New descriptions of enchytraeid species (Clitellata: Enchytraeidae) from Korea Author Torii, Takaaki Author Akagi, Tomohiro Author Uchino, Toru Author Kobayashi, Tohru text Journal of Species Research 2018 7 1 80 91 http://dx.doi.org/10.5281/zenodo.7733357 journal article 10.12651/JSR.2018.7.1.080 2713-8615 13161412 3. Fridericia bulboides Nielsen and Christensen, 1959 ( Fig. 5 ) Fridericia bulboides Nielsen and Christensen, 1959: 72- 75 ; Dózsa-Farkas & Hong, 2010: 31 , Table 1; Dózsa-Farkas, Felföldi and Hong, 2015: 173 , Table 1, for complete synonym assign: Schmelz (2003) . New Korean name: Myohyang-cham-ae-jireongi ( MȒ ḂOiNjffiḍ ) Material examined. Korea , Jeollabuk-do , Buan-gun , Dongjin-myeon , soil in a rice paddy field of agronomical fields ( 35°46′05.7″N , 126°43′14.7″E , 17 m asl .), 3 April 2014 , Y. Hong coll. ; North Korea , Pyunganbuk-do , Mt. Myohyang , Hyangsan at the branch of Chongchon river , litter layers in deciduous forest, 7 July 1988 , Csuzdi coll. ; North Korea , Pyunganbuk-do , Mt. Myohyang , litter layers in deciduous forest, Isonnam near to a waterfall, 8 July 1988 , Csuzdi coll. Diagnosis. White worms, 5-9 (12) mm long, 0.25 mm wide with 29-38 segments, chaetae straight and distinctly hooked entally, maximum length ca. 40-50 μm preclitellarly, 60-75 μm postclitellarly, inner chaetae in a bundle shorter than outer chaetae, formula: (1,3)4-4,2: 4,(5)-4,2. Clitellum girdle-shaped, cells mostly reticulate. Oesophageal appendage unbranched very long, much coiled in IV-V, extending to VII ( type b) ( Fig. 5A ). Five pairs of preclitellar nephridia from 6/7 to 10/11. Coelomo-mucocytes ( Fig. 5C ) with hyaline matrix at periphery refractile vesicles, type b (according to Möller, 1971 ). Chylus cells between XI-XV, occupying 2 segments. Dorsal blood vessel originating in XIII-XVII, blood colorless. Seminal vesicle absent or small. Sperm funnels ( Fig. 5B ) about 1.5-2 times longer than wide, bursal slits longitudinal. Male copulatory organ small, often flat. Subneural glands absent. Spermathecal ectal glands globular and sessile, ectal duct long, ampullae onion-shaped without diverticula. Typically proximal ducts of spermathaecae fused at entrance into oesophagus ( Fig. 5D ). 1- 2 eggs mature at a time. Fig. 5. Fridericia bulboides . A. Oesophageal appendage; B. Sperm funnel; C. Coelomocytes; D. Spermathecae. Scale bars: 50 μm. Remarks. Genus Fridericia Michaelsen, 1889 is currently composed of more than 100 valid species. F. bulboides differs from other small Fridericia species with onion-shaped spermathecal ampullae fused one common opening into oesophagus, 4 chaetae in preclitellar bundles, type b coelomo-mucocytes, and characteristic b type oesophageal appendages ( Cech and Dózsa-Farkas, 2005 ). Habitat and distribution. Fridericia bulboides is one of the most common species in soil with, a cosmopolitan distribution. Found in limy to sandy, dry and moist, nutrient-rich and nutrient-poor soils. Also found in aquatic, salt marshes, and freshwater habitats ( Schmelz, 2003 ). Deposition. NIBRIV0000544612. Genus Hemifridericia Nielsen and Christensen, 1949 New Korean name: Aegi-ae-jireongi-sok ( OinjOiNjffiḍẃ )