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Spiders Pest Control Facts and Prevention
GD Pest Control Pvt.Ltd. services all over Maharashtra.
Preventive measures for all pests you can take are
:
- Do not leave piles of clothing, papers or other
miscellaneous things laying around
- Regular cleaning and maintenance of your home
or business
- When cleaning, check under carpet edges and baseboards
- Do not have dirty dishes piled up and sitting for long
periods of time, especially not in old water
- Especially in hot weather, put your food scraps
in plastic before disposing of them
- Schedule regular pest control maintenance
- If you see one pest or insect, chances are you are not
seeing rest. A call to GD Pest Control should be made to schedule an
appointment as soon as possible.
Spiders Pest Control and Information
 Spiders
(Class Arachnida)
Characteristics
- Spiders have eight legs, 4 pairs
- Most spiders have 6 - 8 simple eyes in various arrangements
- All spiders have a pair of jaw-like structures,
the chelicerae, each of which ends in a hollow fang through which venom can be injected
- Spiders have 2 body regions : a cephalothorax (fused
head and thorax) and an abdomen, which are joined by a narrow waist
- The tip of the abdomen has a group of small fingerlike
spinnerets, which produce silk
Spider Bites
- There are only 2 species of spiders that are dangerous
to humans, the brown recluse spider and the black widow
- The sac spider species (clubionids) are suspect for
most spider bites, their venom is cytotoxic - causes the tissue around the bite
to die
- The vast majority of spiders are harmless to humans
- Usually there is no more than a slight swelling of
the bitten area, most spiders fangs are too small or weak to puncture skin
- Spiders don't bite unless they are pressed against skin
or held, although some actively will protect their egg sacs and their young
Habitat
- Some like damp places such as basements, crawl spaces
and other damp parts of buildings
- Others like dry, warm areas such as subfloor air vents,
upper corners of rooms and attics
- They will hide in dark areas
Diet
- Spiders are predators and feed on living prey, mostly
other insects
- They produce a venom that is poisonous to their normal
prey of insects, mites and other anthropods
- Venom is injected through the hollow fangs to immobilize
the prey and begin the digestion process, and then they suck the digested liquid
food
- Some species of spiders build webs to trap their prey
while other spiders will actively hunt
- Passive hunters are spiders that lay and wait for their
prey rather than searching for it
Reproduction
- Spiders produce egg sacs which are laid either in
a web, attached to a surface or carried within the female
- Spiders may produce several egg sacs, containing several
hundred eggs
- A spider grows by molting, or shedding its skin,
usually 4 - 12 times before reaching maturity
- In many species, the male may wander off in search
of a mate
- Some species of spiders may live for many years, but commonly,
spiders only live for one season
Other Facts
- Only 2 species of spiders are harmful to humans
- Sanitation is the best control and preventative measure
Spider Relatives - Class Arachnida
- Close relatives are found in 10 orders and
include scorpions, psuedoscorpions, mites, ticks and daddy longlegs
- Daddy longlegs are commonly confused as spiders, but are
actually not spiders but belong to the family Opiliones
Web Building Spiders Pest Control and Information
Web Builders
- Their web designs may or may not be elaborate
- Webs are built to trap prey
Cobweb Spiders Pest Control Information
 Cobweb Spiders (Theriididae)
- These spiders typically build an irregular web in
sheltered sites in or outdoors
- The outer sticky threads of a web entangle insect prey
- Some species build a retreat within the web and hide there
during the day, and the spider hangs upside down from the web during the night
Characteristics
- These spiders include the widow spiders
- They have a rounded globular abdomen (black widow spider
shape)
- The common house spider (Achaearanea) is about 1/3
inch long (female)
- The house spider is usually gray to brown, and it's
spherical abdomen has several dark stripes
- They require high humidity and plentiful prey, typically
found in basements, cellars, crawl spaces and outbuildings
- This species will abandon webs that do not attract prey and
constructs new webs until it finds a productive site
Nursery Web Spiders Pest Control
 Nursery Web Spiders
Characteristics
- These spiders are very large, they can have a leg
span of 3 inches
- Many are earth tone colored
- Many can run on the surface of water and, if chased, can
dive and stay immersed for some time
Habitat
- Many species of this spider are found near lakes and streams,
but can be found indoors in moist areas
Diet
- These spiders hunt night and day for aquatic insects
and even small fish
Reproduction
- The sole reason for this spiders web is for egg
sacs
- The female uses her mouthparts to carry the sac under
her body until her young are ready to emerge
- Then the female spider will fasten the egg sac to
some leaves and encloses it with a "nursery" until the young spiders are ready to
emerge
- She stands guard to protect her young
Orb Weaver Spiders Pest Control
Orb Weaver Spiders
- These spiders build the familiar circular, flat,
elaborate web to trap flying insects, and are usually constructed outdoors
- These spiders have poor vision and locate prey by feeling
the vibration and tension of threads in their webs, and use silk to wrap their victim
Characteristics
- Many species of orb spiders are large (1 inch),
but others are quite small (.1 inch)
- Despite their formidable appearance, these spiders
are not dangerous
- Some may bite if they are handled
Reproduction
- Female carry their large, globular egg sac attached
to spinnerettes under the abdomen
- After hatching, the hatchlings will crawl onto their mothers
back and stay there for several days before dispersing
Wolf Spiders
- Wolf spiders can alarm people because of their size
and rapid movements
- These spiders are not aggressive, but may bite if handled
Jumping Spiders Pest Control and Information
 Jumping Spiders
Characteristics
- These spiders are 1/8 - 3/4 inch long, very hairy
and short legged
- 2 of their 8 eyes are very large, and have the keenest
eyesight of all spiders
- Many species have patches of bright colored or iridescent
scales
- Some jumping spiders are black with spots of orange
or red and are at times confused with black widow spiders
- Jumping spiders got their name because of their
jumping ability, they can jump many times their own length and walk backwards
- They make quick, sudden jumps to capture prey or avoid a
threat
Habitat
- Most jumping spider species live outdoors, but can
establish themselves indoors, usually by windows and doors where there prey is most
likely
- These spiders are active during the day and prefer sunshine
Diet
- These spiders feed on insects
Passive Hunter Spiders Pest Control and Information
Passive Hunters
- These spiders lay and wait for their prey rather
than search for it
- When their prey approaches, these spiders may jump
or pounce to seize it
- Crab spiders, tarantulas, and many other spiders use this
technique
 Crab Spiders
Characteristics
- These spiders have a flattened body and hold their
legs at right angles
- They can walk forward, backward or sideways
- Those that hunt on the ground are colored with shades
of gray, brown or black, while those that frequent flowers are bright red, yellow,
orange, white or green
Spiders Pest Control Measures and Prevention
Spider Management
Inspection: A thorough inspection outside the building & its parameter & with in the building of sentry points, location of harborage areas must be undertaken to find out pest species. Night inspection may be needed due to nocturnal habitant of several spiders.
Non-Chemical Control :
Sanitation & housekeeping will go a long way in keeping spiders away. It should include to dust & vacuum areas such as closets, attics, storage places & around windows, room corners, and ceiling, underneath furniture’s & behind wall hangings. A six monthly treatment of this type is beneficial. Premises should be cleared of trash, boxes, piles of old clothing’s and other material that provide protection for spider and their webs. Doors and windows should be tight fitting as these may provide passage to young spiders which are very small in size.
Mechanical & glue traps are useful to determine this spiders types & also their Control.
Chemical Control :
When applied appropriately spiders are susceptible to insecticides like Organophosphates, Carbamates & Synthetic Pyrethroids.
Dust formulation at entry points cracks & cervices will be effective for the control of web building spiders as they chew up the old web & consume the silk which when dusted will affect the animal. Dust based on Lindane, Pyrethrum & silica acrogels are useful.
Space sprays preferably residual are useful in confined areas & should cover windows & doorframes, room & roof corners, storage spaces etc.
An effective control programme will depend on careful observation of spider’s habitat & integration of non-chemical & chemical methods.
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