Stenopodidea

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Stenopodidea
Temporal range: Late Devonian–Recent
Stenopus hispidus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Stenopodidea
Claus, 1872
Families

The Stenopodidea or boxer shrimps are a small group of decapod crustaceans. Often confused with Caridea shrimp or Dendrobranchiata prawns, they are neither, belonging to their own group.

Anatomy

They can be differentiated from the Dendrobranchiata prawns by their lack of branching

gills, and by the fact that they brood their eggs instead of directly releasing them into the water. They differ from the Caridea shrimp by their greatly enlarged third pair of legs.[1]

Taxonomy

Stenopodidea belongs to the

infraorders of shrimp. The cladogram below shows Stenopodidea's relationships to other relatives within Decapoda, from analysis by Wolfe et al., 2019.[2]

Decapoda

Dendrobranchiata (prawns)

Pleocyemata

Stenopodidea (boxer shrimp)

Procarididea

Caridea (true shrimp)

Reptantia

Achelata (spiny lobsters, slipper lobsters)

Polychelida (benthic crustaceans)

Astacidea (lobsters, crayfish)

Axiidea (mud shrimp, ghost shrimp, or burrowing shrimp)

Gebiidea (mud lobsters and mud shrimp)

Anomura (hermit crabs and others)

Brachyura (crabs)

(crawling/walking decapods)

There are 71 extant species currently recognized within Stenopodidea, divided into 12 genera.[3] Three fossil species are also recognized, each belonging to a separate genus.[4][5] The earliest fossil assigned to the Stenopodidea is Devonostenopus pennsylvaniensis from the Devonian.[5] Until D. pennsylvaniensis was discovered, the oldest known member of the group was Jilinicaris chinensis from the Late Cretaceous.[6]

The cladogram below shows Stenopodidea's internal relationships:[2]

Stenopodidea

Stenopodidae

Macromaxillocarididae

Spongicolidae


Stenopodidea comprises the following families and genera:

References

  1. ISBN 978-0-8061-3555-7
    .
  2. ^
    PMID 31014217
    .
  3. ISBN 978-90-6519-200-4. Archived from the original
    on 2012-12-20.
  4. Raffles Bulletin of Zoology
    . Suppl. 21: 1–109.
  5. ^
    doi:10.1666/13-059
    .
  6. doi:10.1163/156854000504183
    .
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