Grass bug
Lat. “Stenodema laevigata“ Stenodema laevigatum, or sometimes Stenodema laevigata (also called Grass bug), is a carnivorous species of bug from Miridae family. The species have a gray to brown elongated body, with the eyes located backwards in the head. Sometimes they might come in green colour. They are 8–10 millimetres (0.31–0.39 in) in length, which makes it a rather big species of its kind. They are common in the United Kingdom, and throughout the rest of Europe.
Description Adults are 7–10 millimetres (0.28–0.39 in) long. The species are of light-green colour, but can come in yellow or brown. The species lacks femoral spurs, and have densely pitted prothorax.
Ecology The larvae are light yellowish and is born in summer, with adults taking over by August. Adults and larvae are both feeding on unripe grains, which includes: Alopecurus, Dactylis, Festuca and wheat. Sometimes, larvae might suck juices from leaves and stems. They start to eat grass seeds and flowers by later development. The larvae hibernate in winter, by living in a soil, and leaf litter. Both males and females mate in spring, with the males being greener than females. The larvae are active from May–July, after which the new generation appears, which will last till next spring.
Camouflage By autumn, the species turn brown, and start their overwintering. As soon as spring starts, their colour is changes to green, which camouflages them under a grass colour.
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flowchart LR
classDef active fill:#fff
arthropods("phylum: Arthropods"):::active
arthropods-->insects("class: Insects"):::active
insects-->true-bugs("suborder: True Bugs"):::active
true-bugs-->plant-bugs("family: Plant Bugs"):::active
plant-bugs-.->alfalfa-plant-bug(["species: Alfalfa Plant Bug"])
plant-bugs-.->apolygus-lucorum(["species: Apolygus lucorum"])
plant-bugs-.->calocoris-affinis(["species: Calocoris affinis"])
plant-bugs-.->campyloneura-virgula(["species: Campyloneura virgula"])
plant-bugs-.->closterotomus-biclavatus(["species: Closterotomus biclavatus"])
plant-bugs-.->common-green-capsid(["species: Common Green Capsid"])
plant-bugs-.->common-nettle-flower-bug(["species: Common Nettle Flower Bug"])
plant-bugs-.->deraeocoris-lutescens(["species: Deraeocoris lutescens"])
plant-bugs-.->dicyphus-errans(["species: Dicyphus errans"])
plant-bugs-.->european-tarnished-plant-bug(["species: European Tarnished Plant Bug"])
plant-bugs==>grass-bug(["species: Grass bug"]):::active
plant-bugs-.->halticus-luteicollis(["species: Halticus luteicollis"])
plant-bugs-.->handsome-plant-bug(["species: handsome plant bug"])
plant-bugs-.->hoplomachus-thunbergii(["species: Hoplomachus thunbergii"])
plant-bugs-.->lygus-pratensis(["species: Lygus pratensis"])
plant-bugs-.->meadow-plant-bug(["species: Meadow Plant Bug"])
plant-bugs-.->megaloceroea-recticornis(["species: Megaloceroea recticornis"])
plant-bugs-.->megalocoleus-tanaceti(["species: Megalocoleus tanaceti"])
plant-bugs-.->orthops-basalis(["species: Orthops basalis"])
plant-bugs-.->potato-mirid(["species: Potato Mirid"])
plant-bugs-.->psallus-varians(["species: Psallus varians"])
plant-bugs-.->red-spotted-plant-bug(["species: red-spotted plant bug"])
plant-bugs-.->spotted-plant-bug(["species: spotted plant bug"])
plant-bugs-.->three-spotted-nettle-bug(["species: Three Spotted Nettle Bug"])
plant-bugs-.->trigonotylus-ruficornis(["species: Trigonotylus ruficornis"])
plant-bugs-.->tupiocoris-rhododendri(["species: Tupiocoris rhododendri"])
plant-bugs-.->two-spotted-grass-bug(["species: Two-spotted Grass Bug"])
click alfalfa-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/alfalfa-plant-bug/"
click apolygus-lucorum href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/apolygus-lucorum/"
click calocoris-affinis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/calocoris-affinis/"
click campyloneura-virgula href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/campyloneura-virgula/"
click closterotomus-biclavatus href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/closterotomus-biclavatus/"
click common-green-capsid href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/common-green-capsid/"
click common-nettle-flower-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/common-nettle-flower-bug/"
click deraeocoris-lutescens href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/deraeocoris-lutescens/"
click dicyphus-errans href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/dicyphus-errans/"
click european-tarnished-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/european-tarnished-plant-bug/"
click grass-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/grass-bug/"
click halticus-luteicollis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/halticus-luteicollis/"
click handsome-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/handsome-plant-bug/"
click hoplomachus-thunbergii href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/hoplomachus-thunbergii/"
click lygus-pratensis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/lygus-pratensis/"
click meadow-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/meadow-plant-bug/"
click megaloceroea-recticornis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/megaloceroea-recticornis/"
click megalocoleus-tanaceti href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/megalocoleus-tanaceti/"
click orthops-basalis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/orthops-basalis/"
click potato-mirid href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/potato-mirid/"
click psallus-varians href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/psallus-varians/"
click red-spotted-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/red-spotted-plant-bug/"
click spotted-plant-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/spotted-plant-bug/"
click three-spotted-nettle-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/three-spotted-nettle-bug/"
click trigonotylus-ruficornis href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/trigonotylus-ruficornis/"
click tupiocoris-rhododendri href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/tupiocoris-rhododendri/"
click two-spotted-grass-bug href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/two-spotted-grass-bug/"
click arthropods href "/en/catalogue/arthropods/"
click insects href "/en/catalogue/arthropods/insects/"
click true-bugs href "/en/catalogue/arthropods/insects/true-bugs/"
click plant-bugs href "/en/catalogue/arthropods/insects/true-bugs/plant-bugs/"
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