Table 3 in Sigambra sundarbanensis sp. nov. (Annelida, Pilargidae) from the Indian sector of Sundarbans Estuarine System, with remarks on parapodial glands

Table 3 (continued). Main distinguishing characters of accepted species of Sigambra Müller, 1858.
141516171819202122232425SpeciesS. tentaculata (Treadwell, 1941)S. diazi Salazar- Vallejo, Rizzo, León-González & Brauko, 2019S. grubii Müller, 1858S. hernandezi Salazar-Vallejo, Rizzo, León- González & Brauko, 2019S. olivai Salazar- Vallejo, Rizzo, León-González & Brauko, 2019S. constricta (Southern, 1921)S. ocellata (Hartmann Schröder, 1959)S. magnuncus Paterson & Glover, 2000S. ligneroi Salazar-Vallejo, Rizzo, León- González & Brauko, 2019S. healyae Gagaev, 2008S. wassi Pettibone, 1966S. robusta (Ehlers, 1908)Body size: Length (L), width (W) and no. of chaetigersL: 11, W: 0.62 Chaetiger: 95L: 7.5, W: 1.5 Chaetiger: 41L: 11.5, W: 2 Chaetiger: 82L: 9, W: 2 Chaetiger: 76L: 20, W: 2.8 Chaetiger: 152L: 19, W:? Chaetiger:105 or moreL: 1.5, W? Chaetiger: 25L: 3.7, W: 0.73 Chaetiger: 33L: 17, W: 4 Chaetiger: 49L:?, W: 0.7 Chaetiger:?L: 45–70, W: 4–5 Chaetiger: 107–192L: 54, W:? Chaetiger: 182Relative size of dorsal and ventral cirriDorsal> VentralDorsal> VentralDorsal> VentralDorsal> VentralDorsal> VentralDorsal> VentralSubequalSubequalDorsal> VentralDorsal> VentralDorsal> VentralDorsal> VentralVentral cirri (chaetiger 2)AbsentAbsentAbsentAbsentAbsentAbsentAbsentAbsentPresentPresentPresentPresentNo. of marginal papillae1413–16141415148888815 or 16Length of median antenna compared to lateral antennae1.5–2 times longerTwiceLongerTwiceTwiceNearly 2 times longer2 times longerBarely longerTwice1.5 times longerSlightly longer–Median antenna reaching up to chaetiger–5 to 722 to 32 to 31 to 2–3 to 41 to 2?––First appearance of dorsal hook from chaetiger4–54–520283830–406–7326–2842743–70Notopodial capillariesPresentPresentAbsentAbsentAbsentPresent in posterior chaetigers–Present 1 in anterior and 2 in posterior segmentsAbsentPresent from chaetiger 20AbsentAbsentRemarksPresence of tooth like peristomial papillaeDorsal cirri tapered without basal Median antenna enlargement, is medium ventral cirri sized and 4–6 in median and hookless posterior posterior chaetiger chaetiger are long as neurochaetal lobeMedian antenna shorter, two hookless chaetiger in the end of the bodyNo constriction on chaetiger 4, no capillaries in the posterior chaetigerBody with a constriction at chaetiger 4The smallest species of this genusMedian antenna is twice as long as laterals, dorsal cirri is three times Only species from longer than deepest zone ventral ones on chaetiger 1, 8 regular papillae on pharynxTwo types of acicula in the notopodia, segmentation of the prostomium–Notopodia without capillariesReferenceMoreira & Parapar 2002Salazar-Vallejo et al. 2019Salazar-Vallejo 1990Salaza-Vallejo et al. 2019Salazar-Vallejo et al. 2019Southern 1921Licher & Westheide 1997; Nishi et al. 2007Paterson & Glover 2000Salazar-Vallejo et al. 2019Gagaev 2008Pettibone 1966; Salazar-Vallejo et al. 2019Nishi et al. 2007