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BROWN RECLUSE PHE 02
genus
Loxosceles spp.
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BROWN RECLUSE PHE 02
common genus species
- Loxosceles rufescens
- Loxosceles reclusa
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BROWN RECLUSE PHE 02
mouthparts
chelicerae
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BROWN RECLUSE PHE 02
occurs primarily in the STATES
southeastern and central United States.
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BROWN RECLUSE PHE 02
typically found indoors in warm, dry, undisturbed areas such as
- closets, attics, basements, storage areas, utility rooms,
- heated garages, lofts of feed mills, storerooms of broiler
- houses, and heated warehouses.
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BROWN RECLUSE PHE 02
When mature, Loxosceles reclusa females are
7e12 mm in body length but may look much larger
because of their
long legs.
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BROWN RECLUSE PHE 02
The males are slightly smaller, have BLANK than the females
smaller, have longer legs than the females
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BROWN RECLUSE PHE 02
males...are easily recognized by their B_ P_
bulbous pedipalps.
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BROWN RECLUSE PHE 02
web... rather BLANK which continues to grow in thickness as
new silk is laid down.
irregular, nondescript tangle of silken strands,
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BROWN RECLUSE PHE 02
web... rather irregular, nondescript tangle
of silken strands, which continues to grow in thickness as
BLANK
new silk is laid down.
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BROWN RECLUSE PHE 02
When food is scarce, L. reclusa will leave the web at night to
roam in search of prey. It is under such circumstances that they
are most likely to come in contact with humans.
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BROWN RECLUSE PHE 02
Despite common misperceptions, 90% of brown recluse bites are of
minor incidence and self-healing and involve only inflammation
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BROWN RECLUSE PHE 02
Most encounters occur either at night when a person
- rolls onto a recluse spider in bed or when putting on clothes or
- foot-wear into which the spider has crawled.
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BROWN RECLUSE PHE 02
Often the victim is not aware of the bite until
2-3 hours later, whereas in other cases it may be immediately felt as a stinging sensation.
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BROWN RECLUSE PHE 02
bite... usually followed by intense local pain with the
formation of a
small blister at the bite site.
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BROWN RECLUSE PHE 02
venom is highly
cytotoxic, killing any cells it contacts.
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BROWN RECLUSE PHE 02
In more severe cases, the result is
necrosis of tissues and formation of an ulcer
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BROWN RECLUSE - FIELD GUIDE
_ marking on top of the cephalothorax
dark violin/fiddle-shaped
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BROWN RECLUSE - FIELD GUIDE
dark violin/fiddle-shaped marking on top of the _
cephalothorax
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BROWN RECLUSE - FIELD GUIDE
Of the 11 species recognized, the NUMBER listed under
representative species below are of public health importance.
6
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BROWN RECLUSE - FIELD GUIDE
Immatures very similar to adults except for being _ and slightly paler.
smaller
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BROWN RECLUSE - FIELD GUIDE
Immatures very similar to adults except for being smaller and slightly _
paler
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BROWN RECLUSE - FIELD GUIDE
The female spins an _ web in undisturbed areas
irregular
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BROWN RECLUSE - FIELD GUIDE
The web is _ _ to ensnare prey, but mostly as a retreat for the spider.
NOT USED
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BROWN RECLUSE - FIELD GUIDE
The web is not used to ensnare prey, but mostly as a _ for the spider.
retreat
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BROWN RECLUSE - FIELD GUIDE
_ and _ brown recluse spiders can inject venom
male and female
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Injection of their venom may produce _
or dead tissue, resulting in an ulcerating type of sore.
necrosis
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BROWN RECLUSE - FIELD GUIDE
Injection of their venom may produce necrosis
or dead tissue, resulting in an _ type of sore.
ulcerating
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BROWN RECLUSE - FIELD GUIDE
bite is usually not _, but it may produce an
immediate stinging sensation followed by
intense pain or this reaction may be delayed for 6-8 hours.
felt
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BROWN RECLUSE - FIELD GUIDE
bite is usually not felt, but it may produce an
immediate _ sensation followed by
intense pain or this reaction may be delayed for 6-8 hours.
stinging
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BROWN RECLUSE - FIELD GUIDE
bite is usually not felt, but it may produce an
immediate stinging sensation followed by
_ pain or this reaction may be delayed for 6-8 hours.
intense
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BROWN RECLUSE - FIELD GUIDE
bite...A small _ usually appears and
the surrounding bite area becomes swollen.
blister
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BROWN RECLUSE - FIELD GUIDE
bite...A small blister usually appears and
the surrounding bite area becomes _
swollen
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BROWN RECLUSE - FIELD GUIDE
bite...Symptoms include _,
fever, and difficulty in sleeping
restlessness
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BROWN RECLUSE - FIELD GUIDE
bite...Symptoms include restlessness,
_,and difficulty in sleeping
fever
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BROWN RECLUSE - FIELD GUIDE
bite...Symptoms include restlessness,
fever, and difficulty in _
sleeping
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BROWN RECLUSE - FIELD GUIDE
bite...The killed tissue gradually sloughs away during the
next 10-14 days, leaving an open _ and
possibly exposing the underlying muscles and/or bone
ulcer
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BROWN RECLUSE - FIELD GUIDE
bite...The killed tissue gradually sloughs away during the
next 10-14 days, leaving an open ulcer and
possibly exposing the underlying _
muscles and/or bone
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BROWN RECLUSE - FIELD GUIDE
bite...Healing is very _ and
usually takes several weeks,
resulting in dense scar tissue
slow
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BROWN RECLUSE - FIELD GUIDE
bite...Healing is very slow and
usually takes _ _,
resulting in dense scar tissue
several weeks
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BROWN RECLUSE - FIELD GUIDE
bite...Healing is very slow and
usually takes several weeks,
resulting in dense _ _
scar tissue
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BROWN RECLUSE - FIELD GUIDE
bite.... In severe cases, _ _ may be required
plastic surgery
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BROWN RECLUSE - FIELD GUIDE
bite.... An antivenom has been developed but
it is NOT clinically available
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bite.... not all brown recluse bites result in
ulcer formation and that bites of
other arthropods may cause similar reactions in people.
ulcer
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BROWN RECLUSE - FIELD GUIDE
bite.... not all brown recluse bites result in
ulcer formation and that bites of
other arthropods may cause
similar reactions in people.
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BROWN RECLUSE - FIELD GUIDE
bite.... _ should not be left on the floor,
or they must be shaken out before wearing
Clothes and shoes
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