| 田 旭1, 2, 3, 李金梦1, 3, 史彩华4, 汪汉成3, 高 贵5, 孙智荣5*, 李文红2*.益蝽不同发育阶段的形态特征[J].植物保护,2024,50(5):106-111. |
| 益蝽不同发育阶段的形态特征 |
| Morphological characteristics of predatory stink bug Picromerus lewisi Scott at different developmental stages |
| 投稿时间：2023-10-25 修订日期：2023-12-06 |
| DOI：10.16688/j.zwbh.2023552 |
| 中文关键词: 益蝽 卵 若虫 成虫 形态特征 |
| 英文关键词:Picromerus lewisi egg nymph adult morphological characteristics |
| 基金项目:贵州省科技基金重点项目（黔科合基础-ZK［2023］重点023）；贵州省烟草公司黔西南州公司科技项目（202208） |
| 作者 | 单位 | E-mail | | 田 旭1, 2, 3, 李金梦1, 3, 史彩华4, 汪汉成3, 高 贵5, 孙智荣5*, 李文红2* | 1. 长江大学农学院, 荆州 434025
2. 贵州省农业科学院植物保护研究所, 贵阳 550006
3. 贵州省烟草科学研究院, 贵阳 550081
4. 湖北文理学院, 襄阳 441053
5. 贵州省黔西南州烟草公司, 兴义 562400 | 孙智荣szr6210734@126.com；李文红liwh2015@126.com |
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| 中文摘要: |
| 本文采用体视镜对益蝽Picromerus lewisi各虫态的形态特征进行了观察。结果表明:益蝽卵粒为圆形或卵圆形, 卵块呈长方形, 卵壳表面具金属光泽, 呈金黄色, 假卵盖圆形, 破卵器三角状, 在假卵盖的外域成一环。1～2龄若虫暗红色, 无翅芽; 3龄若虫黑色, 4龄若虫浅褐色; 5龄若虫淡土黄色, 翅芽黑褐色。成虫体黑褐色, 前翅革片端半部及膜片基部淡黄色或黄白色; 小盾片上部的粗刺顶端呈二分叉状; 腹部气门淡黄褐色; 足黑色, 多细毛。雄虫腹部近三角形, 雌虫腹部似卵圆形; 雌成虫腹下第3～6节中央有4个黑斑, 初呈小黑点, 渐大至宝塔状大黑斑, 雄成虫腹下第3～6节中央有4个黑斑, 初呈小三角, 渐大至摇铃状大黑斑。 |
| 英文摘要: |
| The morphological characteristics of different stages of predatory stink bug Picromerus lewisi Scott were examined using stereoscopy. The results showed that P. lewisi eggs were circular or ovoid, and the egg mass was rectangular with metallic and golden eggshell on its surface. The false egg cover was circular with a triangular egg breaker, forming a ring outside the false egg cover. The first and second instar nymphs were dark red, without wing buds, while the third instar nymphs were black. The fourth instar nymphs were light brown. By the fifth instar, the body color turned light yellow with clearly visible black-brown wing buds. Adult P. lewisi were black with a light yellow or yellowish white color on the end half of the forewing leather and the base of the membrane. The top of the thick spines on the upper part of the scutellum was bifurcated, and the abdominal valve was light yellow-brown. All legs were black with many fine hairs. The abdomen of male P. lewisi adults was nearly triangular, while that of females was ovoid. There were four black spots in the center of the third to sixth segments of the abdomen in female adults, initially appearing as small black spots and gradually increasing in size until they resembled a pagoda-shaped large black spot. In male adults, there were four black spots in the center of the third to sixth segments of the abdomen, initially appearing as small triangle and gradually increasing in size until resembling a bell-shaped large black spot. |
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