APSEUDIDAE Leach, 1814

Bamber, Roger N., 2011, The marine fauna and flora of the Isles of Scilly. Tanaidacea (Crustacea: Peracarida), Journal of Natural History 45 (29 - 30), pp. 1801-1815 : 1804-1805

Family APSEUDIDAE Leach, 1814

Subfamily APSEUDINAE Leach 1814 Genus Apseudes Leach, 1814 Apseudes talpa (Montagu, 1808)

Apseudes talpa Holdich and Jones, 1983 , 28–29; fig. 6.

Material

Two ºº (hermaphrodites), low-littoral Audouinella -bedded sand on boulders, south side of causeway to White Island, northwest St Martin’s, 7 April 2001 ; one juvenile, shingle in sandy gravel with weed, south of Broad ledge, St Martin’s Flats, 9 April 2001 ; 3 brooding ♀♀, 1 juvenile, 6 mancae ( BMNH 2009.277 – 286 ), low-littoral Audouinella -bedded sand, Thomas Porth , St Mary’s, 49 ◦ 55.5 ′ N, 06 ◦ 18 ′ W, 27 June 2009 ; 1º, 49 ◦ 55.43 ′ N, 06 ◦ 6.41 ′ W, muddy sand with some shell breccia, 36 m depth, van Veen grab, 27 June 2009; 2 brooding ♀♀, 49 ◦ 54.46 ′ N, 06 ◦ 27.09 ′ W, rocks with tunicates, algae and sediment scraping, 71 m depth, Tjärnö dredge, 29 June 2009; 2 brooding ♀♀, 3ºº, 1 juvenile, 49 ◦ 54.24 ′ N, 06 ◦ 25.13 ′ W, sessile sponge-hydroid epifauna, 32.7 m depth, van Veen grab, 29 June 2009; 1♀ with oostegites, 1 neuter, low-littoral Audouinella -bedded sand, Burnt Island , Periglis Cove, St Agnes, 49 ◦ 53.77 ′ N, 06 ◦ 21.71 ′ W, 9 September 2010 ; 2 neuters, 2 mancae, Laminaria holdfast, LWST, Burnt Island , Periglis Cove, St Agnes, 49 ◦ 57.77 ′ N, 06 ◦ 18.36 ′ W, 9 September 2010 ; 2♀♀ (1 with oostegites), 3 mancae, mid-littoral Audouinella -bedded sand, North Periglis , St Agnes, 49 ◦ 53.78 ′ N, 06 ◦ 21.03 ′ W, 9 September 2010. All coll. RNB.

Other records

“Present”, Porth Looe, St Mary’s, 49 ◦ 55.36 ′ N, 06 ◦ 18.57 ′ W, 1956 (Causon et al. in MarLIN); “present”, St Agnes, 49 ◦ 52.93 ′ N, 06 ◦ 21.10 ′ W, 1956 (Causon et al. in MarLIN); “ Isles of Scilly ”, 1964 ( Robins and Thurston, 1965: CBRU Record No. W75627); “present”, Deep Point, St Mary’s, 49 ◦ 55.36 ′ N, 06 ◦ 16.43 ′ W, Spring 1965 ( ULSAC in MarLIN); 2 specimens, Shipman Head, Bryher, 49 ◦ 58.03 ′ N, 06 ◦ 21.60 ′ W, 1996 ( Kendall et al. 1996).

Remarks

Apseudes talpa was taken in alga-associated and heterogeneous substrata, from the low-littoral to 36 m depth. It would appear to be the sublittoral counterpart of the following species in these islands, and it is possible that some of the deeper earlier records of Apseudopsis latreilli may have included this species.

Holdich and Jones (1983) mention the occurrence of this species in the Isles of Scilly, as well as in the Channel Isles , on the southern coasts of England, the Isle of Man, and east and west coasts of Ireland. The type locality is Salcombe , Devon. Elsewhere it has been recorded from Dutch , French , Portuguese and North African coasts, in depths from 0 to 33 m.

Apseudes talpa , the type species of the genus, is in part a simultaneous hermaphrodite (e.g. Holdich and Jones 1983): the specimens above labelled º have oostegites and a male genital cone.