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 VOLUME Vol.05 Issue07 2025 

PAGE NO. 20-23 

DOI 10.37547/ajahi/Volume05Issue07-05 

 
 
 
 

Bioecological Characteristics of Bronze Beetles 

(Cetoniinae) In Fruit Orchards 
 

 Umurzakov Muzaffar 

Doctoral candidate at the M. Mirzaev Scientific Research Institute of Horticulture, Viticulture and Winemaking, Uzbekistan 

 

 Khudoykulov Azamjon Mirzakulovich 

Tashkent state agrarian university, Uzbekistan 

 

 

Received: 21 May 2025; Accepted: 17 June 2025; Published: 19 July 2025 

 

Abstract: This article presents research conducted on the bioecology and occurrence levels of bronze-colored 
beetles in pome fruit orchards under the conditions of Tashkent and Samarkand regions. The study analyzes the 
occurrence of bronze beetles during the flowering and fruit set periods of different varieties of apple, pear, and 
quince trees, comparing results across both regions. Based on the obtained data, practical suggestions and 
recommendations for production have been developed.   

 

Keywords: Pome fruit orchards, flower, bronze beetle, damage, species composition, apple, pear, quince, 
vegetation, occurrence level. 

 

Introduction: Bronze beetles belong to the order 
Coleoptera, family Scarabaeidae, subfamily Cetoniinae, 
tribe Cetoniini. There are over 1,000 species of bronze 
beetles, with 390 species found in the Ethiopian region, 
298 in Indo-China, 149 in the Palearctic, 49 in the 
Nearctic, 31 in the Neotropics, and 20 in the Australian 
region. Although many species of this tribe occur in the 
Ethiopian and Indo-Chinese regions, the Palearctic 
region also offers a favorable environment for the 
development and distribution of Cetoniini beetles, 
covering a large area [2; pp. 27–28]. 

According to other sources, there are around 2,700 
species of bronze beetles globally, with more than two-
thirds distributed in Africa and tropical Asia. In the CIS 
countries, approximately 50 species have been 
recorded [3; pp. 328–330]. 

In agrobiocenoses of fruit orchards, bronze beetles are 
among the chewing pests that damage flowers and 
fruits of crops belonging to 15 different plant families 
and about 50 crop species [3; pp. 328–330; 9; pp. 104–
107]. Based on their feeding behavior, they are 
phytophagous insects, and within this group, 

anthophagous species cause harm by feeding on 
flowers and reproductive organs of living plants [1; pp. 
1–3]. 

METHODS 

To identify bronze beetle species in fruit orchards, 
standard entomological methods were used, including 
identification keys by T.Ye. Osmolovsky and others, as 
well as literature by S.I. Medvedev [1964]. 

For collecting beetles from orchards, 10 model fruit 
trees were selected on a 1-hectare area, marked with 
tags, and monitored. Beetles were collected by shaking 
the branches of sample trees during early morning or 
cloudy weather when the temperature ranged 
between 8–12°C. The sampling began two weeks after 
bud burst. The average number of beetles was 
calculated mathematically from collected samples. 
Additionally, seasonal field observations were 
conducted in spring and summer [4; pp. 206–210; 5; pp. 
509–510]. 

To assess the damage caused by bronze beetles, during 
the vegetation period, 10 model trees per hectare were 
selected. On each tree, 40 clusters of flowers, young 

 

https://doi.org/10.37547/ajahi/Volume05Issue07-05
https://doi.org/10.37547/ajahi/Volume05Issue07-05
https://doi.org/10.37547/ajahi/Volume05Issue07-05
https://doi.org/10.37547/ajahi/Volume05Issue07-05
https://orcid.org/0009-0001-1962-9090
https://orcid.org/0009-0001-1962-9090
https://orcid.org/0000-0003-1251-2989
https://orcid.org/0000-0003-1251-2989


American Journal Of Agriculture And Horticulture Innovations 21 https://theusajournals.com/index.php/ajahi 

American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

fruits, and mature fruits from four directions were 
examined for pest damage. The data were summarized 
and the average damage level calculated [4; pp. 206–
210; 5; pp. 509–510]. 

RESULTS 

During the research, comparative observations were 
conducted in apple, pear, and quince orchards to assess 
the spread, damage, and bioecological characteristics 
of bronze beetles and their infestation levels. Results 
are presented in tabular form. 

It was found that in Tashkent region, Epicometis 
turanica (Turan bronze beetle) was not observed in 
apple orchards, whereas in Samarkand region, it was 
the dominant species. In pear orchards, E. turanica was 
absent in Tashkent but present at moderate levels in 
Samarkand. In quince orchards, the species was not 
found in Tashkent and appeared in small numbers in 
Samarkand. 

Subsequent observations showed that Oxythyrea 
cinctella (Pied bronze beetle) was a dominant species 
in apple orchards in Tashkent, and widely present in 
Samarkand as well. In pear orchards, it was moderately 
present in both regions. In quince orchards, O. cinctella 
was also moderately found in both regions. 

Regarding Protaetia marginicollis (Green bronze 

beetle), it was found at moderate levels in apple 
orchards in both Tashkent and Samarkand. In pear 
orchards, it was dominant in Tashkent and moderately 
present in Samarkand. In quince orchards, its 
occurrence was moderate in both regions. 

As for Stalagmosoma allbellum (Spotted bronze 
beetle), it was rarely found in apple and pear orchards 
in Tashkent, and not detected in quince orchards. 
Similarly, in Samarkand, it was found in low numbers in 
apple and pear orchards and was absent in quince 
orchards. 

In particular, studies on bronze beetles revealed that 
under the conditions of Tashkent region, the Turkestan 
bronze beetle (Protaetia turkestanica) was rarely 
encountered in apple and pear orchards, while it was 
completely absent in quince orchards. In the 
Samarkand region, Protaetia turkestanica was also 
found in low numbers in apple and pear orchards and 
was not observed at all in quince orchards. 

Similarly, field observations on bronze beetles showed 
that in the Tashkent region, the dark-colored bronze 
beetle (Protaetia agglomerata) was rarely found in 
apple and pear orchards, and not observed in quince 
orchards. In the Samarkand region, Protaetia 
agglomerata was not detected in apple, pear, or quince 
orchards (Table 1). 

Table 1 

Damage and Occurrence Level of Bronze Beetle Pests in Pome Fruit Orchards 

(Field Observations, Tashkent and Samarkand Regions, 2023–2024) 

№ Pest Beetle Species 

Observed Regions 

Tashkent Samarkand 

Types of Pome Fruit Orchards 

apple  pear   quince apple  pear   quince 

1. 
Turan bronze beetle Epicometis 

turanica (Reitter, 1889) 
- - - ++++ ++ + 

2. 
Pied bronze beetle Oxythyrea 

cinctella (Schaum, 1841) 
++++ ++ ++ +++ ++ ++ 

3. 

Green bronze beetle 

Protaetia marginicollis 

(Ballion, 1870) 

++ ++++ ++ ++ ++ + 



American Journal Of Agriculture And Horticulture Innovations 22 https://theusajournals.com/index.php/ajahi 

American Journal Of Agriculture And Horticulture Innovations (ISSN: 2771-2559) 
 

 

4. 

Spotted bronze beetle 

Stalagmosoma allbellum 

(Pallas, 1771) 

+ + - + + - 

5. 

Turkestan bronze beetle 

Protaetia turkestanica (Kraatz, 

1886) 

+ + - + + - 

6. 

Dark bronze beetle  

Protaetia agglomerata (Solsky, 

1876) 

+ + - - - - 

Note: The data were obtained by observing all four sides of 10 model trees per 1-

hectare plot 

 ++++ - very frequently observed,  +++ - frequently 
observed,  ++ - observed,  + - rarely observed,  - not 
observed 

CONCLUSIONS 

In conclusion, it can be stated that during the 2023–
2024 vegetation seasons in pome fruit orchards of 
Tashkent and Samarkand regions, six species of bronze 
beetles were studied, including Epicometis turanica 
(Turan bronze beetle), Oxythyrea cinctella (Pied bronze 
beetle), Protaetia marginicollis (Green bronze beetle), 
Stalagmosoma allbellum (Spotted bronze beetle), 
Protaetia turkestanica (Turkestan bronze beetle), and 
Protaetia agglomerata (Dark bronze beetle), focusing 
on their species composition and occurrence levels. 

The damage and occurrence level of dominant bronze 
beetle species in pome fruit orchards (apple, pear, and 
quince) were identified. Specifically, Oxythyrea 
cinctella (Pied bronze beetle) was found to be the 
dominant species in apple orchards of Tashkent region, 
while Epicometis turanica (Turan bronze beetle) was 
identified as the dominant species in pear orchards of 
Samarkand region. 

Within different apple varieties, three dominant bronze 
beetle species — Epicometis turanica, Oxythyrea 
cinctella, and Protaetia marginicollis — were observed 
in terms of their distribution and damage. 

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