:小盾片大三角形：腴片有多条额酥，少分支：弱节式222或333：腹部第2气门外露。重要种类：荔枝蛤 Tessaratoma papillosa Drury. 图35半翅目的前翅 A缘程：B后科：C科 触角5节，少数4节：有单聚：前足胫节有数列刚刻，似招足：小盾片大三角形或舌形：留节式3-33.常见种类：根士结Sma@p 二、脉翅目 上区名热莞括数和形秋，有无单眼，是有无孩后软物和牛，产摩看的形状。 (二)分科检索表 .粉龄科Coniopterygidac )触角来瑞新大显棒状：翅宽下方有1个装长的翅蜜：触角知于体长之半 龄科 .城角虻科 上电中大君有现本头，时有书大女 触角4节；喙4节；有单眼；前翅膜片有8～9条纵脉从同一基横脉上伸出；触角、前胸背板和足上常有扩展成叶状的突起；小盾片小三角形。常见种 类：稻棘缘蝽Cletus punctiger Dallas。 14．荔蝽科Tessaratomidae 触角4节，少数5节；有单眼；小盾片大三角形；膜片有多条纵脉，少分支；跗节式2-2-2或3-3-3；腹部第2气门外露。重要种类：荔枝蝽 Tessaratoma papillosa Drury。 图34 半翅目的前翅 A.盲蝽科；B.长蝽科；C.花蝽科；D.缘蝽科；E.姬蝽科；F.跳蝽科；G.膜蝽科；H.红蝽科 图35 半翅目的前翅 A.缘蝽科；B.盾蝽科；C.蝽科 15．蝽科Pentatomidae（图35C） 触角5节，稀有4节；有单眼；小盾片大三角形或舌形；膜片有多条纵脉，少分支；跗节式3-3-3；腹部第2气门被后胸侧板遮盖而不可见。重要种 类：稻绿蝽Nezara viridula (L.)。 16．土蝽科Cydnidae 触角5节，少数4节；有单眼；前足胫节有数列刚刺，似掘足；小盾片大三角形或舌形；跗节式3-3-3。常见种类：根土蝽Stibaropus jormosanus Takado et Yamagihara。 17．盾蝽科Scutelleridae（图35B） 触角5节或4节；有单眼；小盾片U形，盖住前翅和整个腹部；前翅与体等长，膜片不折叠。常见种类：丽盾蝽Chrysocoris grandis (Thunberg)。 18．龟蝽科Plataspidae 又称圆蝽科。触角5节；有单眼；小盾片半球形，盖住前翅和整个腹部；前翅长于体长，膜片折叠于小盾片之下。常见种类：筛豆龟蝽Megacopta cribraria (Fabricius)。 二、脉翅目 （一）分科特征 主要包括触角节数和形状，有无单眼，翅有无被粉状物和脉序，产卵器的形状等。 （二）分科检索表 脉翅目分科检索表 1 身体和翅上被有白粉；翅脉简单，无前缘横脉列和翅痣；体多小形··························· 粉蛉科Coniopterygidae - 体翅无白粉；翅脉复杂，有前缘横脉列和翅痣；体多为中型或大型································································· 2 2 触角末端膨大呈棒状或球杆状································································································································ 3 - 触角末端不膨大，丝状或念珠状····························································································································· 4 3 触角末端渐大呈棒状；翅痣下方有1个狭长的翅室；触角短于体长之半·························································· ····················································································································································· 蚁蛉科 Myrmeleontidae - 触角末端突然膨大呈球杆状；翅痣下方无延长的翅室；触角长于体长之半······················································· ······················································································································································ 蝶角蛉科 Ascalaphidae 4 前足特化为捕捉足；前胸延长································································································· 螳蛉科Mantispidae - 前足非捕捉足；前胸正常········································································································· 草蛉科Chrysopidae （三）常见科的主要特征和代表种类 1．草蛉科Chrysopidae（图36A～C） 触角丝状，约与体等长；前胸梯形或矩形；中后胸粗大；翅的前缘脉简单，不分叉。我国特有珍稀种类：横断华草蛉Sinochrysa hengduana Yang