Trypanosyllis aeolis, LANGERHANS, 1879

TRYPANOSYLLIS AEOLIS LANGERHANS, 1879 View in CoL ;

FIGS 10B View Figure 10 , 12A, B View Figure 12

Trypanosyllis aeolis Langerhans, 1879: 558 View in CoL , figs 18a, b; N u � nez ~ et al., 1992: 114; San Mart � ın, 2003: 315, figs 174 – 176.

Material examined

Spain, Mallorca , El Toro Island (39.4891, 2.4809): three specimens in 96% EtOH ( MNCN 16.01 About MNCN /16039, 16180, 16181), Cladocora cespitosa and Miriapora sp., 12 m, 18 June 2012, leg. P. Alvarez-Campos GoogleMaps � and M. Capa. Australia, QLD, Lizard Island , Watsons Bay (14.657222, 145.450833): one specimen in 96% EtOH ( AM W.41717), coral rubble, 4.5 m, 28 August 2010, leg. P. Hutchings and M. Capa. GoogleMaps

Diagnosis

Uniform pale pink coloration, with yellow dorsal cirri ( Fig. 10B View Figure 10 ); compound bidentate chaetae, with small proximal tooth; sometimes blades unidentate on posterior parapodia ( Fig. 12B View Figure 12 ).

Description

Longest complete specimen ( MNCN 16.01/16039), 10 mm long, 1.2 mm wide, 65 chaetigers. Pale pink body coloration with yellow pigmentation in some cirri ( Fig. 10B View Figure 10 ). Oval posteriorly bilobed prostomium ( Figs 10B View Figure 10 , 12A View Figure 12 ); two prostomial lobes, with two pairs of red eyes in trapezoidal arrangement ( Fig. 10B View Figure 10 ). Oval palps slightly shorter than prostomium, completely separate. Nuchal organs as two densely ciliated semicircular areas, surrounding the eyes ( Fig. 12A View Figure 12 ). Antennae originating on anterior margin of prostomium, median antenna long, with about 23 articles; lateral antennae distinctly shorter, with about 15 articles ( Figs 10B View Figure 10 , 12A View Figure 12 ). Segment 1 slightly shorter than subsequent segments; dorsal enlarged anterior cirri slightly longer than antennae, with about 25 articles, longer than ventral cirri, with about 20 articles. Anterior dorsal cirri as long as median antenna (25 articles); midbody and posterior dorsal cirri shorter, with 20 and 15 articles, respectively. Ventral cirri digitiform, shorter than parapodia. Compound bidentate heterogomph falciger chaetae with both teeth similar in length and with a few and minute spines on margin ( Fig. 12B, C View Figure 12 ). About 13 or 14 chaetae on anterior parapodia ( Fig. 12B View Figure 12 ), and with between eight and ten chaetae on midbody and posterior parapodia ( Fig. 12C View Figure 12 ). One unique, thick, and straight aciculae protruding from each parapodia ( Fig. 12B View Figure 12 ). Pharynx through about ten segments; trepan with eight teeth. Proventricle similar in length to pharynx, through nine segments, with about 22 muscle cell rows.

Remarks

See remarks for Trypanedenta gemmipara comb. nov. One of the specimens of Trypanosyllis aeolis analysed is from Australia, and even though we have not been able to find morphological differences with the specimens from the Iberian Peninsula, because of their disjunct distribution this may represent another case of cryptic speciation.

Type locality

Madeira (Atlantic Ocean).

Distribution

Pacific Ocean (Washington, USA); north-eastern Atlantic Ocean ( UK, Portugal, and Spain); Mediterranean Sea, including Adriatic and Aegean seas.

TRYPANOSYLLIS LUZONENSIS (PILLAI, 1965) COMB.