Parapontocaris levigata Chace, 1984 Common name :

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Parapontocaris
 levigata  Chace, 1984 

Common
name :

Synonyms
:

Distribution
: Indo-West Pacific: Madagascar to Japan, South China Sea and
Indonesia.

Environment
: Marine; Benthic;
depth range 217 – 659 m 

Size :

Collection
site : Sakthikulangara

Species
examined : 2 specimens examined

Description : Rostrum  moderately elongate, armed with 2 subequal
pairs of lateral teeth. Carapace  without
distinct hepatic furrow, varying in postorbital length from nearly 1 2/3rd
 as long as wide in smallest specimens
to about 1 2/3 in largest. Median
carina armed with 5 teeth, 2 anterior smaller than 3 posterior. First lateral
carina armed with 4 or 5 teeth, anterior most small, situated slightly
posterior to base of rostrum. Second lateral carina armed with 3 teeth, without
exception. Third lateral carina armed with 1, less commonly 2, teeth.
Branchiostegal spines not noticeably divergent. First abdominal somite with 3
pairs of sharp longitudinal carinae, anterior margin bearing 1, uncommonly 2,
lateral teeth or denticles. Second abdominal somite with 2, very rarely 1 or 3,
teeth in dorsal midline. Fourth abdominal somite with 3 pairs of divergent
lateral carinae. Fifth abdominal somite with pleuron neither truncate nor
bidentate posteriorly. Sixth abdominal somite with pair of dorsolateral carinae
armed with 1-4 pairs of teeth anterior to posterior marginal ones. Eyes
expanding distally, of moderate width.Stylocerite bearing minute distal
denticle and slightly overreaching basal segment of antennular peduncle. Antennal
scale up to more than 2 1/2nd
 times as long as wide, not noticeably
more elongate in immature specimens, distolateral spine distinctly overreaching
distal margin of blade, lateral margin faintly convex to straight, even in
adults. Mouthparts as illustrated  Third
maxilliped overreaching antennal scale by about 1 1/2 length of distal
segment. First pereopod overreaching antennal scale by about 1/4th
 length of chela. Second pereopod
usually overreaching anteriorly extended carpus of 1st pereopod,

 

 

 

carpus
about 1 1/2nd  times as
long as chela. Third pereopod overreaching antennal scale by lengths of dactyl
and propodus. Fourth pereopod overreaching antennal scale by about of
dactyl, latter subspatulate, terminating in 2 subequal processes. Fifth pereopod
similar to 4th and reaching about midlength of antennal scale. First pleopod of
male with endopod acinaciform. Appendix masculina  provided with about a dozen long spines in
adult, reaching about to distal 1/5th
 of endopod of 2nd pleopod, not including
spines. Uropods reaching nearly to posterior end of telson.

 

Remarks
:

 

Original description : Chace,
F.A.Jr., 1984. The caridean shrimps (Crustacea: Decapoda) of the Albatross
Philippine Expedition, 1907-1910, Part 2: families Glyphocrangonidae and
Crangonidae.— Smithsonian Contributions to Zoology 397: 1-63.

 

 

Categories: Sciences

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