GB/T 33123-2026Detection and identification of Ctenopseustis obliquana (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part

1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 33123-2016 "Quarantine Identification Method for the Trefoil Moth". Compared with GB/T 33123-2016, the only differences are in the structural adjustment. Aside from integration and editorial changes, the main technical changes are as follows:

---The "Terms and Definitions" section has been revised (see Chapter 3, Chapter 3 of the.2016 edition);

---The content of "Basic Information on the Cotton Leaf Roller" has been revised (see Chapter 4, Chapter 4 of the.2016 edition);

---The "Methods and Principles" section has been revised (see Chapter 5, Chapter 5 of the.2016 edition);

---The section on "Apparatus and Reagents" has been revised, and the section on "Instruments and Equipment" has been added (see Chapter 6, Chapter 6 of the.2016 edition);

---The content of "On-site Inspection" has been changed (see Chapter 7,

7.1 of the.2016 edition);

---The word "breeding" has been changed (see 8.1,

7.2 in the.2016 version);

---The method for preparing winged slides has been modified (see 8.2.3,

8.2 in the.2016 version);

---Added "Identification Characteristics of the Tuberculidae Family" (see 8.3.1);

---Some identification characteristics of adults have been modified (see 8.3.3,

1 Scope

GB/T 33123-2026 is the Chinese national standard covering the brownheaded leafroller - a New Zealand tortricid moth not present in China, intercepted on imported fruit, identified by morphology of the adult and larva and by molecular methods. It replaces GB/T 33123-2016 and has been in force since 1 October 2026. It was issued on 31 March 2026 and takes effect on 1 October 2026, replacing GB/T 33123-2016. The document is under the responsibility of the Standardization Administration of China. This page is published from the official record of the 2026 edition; the clause text of a standard this recent is not yet in circulation, and the figures, limits and tables it contains are those of the document itself, delivered in full with the English translation.

This document applies to the quarantine and identification of the beet webworm.

2 Normative references

This document has no normative references.

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Valva The paired grasping organs in the male external genitalia of Lepidoptera.

Note. These are paired, plate-like structures that evolved from the ninth abdominal segment. They are mostly plate-like, large, and prominent.

3.2 claw-shaped uncus Hook-like or claw-like projections on the male external genitalia of insects.

Note. The flat or hook-like structure at the rear end of the dorsal hood of Lepidoptera insects that curves downwards.

3.3 Socius The club-shaped protrusion on the posterior margin of the dorsal hood of male lepidopteran insects.

3.4 ductusbursae A duct in female Lepidoptera that extends from the vulva to the copulatory sac.

3.5 cystic signum Highly ossified spiky or hook-like structures within the copulatory sac wall of female Lepidoptera external genitalia.

Note. One or more.

4.Basic Information on the Scaly Leaf Roller Chinese name. (also known as the striped leafroller moth). Synonyms. Brown-headed leafroller, New Zealand oblique comb leafroller. English name. Obliquetortrix, Light-brown applemoth, Appleleafroler, Brown-headedleafroler.