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American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 12    Pages: 19-23 

OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

 

 

 

 

 

 

 

 

 

ABSTRACT 

The article provides information on the fauna and ecology of the Poplar Leaf Beetle (Chrysomela populi) living and 

development. 

 

KEYWORDS 

Poplar Leaf-eating Beetle (Chrysomela populi) fauna, beetles, leaf-eating, ecology, zoology, vegetation, 

development. 

 

INTRODUCTION

Interest in insects dates back to ancient times. Initially, 

they were regarded as a source of food, but with the 

development of livestock farming and agriculture, they 

began to be studied as pests. Over time, it became 

clear that among them, there were also beneficial 

insects. 

As a result, branches of entomology such as sericulture 

and beekeeping emerged. However, the scientific 

study of insects began in the 17th century. The Italian 

scientist I. Malpighi (1628-1694) laid the foundation for 

the anatomy and classification of the silkworm, while 

the Dutch scientist J. Swammerdam (1637-1680) 

contributed to the study of insect anatomy and 

  Research Article 

 

BIOGEOGRAPHY OF POPULAR LEAF BEETLES (COLEOPTERA: 

CHRYSOMELIDAE) 
 

Submission Date: December 01, 2024, Accepted Date:  December 06, 2024,  

Published Date: December 11, 2024 

Crossref doi: https://doi.org/10.37547/ajahi/Volume04Issue12-04 

 

 

Matmuratova G.I. 
Doctoral student of Nukus State Pedagogical Institute named after Ajiniyaz, Uzbekistan 

 

Sultanov B.A. 
Assistant teacher of Nukus State Pedagogical Institute named after Ajiniyaz, Uzbekistan 

 

 

Journal Website: 

https://theusajournals.

com/index.php/ajahi 

Copyright: Original 

content from this work 

may be used under the 

terms of the creative 

commons attributes 

4.0 licence. 

 

https://theusajournals.com
https://doi.org/10.37547/ajahi/Volume04Issue12-04
https://doi.org/10.37547/ajahi/Volume04Issue12-04


Volume 04 Issue 12-2024 20 

                  

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 12    Pages: 19-23 

OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

metamorphosis. In the second half of the 18th century, 

the development of entomology in Russia was greatly 

influenced by the works of G.I. Fisher-Valdheim (1771-

1853), particularly his “Entomography of the Russian 

Empire,” Professor E.K. Brandt (1839-1891), who wrote 

on the nervous system of insects, and F.P. Keppen 

(1833-1908), whose three-volume work “Pest Insects” 

was instrumental. Their works, along with those of 

A.O. Kovalevsky (1840-1901) and I.I. Mechnikov (1843-

1916), made significant contributions to the field. 

During this period, researchers were especially drawn 

to the biology and behavior of insects. The works of 

French naturalist J.A. Fabre (1823-1915), particularly 

“Instinct and Behavior of Insects” and “The Life of 

Insects,” are of universal importance in this field. 

In the 19th and 20th centuries, practical entomology 

fields emerged, primarily agricultural and forestry 

entomology. In our country, the Entomology Bureau 

was established in 1894, and it was led by the great 

scientist and entomologist I.A. Porchinskiy (1848-1916). 

Professor H.A. Kholodkovskiy (1858-1921) made 

significant contributions to the development of 

practical entomology. 

I.Ya. Shevirev (1859-1920) studied forestry entomology 

and parasitic insects. In the 20th century, the field of 

entomology, particularly its branches, developed into 

an independent science. From this century onward, the 

classification, physiology, and ecology of insects began 

to be studied in-depth, and chemical and biological 

control measures against pest insects were developed. 

Among insects, the order Coleoptera (beetles) 

occupies a special place. Beetles, or Coleoptera, have 

hardened forewings, called elytra, made of chitin, 

which protect the thin, membranous hindwings tucked 

underneath. Their mouthparts are adapted for 

chewing. Many beetles have glands that release foul-

smelling or toxic substances. 

Many species of beetles are considered serious pests 

of agricultural crops. 

Leaf beetles (Chrysomelidae) comprise several tens of 

thousands of species. The beetle entered Western 

Europe at the beginning of the 20th century and from 

there spread to Russia. Over time, it also spread to 

Central Asia, and today these species are found in the 

territories of Uzbekistan. 

Chrysomela populi (poplar leaf beetle) is a very 

widespread species. It can be found in areas where 

poplar and aspen grow, from April to October. It is 

distributed in Europe, the Caucasus, Pakistan, Siberia, 

Kazakhstan, Central Asia, the Russian Far East, Ukraine, 

Korea, China, and Japan. This leaf beetle can develop 

two generations in a single year. 

Morphology and Biology 

The adult insect has a length of 12 mm. Its body color is 

yellowish or light red. The forewings are yellow-brown 

or red. This species has the following characteristic 

features: The forewings are ribbed, and their corners 

have small black spots. The top of the wings is dark red 

to yellow-brown, with a dark, claw-like tip at the 

junction. The wings are covered with small spots. The 



Volume 04 Issue 12-2024 21 

                  

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 12    Pages: 19-23 

OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

head and shield are metallic black. The eggs are 

elongated-oval, yellow to dark red, and about 1.5 mm 

in size. One-year-old larvae are light gray-white, with a 

dark brown shield, head, and legs. The mature larva is 

light gray-white or pale green, with small shiny spots, a 

black shield, and dark spots on the back. On the second 

and third segments of the body, there are sharp, 

pointed protrusions on the sides. The cocoon is free, 

short, symmetrically dotted, and light gray-white, with 

a sharply pointed end. Its length is 11 mm. The poplar 

leaf beetle (Chrysomela populi) emerges from its 

wintering place under the bark of trees at the end of 

April or early May when the air temperature is between 

12-13°C. The beetles feed on the leaves of poplar and 

aspen, chewing on young leaves and buds, causing 

damage. 

 

 

 

Reproduction 

The beetles live on the leaves and mate there. The 

fertilized female beetle lays 20-60 eggs in a cluster on 

the underside of the leaves. Older females, after 

emerging from hibernation, can lay between 220 and 

500 eggs. The larvae that emerge from the eggs feed 

together in clusters. The larvae hatch 10-12 days after 

the eggs are laid. The larvae chew through the veins of 

the leaves. After 7-8 days, second-instar larvae feed 

individually on the leaf tissue, creating holes in the 

leaves and leaving behind their exoskeletons. The 

larvae feed for 16-20 days before reaching maturity. 

The length of the mature larvae is 13 mm. Once the 

larvae have finished feeding, they suspend themselves 

head-down on the leaf and wrap themselves in a dark 

orange cocoon during the first week of June. The pupal 



Volume 04 Issue 12-2024 22 

                  

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 12    Pages: 19-23 

OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

stage lasts 10-14 days. In the second half of June, the 

beetles emerge from the cocoon and begin feeding on 

poplar bark. During the first week of July, these young 

beetles lay eggs in clusters on the undersides of leaves 

for the new generation. The embryo develops in the 

eggs, and the larvae hatch on the 10th day. The larvae 

continue to grow for 20-22 days, reaching maturity by 

the first half of August. In the second half of August, 

the larvae turn into pupae. By the first week of 

September, the young beetles emerge from the 

cocoon. If conditions are favorable, a third generation 

may develop by the end of October. The young and 

older beetles drop to the ground beneath the bark to 

enter a resting phase and hibernate. 

Melassoma tremulae Fabr - Red-winged Aspen Leaf 

Beetle 

The adult beetle is 8-10 mm long, with yellow-red 

forewings and a black thorax. It is commonly found on 

aspen and poplar trees. The beetles chew through the 

leaves, creating holes. It is an oligophagous leaf beetle. 

The eggs are elongated-oval, yellow to dark yellow, 

and about 1.5 mm in size. They are laid in clusters on the 

leaves. The young larvae are dark-colored and feed in 

groups. They consume the leaf tissue without 

damaging the veins. As they mature, the larvae move 

individually and can sometimes be found in large 

numbers, making them easy to spot. When disturbed, 

the larvae release a sharply scented, toxic liquid. In hot 

weather, this liquid evaporates quickly. Touching 

branches with larvae causes toxic vapors to appear in 

the air. 

Both of these species are common, dominant pests in 

the Zarafshan Reserve, especially in the aspen and 

poplar tree associations where these plants grow, and 

in the grasslands. 

CONCLUSION 

As a result of studying and analyzing the collected 

material, it was determined that the beetles can be 

found on poplar and aspen leaves. The beetles chew 

through the leaves, creating holes. They are 

oligophagous leaf beetles. The eggs are elongated-

oval, yellow to dark yellow, and about 1.5 mm in size. 

They are laid in clusters on the leaves. The young larvae 

are dark-colored and feed in groups. Information about 

the reproduction, feeding habits, and common 

locations of the poplar leaf beetle (Chrysomela populi) 

was collected. 

REFERENCES 

1. O.Mavlonov «Umirtqasizlar zoologiyasi» (2002) 

2. M.M.Abdulxayeva N.S.Yusupova D.S.Abdulxayeva 

«Biologiya» (2012) 

3. O. Mavlonov, K.Saparov, N.Toshmanov Zoologiya 

(Umurtqasiz hayvonlar) 

4. Internet materiyalari  

https://uz.wikial.top/wiki/Beetle 

5.  “HASHAROTLAR EKOLOGIYASI VA TUR 

TARKIBINING SISTEMATIK TAXLILI” TOSHKENT-

2015[7] 



Volume 04 Issue 12-2024 23 

                  

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 04 ISSUE 12    Pages: 19-23 

OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

6. de Jong, Y.S.D.M. (ed.) (2011) Fauna Europaea 

version 2.4 (faunaeur.org) 

7. Wang, Feng-Yan; Zhou, Hong-Zhang (20 November 

2013). "Four new species of the genus Smaragdina 

Chevrolat, 1836 from China (Coleoptera: 

Chrysomelidae: Cryptocephalinae: Clytrini)". 

Zootaxa. 3737 (3): 251–260. 

doi:10.11646/zootaxa.3737.3.4. PMID 25112753.

 


