DaHRA Downloadable files
S1_File_Triangle_casting_mold.stl
S2_File_Anatomy_ontology.xlsx
References
Crustacea Glossary by Natural History of Los Angeles County at https://research.nhm.org/glossary/
Maggenti, M. A. B. and Maggenti, A. R.; Scott L. Gardner (Ed) (2005): Online Dictionary of Invertebrate Zoology. http://digitalcommons.unl.edu/onlinedictinvertzoology/2/ doi:10.13014/K2DR2SN5
Abdominal process (syn. abdominal outgrowth)
One of typically two dorsal processes projecting from border of trunk and postabdomen; considered to serve in closing off brood chamber posteriorly
Abdominal seta (pl. setae)
One of two elaborate setae located on small protuberance on dorsal surface of postabdomen
Adductor muscle (of carapace)
Muscle attached to carapace for pulling it to the body (thorax)
Aesthetasc
One in a tuft of sensory projections at tip of each antennule
Antenna (syn. second antenna, pl. antennae)
One of the second and much larger pair of antennae; located laterally near posterior margin of head; biramous, consisting of relatively large basal part (protopodite) bearing two- to four-segmented dorsal and ventral branches (rami), serves as principle locomotory organ and moved by relatively large antennal muscles
Antennule (syn. first antenna)
One of the first and typically much smaller pair of antennae; located ventrally near posterior margin of head; uniramous, unsegmented, with tuft of terminal aesthetascs
Anus
Posterior opening of digestive tract at end of postabdomen
Adductor muscle
Muscles attached to the carapace that pull it to the body, or connect the carapace
Brood Chamber (syn. brood pouch)
Any space or sac-like cavity utilized as a uterus, in which eggs or embryos are developed
Carapace (syn. shell)
A cuticular, usually calcified, single-piece (univalved) shield which, if fully developed, covers only posterior part of body (trunk); laterally compressed, with ventral gape, and therefore occasionally described as bivalved
Carapace Spine (syn. apical spine, posterior spine, shell spine)
Large, posteriorly directed, spine-like structure formed by posterodorsal extension of carapace
Cerebral ganglion (syn. supraesophageal ganglion)
One of a pair of ganglia (or fused median ganglion) situated in the head or anterior part of the body in front of or dorsal to the esophagus; often termed as brain
Chitin
A resistant complex chemical compound, the chief constituent of the exoskeleton, or carapace
Compound eye
One of two large photosensitive organs on head; sessile, typically fused, and enclosed within optic vesicle; movable by series of optic muscles
Hepatic cecum (syn. cecum, digestive cecum, midgut diverticulum)
One of two lateral digestive organs of midgut; located in head posterior to border of esophagus and midgut
Dorsal
Of, or pertaining to, the back or upper surface
End sac (of maxillary gland)
Expanded proximal section of each maxillary gland; opens to exterior via tubule (convoluted duct)
Endite
Inwardly (medially) directed, setose lobe of basal part (protopodite) of trunk appendage; first endite typically well delimited, the following endites increasingly incorporated into endopodite
Ephippium
Egg case formed by walls of brood pouch, typically separated from rest of carapace during molting
Epipodite
In trunk appendage, laterally (outwardly) directed lobe projecting from base of protopodite, represents only lobe articulated with appendage and serves in respiration.
Esophagus (syn. foregut, stomodeum)
Relatively short and narrow anterior section of digestive tract, ectodermal in origin and line with cuticle; cast off with molt
Exopodite
Lobe-like outer branch of trunk appendage; lacks articulation with protopodal part of appendage
Exoskeleton
Chitinous or calcified outer integument covering trunk and appendages
Filter plate (syn. filter comb)
One of the paired structures on thoracic appendages (usually third and fourth) that serves to filter suspended feeding matter
Food groove
Elongate median groove between bases of thoracic appendages, passed anteriorly along food groove, and transferred to mouth
Fornix
Ridge in lateral part of cephalon above insertion of antennal muscles
Gnathobase
Paired endites used to manipulate or move food
Gonopore
Opening of male reproductive system to exterior
Head (syn. cephalon)
Anterior of two divisions of body (head, trunk); bearing antennules, antennae, mandibles, maxillules, (reduced) maxillae, compound and naupliar eyes, and may be covered by a head shield; not enclosed by carapace
Head shield (syn. cephalic shield)
Variously developed, unpaired, shield-like structure covering head
Heart
In circulatory system, typically short, muscular pumping organ located anterior to brood chamber in trunk; blood enters heart through single pair of ostia and is pumped anteriorly into a sinus
Hemolymph
The circulating fluid; composed of cells and plasma; often loosely termed as blood.
Hemocyte
A mesodermal cell, sessile, circulating in the hemolymph; often loosely termed as blood cell
Hindgut (syn. proctodeum)
Short posterior most section of digestive tract between midgut and anus
Integument
Outer covering of exoskeleton
Labrum (syn. upper lip)
Unpaired, median lip-like structure posterior to mouth, distal ends of mandibles extend under labrum
Levator muscle
A muscle serving to raise an organ or part
Mandible
Paired, jaw-like cutting, grinding, or crushing appendages, consists of a fairly hard, chitinised region
Maxillule (syn. first maxilla, maxillula)
Cephalic appendages immediately posterior to mandibles, serving as mouth part.
Maxillary gland (syn. shell gland)
One of two excretory organs located in head and opening ventrally at level of maxillule; forms several loops (tubule).
Midgut
Elongate section of digestive tract between esophagus and hindgut
Nerve cord
Pair of widely separated, longitudinal nerve cords extending into trunk from posterior part of cerebral ganglion; forms ladder-like chain with relatively few, occasionally fused ganglia
Ocellus (syn. median eye, naupliar eye)
Small median photosensitive organ located ventrally on head between mouth and compound eye
Ommatidium (pl. ommatidia)
One of the component units of a compound eye, consisting essentially of an optical and a sensory part
Optic lobe
Lateral extensions of the protocerebrum or nervous system for innervation of an eye
Optic nerve
Nerve(s) leading from cerebral ganglion to each (fused) compound eye
Ostium (pl. ostia)
One of two lateral openings in heart; hemolymph enters heart through ostia and is pumped anteriorly
Ovary
Paired section of female reproductive system in which eggs are produced; typically extends through anterior part of trunk, one along each side of midgut, opens dorsally via oviduct into brood chamber
Oviduct
Short and narrow section of female reproductive system between posterior part of each ovary and dorsal brood chamber
Peritropic membrane
Chitinous membrane, secreted in anterior region of midgut and surrounding feces; considered to protect midgut lining from damage during passage of undigestible material
Postabdomen
Recurved (turned ventrally and forward) posteriormost region of trunk, bears pair of abdominal setae proximally and caudal rami distally), as well as series of spines (anal spines) and denticles, terminating in 2 claws
Postabdominal claw (syn. claw, caudal ramus, terminal claw)
One of two relatively short, claw-shaped projections at end of postabomen, may bear up to three series (pectens) of minute spines
Protocerebrum
One of two anterior dorsal cerebral ganglia; receives the optic nerves
Protopodite (syn. protopod)
Proximal part of trunk appendage; bears one or two distinguishable endites along inner margin and epipodite on outer margin, as well as distal endopodite and exopodite
Basal part of each antenna; relatively long, bearing two- to four-segmented dorsal and ventral branches (rami)
Ramus (pl. rami)
Branch of appendage, refers either to dorsal or ventral branches of antennae
Ridge
Elevated ridge along carapace.
Rostrum
Anterior (ventrally directed) beaklike extension of head
Seta (pl. setae)
A cuticular hair arising from the outside of the exoskeleton
A cuticular process that is clearly articulated with the basal cuticle
Setule
A small bristle or spine on seta
Sperm duct (syn. Vas deferens)
Narrow section of male reproductive system extending from posterior end of each testis to gonopore(s)
Spinule
Small spine along dorsal margin of carapace
Testis (pl. testes)
Paired section of male reproductive system in which sperm are produced, extend through anterior part of trunk, one to each side of midgut; opens to exterior via ventrally directed vas deferens
Thoracic appendage (syn. thoracic limb, trunk limb, thoracopod)
One of five pairs of appendages of anterior region of trunk (thorax); basically biramous, consisting of indistinct proximal protopodite (with endites and epipodite) and more distal endopodite and exopodite
Thorax
anterior appendage-bearing region of trunk
Trunk
Posterior of two divisions of body (head, trunk), consist of thorax, abdomen, and postabdomen
Transverse
Crossing at right angles to the longitudinal axis; lying across or between
Tubule (of maxillary gland)
One of the convoluted ducts of paired maxillary gland
Ventral
The lower or underside of the body, that which is normally facing downwards