Common corncockle vs common parlatoria scale

Agrostemma githago compared with Parlatoria proteus

Key Differences

Common corncockle is Critically Endangered while common parlatoria scale is Not Evaluated.

Taxonomic Classification

Rank	Common corncockle	common parlatoria scale
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Arthropoda (Arthropods)
Class	Magnoliopsida (Dicots)	Insecta (Insects)
Order	Caryophyllales (Caryophyllales)	Hemiptera (Hemiptera)
Family	Caryophyllaceae	Diaspididae
Genus	Agrostemma	Parlatoria
Species	Agrostemma githago	Parlatoria proteus

Conservation Status

Common corncockle

CR — Critically Endangered

common parlatoria scale

NE — Not Evaluated

Physical Characteristics

Attribute	Common corncockle	common parlatoria scale
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common corncockle

Habitat

Found across multiple habitat types including montane grasslands and shrublands, tropical and subtropical moist broadleaf forests, and temperate coniferous forests, among 13 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Lesotho), Asia (7 countries), Europe (24 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Brazil, Chile). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common parlatoria scale

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Widely distributed across Asia (Japan, Taiwan), Europe (10 countries), and North America (United States).

Common corncockle

Agrostemma githago, commonly known as common corncockle, is an annual flowering plant in the family Caryophyllaceae. Once a widespread weed of cereal crops across Europe, Asia, and beyond, this species is now Critically Endangered on the IUCN Red List due to the dramatic decline caused by modern agricultural practices, particularly improved grain cleaning and herbicide use. Corncockle is a tall, slender plant covered in silky white hairs, bearing large, solitary pink to purple flowers with distinctive dark veining. Its seeds contain toxic saponin compounds called githagins, which historically contaminated grain supplies. The species now survives primarily in wildflower conservation areas, seed banks, and traditional farmland conservation schemes. It typically grows in open, disturbed arable soils with full sun exposure. Biological traits of this species remain poorly documented in the scientific literature.

common parlatoria scale

Parlatoria proteus is an armored scale insect in the family Diaspididae, found in Japan, Taiwan, ten European countries, and the United States. It is a cosmopolitan pest species associated with a wide range of host plants across virtually all terrestrial habitats where cultivated trees and shrubs are present. The species infests the bark, leaves, and fruit of numerous hosts, including citrus, palms, figs, and ornamental plants, by piercing plant tissue and extracting sap. Infestations can lead to chlorosis, dieback, and fruit damage in heavily colonized plants. Female scale insects are sedentary once settled, protected beneath a waxy armored cover produced from molted exoskeletons and secretions. Males are short-lived winged forms involved only in reproduction. Conservation status has not been formally evaluated by the IUCN, consistent with its status as a widely distributed and economically significant agricultural pest rather than a species of conservation concern. Biological traits including average lifespan, body measurements, and detailed ecological dietary data remain poorly documented in standardized databases for this scale insect. Parlatoria proteus is managed through biological control agents, horticultural oils, and systemic insecticides in affected agricultural systems.