Dictis
L. Koch, 1872
Species Guides
1- Dictis striatipes(Striped Spitting Spider)
Dictis is a of spitting spiders ( Scytodidae) established by Ludwig Carl Christian Koch in 1872. As of January 2024, the genus contains seven distributed across Asia, Oceania, North America, and the Seychelles. Members are active hunters that prey on large ants and other spiders. The type species, Dictis striatipes, has the widest distribution, ranging from Yemen and the United Arab Emirates through tropical Asia to Australia and Pacific islands, with introduced in the United States and Mexico.
Pronunciation
How to pronounce Dictis: /ˈdɪk.tɪs/
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Identification
Dictis are distinguished from other scytodid by a combination of somatic and genitalic characters, though specific diagnostic features require examination of . The genus is characterized by elongated body form in some species (D. elongata, D. thailandica). Species-level identification relies on detailed examination of male and female epigynal structures. D. striatipes, the most widespread species, can be recognized by its distinctive striated leg patterning.
Habitat
occur in foliage and on forest floors. The type species D. striatipes occupies diverse tropical and subtropical across its broad range, from arid regions (Yemen, UAE, Iran) to humid forests (Southeast Asia, Australia). Introduced North American have established in human-modified environments.
Distribution
Native range: Yemen, United Arab Emirates, Iran, tropical Asia (including Korea, Japan, China, Thailand, Laos, Indonesia), Australia, Pacific islands, and Seychelles. Introduced: United States and Mexico. Seven recognized: D. striatipes (widespread), D. elongata (Thailand, Laos), D. thailandica (Thailand), D. edwardsi (China), D. uncata (China), D. oranhutan (Indonesia), D. soeur (Seychelles).
Diet
Behavior
Active hunters that roam freely in vegetation and on the ground rather than constructing webs for prey capture. As spitting spiders, members possess the -characteristic ability to eject sticky silk combined with venom to immobilize prey from a distance.
Human Relevance
No documented economic or medical importance. D. striatipes has been introduced to the United States and Mexico, presumably through human commerce, but impacts on native fauna have not been studied.
Similar Taxa
- ScytodesThe most -rich and widespread of Scytodidae; Dictis species can be separated by genitalic and in some cases by more elongated body proportions.
More Details
Taxonomic History
The was established by Ludwig Carl Christian Koch in 1872 with Dictis striatipes as the type . Recent descriptions (2010–2023) have expanded the genus from a previously broader concept, with several Asian species transferred or newly described based on detailed morphological study.