Free-living marine nematodes in Andhra Pradesh Coast, India Author Sivaleela, Gunasekaran Author Surendar, Chandra Author Kumar, Rubavath Rajendar text Records of the Zoological Survey of India 2021 121 2 283 301 journal article 10.26515/rzsi/v121/i2/2021/151251 2581-8686 13186309 25. Microlaimus marinus Schumann Stekhoven & De Coninck 1933 * (Figure 16A-C) 1933 Calomicrolaimus marinus Schulze. Zool. Jahrb. Jena (Syst) 62 : 331-430 Figure 51. 1933. Microlaimus marinus Schumann Stekhoven & De Coninck Bull. Mus. royal d’ Hist. Nat. Belg./Med. Kon. Natuurhist. Mus. Belg., 9 (4): 1-15, 5 plates. Material examined : 2 ♂ , (Reg. No. N. 265), Coringa, 3.iv.2016 , Coll. G. Sivaleela. Diagnostic characters : This species is characterized by the presence of development of buccal cavity, length of cephalic setae structure, position, and size of the amphids and the form of the copulatory structure. Description : Body length is 1.3mm . Maximum diameter is of body 29 µm. Cuticle with transverse rows of dots. Six small and four longer 6 µm cephalic setae are present. Amphids are 7 µm wide. Buccal cavity is with one dorsal and two ventral teeth. Tail is 3 a.b.d in length. Spicules are 32 µm arcuate. Gubernaculum 18 µm in length.