Alpheus

Alpheus mitis Dana, 1852

Alpheus mitis
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Original DescriptionAlpheus mitis Dana, 1852a: 22; Dana, 1852b: 549; Dana, 1855: pl. 35, fig. 1. 
ClassificationArthropoda: Crustacea: Malacostraca: Decapoda: Alpheidae. 
SynonymyNone. 
Type LocalityBalabac Strait between S Philippines and N Borneo (symbol on the map). 
Type MaterialInextant. 
Common NameNone. 
Taxonomic StatusValid but taxonomic status obscure (Chace, 1988). 
Geographic DistributionTropical Indo-West Pacific [IWP]: with certainty known only from the type locality, Balabac Strait (see map). 
FrequencyExtremely rare. 
HabitatUnknown. 
Depth RangeUnknown. 
Life History and BehaviorUnknown. 
Related SpeciesAlpheus aff. paracrinitus (Anker, pers. obs.) [IWP]; A. bengalensis Coutière, 1905 [IWP]; A. alpheopsides Coutière, 1905 [IWP]; A. paralpheopsides Coutière, 1905 [IWP]; A. tenuipes De Man, 1910 [IWP]; A. paracrinitus Miers, 1881 [EA-CA-WA] and other Atlantic and eastern Pacific species of the A. paracrinitus complex (see under A. paracrinitus). The poor knowledge of A. mitis (short description, possibly inaccurate illustrations, loss of type) does not allow to compare this species adequately with other species, however, it may differ by the proportionally broader palm of the major chela. 
SizeTotal body length of the type was 19 mm. 
Color PatternUnknown. 
Molecular BarcodeUnavailable. 
RemarksThe taxonomic identity of A. mitis remains problematical (see Banner and Banner, 1982; Banner and Banner, 1983; Chace, 1988); records from Truk (Miya, 1984) and Taiwan (Jeng and Chang, 1985) most likely do not refer to A. mitis, but instead to a species from the A. aff. paracrinitus complex. 
Major ReferencesDana, 1852a; Dana, 1852b; Dana, 1855; [original description and illustrations]; Banner and Banner, 1982 [erroneous record]; Banner and Banner, 1983 [remarks on previous records]; Miya, 1984 [possibly erroneous record]; Jeng and Chang, 1985 [erroneous record]; Chace, 1988 [remarks on taxonomic status]. 


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