M wide, about 30 segments. Prostomium hemispherical, without eyespots, opalescent, translucent (Fig.M wide, about 30

M wide, about 30 segments. Prostomium hemispherical, without eyespots, opalescent, translucent (Fig.
M wide, about 30 segments. Prostomium hemispherical, without the need of eyespots, opalescent, translucent (Fig. 3A). Peristomium rounded, flattening at the position with the mouth, devoid of papillae. Mouth circular, absolutely covered with minute papillae, extends from PubMed ID:https://www.ncbi.nlm.nih.gov/pubmed/18686015 prostomium to edge of second segment.Figure 3. Sternaspis scutata (Ranzani, 87), neotype (RBCM 0054000) A Anterior end, ventral view B Similar, chaetae of initially three chaetigers C Similar, ventrocaudal shield D Paraneotype, ventrocaudal shield, oblique lateral view showing chaetal bundles e Neotype, posterior area, dorsal view F Yet another paraneotype, branchiae removed to show branchial plates G Nontype specimens (IRFASTE 05), ventrocaudal shields. Bars: A .9 mm B .7 mm C, D, F 0.7 mm E, I .three mm G 0.five mm H . mm.Kelly Sendall Sergio I. SalazarVallejo ZooKeys 286: 4 (203)First 3 chaetigers with over 0 bronze, widely separated, slightly falcate hooks, every single with subdistal dark area (Fig. 3B), a lot more evident in Mertansine site smaller specimens. Larger specimens with paler subdistal regions. Genital papillae protrude ventrally from physique wall in between segments 7 and eight. Preshield area with 7 segments, occasionally bearing a bundle of modest, short, fine capillary chaetae laterally. Ventrocaudal shield flat (Fig. 3C), ribbed, with concentric lines; suture restricted to anterior area. Anterior margins truncate, straight; anterior depression deep; anterior keels not exposed. Lateral margins straight, not expanded medially. Fan smooth, markedly projected beyond posterior corners, with margin smooth, barely crenulated (Fig. 3C, D). Marginal shield chaetal fascicles include 0 lateral ones, chaetae in an oval arrangement, and six posterior fascicles, chaetae in a slightly curved arrangement. Chaetae of lateral fascicles hirsute, especially longer ones. Peg chaetae about as long as chaetae of initially lateral chaetal fascicle and stout basally where chaetae emerge from cuticle, giving them a robust spinelike look. Extra chaetae delicate, inside a modest group. Branchiae abundant; interbranchial papillae lengthy, filamentous (Fig. 3E). Branchial plates diverging as halffusiform regions (Fig. 3F). Variation. The ventrocaudal shield (Fig. 3G ) has a fan with a median notch and its lateral components extend beyond the posterior corners level, and this can be a constant pattern seen in all specimens irrespective of size. The pigmentation is deep orange in smaller specimens (Fig. 3G) and becomes reddish in bigger ones (Fig. 3H, I). Neotype locality. Izmar Bay, Aegean Sea, Turkey. Remarks. Sternaspis scutata (Ranzani, 87) has been extensively recorded and appears to become the most prevalent species of Sternaspis. This really is the oldest named species and researchers have suggested that S. scutata is really a senior synonym of a minimum of a few of the other species of the household (Ushakov 955; Hartman 959), others have recommended that it’s in actual fact the only species in the family members (Pettibone 954). These suggestions are so widespread that over half with the worms loaned for this study were labelled as S. scutata. On the other hand, the species has not been redefined and in an effort to clarify the present confusion, a neotype is proposed, described and its diagnostic attributes are illustrated (ICZN 999, Art. 75.three.5.3.three). Abbot Camilo Ranzani didn’t deposit the supplies he described because it was not a current practice through those instances (ICZN, Art. 75.3.4). Having said that, Ranzani’s figure 3 clearly indicates that the ventrocaudal shield had a median, posterior notch, which is consistent with.