Taxonomic-controversy
Guides
Callophrys gryneus muiri
Muir's Hairstreak, Muir Juniper Hairstreak
A western North American subspecies of Juniper Hairstreak, historically treated as a distinct species (Callophrys muiri) based on phenotypic differences and geographic isolation. DNA barcoding studies indicate it is genetically divergent from other C. gryneus populations, though its taxonomic status remains debated. Associated with coniferous habitats in California.
Callophrys gryneus nelsoni
Nelson's Hairstreak, Nelson's Juniper Hairstreak
Callophrys gryneus nelsoni is a western North American subspecies of juniper hairstreak butterfly. Its taxonomic status has been debated, with some authorities treating it as a distinct subspecies while others have elevated it to full species rank as Mitoura nelsoni. DNA barcode studies indicate it is genetically divergent from other C. gryneus populations, though the magnitude of divergence is comparable to that seen between other recognized species in the genus. Adults are associated with juniper woodlands.
Cyclargus
A genus of lycaenid butterflies established by Vladimir Nabokov in 1945, split from the genus Hemiargus. The genus contains several species distributed across the Caribbean and southern Florida, including the critically endangered Miami blue butterfly (C. thomasi bethunebakeri). Taxonomic validity remains debated among lepidopterists.
Euura
Euura is a genus of sawflies in the family Tenthredinidae, subfamily Nematinae, with exceptional species diversity concentrated in northern Holarctic regions rather than tropical zones. The genus contains both free-feeding larvae that consume plant foliage externally and gall-inducing species whose larvae develop entirely within plant galls. Gall-forming females inject a stimulant during oviposition that initiates gall growth before eggs hatch, a distinctive mechanism among gall insects. Taxonomic revision in 2014 consolidated several former genera (Eupontania, Phyllocolpa, Pontania, Tubpontania) into Euura based on phylogenetic evidence. The genus exhibits substantial genetic complexity, with frequent mito-nuclear discordance and multiple functional COI variants within individuals complicating species identification.
Macrosternodesmidae
Macrosternodesmidae is a family of flat-backed millipedes in the order Polydesmida, primarily distributed in western North America with some European representatives. The family contains approximately 9 genera and 16 described species, though taxonomic status remains disputed—some authorities treat it as a junior synonym of Trichopolydesmidae, while others recognize it as valid with two subfamilies: Macrosternodesminae and Nearctodesminae. Many species are troglobionts restricted to cave systems.
Melitara
Pricklypear Borers
Melitara is a genus of snout moths (Pyralidae: Phycitinae) established by Francis Walker in 1863. Species in this genus are specialist herbivores of cacti, particularly Opuntia species, with larvae that bore into cactus pads and stems. The genus is taxonomically contentious, with some sources treating it as a synonym of Zophodia while others retain it as valid. Melitara species serve as hosts for parasitoid wasps in the family Braconidae, and have been studied in the context of biological control of invasive cacti and as potential competitors to the invasive South American cactus moth Cactoblastis cactorum.
Protolophidae
Protolophid Harvestmen
Protolophidae is a family of harvestmen (order Opiliones) containing approximately six described species within the single genus Protolophus. The family is restricted to Western North America. Its taxonomic status remains unsettled; while traditionally recognized as a distinct family, some recent treatments have subsumed it within Sclerosomatidae.
Protolophus
Protolophus is a genus of harvestmen (Opiliones) in the family Protolophidae, distributed in the western United States. The genus was established by Banks in 1893 and contains eight extant species plus one fossil species from Baltic amber. The family's taxonomic status remains contested, with some treatments recognizing Protolophidae as distinct and others subsuming it within Sclerosomatidae.
Synetinae
Synetinae is a small subfamily of leaf beetles (Chrysomelidae) containing two genera, Syneta and Thricolema, with approximately 12 described species. The group is restricted to the Holarctic region, with most species occurring in North America and a smaller number in Europe and Asia. The taxonomic status of Synetinae has been disputed: historically treated as a separate subfamily, it was proposed as tribe Synetini within Eumolpinae based on larval similarities, though this placement remains contested due to conflicting morphological evidence.
Tarache
Tarache is a genus of moths in the family Noctuidae, subfamily Acontiinae, erected by Jacob Hübner in 1823. The genus comprises primarily New World species, most of which were formerly classified under the genus Acontia. Taxonomic authorities differ on its status: Catalogue of Life treats Tarache as accepted, while GBIF and some lepidopteran resources list it as a synonym of Acontia. The genus includes approximately 50 described species arranged in three main species groups (aprica, bilimeki, and lucasi groups).