia Animalium

• Aristotle

• classified bugs as winged or wingless

• separated butterfly and caterpillars

Who lost army to insect related diseases?

Alexander the Great

Historia Naturalis

• Pliny the Elder

• Categorized all flying insects with bats and birds

• Terrestria or Aquatica

Insect Body Parts

-Head

-Thorax

-Abdomen

Apoda

without feet

Pedata

with feet

Who created the classification system of Binomial Nomenclature

Carlos Linnaeus

Arthropod

-Phylum of invertebrates which includes insects, arachnids, and crustaceans

-Arthro=joint , Pod=feet

Taxonomy

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Arachnida

-Mites, Ticks, Spiders, Scorpions

-2 body parts

-8 Legs as adults

-Cephalothorax and abdomen

-Chelicerae (fangs/mouth)

-450,000 species

Cephalothorax

-head and thorax fused

Class Chilipoda

- Centipedes

-1 pair of legs for every something in their body, 2 legs

-mouth=poison claw

Class Diplopoda

-Two pairs of jointed legs, 4 legs

-Millipedes

Class Crustacea

-Malacostraca (crabs, lobsters, shrimp)

-Branchiopoda (water fleas, fairy shrimp)

-Ostracoda

-Maxillopoda (copepods and barnacles)

Class Insecta

-Largest Class

-Have 6 legs

-Antennae

• Usually with wings (2 or 4, some without) 

• Largest and most diverse group of animals on planet- around 80% 

• Over 1 million species described; estimated quadrillion individuals 

• Bite, irritate, bother, and are major transmitter of human and animal disease 

• Bilaterally symmetrically 

Red Bugs/Chiggers

-Cause an allergic reaction(read itchy bumps)

-DO NOT burrow under the skin

-Can theoretically be repelled by sulfur powder and nail polish

-Feed on cellular tissue

Scabies

-Caused by a mite that burrow under skin

-Sexually transmitted

-Itchy in moist places of body

-Lotion cure

Demodex Mites

-Harmless

-Live on in follicles and come out at night to reproduce

-Population can cause red rash

-Crawl into pores to lay eggs

-No anus

Protozoa

• Microscopic, single celled, can be transmitted (tx) by insects 

• Dysentery, trypanosomiasis, leishmaniasis, malaria 

Bacteria

• Microscopic, prokaryota (no nucleus) can be tx by insects 

• Plague 

• Fleas transmit plague bacteria 

Virus

• Microscopic, protein wrapped DNA/RNA, can be tx by insects 

• Yellow fever, WNV, Encephalitis, Hanta virus (rodents) 

Rickettsia

• Microscopic, intracellular invaders by ticks, fleas, mites 

• Typhus, spotted fever, trench fever and rocky mountain spotted fever 

Nematodes

-Microscopic roundworms

-Parasites in plants and animals

Slugs

• Gasthropod mollusk, hermaphroditic

Poikilotherms

-cold blooded organisms

-no internal temperature regulation

______, _____ and ______ are functions of ambient(relating to the immediate surroundings of something) temperature

Reproduction, development, and activity