politus has a third maxilliped with a minute dactylus
inserted subdistally on the ventral margin of propodus (Figs.
La ausencia de circulo es un caracter que comparte con Dysmicoccus dactylus
A difference was found regarding the propodus and dactylus
between the species.
6G) Basal endite with 2 long spines; vestigial dactylus
Pereopod 1 dactylus
and unguis much shorter than in female.
Spines and papillae on each dactylus
arranged as follows: 1 anterolateral row and 1 anteroventral row each with 7 spines; 1 external row with 6 spines, 2 intercalated papillae and 3 proximal papillae; 1 posteroventral row with 4 spines and 2 intercalated papillae and 1 posterolateral row with 4 spines.
When the Mxp3 endopods collect sediment, they start by pressing the dactylus
and sometimes also the propodus into it (Fig.
1986); for Solen dactylus
in Persian Gulf, Iran (Saeedi et al.
The photophores in the dactylus
of the 3rd maxilliped are located along its posterior (ventral) surface towards the lateral edge, and they are organized in a single row [ILLUSTRATION FOR FIGURE 1 OMITTED].
3 (g/g dry shell mass) in Solen dactylus
(Cosel, 1989) (Saeedi et al.
MXP3 obliquely placed on buccal cavity, ischium and merus indistinguishably fused, palp of three articles, joined end to end; carpus larger than propodus and dactylus
combined, propodus extending distally, small dactylus
distally inserted on ventral margin of propodus.
Lysianassoid amphipods are characterized, in a variable way, by antenna 1 with peduncle short and robust, and flagellum with callynophore; antennae with calceoli; rostrum reduced; gnathopod 2 with a minute dactylus
, with article 3 elongate and article 6 mitten-shaped (Senna & Serejo, 2008).
2a-2b), head width about 1/4 to 1/3 of mantle length, slightly narrower in mature females than in mature males; mantle-funnel locking apparatus simple, straight, ridge-and-groove type; buccal membrane 7-lobed with support attached dorsally on arms I and II and ventrally on arms III and IV; buccal lobes reduced in size; buccal suckers absent; distinct manus and dactylus
present but carpus absent (Fig.
2009), and the boring clam Pholas dactylus
(Shimomura 2009) have been reported to exhibit autofluorescence.
These traits include the release of abdominal somites from the thoracic sternites and opening of gonopods (Guinot, 1979), the conspicuous growth of certain cheliped segments (mainly the propodus) (Hartnoll, 1982; Pinheiro & Fransozo, 1993), and colour pattern enhancement of cheliped propodus and dactylus
(Hopkins, 1963; Ryan, 1967).