Geographic Range
Sassacus papenhoei's
range is in the Nearctic region, its most northern population is in Minnesota, but
it ranges as far south as Mexico. It has populations in both the eastern and western
United States.
Habitat
Sassacus papenhoei
can live in desert brush, alfalfa, cotton, upland prairie, and in meadows.
- Habitat Regions
- temperate
- Terrestrial Biomes
- savanna or grassland
- chaparral
- scrub forest
- Other Habitat Features
- agricultural
Physical Description
Sassacus papenhoei
is 5mm long, has a stout body with short legs, eight eyes, and is black with a greenish
or purplish iridescent shine. It's first pair of legs is noticeably larger than it's
other pairs of legs.
- Other Physical Features
- ectothermic
- bilateral symmetry
- Sexual Dimorphism
- sexes alike
Development
After hatching from an egg during summer, young
jumping spiders
may disperse through a process called ballooning where they jump into the air and
use a small silk line as drag. They immediately begin caring for themselves after
hatching and in a similar species juvenile spiders do not mature until spring of the
next year.
Reproduction
Sassacus papenhoei
creates a small silk tent under rocks or in plants that it uses to lay its eggs in
at the beginning of the summer. When the eggs hatch the young spiders disperse and
the mother may produce more egg sacs throughout the summer. In similar species of
jumping spider mating occurs in the spring after all of the juveniles have fully matured.
- Mating System
- polygynandrous (promiscuous)
Similar jumping spider species breed in the spring. The number of offspring per egg
sac is unknown. Females generally lay their egg sac in early summer and will continue
to lay eggs throughout the summer. Juvenile spiders are fully mature by next spring.
Hatched spiders are independent of their mother immediately.
- Key Reproductive Features
- iteroparous
- seasonal breeding
- gonochoric/gonochoristic/dioecious (sexes separate)
- sexual
- oviparous
- delayed fertilization
There is very little parental investment post-hatch within the
Sassacus papenhoei
species. Eggs are laid within a silken tent made by the female which provides some
protection before they are hatched. The female also stays with the eggs until they
hatch to protect them. Upon hatching young spiders are immediately independent and
disperse.
- Parental Investment
- no parental involvement
-
pre-fertilization
-
protecting
- female
-
protecting
-
pre-hatching/birth
-
protecting
- female
-
protecting
Lifespan/Longevity
Not much is known about
Sassacus papenhoei
as far as lifespan is concerned, but in similar species a one year life span is typical.
Behavior
Sassacus papenhoei
is a solitary species. It stocks its prey instead of catching it in a web. When it
sees something threatening it may actually approach and investigate it instead of
running and hiding.
- Key Behaviors
- terricolous
- saltatorial
- diurnal
- motile
- sedentary
- hibernation
- solitary
Home Range
Communication and Perception
Sassacus papenhoei
has some of the best vision of all of the arachnid classification. They can see some
colors along with a little bit of ultraviolet light. They use this vision to stalk
prey and identify mates.
- Communication Channels
- visual
- Perception Channels
- visual
- ultraviolet
Food Habits
Sassacus papenhoei
feeds primarily on smaller insects, however they will eat other spiders that are
smaller and will also steal kills from other spider's webs.
- Primary Diet
- carnivore
- Animal Foods
- insects
Predation
The color pattern adopted by the species mimics beetles which is a prey species, this
may help it when hunting. When presented with a predator this species may try and
scare the predator away by jumping towards it and waving its front legs.
Ecosystem Roles
Sassacus papenhoei
is a predator of other small insects and is prey for larger predators.
Economic Importance for Humans: Positive
There are no known benefits besides that of education and knowledge.
- Positive Impacts
- research and education
Economic Importance for Humans: Negative
There are no known costs involved with this species as it does not often inhabit homes
and is non-venomous.
Conservation Status
Sassacus papenhoei
has a wide range across the United States and is not endangered overall, however,
it is endangered in its most northern population in Minnesota. Controlled burns are
more meticulously planned than before in an attempt to conserve the species.
Additional Links
Contributors
Samantha Foltz (author), Minnesota State University Mankato, Robert Sorensen (editor), Minnesota State University, Mankato, Tanya Dewey (editor), University of Michigan-Ann Arbor.
- Nearctic
-
living in the Nearctic biogeographic province, the northern part of the New World. This includes Greenland, the Canadian Arctic islands, and all of the North American as far south as the highlands of central Mexico.
- native range
-
the area in which the animal is naturally found, the region in which it is endemic.
- temperate
-
that region of the Earth between 23.5 degrees North and 60 degrees North (between the Tropic of Cancer and the Arctic Circle) and between 23.5 degrees South and 60 degrees South (between the Tropic of Capricorn and the Antarctic Circle).
- tropical savanna and grassland
-
A terrestrial biome. Savannas are grasslands with scattered individual trees that do not form a closed canopy. Extensive savannas are found in parts of subtropical and tropical Africa and South America, and in Australia.
- savanna
-
A grassland with scattered trees or scattered clumps of trees, a type of community intermediate between grassland and forest. See also Tropical savanna and grassland biome.
- temperate grassland
-
A terrestrial biome found in temperate latitudes (>23.5° N or S latitude). Vegetation is made up mostly of grasses, the height and species diversity of which depend largely on the amount of moisture available. Fire and grazing are important in the long-term maintenance of grasslands.
- chaparral
-
Found in coastal areas between 30 and 40 degrees latitude, in areas with a Mediterranean climate. Vegetation is dominated by stands of dense, spiny shrubs with tough (hard or waxy) evergreen leaves. May be maintained by periodic fire. In South America it includes the scrub ecotone between forest and paramo.
- scrub forest
-
scrub forests develop in areas that experience dry seasons.
- agricultural
-
living in landscapes dominated by human agriculture.
- polygynandrous
-
the kind of polygamy in which a female pairs with several males, each of which also pairs with several different females.
- iteroparous
-
offspring are produced in more than one group (litters, clutches, etc.) and across multiple seasons (or other periods hospitable to reproduction). Iteroparous animals must, by definition, survive over multiple seasons (or periodic condition changes).
- seasonal breeding
-
breeding is confined to a particular season
- sexual
-
reproduction that includes combining the genetic contribution of two individuals, a male and a female
- oviparous
-
reproduction in which eggs are released by the female; development of offspring occurs outside the mother's body.
- delayed fertilization
-
a substantial delay (longer than the minimum time required for sperm to travel to the egg) takes place between copulation and fertilization, used to describe female sperm storage.
- saltatorial
-
specialized for leaping or bounding locomotion; jumps or hops.
- diurnal
-
- active during the day, 2. lasting for one day.
- motile
-
having the capacity to move from one place to another.
- sedentary
-
remains in the same area
- hibernation
-
the state that some animals enter during winter in which normal physiological processes are significantly reduced, thus lowering the animal's energy requirements. The act or condition of passing winter in a torpid or resting state, typically involving the abandonment of homoiothermy in mammals.
- solitary
-
lives alone
- visual
-
uses sight to communicate
- visual
-
uses sight to communicate
- carnivore
-
an animal that mainly eats meat
- insectivore
-
An animal that eats mainly insects or spiders.
- ectothermic
-
animals which must use heat acquired from the environment and behavioral adaptations to regulate body temperature
- bilateral symmetry
-
having body symmetry such that the animal can be divided in one plane into two mirror-image halves. Animals with bilateral symmetry have dorsal and ventral sides, as well as anterior and posterior ends. Synapomorphy of the Bilateria.
References
Cranshaw, W. 2010. "Colorado Insects of Interest: Jumping Spider" (On-line). wiki.bugwood.org. Accessed November 29, 2017 at https://wiki.bugwood.org/HPIPM:Jumping_Spider .
Ehmann, W. 2017. "Sassacus Papenhoei" (On-line). dnr.state.mn.us. Accessed November 08, 2017 at http://www.dnr.state.mn.us/rsg/profile.html?action=elementDetail&selectedElement=ILARA93010 .
Eliott, L., M. Quinn, C. Pfeiffer. 2017. "Species Sassacus Papenhoei" (On-line). bugguide.net. Accessed November 08, 2017 at https://bugguide.net/node/view/22942 .
Richman, D. 2008. Revision of the jumping spider genus sassacus (Aranea, Salticidae, Dendryphantinae) in North America. Journal of Arachnology , 36(1): 26-48. Accessed November 08, 2017 at http://www.bioone.org/doi/abs/10.1636/H07-03.1 .