إن اعتبار الأكاروس القرمزي Tetranychus cinnabarinus (Boisduval 1867) كنوع مستقل أو كمرادف لـ Tetranychus urticae Koch 1836 لا يزال قضية غير متفق عليها في مجال التصنيف. تم في المرحلة الأولى من الدراسة الحالية العمل على النوعين كنوع واحد، و الوصف اعتماداَ على الصفات المورفولوجية المميزة عند كل من الذكر و الأنثى، و في المرحلة الثانية تم فصل النوعين اعتماداً على الصفات التصنيفية التي وضعها عدد من المصنفين الذين عدّوا T. cinnabarinus نوعاً مستقلاً. كما اختبر مدى تطابق بعض المقاييس المعتمدة للفصل بين هذين النوعين مع النماذج المحلية، حيث لم تنطبق تلك المقاييس على النماذج المحلية التي أبدت عدة اختلافات بالمقارنة معها. و لا تدعم النتائج الحالية فكرة النظر إلى كل من T. urticae و T. cinnabarinus كنوعين منفصلين. ـوجد كل من T. urticae و T. cinnabarinuc على نباتات مختلفة برية مزروعة في مناطق مختلفة من محافظة اللاذقية، و من أصل 100 عينة نباتية مصابة بالأكاروسات، و وجد الأول على 29 عينة في حين وجد الثاني على 9 منها.
The accuracy of the taxon T. cinnabarinus (Boisduval 1867) as a distinct species, or
as a synonym of Tetranychus urticae Koch 1836, is still standing as a controversial issue of
taxonomy and as a point of discussion. T. cinnabarinus and T. urticae have been regarded
in the first stage of this study as one species, and it was characterized depending on the
distinctive characteristics of both genders. In the second stage, the two species were
distinguished according to many morphological characters that have been recommended by
authors cited T.cinnabarinus as a valid species. The efficiency of some measures adopted
to distinguish both T. cinnabarinus and T. urticae were also tested. Measurements didn't
match local samples that showed obvious differences, T. cinnabarinus & T. urticae are not
likely to be considered as two different species according to recent researches. Both T.
cinnabarinus and T. urticae were detected on various wild and cultivated host plants. One
hundred samples of plants presented symptoms of tetranychid attacks were collected from
different localities in Lattakia province. Both T. urticae and T. cinnabarinus were found on
29, 9 samples, respectively.
References used
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BOlland, H. R., GUTERREZ, J., FLECHTMANN, C. H. W. World catalogue of the spider mite family (Acari: Tetranychidae), with references to taxonomy, synonymy, host plants and distribution. Brill Academic Publishers ,Leyden, The Netherlands,1998, 392
BOUDREAUX, H.B. Revision of the two spotted spider mite (Acarina, Tetranychidae) complex, Tetranychus telarius (Linnaeus). Ann Entomol. Soc. Am, Vol. 49,1956, 43-49
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