Coi
Guides
Abana
Abana is a Neotropical genus of proconiine sharpshooters in the leafhopper family Cicadellidae. A 2025 revision recognizes 13 species, including seven described from Colombia, Panama and Peru. Species delimitation relies on comparative morphology and mitochondrial DNA, because color can vary within a species and some species have very similar male genitalia.
Euchalcia
Euchalcia is a genus of owlet moths in the family Noctuidae, subfamily Plusiinae. Species occur across Europe and Central Asia, with notable diversity in high-mountainous regions of Kyrgyzstan and Kazakhstan. DNA studies using mitochondrial COI gene sequences indicate greater genetic divergence among Central Asiatic high-mountain populations compared to European species. The genus was established by Hübner in 1821.
Ixodes kaiseri
Ixodes kaiseri is an accepted species of hard tick in the family Ixodidae. A 2023 study documented it in Slovakia and identified specimens using both morphology and DNA sequences. In that study, nymphs were collected from European badgers and females from red foxes; comparisons with I. canisuga highlighted several useful structural differences.
Melanobombus
Melanobombus is stored here at genus rank, but current taxonomic sources treat it as a subgenus of the bumblebee genus Bombus, and GBIF flags genus-level use as doubtful. A global revision recognized 25 species, up from 17 in an earlier morphology-based treatment, by comparing COI DNA barcodes with morphological groupings. The group is notable for difficult species boundaries among widespread and variable bumblebees.
Orthocomotis
Orthocomotis is a Neotropical genus of tortricid moths. The GBIF backbone currently lists 67 accepted named species. A study of museum specimens sampled more than 20 species at 17 localities in Colombia, Ecuador, and Peru. Taxonomic work on the genus has combined short mitochondrial DNA barcodes with genital morphology to distinguish sampled species.
Pleotrichophorus
Pleotrichophorus is a genus of aphids in the family Aphididae, tribe Macrosiphini, established by Börner in 1930. The genus contains species distributed across Europe, Southeastern Asia, and North America. P. glandulosus, described from Germany, serves as the type species. Molecular phylogenetic analyses place Pleotrichophorus within Macrosiphini sensu stricto.
Protoptilinae
Protoptilinae is the most diverse subfamily of Glossosomatidae, the saddle- or tortoise-case-making caddisflies. The subfamily contains 18 genera with a strikingly disjunct global distribution: five genera occur in the East Palaearctic and Oriental regions, while the remaining thirteen genera are restricted to the Nearctic and Neotropical regions. Members construct portable cases from mineral or plant material. The subfamily has undergone extensive taxonomic revision based on adult morphology and molecular phylogenetics, resulting in several new synonymies and refined generic diagnoses.
Rhopalosiphina
Rhopalosiphina is a subtribe of aphids (Aphididae: Aphidinae) established by Mordvilko in 1914. It includes the genus Schizaphis and related taxa. A 2018 study of endemic New Zealand populations revealed exceptionally high mitochondrial DNA diversity within this group, with up to five distinct lineages identified from host plants Aciphylla and Dracophyllum.
Shellenius
Shellenius is a small genus of planthoppers in the family Derbidae, subfamily Otiocerinae, tribe Otiocerini. The genus was established by Ball in 1928 and contains species distributed in the eastern United States and Mesoamerica. At least one species has been documented in association with palms in Costa Rica. A recent taxonomic revision transferred Otiocerus interruptus Fowler to this genus as Shellenius interruptus.
Stegana
vinegar flies
Stegana is a genus of vinegar flies (Drosophilidae) comprising at least 140 described species. The genus is characterized by high morphological conservatism, particularly in the subgenus Orthostegana, where evolutionary stasis has produced numerous cryptic species that are difficult to distinguish by external morphology alone. Species delimitation often requires integrative approaches combining molecular data (mitochondrial COI and ND2 genes) with detailed morphological analysis.
Sycanus
Sycanus is a genus of assassin bugs in the family Reduviidae. A modern Chinese revision analyzed 81 DNA-barcode samples alongside morphology and recognized 12 species in its sampled material, including three species described as new. Published work documents the genus in China and Vietnam, while a species-level study describes S. bifidus as widespread in southern China. Reduviids are predators, and a review identifies Sycanus as a natural enemy of agricultural and forestry pests.
Tomosvaryella
big-headed flies
Tomosvaryella is a genus of big-headed flies in the family Pipunculidae. The genus has a cosmopolitan distribution and is taxonomically well-studied in multiple regions. It contains over 100 species in Australia alone, with substantial diversity also documented in the Middle East, Colombia, and other regions. Species-level taxonomy relies heavily on morphological characters and mitochondrial COI barcode sequence data.
Trichobaris compacta
datura weevil
Trichobaris compacta is a flower weevil in the family Curculionidae, commonly known as the datura weevil. The species has been documented from the southwestern United States through the Pacific coastal ranges of Mexico to the Tehuantepec Isthmus. Genetic analysis indicates it forms a single genealogical lineage with admixed population structure, showing no geographic barriers to gene flow across its range despite utilizing different host plant species in different regions.
Weygoldtia hainanensis
Weygoldtia hainanensis is a whip spider (order Amblypygi) described from Hainan, China. It is placed in the family Charinidae and was distinguished from similar Weygoldtia species using a combination of leg and mouthpart characters. DNA from two individuals also supported its recognition as a distinct species within Weygoldtia.