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Daphnia lumholtzi
Phylum Arthropoda
Subphylum Crustacea
Class Branchiopoda
Suborder Cladocera
Family Daphnidae
Distinguishing Characteristics
  • Prominent cervical sinus
  • Usually with high pointed helmets, but non-helmeted individuals may also occur
  • Sharp fornices extend laterally in both helmeted and non-helmeted individuals
  • Ephippium not extending up to the head shield; ephippia more elongate than for most Daphnia species
  • Ventral margin of the carapace has long, widely-spaced spines
  • Characteristics modified from Petrusek et al. (2005)
Geographic Distribution

    Daphnia lumholtzi is native to Africa, Australia and Asia. It is a recent invasive species in North America; D. lumholtzi was first detected in a Texas reservoir in 1990. It is now found in the Great Lakes region as well as the Southwest USA and its distribution is expanding.

Reported Habitats

    D. lumholtzi inhabit large lakes as well as small temporary pools.


    Sharp helmets and tailspines are defenses induced by fish kairomones

Literature Cited

PETRUSEK, A., BASTIANSEN, F., SCHWENK, K. (2005): European Daphnia Species (EDS) - Taxonomic and genetic keys. [Build 2006-01-12 beta]. CD-ROM, distributed by the authors.


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