Safety / Survival / Army Field Manuals / AFM 3-05.70
11-1. Insects, except centipedes and millipedes, have six legs; arachnids
have eight. All these small creatures become pests when they bite, sting, or
11-2. Although their venom can be quite painful, bee, wasp, and hornet stings
rarely kill a person who is not allergic to that particular toxin. Even the most
dangerous spiders rarely kill, and the effects of tick-borne diseases are very
slow-acting. However, in all cases, avoidance is the best defense. In
environments known to have spiders and scorpions, check your footgear and
clothing every morning. Also check your bedding and shelter. Use care when
turning over rocks and logs. See Appendix
D for examples of dangerous insects and arachnids.
11-3. You find scorpions (Buthotus species) in deserts, jungles, and
forests of tropical, subtropical, and warm temperate areas of the world. They
are mostly nocturnal. Desert scorpions range from below sea level in Death
Valley to elevations as high as 3,600 meters (12,000 feet) in the Andes.
Typically brown or black in moist areas, they may be yellow or light green in
the desert. Their average size is about 2.5 centimeters (1 inch). However, there
are 20-centimeter (8-inch) giants in the jungles of Central America, New Guinea,
and southern Africa. Fatalities from scorpion stings are rare, but do occur with
children, the elderly, and ill persons. Scorpions resemble small lobsters with
raised, jointed tails bearing a stinger in the tip. Nature mimics the scorpions
with whip scorpions or vinegarroons. These are harmless and have a tail like a
wire or whip, rather than the jointed tail and stinger of true scorpions.
11-4. The brown recluse, or fiddleback spider, of North America (Loxosceles
reclusa) is recognized by a prominent violin-shaped light spot on the back
of its body. As its name suggests, this spider likes to hide in dark places.
Though its bite is rarely fatal, it can cause excessive tissue degeneration
around the wound, leading to amputation of the digits if left untreated.
11-5. Members of the widow family (Latrodectus species) may be found
worldwide, though the black widow of North America is perhaps the most
well-known. Found in warmer areas of the world, the widows are small, dark
spiders with often hourglass-shaped white, red, or orange spots on their
11-6. Funnelwebs (Atrax species) are large, gray or brown Australian
spiders. Chunky, with short legs, they are able to move easily up and down the
cone-shaped webs from which they get their name. The local populace considers
them deadly. Avoid them as they move about, usually at night, in search of prey.
Symptoms of their bite are similar to those of the widow's—severe pain
accompanied by sweating and shivering, weakness, and disabling episodes that can
last a week.
11-7. Tarantulas are large, hairy spiders (Theraphosidae and Lycosa
species) best known because they are often sold in pet stores. There is one
species in Europe, but most come from tropical America. Some South American
species do inject a dangerous toxin, but most simply produce a painful bite.
Some tarantulas can be as large as a dinner plate. They all have large fangs for
capturing food such as birds, mice, and lizards. If bitten by a tarantula, pain
and bleeding are certain, and infection is likely.
CENTIPEDES AND MILLIPEDES
11-8. Centipedes and millipedes are mostly small and harmless, although some
tropical and desert species may reach 25 centimeters (10 inches). A few
varieties of centipedes have a poisonous bite, but infection is the greatest
danger, as their sharp claws dig in and puncture the skin. To prevent skin
punctures, brush them off in the direction they are traveling.
BEES, WASPS, AND HORNETS
11-9. Bees, wasps, and hornets come in many varieties and have a wide
diversity of habits and habitats. You recognize bees by their hairy and usually
thick body, while the wasps, hornets, and yellow jackets have more slender,
nearly hairless bodies. Some bees, such as honeybees, live in colonies. They may
be either domesticated or living wild in caves or hollow trees. You may find
other bees, such as carpenter bees, in individual nest holes in wood or in the
ground like bumblebees. The main danger from bees is the barbed stinger located
on their abdomens. When a bee stings you, it rips its stinger out of its abdomen
along with the venom sac, and dies. Except for killer bees, most bees tend to be
more docile than wasps, hornets, and yellow jackets, which have smooth stingers
and are capable of repeated attacks.
11-10. Avoidance is the best tactic for self-protection. Watch out for
flowers or fruit where bees may be feeding. Be careful of meat-eating yellow
jackets when cleaning fish or game. The average person has a relatively minor
and temporary reaction to bee stings and recovers in a couple of hours when the
pain and headache go away. Those who are allergic to bee venom have severe
reactions including anaphylactic shock, coma, and death. If antihistamine
medicine is not available and you cannot find a substitute, an allergy sufferer
in a survival situation is in grave danger.
11-11. Ticks are common in the tropics and temperate regions. They are
familiar to most of us. Ticks are small, round arachnids. They can have either a
soft or hard body. Ticks require a blood host to survive and reproduce. This
makes them dangerous because they spread diseases like Lyme disease, Rocky
Mountain spotted fever, encephalitis, and others that can ultimately be
disabling or fatal. There is little you can do to treat these diseases once they
are contracted, but time is your ally since it takes at least 6 hours of
attachment to the host for the tick to transmit the disease organisms. Thus, you
have time to thoroughly inspect your body for their presence. Beware of ticks
when passing through the thick vegetation they cling to, when cleaning host
animals for food, and when gathering natural materials to construct a shelter.
Always use insect repellents, if possible.