TY - JOUR
T1 - The mite Hemisarcoptes sp. (Astigmata: Hemisarcoptidae) parasitizing willow oyster scale (Homoptera: Disapididae) on poplars in Northern China
AU - Ji, Lanzhu
AU - Gerson, Uri
AU - Izraylevich, Sergey
PY - 1994/10
Y1 - 1994/10
N2 - Willow oyster scale, Lepidosaphes salicina Borchsenius (Homoptera: Diaspididae) is a serious, univoltine, pest of willows and poplars in northern China. Its main natural enemy was Hemisarcoptes sp. (Acari: Astigmata: Hemisarcoptidae), which attacks eggs, nymphs, immature males and females of the scale. Mite prevalence was greatest during June, on 2nd-instar female nymphs of the pest. The numerical responses and density dependencies of the mite on L. salicina are discussed in relation to field data. More scales were parasitized on the eastern and northern sides of the trees, which had more scales, than on their souther and western aspects. Another diaspidid, Quadraspidiotus gigas (Thiem and Gerneck), was also attacked on poplars by Hemisarcoptes sp.
AB - Willow oyster scale, Lepidosaphes salicina Borchsenius (Homoptera: Diaspididae) is a serious, univoltine, pest of willows and poplars in northern China. Its main natural enemy was Hemisarcoptes sp. (Acari: Astigmata: Hemisarcoptidae), which attacks eggs, nymphs, immature males and females of the scale. Mite prevalence was greatest during June, on 2nd-instar female nymphs of the pest. The numerical responses and density dependencies of the mite on L. salicina are discussed in relation to field data. More scales were parasitized on the eastern and northern sides of the trees, which had more scales, than on their souther and western aspects. Another diaspidid, Quadraspidiotus gigas (Thiem and Gerneck), was also attacked on poplars by Hemisarcoptes sp.
UR - http://www.scopus.com/inward/record.url?scp=0028312004&partnerID=8YFLogxK
U2 - 10.1007/BF00051725
DO - 10.1007/BF00051725
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AN - SCOPUS:0028312004
SN - 0168-8162
VL - 18
SP - 623
EP - 627
JO - Experimental and Applied Acarology
JF - Experimental and Applied Acarology
IS - 10
ER -