Glossing over cryptic species: Descriptions of four new species of Glossodoris and three new species of Doriprismatica (Nudibranchia: Chromodorididae) Matsuda, Shayle B. Gosliner, Terrence M. Zootaxa 2018 2018-07-12 4444 5 501 529 37DC9 Matsuda and Gosliner Matsuda & Gosliner 2018 [151,684,1159,1185] Gastropoda Chromodorididae Doriprismatica GBIF Animalia Nudibranchia 20 521 Mollusca species rossi sp. nov.    Doriprismaticasp. 5 Gosliner et al. 2015: p. 240, upper left photo.   Doriprismaticasp. B Matsuda & Gosliner 2017.    Typematerial.  Holotype: CASIZ-192281, one specimen, dissected, 31 mmpreserved, Saudi Arabia, Red Sea, West Manghar Island, night dive, 8 March 2013, T. Gosliner, Red Sea Biodiversity Cruise 2013, orig. fixative 95% EtOH. This specimen was tissue sampled (foot) for DNAanalysis in Matsuda & Gosliner (2017), GenBank: KT600690( COI).   Etymology.  Doriprismatica rossiis named after the first author’s brother, Ross Kyo Matsuda.   Distribution. Known only from the Saudi Arabian Red Sea.  External morphology. The mantle of  Doriprismatica rossisits high on the sides of the body above the foot and tapers posteriorly ( Fig. 11C). The mantle has small conical tubercles over its entire surface. The mantle edge has the characteristic semi-permanent undulations, including two sets of permanent large folds, the first slightly behind the rhinophores and the second anterior to the gill. The mantle and foot are a burgundy-charcoal color that is covered with small white spots that are denser towards the edge of the mantle. Larger burgundy spots speckle the mantle over the white. A black band runs the edge of the mantle and is bordered on both sides first by thin electric blue bands and then followed by thicker mustard colored bands ( Fig. 2I). The gill is two-thirds of the way back on the mantle and consists of approximately 14 unipinnate lamellae arranged in a spiral and forming an arc that opens posteriorly around the anus. Some of the lamellae have branching tips of up to four prongs while others are single and they become shorter at the ends of the arch. All of the gill branches are held close to the surface of the mantle. The gill stalk is a greener mustard color that fades to white, and two dark lines run up the inward and outward facing sides midway-up that join at the tip. The base of the rhinophores are a cream and mustard color and the rhinophores are dark charcoal that is dusted with white that gives them a frosted appearance. The rhinophores have approximately 15 closely packed lamellae. Behind the rhinophores are two burgundy-charcoal patches on the mantle that are not covered in white dots. The genital opening is on the right side of the body below the mantle and behind the rhinophores.   Internal anatomy. Radular structure( Fig. 14A–E). The oral tube is approximately three times as long as the buccal bulb ( Fig. 13E). The radular ribbon is long and of medium width ( Fig. 14D) (radular formula for 35 mmpreserved specimen is approximately 165 x 25.0.25). A row of rachidian teeth is absent ( Fig. 14A). The first lateral tooth has a long central cusp with three to four, large, well-defined downward-pointing denticles on both sides. The inner and mid-lateral teeth ( Fig. 14B) have a longer central cusp with the same number of denticles on the outer edge, however with no denticles on the inner edge. The outer teeth ( Fig. 14C) are only slightly reduced and have only one denticle on the outer edge. The jaw plates are composed of long bifid rodlets that are slightly curved ( Fig. 14E).  Reproductive system( Fig. 13D). The vagina is of medium length and narrow and connects with the receptaculum seminis duct before reaching the receptaculum seminis sac and bursa copulatrix. The penial bulb is long and convoluted leading to a shorter muscular vas deferens. A long, twisted prostate gland connects to the base of the ampulla adjacent to the albumen gland.   Remarks.  Doriprismatica rossiis sister to  Doriprismatica marinae  sp. nov., and together they are sister to the clade containing  D. atromarginataand  D. sibogae. Doriprismatica rossihas its own unique color pattern and together with  D. paledentatais the only species in the genus with three distinct marginal bands. These two species are unique in having mantle tubercles. The mantle of  D. rossiis more oval that  D. atromarginataand  D. sibogae. The mantle bands are continuous, unlike in  D. atromarginataand  D. sibogaewhose mantle bands include areas with slight interruptions. The mantle bands are similar in color to  D. paladentata, however the bands on  D. paladentataare much lighter and the body is teardrop-shaped with a broader anterior. The mantle of  D. paladentatais covered with white spots, however the overall color of the mantle is a very light cream. The rhinophores and gills of  D. paladentata,  D. atromarginataand  D. sibogaeall stand out dark against the body, which is not the case for  D. rossi. The radula for  D. rossidiffers from that of  D. atromarginataby having a slightly longer central cusp, and resemble more closely those of  D. sibogae( Rudman 1986, fig. 6, specimen from Fiji). The ABGD analysis supports  D. rossias a distinct species ( Fig. 5). The p-distance values between  D. rossiand  D. marinaeis 2%, which while seemingly small, is consistent with the p-distances between and within other species of  Doriprismatica( Matsuda & Gosliner 2017)( Fig. 5). Their general body form is markedly different. The p-distances between individuals of  D. atromarginatais 1% and between specimens of  D. paladentatais 0, and the p-distances that separate  D. atromarginataand  D. sibogaeis 3%.