Crustacea Spinicaudata
Creators: name: Timms, Brian
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Crustacea

description: Key to Genera of Clam Shrimps in Australia 1 Carapace flattened and with growth lines (sometimes inconspicuous); telson with caudal furcae....................................................................................... <b>2</b> – Carapace spherical and without growth lines; telson without caudal furcae.......................................................................................................... <i>Lynceus</i> <i> 1</i> 2 Head with pyriforme frontal organ posterior to compound eyes................. <b>3</b> – Head without a pyriforme frontal organ..................................................... <b>5</b> 1 Two described species of <i>Lynceus</i>, but three species discernable genetically (Zofkova 2006). No key to species available. 3 Growth lines weakly developed and generally restricted to carapace margin; movable finger of claspers in males with small sucker-like dorsodistal projection; usually &lt;10 mm in length................................................................... <b>4</b> – Growth lines expressed and covering entire carapace; movable finger of claspers without sucker-like dorsodistal projection; usually&gt; 10 mm in length.......................................................................................................... <i>Limnadopsis</i> <i> 2</i> 4 Telson with a spine on its lower distal angle............................. <i>Eulimnadia</i> <i> 3</i> – Telson without a spine on its lower distal angle............................. <i>Limnadia</i> 5 Carapace elongated, coloured brown/reddish/yellowish and&gt; 6mm in adults; dorsal margin of telson without large spines similarly sized to caudal furcae.... <b>6</b> – Carapace circular, transparent and small (&lt;5mm); dorsal margin of telson with large spines similarly sized to caudal furcae...................... <i>Cyclestheria</i> <i> 4</i> 6 Rostrum without an apical spine; telson with &lt;25 spines, usually of variable size.............................................................................................................. <b>7</b> – Rostrum with an apical spines; telson with&gt;30 subequal spines.. <i>Eoleptestheria</i> <i> 5</i> 7 Male rostrum in lateral view narrow, only with anterior and ventral margin and no obvious posterior margin; colour of mature specimens brown/reddish...... <b>8</b> – Male rostrum in lateral view broad and hatchet-like, with posterior margin in addition to an anterior and ventral margins; colour generally yellowish............................................................................................................ <i>Eocyzicus</i> <i> 6</i> 8 Dorsoposterior end of head (occipital crest) with round and short condylus, distinct from the trunk; generally&gt; 8 mm.............................. <i>Caenestheria</i> <i> 7</i> – Dorsoposterior of head with a pointed condylus, head and trunk dorsally not distinct; generally &lt;6 mm.................................................... <i>Caenestheriella</i>
description: Published as part of <i>Timms, Brian, 2009, First records of a leptestherid clam shrimp in Australia (Crustacea, Spinicaudata, Leptestheriidae, Eoleptestheria), pp. 1-16 in ZooKeys 18 (18)</i> on pages 12-13, DOI: 10.3897/zookeys.18.92, http://zenodo.org/record/576494
description: {"references": ["Zofkova M (2006) Evolutionary dynamics in ephemeral pools: Inferences from genetic architecture of large branchiopods. Ph D Thesis, Perth, Australia: School of Animal Biology, University of Western Australia."]}