Algivore
Guides
Haliplidae
Crawling Water Beetles, haliplids
Haliplidae is a family of small aquatic beetles comprising approximately 200 species in five genera, representing the sole extant member of the superfamily Haliploidea. These beetles are characterized by their distinctive swimming behavior using alternating leg movements, which renders them relatively clumsy swimmers compared to other aquatic beetles. Consequently, they predominantly move by crawling along substrates rather than swimming. The family exhibits a cosmopolitan distribution in freshwater habitats worldwide.
Ligia pallasii
Sleepy Seaslater, Rock Louse, Sleepy Sea Slater
Ligia pallasii is a large, semiterrestrial isopod in the family Ligiidae, commonly known as the sleepy seaslater or rock louse. It is among the largest sea slaters, reaching 25–30 mm in body length. This species inhabits the high intertidal zone along the Pacific coast of North America, from the Aleutian Islands to northern California. It exhibits nocturnal scavenging behavior, feeding primarily on algae and organic matter, and seeks shelter in moist microhabitats during daylight hours to avoid desiccation.
Trichadenotecnum
booklice, barklice
Trichadenotecnum is a large genus of barklice in the family Psocidae, containing over 200 described species. It is distinguished from related genera by forming a monophyletic group with highly variable genital morphology, particularly in males. The genus exhibits diverse reproductive strategies, including both biparental sexual reproduction and obligate or facultative parthenogenesis (thelytoky) depending on the species.