Mirinae

Worldwide distribution with documented presence across multiple biogeographic regions including the Palearctic, Oriental, Afrotropical, Australasian, and Nearctic realms. Specific documented locations include: central Honshu, Japan; Vietnam (montane forests at 1250–1356 m altitude); New Zealand (introduced, non-native); Indonesia (Java, Sumatra); Philippines (Luzon, Mindanao); Cambodia; Korea; China; Papua New Guinea; Australia; and Africa.

Adults of some species appear in early spring; for example, Azumamiris vernalis adults are observed only in early May. The fourlined plant bug (Poecilocapsus lineatus) is active early in the growing season, with nymphs hatching from overwintered eggs and causing damage during spring.

Phytophagous; members feed on plant sap using piercing-sucking mouthparts. Some species inject salivary enzymes (pectinases) that liquefy plant tissues, causing persistent necrotic lesions. Documented host associations include: Poecilocapsus lineatus feeds on more than 250 plant species including vegetables, trees, shrubs, and herbaceous perennials such as Monarda (bee balm); Tinginotum species have been collected on Pinus kesiya (Khasi pine); Azumamiris vernalis is associated with Pleioblastus chino (gramineous dwarf bamboo); Sidnia kinbergi breeds in carrot seed crops.

• Poecilocapsus lineatus - feeds onMore than 250 plant species including vegetables, trees, shrubs, and herbaceous perennials
• Tinginotum - collected onPinus kesiya (Khasi pine)
• Azumamiris vernalis - associated withPleioblastus chino (gramineous dwarf bamboo)
• Sidnia kinbergi - breeds inCarrot seed crops

Some species are univoltine, producing one generation per year. Poecilocapsus lineatus overwinters as eggs in plant debris; nymphs hatch in spring and develop through several instars before maturing into adults. Azumamiris vernalis is confirmed univoltine with adults appearing only in early May.

Feeding causes characteristic damage: piercing plant tissue with needlelike stylets, pumping in salivary enzymes to digest cell contents, then sucking liquefied nutrients. Lingering enzymatic activity continues degrading cell walls after feeding ceases, producing necrotic spots that may drop out to create irregular holes. Some species are attracted to light traps.

Phytophagous herbivores that can influence plant health and productivity. Early-season feeding on perennials is often cosmetic and plants typically outgrow damage. Serve as prey for ground beetles and other soil-dwelling predators when dislodged from host plants.

Several species are agricultural and horticultural pests. Poecilocapsus lineatus is considered a significant pest of ornamentals and vegetables, though damage is typically cosmetic on established perennials. Management strategies include removing overwintering habitat (plant debris), physical removal by hand or soapy water, horticultural oils, insecticidal soaps, and water sprays to dislodge nymphs and adults. Introduced species in New Zealand (Closterotomus norvegicus, Stenotus binotatus, Sidnia kinbergi, Megaloceroea recticornis, Trigonotylus tenuis, Taylorilygus apicalis) have established non-native populations with potential economic impacts.

• Other Miridae subfamiliesDistinguished by tribal composition and specific morphological characters; Mirinae contains seven tribes (Herdoniini, Hyalopeplini, Mecistoscelini, Mirini, Restheniini, Scutelliferini, Stenodemini) with characteristic antennal, pronotal, and genitalic structures

• phytophagous
• pest
• plant bug
• piercing-sucking
• salivary enzymes
• necrotic spots
• univoltine
• introduced species

• BugGuide
• Wikipedia
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Who’s been sucking on my bee balm? Fourlined plant bug, Poecilocapsus lineatus — Bug of the Week
• Bee Balm Blues Courtesy of Fourlined plant bug, Poecilocapsus lineatus — Bug of the Week
• Introduced Mirinae of New Zealand (Hemiptera: Miridae)
• Azumamiris vernalis: a new genus and species of Mirini from central Japan (Heteroptera: Miridae: Mirinae)
• The genus Tinginotum Kirkaldy, 1902 (Hemiptera, Miridae, Mirinae) with description of a new species from Vietnam and additional notes on Southeast Asian materials.
• Genomic and transcriptomic analyses of residual invasive triple-negative breast cancer after neoadjuvant chemotherapy in the prospective MIRINAE trial (a randomized phase II trial of adjuvant atezolizumab plus capecitabine compared to capecitabine; KCSG-BR18-21).
• Randomized, phase II trial to evaluate the efficacy and safety of atezolizumab plus capecitabine adjuvant therapy compared to capecitabine monotherapy for triple receptor-negative breast cancer with residual invasive cancer after neoadjuvant chemotherapy (MIRINAE trial, KCSG-BR18-21).