Exam 2--1998 Entomology 105--Insects and People
Ent. 105 Name _______________________
Second hour exam
April 3, 1998

1. Name two orders in which all members are carnivorous:
a
b.

2. Provide an example of an insect predator that can kill and eat vertebrate prey:

3. In which of the following orders are parasitoids NOT found?
a. Hymenoptera
b. Odonata
c. Diptera

4. What is the historical significance of the vedalia beetle, Rodolia cardinalis?


5. In what order are most of the prey species of Coccinellidae, Syrphidae, and Chrysopidae found?
a. Diptera
b. Neuroptera
c. Homoptera
d. Coleoptera

6. In what country are mopane worms consumed?
a. Thailand
b. Mexico
c. South Africa
d. Japan

7. True or false: According to the Old Testament, termites are kosher.

8. Certain primates produce ____________, an enzyme that allows them to digest insect exoskeleton.

9. What is the "efficiency of conversion of ingested food"?
a. the ratio of food consumed to weight gained
b. the ratio of weight gained to food taken in
c. the ratio of price of food to price of meat
d. the ratio of essential amino acids to nonessential amino acids

10. If you have allergies to dust, why shouldn't you eat insects?


11. Classify the following as either cryptic, homotypic, or aposematic:
a. heliconiine butterfly
b. stick insect
c. peppered moth
d. thorn bug

12. Define "thanatosis"--

13. Provide one example of an insect that sequesters defensive compounds from its hostplant and name the compounds sequestered
insect--
compound--

14. What is the active component of extracts of Lytta vesicatoria?
a. isobutyric acid
b. quinones
c. formic acid
d. cantharidin

15. Describe two ways insects can be used to treat diseases or injuries without swallowing them:
a
b.

16. Bee venom is used widely in the treatment of:
a. arthritis
b. Alzheimer's disease
c. stroke
d. cancer

17. What is maggot therapy?


18. Describe one entomological phenomenon that Charles Darwin used to illustrate the action of natural selection:


19. A change in a gene, either in DNA sequence or location, is a(n) ______________.

20. What is the scientific name of the "fruit fly" or vinegar fly most widely used in genetic studies?
a. Drosophila pseudoobscura
b. Drosophila hydei
c. Drosophila melanogaster
d. Drosophila willistoni

21. Mendel's law of ________________________ states that different factors are inherited independently of one another; his law of _________________ states that alternative forms of a particular factor remain discrete during the reproductive process.

22. What does "PCR" stand for?


23. What concept is associated with geologist Charles Lyell?
a. law of filial regression
b. theory of natural selection
c. uniformitarianism
d. arithmetic growth of food supply

24. Name two orders in which all immature stages are aquatic:
a.
b.

25. Name two aquatic insects with back legs that are elongate, flattened, and equipped with long fine hairs:
a.
b.

26. True or false: The gas present in highest concentration in a physical gill is nitrogen.

27. Where would you be most likely to find bloodworms?
a. in a sewage lagoon
b. in a clear, fast-moving mountain stream
c. in a salt marsh
d. in the circulatory system of a vertebrate

28. Name two orders popular with flyfishermen:
a.
b.

29. Drakes, duns, and humpbacks are flies based on insects in which order?
a. Trichoptera
b. Plecoptera
c. Ephemeroptera
d. Neuroptera

30. What is meant by "catch and release"?


31. What is the title of the classic flyfishing treatise written by Izaak Walton?
a. A Treatyse of Fysshinge with an Angle
b. The Compleat Angler
c. Secrets of Angling
d. The Flyfisher's Entomology

32. Name an order of insects with species that are ectoparasitic in immature and adult stages:


33. True or false: Mycetomes are frequently found in species that are parasitic in all life stages.

34. Provide an example of an arthropod parasitic on another arthropod:

35. Identify two aspects of vertebrate blood that make it less than ideal as food for insects:
a.
b.

36. Where would you expect to find the mite Demodex follicularum?


37. One of the adaptations for life as an ectoparasite includes backwards-pointing spines at strategic locations on the body. How do these spines benefit a parasitic insect?

38. To what family do mosquitoes belong?

39. Species in genus Aedes are principal vectors of
a. malaria
b. yellow fever
c. typhus
d. plague

40. What is thought to be the way that Aedes albopictus was introduced into the U.S. from Japan?

41. The man who headed the US Army medical team that investigated causes of yellow fever transmission was
a. Benjamin Rush
b. Carlos Finlay
c. William Crawford Gorgas
d. Walter Reed

42. Yellow fever is caused by a
a. bacterium
b. virus
c. protozoan
d. rickettsia

43. Species in the genus _____________ are vectors of malaria.

44. Is the mosquito or the human a definitive host for Plasmodium?

45. Which life stage of Plasmodium is found only in the mosquito?
a. microgametocyte
b. ookinete
c. sporozoite
d. merozoite

46. Approximately how many cases of malaria are reported every year worldwide?
a. 200,000
b. 2,000,000
c. 20,000,000
d. 200,000,000

47. The man who proved mosquito transmission of malaria by identifying the presence of sporozoites in the salivary glands of the mosquito was a British physician named _______ __________.

48. Plasmodium is a
a. bacterium
b. virus
c. protozoan
d. nematode

49. What do larval fleas eat?


50. The common name of Xenopsylla cheopis is
a. human flea
b. cat flea
c. Oriental rat flea
d. chigoe

51. Yersinia pestis is a
a. bacterium
b. virus
c. protozoan
d. nematode

52. The three forms of plague are
a.
b.
c.

53. Why was bubonic plague known as the Black Death?

54. What contribution did Charles Rothschild make with respect to understanding the nature of plague?


55. Which morphological characteristic DOES NOT characterize lice?
a. heavy sclerotization
b. reduced sensory apparatus
c. winglessness
d. laterally flattened

56. What is a nit?

57. Typhus is caused by
a. virus
b. nematode
c. bacterium
d. rickettsia

58. Name a disease other than typhus that is vectored by lice.

59. True or false: Head lice have not yet been shown to be resistant to insecticides.

60. True or false: Hemimetabolous and holometabolous insects are equally well represented in the dung insect community.

61. Which two of the following orders contain many coprophagous species?
a. Coleoptera
b. Plecoptera
c. Hymenoptera
d. Diptera

62. Among the odor components of dung to which coprophagous insects orient is
a. cholesterol
b. bombykol
c. menthol
d. skatole

63. Describe a feature of Scarabaeus sacer that may have led the ancient Egyptians to associate this insect with the sun.

64. Due to its dungfeeding habits, the house fly has been implicated in the transmission of
a. typhoid fever
b. plague
c. yellow fever
d. relapsing fever

65. Correct this sentence: Most of the truly necrophagous insects are in the orders Coleoptera and Trichoptera.

66. Larvae in the family Calliphoridae (order _________) can break down __________, the principal constituent of connective tissue in carrion.

67. What insects are you most likely to find in a corpse that is completely dry and in the latest stage of decomposition?

a. hister beetles and silphids
b. blow flies
c. tineid and dermestid larvae
d. flesh flies

68. Provide an example that proves this statement false: All species found in carrion are necrophagous.

69. Provide an example of forensic entomology that does not involve estimation of post-mortem interval.

70. List two types of biological control agents that are readily available to the home gardener:
a.
b.

71. Circle all of the nutritional attributes that apply to insects as food for humans:
a. good source of protein
b. high in minerals and vitamins
c. high in salt
d. low in cholesterol

72. Classify the following as either primary (P) or secondary (S) defense:
a. osmeterial eversion
b. reflex bleeding
c. stinging
d. crypsis

73. Match the insect product with its pharmacological activity


a. formic acid1. rubifacient
b. diamphidiatoxin2. vesicant
c. cantharidin3. neurotoxin

74. While the _____________ is the genetic make-up of an organism the ____________ is the physical appearance of the organism.

75. Provide an example of an arthropod involved in
a. dermatosis
b. canthariasis
c. scolechiasis