On the South American species of the genus Meridiosignum (Crustacea: Isopoda: Asellota: Paramunnidae)

Meridiosignum undulatum n. sp. and M. disparitergum n. sp. are described from off the Río de la Plata estuary. These two new species are easily distinguished from other members of the genus Meridiosignum in having the lateral margins of pereonites 2 and 3 bilobed (the concavity is much more pronounced in M. disparitergum), and those of pereonite 4 produced into a single process. The terminal male instar of Meridiosignum menziesi (Winkler, 1994 Winkler, H. 1994. Paramunnidae (Crustacea: Isopoda: Asellota) from the Magellan Strait.. Zool J Linn Soc., 110: 243–296. [Crossref] , [Google Scholar]) is described, and this species is herein reported from the Beagle Channel and Puerto Deseado. All the species currently placed in Meridiosignum were found in shallow waters in the southern hemisphere, M. undulatum n. sp. and M. disparitergum n. sp. being the species recorded at the greatest depth (129 m).     

Taxonomy of the genus Thoracostrongylus Bernhauer (Coleoptera: Staphylinidae) with descriptions of five new species from China

The Chinese species of the genus Thoracostrongylus Bernhauer, 1915 Bernhauer, M. 1915. Neue Staphyliniden aus Java und Sumatra. Tijdschr Entomol., 58: 213–243.  [Google Scholar] are reviewed. Five new species are described: Thoracostrongylus acerosus sp. nov. from Sichuan and Hubei, Th. aduncatus sp. nov. from Yunnan, Th. baoxingensis sp. nov. from Sichuan, Th. diaoluoensis sp. nov. from Hainan and Th. fujianensis sp. nov. from Fujian. Thoracostrongylus birmanus (Fauvel, 1895 Fauvel, A. 1895. Staphylinides nouveaux de l'Inde et de la Malaisie. Rev Entomol., 14: 180–286.  [Google Scholar]) is recorded from China for the first time. Male genitalia and other critical characters are illustrated not only for the new species but also for the remaining Chinese species, namely Th. formosanus Shibata, 1982 Shibata, Y. 1982. A new species of the genus Thoracostrongylus Bernhauer from Taiwan (Coleoptera: Staphylinidae). T Shikoku entomol Soc., 16: 71–76.  [Google Scholar], Th. malaisei Scheerpeltz, 1965 Scheerpeltz, O. 1965. Wissenschaftliche Ergebnisse der Schwedischen Expedition 1934 nach Indien und Burma. Coleoptera Staphylinidae (except Megalopsidiinae et Steninae). Ark Zool. (2), 17(2): 93–371.  [Google Scholar], Th. miyakei Bernhauer, 1943 Bernhauer, M. 1943. Neuheiten der palaearktischen Staphylinidenfauna. Mitt münch entomol Ges., 33: 169–188.  [Google Scholar] and Th. velutinus Scheerpeltz, 1965 Scheerpeltz, O. 1965. Wissenschaftliche Ergebnisse der Schwedischen Expedition 1934 nach Indien und Burma. Coleoptera Staphylinidae (except Megalopsidiinae et Steninae). Ark Zool. (2), 17(2): 93–371.  [Google Scholar].     

Two new species of Hudsonimyia Roback, 1979 (Diptera: Chironomidae: Tanypodinae) from Neotropical Region unveiled by morphology and DNA barcoding

Two new species of Hudsonimyia Roback, 1979 Roback, SS. 1979. Hudsonimyia karelena, a new genus and species of Tanypodinae, Pentaneurini. Proc Acad Nat Sci Philadelphia., 131: 1–8. [Web of Science ®] , [Google Scholar] (Diptera: Chironomidae: Tanypodinae) are described and illustrated as male, pupa and larva. The generic diagnosis of pupa is emended and keys to males, pupae and larvae of known species are provided. The different life stages for one of the described species were associated by DNA barcodes.     

Redescription of Alloclubionoides paikwunensis (Kim and Jung, 1993) and a new spider species Alloclubionoides solea sp. nov. from Korea (Araneae: Agelenidae)

The identity of Alloclubionoides paikwunensis (Kim and Jung, 1993 Kim, JP and Jung, CH. 1993. A new species of the genus Coelotes (Araneae: Agelenidae) from Korea. Kor Arachnol., 9: 1–6.  [Google Scholar]) is clarified by examination of type specimen and the female of the species is redescribed with additional collections and illustrated. Alloclubionoides solea sp. nov. from the Dadohaehaesang Marine National Park, southern Korea is described with detailed illustrations, leg spination, trichobothrium patterns and scanning electron micrographs. The new species can be distinguished from other Alloclubionoides spiders by the male palpal organs, which feature an embolus with a crescent-shaped distal part surrounded by a large conductor, and by the female genitalia, which feature a large genital opening situated in the side of atrium and broadly spiral copulatory ducts. Furthermore, Coelotes samaksanensis Namkung, 2001 Namkung, J. 2001. The spiders of Korea, 648Seoul (South Korea): Kyo-Hak Pub. Co.. in Korean [Google Scholar] is found to be a junior synonym of A. paikwunensis.     

Three new species of Yponomeutinae (Lepidoptera: Yponomeutidae) from China with faunistic supplements and an updated list of the Chinese species of the subfamily

To improve our understanding of the Yponomeutinae of China, the specimens of three institutional collections were examined to discover new taxa and all previous records were reviewed. As a result, we recognize a total of 71 species of Chinese Yponomeutinae, including three new species: Cedestis leucopterostigmatis n. sp., Euhyponomeutoides spadix n. sp., and Yponomeuta zebra n. sp., and a new record of Zelleria japonicella Moriuti from China. Unavailability of three species names in the most recent list: Yponomeuta hebeiensis Liu, 1984, Yponomeuta nigrofasciatus Yang, 1979 Yang, JK. 1979. Moths of north China, Vol. 1, Harbin, , China: Northeast Agricultural University Press.  [Google Scholar], and Yponomeuta ulingensis Yang, 1979 Yang, JK. 1979. Moths of north China, Vol. 1, Harbin, , China: Northeast Agricultural University Press.  [Google Scholar], is suggested. Photos of adults and genitalia are provided for all species described.     

Four new and one known species of Belondiroidea (Dorylaimida: Nematoda) from Japan

Four new and one known species of Belondiroidea Thorne, 1939 Thorne, G. 1939. A monograph of the nematodes of the superfamily Dorylaimoidea. Capita Zool., 8: 1–261.  [Google Scholar] are reported from Japan. Axonchium mizukuboi sp. nov. has isthmus-like constriction between two parts of pharynx; rectangular pars refringens vaginae; spicules with thickened distal end; seven ventromedian supplements starting above the range of spicules and hemispheroid tail. Axonchium japonicum sp. nov. also has short isthmus-like structure between two parts of pharynx; triangular pars refringens vaginae; massive spicules with thickened distal tip and 9–10 ventromedian supplements. Dorylaimellus (D.) japonicus sp. nov. has 0.9–1.0 mm long body; poorly flanged odontophore; pharyngeal expansion 54–65% of neck length; 22–25 μm long, strongly ventrally arcuate spicules; four ventromedian supplements and elongate conoid tail with subacute terminus. Dorylaimellus (Axodorylaimellus) paracrassidens sp. nov. has 0.4–0.5 mm long body; slender odontostyle; pharyngeal expansion 48–57% of neck length; transverse vulva; long prerectum and short conoid tail. Axonchium amplicolle Cobb, 1920 Cobb, NA. 1920. One hundred new nemas. Contrib Sci Nematol., 9: 217–343.  [Google Scholar] is reported for the first time from Japan.     

Redescription and life cycle of Eutima sapinhoa Narchi and Hebling, 1975 (Cnidaria: Hydrozoa,Leptothecata): a hydroid commensal with Tivela mactroides (Born) (Mollusca,Bivalvia, Veneridae)

The commensal hydroid Eutima sapinhoa Narchi and Hebling, 1975 Narchi, W and Hebling, N. 1975. The life cycle of the commensal Hydromedusa Eutima sapinhoa n. sp. Marine Biology, 30: 73–78. [Crossref] , [Google Scholar] lives attached to the mantle, gills, labial palps and foot of the bivalve Tivela mactroides. The solitary polyps bud off medusae that become free, leaving the host through the exhalant water current. Newly liberated medusae were cultivated in the laboratory, attaining 7.8?mm in bell height, 13.3?mm in diameter and having eight marginal tentacles, while developing the typical eutimid medusa characters of a long peduncle, four radial canals and marginal statocysts with many statoliths. Eutima sp., previously reported from Florida, USA, is probably referable to Eutima sapinhoa. Like the other bivalve-inhabiting species of Eutima [E. ostrearum (Mattox and Crowell, 1951 Mattox, N. T and Crowell, S. 1951. A new commensal hydroid of the mantle cavity of an oyster. Biological Bulletin, 101: 162–170. [Crossref] , [Google Scholar]) and Eutima sp.] from the Atlantic Ocean, Eutima sapinhoa has no trace of marginal cirri, thereby differing from the eutimid medusae of the Pacific Ocean.