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Achelia - Species in
Ammotheidae - - Classification / Names -
- Ammotheidae
- Pantopoda
- Pycnogonida
- Chordata
- Animalia
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Achelia assimilis (Haswell, 1885)
Sea spiders| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Achelia assimilis AquaMaps Data sources: GBIF OBIS |
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS
Pycnogonida | Pantopoda | Ammotheidae
Environment: milieu / climate zone / depth range / distribution range Ecology
Reef-associated; depth range 0 - 910 m (Ref. 9). Subtropical
Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions
Indo-Pacific and Southwest Atlantic. Tropical to temperate.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 0.1 cm TRKL male/unsexed; (Ref. 1666)
Short description Morphology
Trunk: suture lines complete, partial or lacking. 2 or more dorsomedian tubercles on trunk with or without similar tubercles on abdomen. Lateral processes: broad, more or less contiguous, with distal tubercles which differs in size and number. Proboscis: a slender ovoid as long as trunk. Chelifores: 2-segmented, scape longer than usual, with short dorsodistal tubercles or without. Chelae: tiny nubs, atrophied in adults. Palps: 8 segmented. Ovigers: 10 segmented, smaller in females, armed with 1-2 denticulate spines per distal 3 segments. Legs: slender, with or without low to tall tubercles, mostly dorsal if present. Male femur with 1 dorsodistal cement gland pore. Propodus: well curved, with 3-4 larger heel spines, 7-8 smaller sole spines, robust claw and stout auxiliaries of varying lengths (Ref. 9).
Among intertidal tufts of Cladophora prolifera; in coral reefs (Ref. 1666), until to a depth of at least 250 m (Ref. 92910). Inhabits hyrodozoan trees, stones, dead corals and red algae (Ref. 92908).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Pycnogonida are gonochoric and sexually dimorphic. During copulation, male usually suspends itself beneath the female. Fertilization occurs as the eggs leave the female's ovigers. Males brood the egg masses until they hatch. Life cycle: Eggs hatch into protonymphon larva then to adults.
Main reference
References | Coordinator | Collaborators
Child, C.A. 1998. (Ref. 9)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
CMS (Ref. 116361)
Not Evaluated
Threat to humans
Human uses
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More information
Internet sources
BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record
Estimates based on models
Preferred temperature
(Ref. 115969): 4.8 - 21.1, mean 12.5 (based on 1241 cells).
Price category
(Ref. 80766):
Unknown.