All issues
Volume 18 (2009)
- Issue 2 Pages 65-
- Issue 1 Pages 1-
Volume 18, Issue 1
Displaying 1-4 of 4 articles from this issue
- |<
- <
- 1
- >
- >|
Original Papers
-
Aino OTA2009 Volume 18 Issue 1 Pages 1-5
Published: May 25, 2009
Released on J-STAGE: June 25, 2009
JOURNAL FREE ACCESSA new species of the genus Autogneta Michael, 1885 is described from forest soil of larch (Larix kaempferi) plantation on the slope of Mt. Yatsugatake, Nagano Prefecture, Central Japan. It differs from the known congeners in having the elongated prodorsum, peculiar arrangement of six genital setae, body size smaller, a pair of ancyroid structure of notogaster and femora I - IV granulated on surface.View full abstractDownload PDF (171K) -
Yoshinori KUNIMOTO, Tomoha NAKAMA, Hiroshi AMANO, Akio TAKAFUJI2009 Volume 18 Issue 1 Pages 7-16
Published: May 25, 2009
Released on J-STAGE: June 25, 2009
JOURNAL FREE ACCESSThe species composition of predators for spider mites was examined by using kidney bean trap infested with spider mites that were placed on the ground in persimmon orchards in Nara Prefecture. The most dominant phytoseiid mite in the orchards was Neoseiulus womersleyi. The predacious insects observed were Feltiella sp., Orius spp. and Scolothrips takahashii.
The occurrence of predators was compared between orchards with and without weed control, using kidney bean traps placed on the ground and the ‘phyto traps’ attached to persimmon twings. Significantly fewer phytoseiid mites were captured by the kidney bean trap in the orchard without weeds than in that with weeds. However, no significant difference was observed in the number of Feltiella sp. larvae and the number of phytoseiid mites captured in the ‘phyto trap’ between two treatments. The seasonal occurrence of phytoseiid mites estimated based on the numbers in the ‘phyto traps’ also showed no difference between two types of weed control during the census period. No N. womersleyi was found in the ‘phyto traps’ on persimmon trees, although it was the most abundant species captured by the bean traps.View full abstractDownload PDF (316K) -
Kazuyoshi KUROSA2009 Volume 18 Issue 1 Pages 17-28
Published: May 25, 2009
Released on J-STAGE: June 25, 2009
JOURNAL FREE ACCESSA new genus and two new species of pygmephorid mites belonging to the subfamily Neopygmephorinae are described from Japan under the names Insensilla lasioglossi and I. duplicis. They are known only from the adult females found attached to the halictid bees, Lasioglossum apristum (Vachal) and L. duplex (Dalla Torre), respectively. The new genus is readily distinguished from all the known genera of the family by that the prodorsum entirely lacks the so-called sensillum (=seta sc1), but that the bothridium is retained though fairly reduced in size. I. lasioglossi, the type species, is easily discriminated from I. duplicis, the other member of the genus, by possession of much stronger barbs on the apices of most dorsal idiosomal setae, obviously shorter coxal setae, and so forth.View full abstractDownload PDF (538K)
Short Communication
-
Kazunori OHASHI, Shôzô EHARA, Yoshinori KUNIMOTO, Hiroshi ...2009 Volume 18 Issue 1 Pages 29-31
Published: May 25, 2009
Released on J-STAGE: June 25, 2009
JOURNAL FREE ACCESSSchizotetranychus baltazari Rimando was originally described by Rimando (1962a) based on specimens collected from Citrus in the Philippines. Thereafter, this species has been known mainly from a wide range of the Southeast and Southwest Asia: Hong Kong, Myanmar, India (Manson, 1963), Taiwan (Lo and Hsia, 1968), Thailand (Ehara and Wongsiri, 1975) and Indonesia (Ehara, 2004), but it has hitherto been unrecorded from Japan. Recently specimens of S. baltazari were found by us on a wild plant, Mallotus japonicus (Thunb.) Muell. Arg., in Wakayama Pref., Central Japan. This is the first record of S. baltazari from Japan. Morphological and biological features based on the Japanese population are noted below.
The setal nomenclature used in this paper follows Lindquist's (1985) system. The measurements are given in micrometers. The present specimens are retained in the collection of the Kyoto University Museum and in Ohashi's private collection.View full abstractDownload PDF (46K)
- |<
- <
- 1
- >
- >|