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Species

Species - Paradella dianae

Scientific name:
Paradella dianae (Menzies 1962)
Common name:
sphaeromatid isopod
General description:
Summary Description

Paradella dianae is a dorso-ventrally flattened sphaeromatid isopod. This species grows to 5 mm in length and is yellowish in colour. Mature males and females are different in shape and immature males resemble females. The pleotelson is granulose with a central dome bearing 2 pairs of tubercles, the first are aligned lengthways, the second aligned at angle. In males, the middle of the pleon has a pair of prominent tubercles (lower in females). In males, the outer edges of the pleotelson curve to form a Y-shaped notch at the apex (absent in females). The endopod extends past the apex of the pleotelson in males but is equal in length in females. The exopod is just shorter than the endopod.
Australian distribution:
Established
Detected in:
Queensland
Western Australia
Invasion status:

Non-native
Native origin:

Pacific coast of Mexico

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Caption:
Paradella dianae diagram & key features. Males - endopod of uropod extends beyond apex of pleotelson. Dorsally concave endopod. Characteristic curved outer edge of pleotelson at apex. Granulose dome on pleotelson. Females - endopod of uropod extends to level of apex of pleotelson. Exopod shorter than endopod.

Source:
Copyright Notice: Diagram: Javed & Ahmed, 1987 (by permission of E.J. Brill, The Netherlands). Acknowledge: true
Caption:
Paradella dianae line drawing, for use as image for NIMPIS sheet (image not available).

Source:
Copyright Notice: Glynn 1970. Acknowledge: true

Last modified: 3 March 2020