TABLE 2 in A new species of Euborlasia Vaillant, 1890 (Nemertea: Pilidiophora) from Southwestern Atlantic Ocean

TABLE 2. List of selected morphological characters used in the original descriptions and the subsequent re-descriptions of 10 species of the genus Euborlasia (modified from Hookabe & Kajihara 2020a), except E. gotoensis and E. proteres. Abbreviations: cm, circular muscle layer of body wall; dg, dermal glandular layer; ilm, internal longitudinal muscle layer of body wall; olm, outer longitudinal muscle layer of body wall. SpeciesExternal colorationBands on body surfaceRemarks on internal morphologyReferenceE. elizabethaeAnterior two thirds of head, pure white, with olive-green specks; body mottled, with deep madder brown; whitish dots on both surfaces; cerebral ganglia slightly visible as reddish regionPresent, pinkish whiteProboscis with two muscle crossesMcIntosh (1873–1874); Bürger (1895b); Herrera-Bachiller et al. (2015)E. inmaculataAnterior tip of head mottled, with lighter brownish dots but not completely whitish; blue to black-colored bodyAbsentolm twice as thick as cm and ilm; rhynchocoel narrowBürger (1892, 1895b)E. maximaIn fixed specimens, head much paler, with numerous brown dots; body dark brown with greenish tingeunknownExtremely massive olm, 2.5 mm thick; cm 0.75 mm thick; all muscle layers in intestinal region comparatively thinCoe (1905, 1940, 1944)E. nigrocinctaHead whitish or slightly pinkish; two color variations (darker brown and rosy flesh)Present, darker brownProboscis with one muscle crossCoe (1940); Kajihara & Nishi (2013)E. hancockiIn fixed specimens, body gray or pale olive green, thickly speckled and blotched with dots and flecks dark brown or black; dots more widely dispersed on headAbsentunknownCoe (1940, 1944)E. variegataBackground orange; bluish-black longitudinal bands; black pigments covering dorsal and ventral surfacesPresent, bluish blackBriefly described based on a headless fragment of a female specimen; bluish black pigment confined to cutis; epithelium and muscular layer colorless; intestinal epithelium and ovary deeper yellow or orangeCoe (1944)E. obscuraVery dark and uniformly pigmented body with a caudal cirrusAbsentProboscis probably without muscle cross; diagonal musculature between olm and cm absent; thick connective tissue between dg and olmFriedrich (1958, 1970)E. thoriunknownunknownProboscis with two muscle crosses; connective tissue between dg and olm thin; diagonal musculature between olm and cm absentFriedrich (1958, 1960, 1970)E. maycoliAnterior tip of head whitish; background reddish brown; paler dots on both surfacesAbsentProboscis without muscle cross; connective tissue between dg and olm thickHookabe & Kajihara (2022)E. lidiae sp. nov.Dorsal and ventral sides of head with numerous brown or black spots on whitish background color; anterior tip of head whitish; dorsal side of rest of body predominantly brown olive with light inclusions; ventral side of body in foregut region also dark spotted, and intestinal region creamy pink, with sparse pale olive spotsAbsentProboscis without muscle crossPresent study ......continued on the next page