46 research outputs found
Uruma Naruse, Fujita & Ng 2009
No full textUruma Naruse, Fujita & Ng, 2009 (Figs. 6, 7 B) Uruma Naruse, Fujita & Ng, 2009: 60 [type species: U. ourana Naruse, Fujita & Ng, 2009, by monotypy]. Diagnosis. Carapace wide, trapezoidal, margins cristate, but not continuous to external orbital end, epimeral suture just inferior to carapace proper; surface smooth, glabrous. Front narrow, deflexed medially, triangular in frontal view. Orbit oblique, mesial part of supraorbital margin placed more posteriorly than external orbital end; orbital margins entire, outer part granulated, infraorbital margin mesially terminating in sharp tooth; supraorbital margin demarcated from antennular fossa by obtuse angle; supraorbital margin demarcated from antennular fossa by acute tooth; infraorbital and supraorbital margins not continuing laterally beyond orbit proper. Eyes short, mobile, fully occupying orbit. Epistome short, medially sunken. Maxilliped 3 covering about 4 / 5 of buccal cavern. Thoracic sternites 1 and 2 completely fused, sternite 1 tooth-like, directed dorsally at proximal end of buccal cavern; sternites 2 and 3 demarcated by deep groove; sternites 3 and 4 fused, lateral parts marked by very shallow depressions and pits; sternites 4–8 demarcated by narrow lateral grooves at outside of sternal cavity, grooves ending at lateral parts of sternal cavity; sternal cavity depressed medially, no clear longitudinal groove. Cheliped merus with large transverse and triangular lobe on subdistal part of dorsal margin. P 2–4 similar in shape, P 3 longest; meri about 3 times as long as high, about 1.5 times length of propodus and carpus length combined; carpus longer than propodus. P 5 merus slightly longer than carpus and propodus combined, about twice as long as high, just reaching proximal half of P 4 merus; distal end of ischium and proximal end of merus each with single sharp tooth on flexor margin. P 2–5 all with single pair of short, sharp claw on distoflexor angle of propodi; dactyli very short, claw-like. Male abdomen with all somites freely articulating, first somite widest. Thoracic sternite 8 exposed when abdomen closed, somite 3 to telson forming triangular outline. G 1 straight, slender, distally tapering incurved. G 2 small, about ¼ length of G 1. Included species. Monotypic. Material examined. Uruma ourana Naruse, Fujita & Ng, 2009: RUMF-ZC- 907, holotype male, cl. 4.2 mm, cw. 9.2 mm, Oura Bay, Okinawa, Ryukyu Is., Japan, 8 m, from a tube of unidentified worm, coll. M. Obuchi, 28 July 2007. Remarks. Uruma ourana was recently described in detail by Naruse et al. (2009) and is presently known only from the male holotype collected from Okinawa.Published as part of Ahyong, Shane T. & Ng, Peter K. L., 2009, Aphanodactylidae, a new family of thoracotreme crabs (Crustacea: Brachyura) symbiotic with polychaete worms, pp. 33-47 in Zootaxa 2289 on pages 44-46, DOI: 10.5281/zenodo.19133
Uruma Naruse, Fujita & Ng, 2009, n. gen.
No full text<i>Uruma</i> n. gen. <p> <b>Type species.</b> <i>Uruma ourana</i> <b>n. sp.</b> by present designation.</p> <p> <b>Diagnosis.</b> Carapace wide, trapezoidal; lateral, anterolateral margins cristate, but becoming poorly defined lateral to orbits. Front narrow, deflexed medially, deflexed part triangular in frontal view. Orbit oblique, mesial part of supraorbital margin placed more posteriorly than external orbital end; orbital margins entire, outer part granulated, infraorbital margin mesially terminated as sharp tooth. Epistome short, medially sunken. Eyes short, mobile, fully occupying orbit. Third maxillipeds covering about four-fifths of buccal cavern; ischium and merus distinctly separated by horizontal suture, ischium slightly longer than merus, palp (carpus, propodus, dactylus) attached to medial concave part of distal margin of merus, each segment of palp attached to distal end of proximal segment. Thoracic sternites 1/2 completely fused, sternite 1 tooth-like, directed dorsally at proximal end of buccal cavern; sternites 2/3 demarcated by deep groove; sternites 3/4 fused, lateral parts marked by very shallow depressions, pits; sternites 4–8 demarcated by narrow lateral grooves at outside of sternal cavity, grooves ending at lateral parts of sternal cavity; sternal cavity depressed medially, no clear longitudinal groove. Penis distinctly sternal, opening at anterior margin of sternite 8, adjacent to posterior margin of sternite 7. Cheliped merus with large transverse, triangular lobe on subdistal part of dorsal margin. P3 to P5 similar in shape, P4 longest; merus about two-thirds of respective carpus to dactylus length; carpus longer than propodus. P5 leg just reaching only proximal half of P4 merus; distal end of ischium, proximal end of merus each with single sharp tooth on flexor margin. All ambulatory legs with single pair of short, sharp claw on distoflexor angle of propodi; dactyli very short, claw-like. Male abdomen with all somites freely articulating, first somite widest, thoracic sternite 8 exposed when abdomen closed, third somite to telson forming triangular outline. G1 straight, slender, distally tapering, incurved. G2 very short.</p> <p> <b>Etymology.</b> The new genus is named after the Ryukyuan word <i>uruma</i> (“Okinawa” or “Ryukyus”), which literally means “coral” (<i>uru</i>) and “island” (<i>ma</i>). The gender is neuter.</p> <p> <b>Remarks.</b> Although <i>Uruma</i> <b>n. gen.</b> has an unusual physiognomy (Fig. 1), it shares a number of key characters with <i>Aphanodactylus</i> Tesch, 1918. In both genera, the ischium and merus of the third maxillipeds are subquadrate, the palp of the third maxilliped is attached to a median concave part of the distal margin of the merus, with the propodus and dactylus of the palp connected to the distal end of the respective proximal segment (Figs. 2 b, 3b). <i>Uruma</i> <b>n. gen.</b> and <i>Aphanodactylus</i> also share diagnostic orbital characters: the orbital margins are entire, the infraorbital margins are terminated mesially as a sharp inner tooth, the external orbital corners are not connected to anterolateral margin of the carapace, and suborbital cristae are absent (Figs. 2 a, 3a). Furthermore, both genera have slender and straight G1s except for gently incurved distal tip, freely articulating male abdomens with almost straight lateral margins, and distally rounded telson being slightly longer than the sixth abdominal somite (Fig. 4 a, b). Both genera also share the characteristic, very short ambulatory dactyli (Fig. 3 e–g). <i>Uruma</i> <b>n. gen.</b> is distinct in that all ambulatory legs are almost subcheliform, the short dactylus being bracketed by strong claws at the distoflexor angle of the propodus. In preserved specimens, the dactylus can be folded proximally as far back as between the tips of a pair of distoflexor claws of the propodus. This structure is presumably to cling onto the host worm and/or its tube. On the other hand, the ambulatory dactyli of <i>Aphanodactylus</i> are short and not bracketed by claws (see Tesch 1918; Rathbun 1932; Edmondson 1962; Konishi & Noda 1999; Ng <i>et al.</i> 2009). In <i>A. loimiae</i> and one undescribed species of <i>Aphanodactylus</i> (Ng & Naruse, manuscript), there are 2–3 sharp claws on the distoflexor angle of the ambulatory propodus, which could be homologous with the claws of <i>Uruma</i> <b>n. gen.</b> but it is much less developed and not as prominent. Nevertheless, the form of the third maxillipeds, ambulatory legs and male abdomen suggest a relatively close relationship with <i>Aphanodactylus</i>. <i>Gandoa</i> (as <i>Voeltzkowia</i>), with only one species, <i>Gandoa zanzibarensis</i> (Lenz, 1905), is very poorly known and represented by only one 5.0 by 8.0 female obtained from Zanzibar (Fig. 5; Lenz 1905: 364, pl. 47 figs. 9–9c). Compared to <i>Uruma</i> <b>n. gen.</b>, <i>Gandoa</i> has a proportionately more rectangular carapace (trapezoidal in <i>Uruma</i>), the orbits are incomplete, with supra- and infraorbital margins meeting far from tip of cornea (complete in <i>Uruma</i>), the third maxilliped ischium is proportionately longer, and the ambulatory legs much shorter, with the short dactylus not bracketed by claws on the propodus (longer ambulatory legs with claws on propodus in <i>Uruma</i>).</p> <p> As discussed at length by Ng <i>et al.</i> (2008), <i>Aphanodactylus</i> and <i>Gandoa</i> may eventually be referred to their own family. <i>Uruma</i> <b>n. gen.</b> should also be placed in the same family. The phylogenetic relationships of these genera should then also be reappraised. For the moment, we tentatively assign <i>Uruma</i> <b>n. gen.</b> to the Pinnotheridae <i>sensu lato</i>.</p> <p> Members of <i>Sakaina</i> (Pinnotherinae) most closely resemble <i>Uruma</i> <b>n. gen.</b> in their external appearance, especially in the transversely elongated carapace, long and stout P2–P4, and very short P5. <i>Uruma</i> <b>n. gen.</b>, however, is readily distinguished from <i>Sakaina</i> by its general shape and the structure of the third maxillipeds, male abdomen, telson and G1. In <i>Uruma</i> <b>n. gen.</b> the merus and ischium of the third maxilliped are clearly articulated from each other and subrectangular in shape (Figs. 2 b, 3b), the lateral margins of the male abdomen and telson are gradually convergent distally, the telson is only slightly longer than sixth abdominal somite, the distal margin of the telson is rounded (Fig. 4 a) and the G1 is straight and slightly curved distally (Fig. 4 b). In <i>Sakaina</i>, however, the merus and ischium of the third maxilliped are fused and subtriangular in shape, the lateral margins of the male abdomen are abruptly narrowed from the third abdominal somite, the telson is about three times longer than the sixth abdominal somite, the distal margin of the telson is straight to strongly concave and the G1 is slender and L-shaped (Sakai, 1936: Fig. 103a, c; 1969: Fig. 19; Serène, 1964: Fig. 22).</p> <p> Species of <i>Austinixa</i> Heard & Manning, 1997, <i>Glassella</i> Campos & Wicksten, 1997, <i>Indopinnixa</i> Manning & Morton, 1987, <i>Pinnixa</i> White, 1846, and <i>Pseudopinnixa</i> Ortmann, 1894 (all Pinnotherelinae) also have transversely elongated carapace and short P5. These pinnothereline genera, however, remarkably differ from <i>Uruma</i> <b>n. gen.</b> in that the ischium of the third maxilliped is distinctly smaller than the merus and the palp is often enlarged. The male abdomen and telson are also different (narrow subrectangular in <i>Austinixa</i>, e.g. Manning & Felder 1989: Figs. 2 h, 3h, 5g, 7g, 9g, 10d, 12d; narrow abdomen with rounded wide telson in <i>Indopinnixa</i>, e.g. Davie 1992: Fig. 1 F; Manning & Morton 1987: Fig. 1 E; narrow to wide abdomen, including fused somites in some species of <i>Pinnixa</i>, e.g. Garth 1957: Figs. 3, 4 E, 5E, 6E, 7E, 8E; Zmarzly 1992: Figs. 6G, 11E, 16C).</p>Published as part of <i>Naruse, Tohru, Fujita, Yoshihisa & Ng, Peter K. L., 2009, A new genus and new species of symbiotic crab (Crustacea: Brachyura: Pinnotheroidea) from Okinawa, Japan, pp. 59-68 in Zootaxa 2053</i> on pages 60-62, DOI: <a href="http://zenodo.org/record/186636">10.5281/zenodo.186636</a>
FIGURE 2. Uruma ourana n. gen., n in A new genus and new species of symbiotic crab (Crustacea: Brachyura: Pinnotheroidea) from Okinawa, Japan
No full textFIGURE 2. Uruma ourana n. gen., n. sp. Holotype, male, 4.2 × 9.2 mm, RUMF-ZC-907. a, cephalothorax, anterior view; b, anterior thoracic sterna, ventral view; c, posterior thoracic sterna, posterior ventral view. Abbreviations: p = penis, pb = press button of abdominal locking mechanism, st 4–8 = thoracic sternites 4–8.Published as part of Naruse, Tohru, Fujita, Yoshihisa & Ng, Peter K. L., 2009, A new genus and new species of symbiotic crab (Crustacea: Brachyura: Pinnotheroidea) from Okinawa, Japan, pp. 59-68 in Zootaxa 2053 on page 63, DOI: 10.5281/zenodo.18663
The acceleration of cosmic-ray protons in the supernova remnant RX J1713.7-3946
No full textCopyright © 2002 Macmillan Magazines LtdR. Enomoto, T. Tanimori, T. Naito, T. Yoshida, S. Yanagita, M. Mori, P. G. Edwards, A. Asahara, G. V. Bicknell, S. Gunji, S. Hara, T. Hara, S. Hayashi, C. Itoh, S. Kabuki, F. Kajino, H. Katagiri, J. Kataoka, A. Kawachi, T. Kifune, H. Kubo, J. Kushida, S. Maeda, A. Maeshiro, Y. Matsubara, Y. Mizumoto, M. Moriya, H. Muraishi, Y. Muraki, T. Nakase, K. Nishijima, M. Ohishi, K. Okumura, J. R. Patterson, K. Sakurazawaq, R. Suzuki, D. L. Swaby, K. Takano, T. Takano, F. Tokanai, K. Tsuchiya, H. Tsunoo, K. Uruma, A. Watanabe & T. Yoshikosh
Design study of CANGAROO-III, stereoscopic imaging atmospheric Cherenkov telescopes for sub-TeV g-ray detection
No full textCopyright © 2002 Elsevier Science B.V. All rights reserved.R. Enomoto, S. Hara, A. Asahara, G. V. Bicknell, P. G. Edwards, S. Gunji, T. Hara, J. Jimbo, F. Kajino, H. Katagiri, J. Kataoka, A. Kawachi, T. Kifune, H. Kubo, J. Kushida, Y. Matsubara, Y. Mizumoto, M. Mori, M. Moriya, H. Muraishi, Y. Muraki, T. Naito, T. Nakase, K. Nishijima, K. Okumura, J. R. Patterson, K. Sakurazawa, D. L. Swaby, K. Takano, T. Tanimori, T. Tamura, K. Tsuchiya, K. Uruma, S. Yanagita, T. Yoshida, T. Yoshikoshi and A. Yukihttp://www.elsevier.com/wps/find/journaldescription.cws_home/523319/description#descriptio
Uruma ourana Naruse, Fujita & Ng, 2009, n. sp.
No full textUruma ourana n. sp. (Figs. 1–4) Material examined. Holotype, male, 4.2 × 9.2 mm, RUMF-ZC- 907, Oura Bay Okinawa, Ryukyu Islands, Japan, 8 m, from a tube of unidentified, possibly polychaete, worm, coll. M. Obuchi, 28 Jul. 2007. Comparative material. Pinnixa penultipedalis Stimpson, 1858: 1 female, 1.8 × 3.6 mm, ZRC 1970.8. 4.10, Nhatrang Bay, Vietnam, coll. Gallardo, 1954. Pinnixa sayana Stimpson, 1860: 2 males, 2.1 × 4.4 mm, 2.5 × 5.6 mm, ZRC 2008.0152, Maceió, Brasil, coll. 1990. Description of holotype. Carapace (Fig. 1 a) wide, trapezoidal, widest at anterolateral margin, CW 2.19 times CL; dorsal surface smooth, glabrous, flat (Figs. 2 a, 3 a), anterior, posterior quarters of carapace sloping downwards, regions poorly defined, epibranchial regions with 3 low protuberances, cervical groove very shallow, H-shaped gastric groove distinct, cardiac region laterally demarcated by grooves. Anterolateral margin strongly produced, continuous to posterolateral margin, proximal three-quarters of carapace gently convergent posteriorly, margin cristate from proximolateral angle to just mesial to anterolateral angle, not continuing to external orbital end (Fig. 3 a); epimeral suture just inferior to carapace margin proper. Front narrow, 0.14 times CW, deflexed medially, deflexed part triangular (Fig. 3 a). Orbit oblique, mesial part of supraorbital margin distinctly placed more posteriorly than external orbital end; orbital margins entire, outer part granular, infraorbital margin mesially ending as sharp tooth (Figs. 2 a, 3 a). Epistome short, medially sunken, posterior margin with sharp median tooth. Milne Edwards’ aperture distinct, upper margin of aperture rimmed, anterior margin of rim fringed with long setae. Eyes (Figs. 2 a, 3 a) short, stout, mobile, fully occupying orbit. Antennule small, folded somewhat obliquely. Antenna (Fig. 3 a) entering orbit, flagellum short, distal segment reaching external orbital end. Third maxillipeds (Figs. 2 b, 3 b) convering about fourfifths of trapezoidal buccal cavern; ischium produced proximolaterally, mid-length slightly longer than merus; merus completely articulated from ischium by horizontal suture, palp (carpus, propodus, dactylus) attached to medial concave part of distal margin of merus, each segment of palp connected to distal ends of respective proximal segments; exopod broad proximally, reaching distal third of merus, flagellum long, exceeding mesial margin of merus. Thoracic sternites 1 / 2 completely fused, sternite 1 tooth-like, directed dorsally at proximal end of buccal cavern; sternites 2 / 3 demarcated by deep groove; sternites 3 / 4 fused, lateral parts marked by very shallow depressions, pits; sternites 4–8 demarcated by narrow lateral grooves at outside of sternal cavity, grooves ending at lateral part of sternal cavity; sternal cavity depressed medially, no clear longitudinal groove (Fig. 2 b, c). Penis (Fig. 2 c) distinctly sternal, opening at anterior margin of sternite 8, adjacent to posterior margin of sternite 7. Chelipeds (Fig. 1) equal, short. Merus triangular in cross section; ventral, dorsal margins with setae, dorsal margin with large subdistal lobe triangular in distal view (Fig. 3 c). Carpus (Fig. 3 c) suboval, outer surface covered with short setae, no inner angle. Chela (Fig. 3 d) small, as long as merus, short setae covering ventral half of palm to proximal part of cutting edge of immovable, movable fingers in outer, inner surfaces; cutting edge of immovable finger concave proximally, distally blade-like, tip hooked; movable finger straight, tip slightly hooked, cutting edge blade-like, slightly dentate proximally. P 2 to P 4 similar in shape, P 4 (Fig. 3 e) longest, combined length of merus to dactylus of P 4 1.08 times CW; merus stout, long, merus of P 4 0.66 times CW, about two-thirds of combined length of respective carpus to dactylus; anterior, posterior margins subparallel, anterior portion covered with short setae, proximal half of anterior margin lined with granules, posterior margin scattered with long setae. Carpus longer than propodus; carpus, propodus with flattened outer surface, covered with short and long setae; distoflexor angle of propodus with a pair of short, sharp claws (Fig. 3 f). Dactyli very short, claw-like (Fig. 3 e, f). P 5 (Fig. 3 g) short, reaching only proximal half of P 4 merus. Ischium with flexor surface extended distally, with subdistal sharp tooth. Merus slightly longer than combined length of respective carpus to dactylus, posterior margin with strong proximal tooth. Carpus as long as propodus, propodus somewhat compressed, distoflexor teeth of propodus, dactylus similar to those of anterior legs. All abdominal somites, telson free (Fig. 4 a); first somite widest, thoracic sternite 8 exposed when abdomen closed; first two somites shorter than other somites, lateral margins of somite 3 to telson gradually converging distally; telson reaching imaginary line joining proximal half of cheliped coxae. G 1 (Fig. 4 b) straight, slender, subparallel in about proximal five-sixths, distally tapered, incurved. G 2 (Fig. 4 c) short, about one-fifth length of G 1. Etymology. The species is named after Oura Bay, Okinawa, where this interesting the crab was discovered. The name is used as a noun. Habitat. The holotype of Uruma ourana n. sp. was collected from a tube, presumably made by a polychaete worm, from a depth of 8 m. The tube was collected from a gentle slope of a mixed rudaceous and muddy sediments. The holotype was seen from the opening of the tube (M. Obuchi, personal communication). A large colony of acorn sea pens (Cavernulariidae) was also observed on this site. Subsequent attempts to collect more specimens from the same locality were not successful. The holotype was partially covered with calcium deposits (left side of the intestinal region in Fig. 1). Several individuals of encrusting foraminiferans were also observed on the surfaces of the carapace and the ambulatory legs (three individuals in the left epibranchial region in Fig. 1).Published as part of Naruse, Tohru, Fujita, Yoshihisa & Ng, Peter K. L., 2009, A new genus and new species of symbiotic crab (Crustacea: Brachyura: Pinnotheroidea) from Okinawa, Japan, pp. 59-68 in Zootaxa 2053 on pages 62-66, DOI: 10.5281/zenodo.18663
Observation of gamma rays greater than 10 TeV from Markarian 421
No full textCopyright © 2002 The American Astronomical SocietyK. Okumura, A. Asahara, G.V. Bicknell, P.G. Edwards, R. Enomoto, S. Gunji, S. Hara, T. Hara, S. Hayashi, C. Itoh, S. Kabuki, F. Kajino, H. Katagiri, J. Kataoka, A. Kawachi, T. Kifune, H. Kubo, J. Kushida, S. Maeda, A. Maeshiro, Y. Matsubara, Y. Mizumoto, M. Mori, M. Moriya, H. Muraishi, Y. Muraki, T. Naito, T. Nakase, K. Nishijima, M. Ohishi, J.R. Patterson, K. Sakurazawa, R. Suzuki, D.L. Swaby, K. Takano, T. Takano, T. Tanimori, F. Tokanai, K. Tsuchiya, H. Tsunoo, K. Uruma, A. Watanabe, S. Yanagita, T. Yoshida and T. Yoshikosh
Reassessment of Elementary School Open Spaces: How Four Schools in Uruma City, Okinawa Prefecture, Have Been Using Them
No full textMore than 45 years have passed since elementary schools with open spaces started to be built in Japan. This paper researches how the spaces designed in those early days have been used and assesses whether they are still effectively used. The points are: whether they have been adapted flexibly to new educational requirements or needs; whether the furniture in the spaces has been appropriately installed; how the furniture has been used during intervals and after-class; and how the spaces have been used for school events and during class hours. The four targeted schools, built in the 1980s, are located in Gushikawa District （formerly Gushikawa City）, Uruma City, Okinawa Prefecture, where various types of schools with open spaces built in the early days of this movement survive and some of which the author has been following since they were built.
The results show that the open spaces have been used effectively and in accordance with their intended purpose, and that they have changed as demands changed over time. The open spaces have been important as children’s free space during intervals and after-school hours, and were useful for events, communication with the local community, and PTA activities. Various pieces of furniture were installed, separating the spaces so that multi-purpose use by children and teachers was possible, but the small amount of furniture suggested that classes with large numbers and those that incorporated team teaching, integrated study and continuous learning could not always be held when desired. Enlarged libraries that include open space are in active use. Naturally, the shape and the size of the space limited usage by large groups: whole school events, activities for multiple grades, or several classes together were difficult. A space designed exclusively for children who need special support would be beneficial.departmental bulletin pape
FIGURE 6 in Aphanodactylidae, a new family of thoracotreme crabs (Crustacea: Brachyura) symbiotic with polychaete worms
No full textFIGURE 6. Uruma ourana Naruse, Fujita & Ng, 2009, male holotype, cl. 4.2 mm, cw. 9.2 mm (RUMF-ZC-907). A, cephalothorax, anterior view. B, right maxilliped 3. C, left P4, dorsal view. D, propodus and dactylus of left P4, ventralinner view. E, right P5, dorsal view. F, abdomen. G, right G1, abdominal view. H, right G2, thoracic sternal view. Scales: A = 1.0 mm; B =0.8 mm; C, E = 1.5 mm, D = 1.3 mm; F = 2.0 mm; H, G = 0.5 mm. (After Naruse et al. 2009: figs. 3, 4).Published as part of Ahyong, Shane T. & Ng, Peter K. L., 2009, Aphanodactylidae, a new family of thoracotreme crabs (Crustacea: Brachyura) symbiotic with polychaete worms, pp. 33-47 in Zootaxa 2289 on page 44, DOI: 10.5281/zenodo.19133
Distribution records of introduced land snail Kaliella microconus (Mousson, 1865), in Okinawa-jima Island
No full text沖縄島中部において , 日本国内では国外外来種に位置付けられる陸産貝類サンカクシタラ Kaliella microconus (Mousson, 1865) の生息を再確認した . オーストラリアから東南アジアにかけての分布が知られる本種が，2007 年 6 月に日本で初めて沖縄県うるま市宇堅 ( 天願川下流 ) の植栽されたアダン Pandanus odoratissimus の葉裏で初めて確認されたが , 2008 年 2 月の再調査では定着できずに死滅したと考えられていた . しかし , 2021 年の本調査でサンカクシタラをうるま市と沖縄市から再確認し , 同地を中心に沖縄島では定着していると考えられた .Kaliella microconus (Mousson, 1865) is known as an introduced land snail species in Japan. The original distribution of K. microconus is from Australia to southeast Asia. This species was first recorded underneath leaves of planted Pandanus odoratissimus in Japan in June 2007 at Uruma City, Okinawa Prefecture, but since no further individuals were found by a survey conducted in February 2008, K. microconus population was thought to be not settled in Okinawa-jima Island. However, this study rediscovered K. microconus from March to June 2021 in Uruma City and Okinawa City. Therefore, it is considered that Kaliella microconus has settled in Okinawa-jima Island
