Complementary description of Calacarus jasmini (Phyllocoptinae, Eriophyidae) on jasmine in Egypt, with a special remark to its abundance

Document Type : Original research articles

Authors

1 Fruit Trees Mites Dept., Plant Protection Research Institute, ARC, Dokki, Giza, Egypt.

2 Plant Protection Research. Institute , Agri. Res. Center, Giza, Egypt

3 Cotton and Field Crops Mite Department, Plant Protection Research Institute

Abstract

The eriophyid mite, Calacarus jasmini rec. Nov., associated with Jasminum grandiflorum, was recorded for the first time in Egypt during a field survey conducted at Giza governorate from Mar. to Dec. 2023. It caused distortion and spots on the upper leaf surface. A complementary description of this species is given, based on adult females, males, and immature stages. Genus Calacarus is a new record for Egyptian mite fauna. A special note was given for its seasonal abundance during the 2023 season. Whereas, C. jasmini firstly appeared in early Apr., with moderate numbers, and gradually increased until late Oct. The population reaches its peak in late July. Tetranychus urticae has one peak on jasmine leaves in late June. As well as, the predatory mite Amblyseius swirskii has one peak in early July. The two mites (C. jasmin and T. urticae) had a significant positive correlation with and temperature, but no significant negative correlation with relative humidity was observed. The incidence of the two phytophagous mites and A. swirskii showed a highly positive relationship. This is the first study on the seasonal abundance of phytophagous mites on jasmine in Egypt.

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