Comprehensive Medical Entomology: Vectors, Diseases, and Control Methods

Malaria is not endemic to the United States, how did malaria enter the U.S.?

From slaves being carried to the U.S. from Africa.

MV / 1

What insect vectored disease is described by these symptoms

high fever, headache, severe backache, vomiting and

jaundice?

Yellow fever

MV / 2

What disease do the following mosquitoes vector Culex tarsalis, Culex pipiens pipiens, and Culex pipiens

quinquefasciatus?

St. Louis encephalitis, WNV

MV / 3 / 1993

What is the generic and specific names of the vectors of African sleeping sickness?

Glossina palpalis and/or Glossina morsitans

MV / 4

Name one of the diseases which is transmitted by Phlebotomus?

Sand fly fever, carrion's disease, or leishmaniasis

MV / 5

Swollen lymph nodes resulting from an infection of Yersinia pestis, are called what?

Buboes

MV / 6

What is the reservoir of louse-borne typhus?

Humans

MV / 7

What is the causal agent of Rocky Mountain spotted fever?

Rickettsia rickettsii

MV / 8

What are the vectors of Rocky Mountain spotted fever?

Ticks, Brown dog and Wood

MV / 9

What disease does the mosquito, Toxorhynchites rutilus vector?

This mosquito does not vector any disease and is a predator of other mosquitoes in the larval stages.

MV / 10

What genera of mosquitoes have larvae that attach themselves to plants to breathe?

Coquillettidia and Mansonia

MV / 11

What is the genus and species of the primary vector of dengue hemorrhagic fever?

Aedes aegypti, yellow fever mosquito

MV / 12

What is the primary reservoir of encephalitis in the United States?

Birds

MV / 13 / 1990

What disease has Winterbottom's sign as a symptom

African sleeping sickness.

MV / 14 / 1989

What ectoparasite must feed on a pregnant host before it can reproduce?

Rabbit flea, Spilopsyllus cuniculi

MV / 15 / 1995

The nematode which causes onchocerciasis or river blindness in Africa is vectored by what insect genus?

Simulium, black flies

MV / 16 / 1992

Which sex of tabanids suck blood?

Females

MV / 17

Name the sources of female tabanid nutrition.

Blood meals and honeydew and nectar (carbohydrates)

MV / 18

Why do hornflies prefer the darker areas on black and white cattle?

The seek a temperature which is compatible to their needs and dark spots are warmer.

MV / 19

What is the term which defines when an organism is present in the host egg and passed on to the succeeding

generation?

Transovarial transmission

MV / 20

What is the proper way to store and preserve Mallophaga?

In 70% alcohol, or slide mount.

MV / 21 / 1992

What disease does the mosquito, Anopheles, transmit?

Malaria

MV / 22

In what stage is the tsetse fly born in?

Third instar larvae

MV / 23 /

What is the genus and species name of the horsefly that is completely black?

Tabanus atratus

3

In her lifetime, what is the average number of young that a female tsetse fly will bear?

8--10

MV / 25

what order of insects vectors of Chagas disease?

Hemiptera

MV / 26 / 1992

If a patient in a doctor's office was diagnosed as having, Morbus errorum or Vagabond's disease, what would this

diagnosis be referring to?

Chronic condition of lice which has caused a hardening of the skin.

MV / 27 / 1992

What are the larvae of mosquitoes commonly referred to as?

Wigglers

MV / 28

If one took a dip sample from an old tire and found tumblers in the sample, what would you be referring to?

Pupae of mosquitos

MV / 29

What family of insects contains the vectors of the diseases, malaria, dengue and yellow fever?

Culicidae

MV / 30

Dirofilaria immitis is a serious problem of man's best friend. What is it commonly called and what group of insects

vectors this organism?

Heartworm; mosquito

MV / 31

Rabbit fever also known as tularemia is transmitted by two types of arthropods. Name these two types of arthropods.

1) Tabanids or deer flies (mechanical) and 2) Ixodid ticks (biological vector) (and mosquitoes in some regions)

MV / 32 / 1993

What is the common name of Gasterophilus intestinalis?

Horse botfly

MV / 33

Who is credited for proving in 1891 that Texas cattle fever is vectored by ticks?

Smith and Kilbourne

MV / 34

Military surgeons have observed that wounds infested with maggots often heal better than uninfested wounds. What

family of insects would be infesting these wounds?

Calliphoridae

MV / 35

What is the scientific name of the fish which is well known as a biological control agent of mosquitos?

Gambusia affinis

MV / 36

What chemical is the active ingredient in the majority of mosquito repellents on the market today?

Medical and Veterinary Entomology Question Bank

4

Deet N,N- diethyl M toluamide

MV / 37

What is the visible characteristic which can be used to separate male and female mosquito adults?

Males generally have plumose antennae; females have few short hairs.

MV / 38

What is the common name of insects in the genus, Culicoides?

Punkies, no-seeums-

MV / 39

What is the preferred site of oviposition by the human body louse?

In seams of clothing

MV / 40

All members of what suborder of insects are parasites of mammals?

Anoplura

MV / 41 / 1995

If you had a case of mechanized dandruff, what suborder of insects would be involved?

Anoplura

MV / 42

To what family does the primary screwworm belong?

Calliphoridae

MV / 43

What do the following Lepidoptera have in common, Puss caterpillar, crinkled flannel moth, flannel moth, Io moth

and saddleback caterpillar.

The larvae have vessicating or stinging hairs (Urticating hairs)

MV / 44 / 1991

In centipedes, what structure makes up the "fangs"?

Modified legs of the first body segment.

MV / 45

What insect injures more humans every year than any other insect?

Honeybee

MV / 46

In what geographic area would one expect to find human botflies, Dermatobia hominis?

Tropical areas of Mexico and South America

MV / 47 / 1992

What insect is most often associated with myiasis in humans?

Primary screwworm, Cochliomyia hominivorax

MV / 48 / 1995

In what two states would one be most likely to contract rabbit fever?

Arkansas and Missouri

MV / 49

Medical and Veterinary Entomology Question Bank

5

In what season would one expect to find the most cases of epidemic typhus?

Winter when it is very cold and people always are wearing clothes and don't bathe as often.

MV / 50

Anthroponosis refers to diseases where the infectious agent is transmitted from human to human by its vector. Name

such a disease.

Malaria, onchoceriasis, epidemic typhus

MV / 51 / 1992

What term is given to the agent that transmits a disease organism from one host to another?

A vector

MV / 52

What is the genus of fish known as mosquito fish?

Gambusia

MV / 53

What genus of fungi is a potential biological agent of mosquito larvae?

Coelomocytes

MV / 54

To which family do the punkies and no-see-ums belong?

Ceratopogonidae

MV / 55

To which family do the vectors of Leishmaniasis in Africa and South America belong?

Psychodidae, Phlebotominae

MV / 56 / 1990

To which family do sheep keds belong?

Hippoboscidae

MV / 57

To which family do hard ticks belong?

Ixodidae

MV / 58

To which family do soft ticks belong?

Argassidae

MV / 59

What term refers to the invasion of living tissue by dipterous maggots?

Myiasis

MV / 60 / 1992

Epidemic typhus is vectored by what general group of animals?

Lice

MV / 61 / 1991

Murine typhus is vectored by what general group of animals?

Medical and Veterinary Entomology Question Bank

6

Fleas

MV / 62

What mammal in Texas has recently been reported to harbor plague?

Armadillos

MV / 63

To which phylum do the organisms Leishmania and Trypanosoma belong?

Euglenozoa

MV / 64

What common name is given to American Trypanosomiasis?

Chagas' disease

MV / 65

What arbovirus currently infects the most people worldwide?

Dengue

MV / 66

What does `arbo' in arbovirus refer to?

Arthropod borne

MV / 67

Trombiculid mites are vectors in what disease of man in SE Asia?

Scrub typhus

MV / 68

What is the genus of mite that lives in the skin pores of man?

Demodex

MV / 69

What term describes a mosquito that requires a blood meal prior to oviposition?

Anautogenous

MV / 70

What is the scientific name and family of the human flea?

Pulex irritans, Pulicidae

MV / 71

What is the scientific name of the sticktight flea found on poultry?

Echidnophaga gallinacea

MV / 72

What is the major way in which animals become parasitized by tapeworms?

Ingestion of fleas containing tapeworms

MV / 73

Name the structures found in some hard ticks which are more or less rectangular areas, separated from adjacent ones

by grooves, along the posterior sub-marginal area of the dorsum?

Festoons

MV / 74 / 1991

Medical and Veterinary Entomology Question Bank

7

Give the scientific names of the 2 major vectors of Texas Cattle Fever?

Boophilus annulatus and B. microplus (now is the genus is Rhipicephalus)

MV / 75 / 1991

Where is the major location in which Demodex folliculorum can be found?

Hair follicles and sebaceous glands of man

MV / 76

Though Lepidoptera are not considered medically important pests a few species do in fact cause some irritation, how

do they do this?

Feed on secretions from eyes.

MV / 77

What is the scientific name of the coleopterous parasite of beavers?

Platypsyllus castoris

MV / 78

What is the disease organism transmitted by Panstrongylus megistus?

Trypansoma cruzi - Chagas Disease

MV / 79

Besides feeding from an infected host name another way in which assassin bugs may obtain the Chagas disease

organisms?

Through "cannibalism" or feeding of nymphs on engorged infected nymphs without detriment of the latter.

MV / 80

What was a major arthropod-borne- disease that resulted in great losses for Napoleon on his campaign to Russia?

Epidemic typhus fever

MV / 81

Name the disease and its primary vector that resulted in the deaths of 1/4 of the population of London in the 1600's?

Plague,- Xenopsylla cheopis

MV / 82

What is the scientific name of the biting cattle louse and in what family is it found?

Bovicola bovis, Trichodectes

MV / 83

What is the common name of Hypoderma bovis and what family is it found in?

Northern Cattle grub, Oestridae (heel flies, warble flies, bomb flies, or gad flies)

MV / 84

Give the 2 ways in which the cattle tick, Boophilus (Ripicephalus) annulatus obtains the causative agent of Texas

Cattle fever?

1) Transovarial transmission 2) Through sucking blood

MV / 85

Mosquitoes are the only natural vectors of what 3 pathogenic agents that affect man?

Malaria, Dengue Fever and Yellow Fever

MV / 86

Medical and Veterinary Entomology Question Bank

8

What tropical American fly depends on various bloodsucking arthropods to transport its eggs to the host?

Human Bot Fly, Dermatobia hominis

MV / 87 / 1993

What three species of lice infest man?

Crab Louse- Pthirus pubis, Body Louse Pediculus h-. humanus, and Head Louse Pediculus h. capitis-

MV / 88

What is the common name of the wall louse or the mahogany flat?

Cimex lectularius,- Bed bug

MV / 89

Red bugs or chiggers feed through what structure which is found in the host's skin?

Stylostome or histiosiphon

MV / 90

Where are the larvae of Melophagus ovinus, sheep ked, found?

Inside the female

MV / 91

Where do the larvae of eye gnats (Hippelates spp.) develop?

Cultivated soil

MV / 92 / 1992

Where do the larvae of Tabanidae occur?

In aquatic or marshy environments

MV / 93

What is the common name for Tunga penetrans?

Jigger or Chigoe or chique or sand flea

MV / 94 / 1990

What is the term used to describe a plague infected flea which has an obstruction at the entrance to the stomach?

Blocked flea

MV / 95

What term is used to describe plague which is limited to fields or open country rather than in urban areas?

Sylvatic or campestral

MV / 96

Blue tongue virus is transmitted to sheep and cattle by flies in which family?

Ceratopogonidae

MV / 97 / 1995

Members of what genus are known as boreal or snow pool mosquitoes?

Aedes

MV / 98

What pesticide above all others was used as an instrument to rid expansive areas of the world from the ravages of

malaria?

Medical and Veterinary Entomology Question Bank

9

DDT

MV / 99