Caprella cavediniae Krapp-Schickel & Vader, 1998

Lang, Carola, Krapp, Traudl & Melzer, Roland R., 2007, Postembryonal development in Caprellidae: SEM description and comparison of ready-to-hatch juveniles and adults of two Mediterranean skeleton shrimps (Crustacea: Amphipoda), Zootaxa 1605 (1), pp. 1-32 : 3-4

Caprella cavediniae Krapp-Schickel & Vader, 1998

Caprella acanthifera var. acanthifera Cavedini, 1982, p. 494 , fig. 1; Krapp-Schickel, 1993: 774–777 (partim), fig. 528 (completely), 529 (partim); Caprella cavedinae Krapp-Schickel & Vader, 1998: p. 961 –963, fig. 7.

Material. — Croatia, Istria, Rovinj, „Cross Bay” (45°07.063'N, 13°36.994'E) and „Saline Bay” (45°07.122'N, 13°37.196' E). Phytal with Cystoseira and Halopteris . 0– 2m. 11.–13.12.04. Many subadult and adult females and males. Carola Lang, Roland Melzer, Roland Meyer leg.

— Croatia, Istria, Cape Savudrija (15°28'N, 13°23' E). Phytal on stones. 0–1m. 22.–27.05.05 Many females, males and approx. 70 ready-to-hatch juveniles in marsupia. Leonie Meltzer, Roland Melzer leg.

— Italy, Tuscany, Giglio Isl., Bay of Campese (42° 22.10' N, 10° 52.80' E). From Halopteris , at 0–5m, 08.–13.04.05 Many subadult and adult females and males. Carola Lang, Roland Melzer, Roland Meyer, Christian Pilz, Andrea Salmen, Stefan Friedrich, Jana Martin, Markus Unsöld leg. The collected material is deposited at the Bavarian State Collection of Zoology ( ZSM), numbers A 20061391 –A 20061407 .

General diagnosis. Swimming setae on A2 absent ( Fig. 1 , 2A). Most adult males from Savudrija are strongly covered with algae (Fig. 2A, C) that can easily be confused with hairs ( Krapp-Schickel & Vader, 1998), which are especially dense on Pr2 and 3 as well as on Gn2 (Fig. 2A). Blunt dorsal tubercles with apikal, „raspberry”-like surface are often found on Pr2–7, at least on Pr2 (Fig. 2C; 2G, H) ( Krapp-Schickel & Vader, 1998). Propodus of Gn 2 in males strongly curved and equipped with 2 swollen bulges as well as a prominent, pointed poison tooth (Fig. 2A) ( Krapp-Schickel & Vader, 1998). Gills oval to elongate ( Fig. 3I ) ( Krapp-Schickel & Vader, 1998).

Colour: Green, yellow or reddish, sometimes with black or brown spots ( Krapp-Schickel & Vader, 1998). The material of Cape Savudrija is pink and white. Adult males with small black spots laterally on each side of Pr2 and a single larger spot on Pr3.

Figures

FIGURE 1. Caprella cavediniae Krapp-Schickel & Vader, 1998 (Italy, Island of Giglio). SEM of the habitus of ♀ adults and first juvenile stage. A. lateral habitus, ♀ adult. arrowheads dorsal tubercle. Bar: 1mm. B. lateral habitus, first juvenile stage. Bar: 200µm. g gill; MP mouthparts; Oost oostegit.

FIGURE 3. Caprella cavediniae Krapp-Schickel & Vader, 1998 (Istria, Cape Savudrija (A–F, I, J) and Italy, Island of Giglio (G, H)). SEM of ♀ adults. A. left Md, lateral view. arrowheads fields of fine setae. Bar: 20µm. B. accessory spines, detailed view. arrowheads axillary setae. Bar: 10µm. C. Mx1. large arrowhead ventromarginal setae; small arrowheads fields of fine setae on outer plate; arrow seta on 1. article of palp. Bar: 20µm. D. spines on Mx1 palp. arrowheads serrated ridge. Bar: 2µm. E. Mx2, ventral view. arrowheads fine setae on inner plate. Bar: 20µm. F. distal setae on Mx2, outer plate. arrowheads, arrow 3 different types of setae. Bar: 10µm. G. Pr 5, lateral view. arrowheads dorsal tubercle; arrow ventrodistal genital openings. Bar: 100µm. H. tubercle, enlarged view. arrowheads 3 setae. Bar: 2µm. I. gill on Pr 3, lateral view. Bar: 100µm. J. gill basis, detailed view. arrowheads 2 plumose setae. Bar: 10µm. acS accessory setae; inpl inner plate; Lmob lacinia mobilis; g gill; MxP Maxilla 1 palp; Oost oostegit; outpl outer plate; Pinc processus incisivus.