is the most prevalent species of carabid beetle 

 found at Tijuana Estuary. This small insect 

 (to 3.5 mm) occurs in all marsh habitats and 

 feeds primarily on other small arthropods. 

 Another beetle, Eurynephala maritima, is 

 found on the stems of pickleweed. Two spiders 



that inhabit this zone are Tetragnatha 

 laboriosa and Pardosa ramulosa. The former 

 is often found extended along the narrow 

 leaves of cordgrass, while the latter is 

 abundant on algal mats. 



Figure 3.5. Selected insects and arachnids of the salt marsh. Illustrated are two spiders, 

 Tetragnatha laboriosa (upper left, body 10 mm long) and Pardosa ramulosa (body 10 mm long; 

 shown with eggs); the pseudoscorpion (Halobisium occidentals; Chelonethida), which is found with 

 pickleweed; the springtail (Collembola: Isotomidae, Isotoma sp.; bottom center), a very small but 

 abundant species, especially in plant detritus; and two beetles, Tachys corax (lower left) and 

 Eurynephala maritima (lower right, body 6 mm long). Mclntire collection, © 1986 by Zedler. 



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