Pitho laevigata (A. Milne-Edwards, 1875)

Santana, Laira Lianos Michelle Mollemberg Fernando José Zara Marcos Tavares William, 2021, SEM studies on first and second gonopod morphology in Mithracidae (Decapoda: Brachyura), Nauplius (e 2021039) 29, pp. 1-19 : 8-12

Pitho laevigata (A. Milne-Edwards, 1875) ( Fig. 8 ).

G1( Fig. 8A, B ): long, robust, rounded;distal third slightly curved towards mesial line;lateral margin with few pappose setae (Se) from base (Ba) to distal third of shaft, simple setae on lateral side of apex; suture

(Ss) extending from base to distal end (De) of tip, acute ejaculatory canal aperture on pleonal surface margin; distal end tapering abruptly, forming large process, mesially curved, spine on ejaculatory canal absent; lateral margin of sternal surface distally with rounded sensilla (S).

G2 ( Fig. 8C, D ): short, conical, tapering distally; basally enlarged with few sparse plumodenticulate setae (Se); apex (A) with wrinkles forming apical girdle (Ag), large mesial process (Mp) blunt,medially located.

Teleophrys ruber (Stimpson, 1871) ( Fig. 9 ).

G1 ( Fig. 9A, B ): long, robust, slightly flattened dorsoventrally; proximal third slightly curved towards mesial line; lateral margin with simple setae (Se) from base (Ba) to distal second third of shaft; suture (Ss) extending from base to distal end of apical plate (Ap), ejaculatory canal aperture (Ec) on pleonal surface margin; distal fourth gently tapering and slightly curved towards lateral line, with subtriangular protuberance (P) on mesial margin; strangled apex (A) formed by apical plate and two distinct lobes –

mesial lobe (M1) small, oval; lateral lobe (L1) larger, subtriangular, border rounded distally, ending in blunt tip; lateral margin of sternal surface distally with small conical sensilla (S); apical plate with long, acute spines (Sp) surrounding ejaculatory canal aperture, with some spines inclined towards internal aperture.

G2 ( Fig. 9C, D ): short, conical, tapering distally; basally enlarged with few sparse plumodenticulate setae (Se); apex (A) with wrinkles forming apical girdle (Ag), large mesial process (Mp) blunt, laterally located.

Figures

Figure 8. Gonopods of Pitho laevigata (A. Milne-Edwards, 1875) in pleonal view. (A) left first gonopod in stereomicroscopy; (B) right first gonopod in scanning electron microscopy; (C) left second gonopod in stereomicroscopy; (D) right second gonopod in scanning electronmicroscopy; A, apex;Ag,apicalgirdle;Ba, basis;De,distal end; Mp, mesial process;S, sensillum;Se,setae; Ss,suture.

Figure 9. Gonopodsof Teleophrys ruber (Stimpson, 1871) in pleonal view.(A) left first gonopod in stereomicroscopy;(B) rightfirst gonopod in scanning electron microscopy; (C) left second gonopod in stereomicroscopy; (D) right second gonopod in scanning electron microscopy; A,apex; Ag, apical girdle;Ap, apical plate; Ba, basis;Ec,ejaculatory canal aperture;L1,lateral lobe; M1, mesial lobe; Mp, mesial process; P, protuberance; S, sensillum; Se, setae; Ss, suture; Sp, spine.