WAeolanthes is a genus of small moths in the superfamily Gelechioidea.
WAmpittia is the genus of bush hoppers in the skipper butterfly family, Hesperiidae. It is the only member of the tribe Ampittiini, but many skipper butterflies are yet to be assigned to tribes, so this might change eventually.
WAttevidae is a family of moths of the Yponomeutoidea superfamily, containing only one genus, Atteva. The group has a pantropical distribution; however, the range of at least one species, Atteva aurea, extends into the temperate zone. No consistent hypotheses regarding the relationships, placement, and ranking of Attevidae have been published, but the prevalent view is that they likely form a monophyletic group within the Yponomeutoidea.
WBaronia brevicornis, commonly known as the short-horned baronia, is a species of butterfly in the monotypic genus Baronia and is placed in a subfamily of its own, the Baroniinae, a sister group of the remainder of the swallowtail butterflies. It is endemic to a very small area of Mexico, where the distribution is patchy and restricted.
WBedelliidae is a small family of small, narrow-winged moths; most authorities recognize just a single genus, Bedellia, previously included in the family Lyonetiidae. The family is still included in the Lyonetiidae as the subfamily Bedelliinae by some authors.
WBucculatricidae or (Bucculatrigidae) is a family of moths. This small family has representatives in all parts of the world. Some authors place the group as a subfamily of the family Lyonetiidae.
WCalinaga is the sole genus of the monotypic nymphalid butterfly subfamily Calinaginae. Its species occur in South Asia and Southeast Asia. The evolutionary history of Calinaga remains a mystery until today. Recent research indicated that the common ancestor of Calinaga first split in the Eocene in southern China. This was most likely due to a consequence of geological and environmental impacts of the collision of the Indian and Asian subcontinents.
WCuretis, the sunbeams, is a genus of gossamer-winged butterflies (Lycaenidae) from Southeast Asia. They are presently the only genus in the subfamily Curetinae.
WDaplasa is a genus of moths in the subfamily Lymantriinae of the family Erebidae erected by Frederic Moore in 1879. It is the sole member of the tribe Daplasini erected Jeremy Daniel Holloway and Houshuai Wang in 2015.
WElodina is a genus of butterflies in the family Pieridae. It is the only genus of the tribe Elodinini. It contains about 30 species.
WEuschemon rafflesia, the regent skipper, is a butterfly in the skipper family, Hesperiidae. It is found in Australia and is the only member of its genus, Euschemon, and subfamily, Euschemoninae.
WLasiocampoidea is the superfamily of "lappet moths" (Lasiocampidae), containing one family of small to very large moths.
WLeptosia, commonly called wood whites, is a genus of pierid butterflies. It is the only genus of the tribe Leptosiaini. Leptosia are found in Africa, except for Leptosia nina, which ranges from India to Australia, and Leptosia lignea, which is found only on Sulawesi. All have a frail appearance and broad rounded wings. They are only distantly related to the Palearctic wood whites Leptidea (Dismorphiinae).
WMeharia is a genus of moths belonging to the family Cossidae.
WMelanargia is a genus of butterflies belonging to the family Nymphalidae and the subfamily Satyrinae.
WNiphanda is a genus of butterflies in the family Lycaenidae and only member of the Niphandini tribe. The members (species) of this genus are found in the Indomalayan realm and the Palearctic realm. The genus was erected by Frederic Moore in 1875.
WPapilio is a genus in the swallowtail butterfly family, Papilionidae, as well as the only representative of the tribe Papilionini. The word papilio is Latin for butterfly.
WPseudopontia is a genus of butterflies found only in wet forests of tropical Africa. It is the only genus in the subfamily Pseudopontiinae. It was traditionally thought to contain only one species (monotypic), Pseudopontia paradoxa. However, a recent study showed there are at least five species of Pseudopontia which can be distinguished genetically and by details of wing veins. Each is found primarily in a different part of Africa, though several of the species have overlapping geographic distributions.
WStalachtis is a genus of metalmark butterflies. It is currently the only member of the tribe Stalachtini, but many metalmark butterflies are yet to be unequivocally assigned to tribes, so this might change eventually.
WTellervini is a tribe of danaid butterflies with only the one genus Tellervo, with six widely distributed species found in the Australasian realm and the Indomalayan realm. The taxon is apparently monophyletic, but its relationship with the other two danaid tribes is yet uncertain. The phylogeography of the group is also a challenge to those who hold to a Cenozoic origin of the butterflies.
WThymelicus is a Palearctic genus in the skipper butterfly family, Hesperiidae. It is the only member of the tribe Thymelini, but many skipper butterflies are yet to be assigned to tribes, so this might change eventually.
WTyta luctuosa is a noctuid ("owlet") moth. Its common names include four-spotted moth and field bindweed moth. It is the only member of the genus Tyta, which belongs to the Metoponiinae subfamily. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. The genus was erected by Gustaf Johan Billberg in 1820.