Stenodemini
Guides
Collaria
grass bugs
Collaria is a genus of grass-feeding plant bugs (Miridae: Mirinae: Stenodemini) established by Provancher in 1872. The genus comprises 14 recognized species distributed across the Neotropical and Afrotropical regions, with several species documented as agricultural pests of forage grasses and wheat. Species such as C. scenica and C. columbiensis have been studied extensively in Colombia, where they impact dairy production in the Bogotá plateau region. The genus is characterized by its association with Poaceae (grasses) and its potential for significant population increases under favorable climatic conditions, particularly during El Niño events.
Miridaegrass-bugpasture-pestagricultural-pestNeotropicalAfrotropicalColombiaclimate-sensitivityEl-NiñoEPGelectrical-penetration-graphspatial-distributionaggregated-distributionPoaceaewheat-pestdairy-productionintegrated-pest-managementStenodeminiProvancher-1872taxonomygenitalic-morphologyheat-unitsthermal-amplitudeprecipitation-dependentBogotá-plateauAltiplano-CundiboyacenseC.-scenicaC.-columbiensisC.-schwartziC.-oleosaC.-bolivianaC.-villiersiC.-improvisaC.-obscuricornisStenodema
grass bugs
Stenodema is a genus of plant bugs in the family Miridae, tribe Stenodemini, distributed across the Palearctic, Oriental, and Nearctic regions. Species are commonly known as grass bugs due to their association with graminoid monocots. The genus includes both trans-Palearctic and trans-Holarctic species, with some exhibiting wide geographic ranges and potential cryptic diversity. Stenodema species have been studied using integrative taxonomic approaches combining morphological examination of genitalia with molecular phylogenetics.
Trigonotylus
rice leaf bug
Trigonotylus is a genus of plant bugs in the family Miridae, tribe Stenodemini, containing approximately 18 described species. The genus has a cosmopolitan distribution with species in North America, Europe, Asia, and Hawaii. Several species are associated with grasses (Poaceae), with T. caelestialium being a significant agricultural pest of rice in Japan. The genus exhibits variation in host plant use, oviposition behavior, and seasonal life history strategies.