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Volume 26 (1975)
- Issue 4 Pages 173-
- Issue 2-3 Pages 73-
- Issue 1 Pages 1-
Volume 26, Issue 1
Displaying 1-15 of 15 articles from this issue
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Article type: Cover
1975 Volume 26 Issue 1 Pages Cover2-
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
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Hideakira TSUJIArticle type: Article
1975 Volume 26 Issue 1 Pages 1-6
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA preliminary exposure of more than 28 days to 15°±1℃ and short day length could induce final instar nymyhs of P. fuliginosa to tolerate a chilling temperature of 5.5°±0.5℃ for 90 days. The nymphs seem to enhance their resistance to cold without entering "true diapause". Second instar nymphs reared at 15°±1℃ seem to be more resistant to cold than those reared at 20°±1℃.View full abstractDownload PDF (527K) -
Kiyoshi MAKIYA, Hironori SAKURAIArticle type: Article
1975 Volume 26 Issue 1 Pages 7-14
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSThe present investigation was carried out to see relation between longevity of the overwintering house mosquito, Culex pipiens pallens, and their wing length. The long-lived mosquito survived about 60 days after capture when fed with no diet except water and survivorship curve of all the mosquitoes proved to fit well to an equation, R=100-99.63×(0.01517)^<(0.8952)^t>, where R is survival rate (%) on the t'th day after capture. This overwintering population was found to include two different component groups : one was a long-winged group which accounted for about 92% and the other was a short-winged group making up 8% of the population. The rate of mortality increases with age in such a manner that its logarithm is proportional to age in every wing-length category. On the basis of this mortality-age relationship, Gompertz equation, M=kp^<q^t>, was applied to the survival data of each wing-length category, where M is cumulative mortality (%) on the t'th day after capture and k, p, q parameters constant for each category. From this equation the "half-life period" of each wing-length category can be estimated. It follows from this estimation that the longer wings the mosquitoes have, the longer period they survive on the whole with only a few exceptions. Discussions were given of a possibility that the blood-fed mosquitoes belonging to the short-winged group might be capable of taking in Japanese encephalitis virus in late summer, of carrying the virus through the winter and of transmitting to vertebrate hosts in the next spring.View full abstractDownload PDF (719K) -
Masahisa ORIArticle type: Article
1975 Volume 26 Issue 1 Pages 15-19
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA study was made on the distribution and population density of the spider, Theridion tepidariorum, which is well known as one of the natural enemies of pest insects, in various localities in Nagasaki Prefecture in 1966. The number of T. tepidariorum was observed over eight different kinds of environment : forests, paddy field, farms, caves, sewers, houses (urban and suburban) and cattle barns. Their population density was highest at the inside of animal sheds and houses, in which this spider was found abandantly in the barn, kitchen and latrine. The seasonal prevalene in the house and the breeding season in three stations were also surveyed throughout a year. The peak of the population density in the house was observed in June and July. Many egg-sacs were layed in the warm season from May to August with a marked peak in June and a few in the rest seasons. The mean frequency of oviposition per female in a whole life was 3.08 and the mean number of eggs per egg-sac was 347.1. The preys of this species were insect species belonging to the orders Blattaria, Dermaptera, Isoptera, Hemiptera, Mecoptera, Lepidoptera, Coleoptera, Hymenoptera and Diptera, Among them, many of the flies, chironomids (Diptera) and Blattaria were trapped by the web more frequently than any other insects.View full abstractDownload PDF (525K) -
Kazumi NISHIDAArticle type: Article
1975 Volume 26 Issue 1 Pages 21-24
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA new species of the genus Piezura, P. nigrigenus, a new subspecies of the genus Fannia, F. japonica amamiensis, and a newly recorded species of the genus Platycoenosia, P. mikii Strobl are dealt with in this paper.View full abstractDownload PDF (380K) -
Ichiro MIYAGIArticle type: Article
1975 Volume 26 Issue 1 Pages 25-29
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSA new haematophagus chaoborid, Corethrella japonica is described from Japan and the mouthparts of this species were studied with scanning electron microscope. This species is characterized by the yellowish body and by the absence of spotting or infuscation of the legs and wings. The female has well-developed biting mouthparts with toothed mandible and hypopharynx.View full abstractDownload PDF (1206K) -
M. DATTAArticle type: Article
1975 Volume 26 Issue 1 Pages 31-40
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSThis paper is based on the material obtained from the Assam foot-hills of India. Described, discussed and illustrated here are seven specific segregates comprising five new species, viz., Simulium kapuri, S. bucolicum, S. litoreum, S. unum and S. fidum; and two unnamed species of insufficient material.View full abstractDownload PDF (1007K) -
Mamoru WATANABE, Kiyoshi KAMIMURAArticle type: Article
1975 Volume 26 Issue 1 Pages 41-47
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSAn observation was made on the nectarsucking behavior of the blood-sucking horseflies, Tabanus iyoensis, which were captured by nets at 7 different stations in Toyama Prefecture in 1972 and 1973. 1. Fifty-nine to 97 per cent horseflies of the total population captured were found to have taken nectar before coming for blood-sucking. although the nectar volume in the abdomen differed in individuals, and by captured date, time and station, approximately 14 per cent individuals retained 7μl or more (fully-sucked), 30 per cent from 3 to 6μl (medium-sucked), and 38 per cent only from 1 to 2μl (a little-sucked). The sugar contents of 5μl nectar in the abdoment of the fully-sucked individual, when analyzed either by phenol sulfuric acid- or anthrone-method, were 1.0 to 2.8mg or 20 to 60 per cent in concentration. 2. Six different sugars from mono- to trisuccharide, i.e. fructose, glucose, sucrose, maltose, mellibiose and raffinose, were detected by the paper chromatography. Although the combination of sugars differed in individuals, approximately 60 per cent fully-sucked individuals contained either all 6 sugars or 5 sugars without raffinose or mellibiose. 3. Two peaks of nectar-sucking activity were observed daily. This daily cycle seemed to occur regularly. Nevertheless, a slight change was caused by weather and by the physiological conditions of the horseflies themselves. 4. Comparison of the nectar-sucking behavior between autogenic Tabanus iyoensis and anautogenic Tabanus chrysurus revealed that the former showed 12 per cent fewer individuals in nectarsucking but 3- to 5-fold concentration of sugar in the abdominal contents. Approximately 27 per cent fully-sucked individuals of the former species preserved sugars both in the diverticulum and the midgut, whereas the latter species (also in T. trigeminus) did only in the diverticulum.View full abstractDownload PDF (733K) -
Kikuo MATSUOArticle type: Article
1975 Volume 26 Issue 1 Pages 49-53
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSThe egg surface structure of 3 species of Aedes from Japan is described and illustrated with the aid of a scanning electron microscope. The characters of the outer chorion for separating the eggs of 7 species of Aedes and 1 species of Armigeres from Japan, 3 species of the present report and 5 species of the 1st report of this series, are presented in Table 1.View full abstractDownload PDF (1088K) -
Katsumi SAITO, Noriaki KAJIHARAArticle type: Article
1975 Volume 26 Issue 1 Pages 55-60
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSThe fauna and distributions of the black flies in Yamanashi Prefecture were investigated by collecting the early stages of flies from the streams. The survey was conducted with 32 streams in February and March of 1971. The water temperature of the streams ranged from 5°to 8℃ during the period of the observation. On 33 spots out of 57 investigated the aquatic stages of the black flies were collected. They were 14 species belonging to two genera as shown in the following; 1) Prosimulium kiotoense 2) Simulium uchidai 3) S. subcostatun 4) S. mie 5) S. kobayashii 6) S. aokii 7) S. iwatense 8) S. bidentatum 9) S. japonicum 10) S. arakawae 11) S. suzukii 12) S. rufibasis 13) S. kawamurae 14) S. sp. A Among these the six species, that is P. kiotoense, S. subcostatum, S. mie, S. kobayashii, S. aokii and S. sp. A. were collected for the first time in the Prefecture. So far 12 species had been recorded in the district, therefore the fauna come to include 18 species of three genera. The hitherto unkown larvae of S. kobayashii were collected by the authors at one spot in a concrete ditch running to the River Fuji. The distribution characteristics of several species were discussed.View full abstractDownload PDF (657K) -
Ryoji TAKAI, Tetsuma YAMAGUCHI, Takeshi KURIHARAArticle type: Article
1975 Volume 26 Issue 1 Pages 61-63
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSPresumably attracted by the light a large number of Cydnid bug, Aethus indicus, invaded into the houses in a town on Okinoerabu Island (37°30″N. 128°35″E) at about 8 pm. on July 18,1974. The invasion lasted for four nigths and occurred again August for five nights. The inhabitants were being afflicted with offensive smell emitted by the bugs and suffered from the contamination of food and drink with their stink fluid. In addition, 76 cases of earache caused by the entry of the bug should been treated by local clinics. Similar outbreak of cydnid bug and earache cases were recorded simultaneously from two adjacent islands, Tokunoshima and Yoron. The cases of the earache were 35 as reported from these two islands.View full abstractDownload PDF (421K) -
Kazuyo ICHIMORI, Takeshi KURIHARAArticle type: Article
1975 Volume 26 Issue 1 Pages 63-64
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
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Yuzuru NAKAMURAArticle type: Article
1975 Volume 26 Issue 1 Pages 65-
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
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Masakazu TAKAHASHIArticle type: Article
1975 Volume 26 Issue 1 Pages 66-
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSDownload PDF (156K) -
[in Japanese]Article type: Article
1975 Volume 26 Issue 1 Pages 66-
Published: May 15, 1975
Released on J-STAGE: September 05, 2016
JOURNAL FREE ACCESSDownload PDF (156K)
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