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All content in this area was uploaded by Nabil Abo Kaf on May 04, 2025
Content may be subject to copyright.
419 Arab J. Pl. Prot. Vol. 42, No. 4 (2024)
Short Communication (Ecology: Insects)
Ceroplastes floridensis
alihasanhasan@tishreen.edu.sy
Ceroplastes floridensis
001266-https://doi.org/10.22268/AJPP
Ceroplastes floridensis
ComstockHomoptera: Coccidae
Ceroplastes floridensis
1
Ceroplastic floridensis
Comstock,1881
Perseaa mericana
Cedrus deodaraUlmus spp.
Rhapiolepsis indica Pinus taeda
Quercus spp. Drees et al., 2006
Argyriou &
Kourmadas, 1980
CABI, 2010
Johnson & Lyon, 1991
Bodenheimer, 1935Drees et al., 2006
https://doi.org/10.22268/AJPP-001266
Arab Society for Plant Protection
Chown &
Gaston, 2010Honěk, 1993
Teder & Tammaru, 2005
Stillwell & Fox, 2009
Davidowitz et al., 2004Nylin & Gotthard, 1998
4242024
Abd El-Kareim et al., 2012
25
Opticha
Genstat12
Karaca & Eserkay, 2016
Drees et al., 2006
421 Arab J. Pl. Prot. Vol. 42, No. 4 (2024)
de Kogel et al., 1999
Frankliniella
occidentalis
Ceroplastes floridensis
Figure 1. Monitoring the number of adult and nymph stages
of the citrus wax scale and the mean temperatures during
2018/2019.
Table 1. The dates of egg laying and hatching, the maximum appearance of the nymphal stage, the dormancy stage, the length
of nymphal period, and the duration of the two generations of the citrus wax scale insect during 2018/2019.
Second generation
First generation
Description
July 15-28
March 15-April 5
Egg laying date
August 7-15
April 17-27
Hatching date
August 17-22
May 15-20
Maximum appearance period of the nymphal stage
Adult females
-
Dormancy stage
1-2 days
2-3 days
Larvae 1
Length of the nymphal
period
20-24 days
25-28 days
Larvae 2
22-25 days
22-25 days
Larvae 3
90-105 days
90-115 days
Generation duration
4242024
Table 2. Length mean (±SE) (mm) of the different stages of the citrus wax scale insect on three different host plants.
Host
Dimensions
Egg stage
nymphal stage
st
1
nymphal stage
nd
2
nymphal stage
rd
3
Adult stage
Citrus
Length
0.2560.050
0.3480.058
0.4840.117
1.3760.265
0.452±2.744
Width
0.1000.894
0.208±0.027
0.2520.065
0.8000.195
2.292±0.407
Laurel
Length
0.2560.050
0.3880.066
0.237±1.228
0.184±2.180
0.351±3.244
Width
0.1000.894
0.2160.037
0.7360.157
1.6360.182
2.704±0.352
Loquat
Length
0.0509±0.252
0.050±0.356
0.776±0.139
1.464±0.279
0.230±2.780
Width
0.1000.894
0.2080.027
0.448±0.104
0.960±0.255
2.2280.203
0.05
LSD
Length
Host
0.0527
Width
0.04581
Length
Stage
0.0680
Width
0.05914
Length
Host × Stage
0.1177
Width
0.10243
Abstract
Hassan, A., N. Abo Kaf and E. Mohamed. 2024. Biology of the Citrus Wax Scale Insect, Ceroplastes floridensis Comstock
on Citrus Trees, and the Relationship Between the Dimensions of the Developmental Stages of the Insect with its Hosts
in Syria. Arab Journal of Plant Protection, 42(4): 419-423. https://doi.org/10.22268/AJPP-001266
This study was carried out during the 2018-2019 period in citrus orchards in Latakia Governorate, Syria. The biology of the citrus wax
scale, Ceroplastes floridensis Comstock (Homoptera: Coccidae), was investigated and the effect of the plant host on the insect stages
dimensions was determined. It has been shown that the insect had two generations per year, and the adult female laid an average of 350-500
eggs under a wax cover. The dimensions of the insect’s stages reached their highest value on the laurel plant, followed by loquat, and the least
was on citrus.
Keywords: Citrus wax scale, Ceroplastes floridensis, Syria.
Affiliation of authors: A. Hassan1*, N. Abo Kaf1and E. Mohamed2. (1) Plant Protection Department, Faculty of Agricultural Engineering,
Tishreen University, Latakia, Syria; (2) Directorate of Agriculture, Ministry of Agriculture and Agrarian Reform,
Latakia, Syria. *Email address of the corresponding author: alihasanhasan@tishreen.edu.sy
References
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1610
Received: January 18, 2023; Accepted: October 16, 2023
