Rapid differentiation between male and female adults of <em>Eucryptorrhynchus chinensis</em>

CHEN Chong; YU Qianqian; LIU Zhenkai; SUN Yaowu; CAO Chuanjian; BAO Shan; WEN Junbao

doi:10.11833/j.issn.2095-0756.2013.02.025

Volume 30 Issue 2

Mar. 2013

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CHEN Chong, YU Qianqian, LIU Zhenkai, SUN Yaowu, CAO Chuanjian, BAO Shan, WEN Junbao. Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis[J]. Journal of Zhejiang A&F University, 2013, 30(2): 309-312. doi: 10.11833/j.issn.2095-0756.2013.02.025

Citation:

CHEN Chong, YU Qianqian, LIU Zhenkai, SUN Yaowu, CAO Chuanjian, BAO Shan, WEN Junbao. Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis[J]. Journal of Zhejiang A&F University, 2013, 30(2): 309-312. doi: 10.11833/j.issn.2095-0756.2013.02.025

Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis

doi: 10.11833/j.issn.2095-0756.2013.02.025

1.
Key Laboratory for Silviculture and Conservation of Ministry of Education，Beijing Forestry University，Beijing 100083;
2.
Forest Quarantine Station of Lingwu，Lingwu 751400，Ningxia，China;
3.
Forest Diseases and Insect Pests Control and Quarantine Station of Ningxia Hui Autonomous Region，Yinchuan 750004，Ningxia，China

More Information

Corresponding author: WEN Junbao
Received Date: 2012-03-27
Rev Recd Date: 2012-05-18
Publish Date: 2013-04-20

Abstract

The male and female adults of Eucryptorrhynchus chinensis （a weevil pest） have a very similar external morphology. Thus，to determine external morphological characteristics that could distinguish between the sexes，observation of a large number of E. chinensis adults was conducted. A random sample of 2 389 adults in Linhe town，Lingwu，Ningxia，then observation with the naked eye and anatomical lens. Results showed that the sexes differed in the shape of their metathoracic sternite where the medioventral line stretched over the metathoracic sternite in the male，but opposite in the female adult and both sides of interrupted position were convex. Also，compared with the female，male adults of E. chinensis had the last section of their abdominal webs divided into two sections for a total of 7 in the male and 8 in the female. Since the sexual dimorphism of the metathoracic sternite was readily seen with the naked eye，male and female adults of E. chinensis could be effectively determined.［Ch，2 fig. 1 tab. 5 ref.］
- forest protection,
- Eucryptorrhynchus chinensis,
- sexing,
- distinguish with the naked eye,
- morphology

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis

1. Key Laboratory for Silviculture and Conservation of Ministry of Education，Beijing Forestry University，Beijing 100083;

2. Forest Quarantine Station of Lingwu，Lingwu 751400，Ningxia，China;

3. Forest Diseases and Insect Pests Control and Quarantine Station of Ningxia Hui Autonomous Region，Yinchuan 750004，Ningxia，China

Corresponding author: WEN Junbao

Received Date: 2012-03-27

Rev Recd Date: 2012-05-18

Publish Date: 2013-04-20

Key words:

Abstract: The male and female adults of Eucryptorrhynchus chinensis （a weevil pest） have a very similar external morphology. Thus，to determine external morphological characteristics that could distinguish between the sexes，observation of a large number of E. chinensis adults was conducted. A random sample of 2 389 adults in Linhe town，Lingwu，Ningxia，then observation with the naked eye and anatomical lens. Results showed that the sexes differed in the shape of their metathoracic sternite where the medioventral line stretched over the metathoracic sternite in the male，but opposite in the female adult and both sides of interrupted position were convex. Also，compared with the female，male adults of E. chinensis had the last section of their abdominal webs divided into two sections for a total of 7 in the male and 8 in the female. Since the sexual dimorphism of the metathoracic sternite was readily seen with the naked eye，male and female adults of E. chinensis could be effectively determined.［Ch，2 fig. 1 tab. 5 ref.］

Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis

doi: 10.11833/j.issn.2095-0756.2013.02.025

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis

doi: 10.11833/j.issn.2095-0756.2013.02.025

Corresponding author: WEN Junbao

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Rapid differentiation between male and female adults of Eucryptorrhynchus chinensis

doi: 10.11833/j.issn.2095-0756.2013.02.025

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doi: 10.11833/j.issn.2095-0756.2013.02.025

Corresponding author: WEN Junbao

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