摘要:

AbstractThe present paper is the results of the biosystematic studies ofCulex pipienscomplex in China, including hybridization, mathematical analyses of morphological characters and GC analyses of culticular hydrocarbons. On the bases of the results of these studies, in addition to their allopatric distribution, it can be concluded that Cx.pipienscomplex in China consists of four subspecies, includingCx. p ipiens molestusrecently discovered in Beijing.Cx. pipiens quinquefasciatuscan not be considered as a spearate species andCx. pipiens pallensis not an intermediate form as claimed by some western workers.

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00016.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractTwo new species ofCulicoidesfrom Hainan Province,C. jianfenglingensisandC.cleaves, are described.

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00017.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractIn August 5–14, 1989 the authors collected many phlebotomine sandflies in natural lime‐stone caves from Yiwu and Mengyuan, Xishuangbanna, Yunnan Province. Among them 10 species of phle‐botomines were found, i.e.,Idiophlebotomus longiforceps, Phlebotomus yunshpis, P. trunmcsis, P. kiangsuensis, P. stantoni, Serptomyia rudnicki, S. barraudi, S. iyngari, S. koloshanensis, andS. bailyi(He and Leng 1991). Additionally a new species of the subgenusNeophlebotomusis described asSergentomyia (Neophlebotomus) kueichenaein honour of Professor Kueich

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00018.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractThis paper deals with the genusCephalispaMalloch of China. Descriptions are given of nine new species:C. biloba, C. breviabdominis, C. brevilamina, C. cultrata, C. fani, C. fujianensis, C.hamata, C. prominentiaandC. spina. A key and catalogue of the species of China in this genus are given.

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00019.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractThe present paper recorded four species ofCybocephlusErichson from China. Two of them are new to science:C. concavussp. nov. and C.pangisp. nov.

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00020.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractGross anatomy, ultrastructure, innervation and ultrastructural alterations of the prothoracic gland (PTG) of cotton bollworm,Helicover pa armigera(Lepidoptera: Noctuidae) are illustrated for the last larval and early pupal stages as observed by light and electron microscopy. The T‐shaped, paired (PTGs) consist each of 76–116 cells which are classified morphologically as large and small gland cells. In addition, another kind of small (about 6μ in diameter) gland cell was found in the PTGs of last instar larvae. The PTGs are innervated by the branches of 3 nerves! and tracheae and tracheoles are abundantly distributed to these glands. PTGs disappeared completely by the third day after ecdysis to the pupal stage (at temperature 28 C with a photoperiod L15:D9). An intercellular channel system (ICS) is formed by numerous, deep invaginations of the plasma membrane of gland cells. This ICS gradually increases in depth and width and reaches maximum development around the time of the major ecdysteroid secretion peak during the last larval instar.Numerous multivesicular sacs (MVS) with their remnants and an extensive rough endoplasmic reticulum were observed within ICS and cytoplasm, respectively, on the fourth day of the last larval instar. At that time the matrix of mitochondria became much more electron lucent.Freeze‐fracture replicas of the glandular epithelium were made from last instar (4th day larvae. Dynamics of structure are related to data from others concerning secretory states of the prothoracic glands of this s

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00021.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractUsing cell free radioassay, activities of ecdysone 20‐monooxygenase (E‐20‐M) were determined in homogenates of prothoracic glands (PGs) and fat bodies at 24 h intervals during last instar larval development ofBombyx mori. It was found that the profile of E‐20‐M activity in PG homogenates was characterized by a basal line from day 0 to day 3 which begins to rise on 4th day and reaches a peak on 5th day. Nevertheless, in comparison with PGs, E‐20‐M activity in fat body wa

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00022.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractCorpora allata are the defined site of juvenile hormone (JH) biosynthesis in reproductive adult insects and their activity is regulated by intrinsic and extrinsic factors. In the adult lady beetleCoccinella septempunctata, it has been well established that the development of ovaries is controlled by JH (Guan 1987). The present study aims at the elucidation of the influence of some factors regulating reproduction of the lady beetle. They include topical application of JH analogues, presence of neuropeptides in the extract from the brain, as well as the development of ovary and type of food on CA activity. JH synthesis in CA is monitored with radiochemical assay and immunoelectrophoresis.

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00023.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractToxicity of a neem seed kernel extract (AZAL‐S) was assessed under laboratory conditions against larvaeof Culex quinquefasciatus. The LC50value for AZAL‐S was 0.78× 10–6. Exposure of 4th instar larvae to 0. 3× 10–6 and 0. 5× 10–6 AZAL‐S for 120 hours caused 46. 2% and 67. 5% mortality respectively, with various types of morphogenetic aberration. AZAL‐S induced an obvious prologation of the larval period when 1st instar larvae were treated with 0. 4–1. 0× 10–6 AZAL‐S for 7 days. The insect growth regulating effect of AZAL‐S on mosquito larvae was similar to those reported for certain

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00024.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY

摘要:

AbstractThree N‐isobutylamides were isolated from the fruits ofPhellodendron chinense. (2E, 4E)‐N‐isobutyl tetradecadienamide and (2E, 4E1‐N‐isobutyl pentadecadienamide were responsible for the in‐secticidal activity againstMusca domestica. However, (2E, 4E, 82)‐N‐isobutyl tetradecatrienamide

ISSN:1672-9609    

DOI:10.1111/j.1744-7917.1995.tb00025.x

出版商:Blackwell Publishing Ltd    

年代:1995

数据来源: WILEY