Evarcha hoyi
(G.W. Peckham & E.G. Peckham, 1883)
Hoy's Jumping Spider
Evarcha hoyi is a of jumping spider in the Salticidae, commonly known as Hoy's Jumping Spider. It is native to North America and has been documented across the United States and Canada. As a member of Salticidae, it possesses the characteristic large that provide acute vision for hunting. The species is primarily but has been observed sheltering on building exteriors at night.
Pronunciation
How to pronounce Evarcha hoyi: //ɛˈvɑɹ.kə ˈhɔɪ.aɪ//
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Identification
The Evarcha can be distinguished from other jumping spiders by the presence of a single on the male palpal tibia and specific arrangement patterns. -level identification of E. hoyi requires examination of genitalic structures, particularly the male and female . It may be confused with other Evarcha species such as E. proszynskii, but definitive separation relies on detailed morphological analysis not easily performed in the field.
Images
Habitat
Observations indicate association with human-modified environments; individuals have been found sheltering on the exterior walls of houses and buildings. The also occurs in natural forested , including lakeshore woodlands in the northern United States.
Distribution
Documented from the United States and Canada. Specific records include Vermont and Wisconsin in the USA. The full extent of its range within North America requires further survey.
Seasonality
have been observed in June. Activity patterns likely follow typical temperate zone salticid seasonality with spring through fall activity, though specific phenological data are limited.
Behavior
Primarily hunter that relies on vision rather than web-building to capture prey. Individuals have been observed sheltering in place on building exteriors at night, suggesting flexible use of microhabitats. Males, like other salticids, are expected to cease hunting and focus on mate-seeking upon maturity, though this has not been explicitly documented for this .
Human Relevance
Occasionally encountered on residential building exteriors, where it may contribute to controlling small insect . Not known to be of medical or economic significance.
Similar Taxa
- Evarcha proszynskiiOverlapping distribution in North America and similar general ; requires genitalic examination for reliable separation.
- Naphrys pulexSympatric jumping spider found in similar including building exteriors; distinguished by different body proportions and pattern details.
- Maevia inclemensCo-occurring salticid with pronounced male dimorphism; males of E. hoyi do not exhibit the distinct morphological forms seen in M. inclemens.
More Details
Taxonomic history
Described by George and Elizabeth Peckham in 1883, early American arachnologists who contributed substantially to jumping spider .
Observation notes
A 2019 survey in Door County, Wisconsin documented an male Evarcha sp. on a house exterior at night during cool, wet conditions, illustrating the ' tendency to use building surfaces as refugia.