cephalothorax

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ceph·a·lo·tho·rax

 (sĕf′ə-lə-thôr′ăks′)
n.
The anterior section of arachnids and many crustaceans, consisting of the fused head and thorax.

cephalothorax

(ˌsɛfələʊˈθɔːræks)
n, pl -raxes or -races (-rəˌsiːz)
(Zoology) the anterior part of many crustaceans and some other arthropods consisting of a united head and thorax
cephalothoracic adj

ceph•a•lo•tho•rax

(ˌsɛf ə loʊˈθɔr æks, -ˈθoʊr-)

n., pl. -tho•rax•es, -tho•ra•ces (-ˈθɔr əˌsiz, -ˈθoʊr-)
the anterior part of the body in certain arachnids and crustaceans, consisting of the coalesced head and thorax.
[1825–35]
ceph`a•lo•tho•rac′ic (-θəˈræs ɪk) adj.

ceph·a·lo·tho·rax

(sĕf′ə-lə-thôr′ăks′)
The combined head and thorax of arachnids, such as spiders, and of many crustaceans, such as crabs.
Translations
Kopfbruststück
References in periodicals archive ?
stage I--gonads not visible, stage II--vas deferens is thin, filamentous, and only visible under magnification, stage III--vas deferens is clearly visible and brown or transparent in color, stage IV--testes are partially convoluted and have white coloration, and stage V--testes are enlarged and gonad occupies all cephalothoracic cavity with white coloration.
Like other decapod crustaceans, shrimp rely on chemical senses to detect and localize food resources by means of chemosensilla that are located mainly on the cephalothoracic appendages.
The following somatic parts of each crab were measured: maximum carapace width (CW; was always measured behind the third cephalothoracic spine), abdomen width for females (AW; obtained from the 5 th to 6th abdominal somite) and gonopod length for males (GL) to the nearest 0.
The Barraquer-Simons syndrome, APL or cephalothoracic lipodystrophy, was described by the Spanish physician Barraquer in 1906 and the German physician Simons in 1911 [1].
Submedian tubercles enlarged near termination of cephalothoracic segment sutures abdominal segment I & II.
Another cause of confusion in determining sexual maturity in female shrimp may occur between the nearly ripe and ripe stages, because the gonad occupies the whole cephalothoracic cavity, and different shades of green can be observed.
In general, the organ occupies much of the cephalothoracic cavity and is connected to the pyloric stomach by two primary ducts.
2007) and epicuticular surface sculpturing (Parker & Hegedus 2003) on the abdominal and cephalothoracic regions, on which these colors are typically located.
In pseudoscorpions, adult size of these fully sclerotized cephalothoracic and pedipalpal traits is fixed at the final nymphal molt (Chamberlin 1931; Zeh 1987b).