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Volume 59 (2008)
- Issue 4 Pages 273-
- Issue 3 Pages 153-
- Issue 2 Pages 33-
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Volume 59, Issue 4
Displaying 1-11 of 11 articles from this issue
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Article type: Cover
2008 Volume 59 Issue 4 Pages Cover13-
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSDownload PDF (3507K) -
Yasuhiro WATABE, Hiroaki YAMASAKI, Kazuto IWAMOTO, Takaaki KONAGAYA, Y ...Article type: Article
2008 Volume 59 Issue 4 Pages 273-281
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSThe efficacies of several formulations containing boric acid were tested against an insecticide susceptible strain (Watarida strain, abbr. SS) and field collected colony (abbr. field colony) of the German cockroach Blattella germanica. An arena treated with more than 400mg/m^2 of powdered boric acid or greater than 0.4% aqueous solution showed 100% mortality under laboratory conditions against the SS and the field colony. When the boric acid powder was mixed with powdered sugar and rice bran as food additives, the mortality increased compared with boric acid alone. Accumulated mortalities for a tablet bait formulation with more than 0.4% active ingredient against both colonies, and for gel bait formulations greater than 0.8% against the SS were lower compared with the powder or aqueous solution formulations. Harborages treated with 0.5% and 2% boric acid aqueous solutions in both colonies and 4% solutions for the field colony showed insufficient mortalities. The tested cockroaches may not intake boric acid because boric acid rapidly crystallizes as the solution dries. Direct spraying of 2% aqueous solution into the arena was less effective than the aqueous solution for the same reason. Overall, the boric powder is recommended for practical use because of high efficacy even for the field colony. When 12% boric acid powdered aerosol was sprayed around a restaurant kitchen, German cockroach infestations were repressed for at least two months. Treatment of boric acid powder to the floor and the cracks and crevices is an adequate method for controlling German cockroaches in the field.View full abstractDownload PDF (3712K) -
Arif-Ul HASAN, Setsuo SUGURI, Chigusa FUJIMOTO, Masakazu HARADA, Masat ...Article type: Article
2008 Volume 59 Issue 4 Pages 283-295
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSAnopheles hinesorum, a member of the An. punctulatus group, is a widely distributed mosquito species in Australasia. The distribution offers an opportunity to study the population genetic structure of mosquitoes within this region. We determined the genetic variations of An. hinesorum on Guadalcanal and Malaita of the Solomon Islands using cytochrome oxidase subunit 2 (COII) sequences. This study revealed that the Guadalcanal population is expanding rapidly, whereas the Malaita population is stationary, and although no genetic structure is present within the islands, significant genetic differentiation is present between the Guadalcanal and Malaita populations.View full abstractDownload PDF (6005K) -
Pairot PRAMUAL, Ubon TANGKAWANITArticle type: Article
2008 Volume 59 Issue 4 Pages 297-303
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSSimulium (Gomphostilbia) kuvangkadilokae sp. nov. is described based on male, pupal and mature larval specimens collected from northeastern Thailand. This species is assigned to the varicorne species-group of the subgenus Gomphostilbia based on the adult antenna composed of the scape, pedicel and eight flagellomeres. The pupal gill, which is composed of two V-shapes inflated elements with 12 threadlike filaments, is very distinctive and easily separates this new species from the other known species.View full abstractDownload PDF (2633K) -
Yao-Te HUANG, Hiroyuki TAKAOKAArticle type: Article
2008 Volume 59 Issue 4 Pages 305-308
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSThe female of Simulium (Simulium) puliense Takaoka, the tuberosum species-group, is described for the first time on the basis of two females reared from pupae collected from Taitung, Taiwan, and compared with three other species of the same species-group reported from Taiwan.View full abstractDownload PDF (1437K) -
Yao-Te HUANG, Hiroyuki TAKAOKAArticle type: Article
2008 Volume 59 Issue 4 Pages 309-317
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSSimulium (Simulium) pingtungense sp. nov. is described from reared adult, pupal and mature larval specimens collected from Pingtung and Taitung, Taiwan, and is placed in the striatum species-group within the subgenus Simulium. This new species has close similarities in the female, male and pupa to S. (S.) quinquestriatum (Shiraki) from Taiwan, from which it is distinguished by the absence of the paired dorsal protuberances on the larval abdomen. This new species is very similar in the pupa and larva to S. (S.) wuzhishanense Chen from China but differs in the female by the size of the sensory vesicle relative to the third maxillary palpal segment and in the male by the number of large upper eye-facets.View full abstractDownload PDF (3985K) -
Hiroyuki TAKAOKA, Victor F. TENEDEROArticle type: Article
2008 Volume 59 Issue 4 Pages 319-324
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSSimulium (Gomphostilbia) rarum sp. nov. is described from two males reared from pupae collected from Palawan Island, the Philippines. This new species is characterized in the male by the elongate calcipala extending beyond the middle of the second tarsal segment and the ventral plate much produced ventrally and also dorsally, and in the pupa by the eight gill filaments arranged in groups of (2+1)+(1+2)+2 filaments from dorsal to ventral and the absence of grapnel-shaped hooklets on each lateral side of the last abdominal segment. This new species is very similar to S. (G.) lehi Takaoka from Sarawak, Malaysia, and S. (G.) miblosi Takaoka from Mindanao, the Philippines, but barely distinguished by the pupal frons sparsely covered with round tubercles.View full abstractDownload PDF (2568K) -
Hiroyuki TAKAOKA, Victor F. TENEDEROArticle type: Article
2008 Volume 59 Issue 4 Pages 325-336
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSA preliminary survey of black flies was carried out in Samar, the Philippines, and seven species assigned to three subgenera of the genus Simulium were collected: S. (Gomphostilbia) bicolense Takaoka, S. (G.) repentinum sp. nov., S. (G.) salazarae Takaoka, S. (G.) samarense sp. nov., S. (Simulium) baltazarae Delfinado, S. (Wallacellum) tuyense Takaoka and S. (W.) sp. All of these species but S. (S.) baltazarae are added as new records from Samar. The two new species of the subgenus Gomphostilbia are described based on reared male and pupal specimens.View full abstractDownload PDF (4816K) -
Ichiro MIYAGI, Takako TOMA, Yukiko HIGAArticle type: Article
2008 Volume 59 Issue 4 Pages 337-343
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESS"Chisuikeyosoika" (hairy biting midges) is a new Japanese name given to the family Corethrellidae Edwards elevated from Chaoboridae Edwards. The features of the family including morphological and biological characteristics of adults and larvae are briefly mentioned. The taxonomic status of the Japanese species of the genus Corethrella: C. japonica (Komyo), C. towadensis Okada and Harada, C. nippon Miyagi and C. urumense Miyagi are also discussed. Corethrella is probably worldwide in distribution but has been overlooked in many areas. Medical entomologists in Japan are expected to pay more attention to the hairy biting midges.View full abstractDownload PDF (2707K) -
Takeo YAMAUCHI, Dai SUZUKIArticle type: Article
2008 Volume 59 Issue 4 Pages 345-349
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSThe geographical distribution of the ozobranchid leech Ozobranchus jantseanus, a parasite of freshwater turtles, was investigated via field surveys in Honshu, Shikoku, and Kyushu, Japan. As a result, new distributional records were found in Honshu (south of Ishikawa Pref.) and northern Shikoku. The host species of O. jantseanus were the Reeve's pond turtle Chinemys reevesii and the Japanese pond turtle Mauremys japonica. Most of the leeches were found in the folds of soft tissue between the carapace and the plastron of the turtles. Some of them were found in the orbital cavity or on the carapace. Moreover, clumps of their eggs were often observed attached to the carapace.View full abstractDownload PDF (2098K) -
Article type: Index
2008 Volume 59 Issue 4 Pages 360-362
Published: December 15, 2008
Released on J-STAGE: August 06, 2016
JOURNAL OPEN ACCESSDownload PDF (134K)
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