''Ayuthia spectabile'', the only species in the

monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

''Ayuthia'', is commonly known as the milky

cicada The cicadas () are a superfamily, the Cicadoidea, of insects in the order Hemiptera (true bugs). They are in the suborder Auchenorrhyncha, along with smaller jumping bugs such as leafhoppers and froghoppers. The superfamily is divided into two ...

or white ghost cicada, belongs to the subfamily

Cicadinae The Cicadinae are a subfamily of cicadas, containing the translucent cicadas. They are robust cicadas and many have gaudy colors, but they generally lack the butterfly-like Opacity (optics), opaque wing markings found in many species of the rel ...

; the genus was previously in the tribe

Tosenini Tosenini is a monogeneric tribe of cicadas in the subfamily Cicadinae. Species in Tosenini have been recorded from the Indomalayan realm, but genera in this "taxonomically unstable group of Asian cicada tribes" have been placed elsewhere. Genera ...

, but recent studies have placed it in the tribe Ayuthiini , together with another monotypic genus '' Distantalna''.

Distribution

The species has been reported from Vietnam, Thailand and peninsular Malaysia in Southeast Asia.Sanborn, A. F., Villet, M. H. 2014. ''Catalogue of the Cicadoidea (Hemiptera: Auchenorrhyncha)''. Academic Press, Elsevier. 1,002 pp. It was described by

William Lucas Distant William Lucas Distant (12 November 1845 Rotherhithe – 4 February 1922 Wanstead) was an English entomologist. Biography Early years Distant was born in Rotherhithe, the son of whaling captain Alexander Distantspecies:B.R. Subba Rao, Rao, B.R ...

in 1919.Distant WL (1919) Description of a new genus and species of the homopterous family Cicadidae. ''Annals and Magazine of Natural History''. London. (Ser. 9), 3: 43-44
BHL

Description

The head, including the eyes, is narrower than the base of the mesonotum and almost as long as the

pronotum The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum (dorsal), the prosternum (ventral), and the propleuron (lateral) on e ...

. The forehead is obliquely depressed. The distance between the

ocelli A simple eye or ocellus (sometimes called a pigment pit) is a form of eye or an optical arrangement which has a single lens without the sort of elaborate retina that occurs in most vertebrates. These eyes are called "simple" to distinguish the ...

and the eyes is greater than the space between them, which has a broad and strong longitudinal groove. The pronotum is clearly shorter than the

mesonotum The mesothorax is the middle of the three segments of the thorax of hexapods, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum (dorsal), the mesosternum ( ventral), and the mesopleuron (lateral) ...

, moderately convex in laterality with a coarsely serrated margin. The posterior margin is moderately wide and has truncated lateral angles. The operculum in the male is short and wide, extending beyond the base of the metasternum. The anterior femora are strongly spiny below. The rostrum reaches the base of the metasternum. Both pairs of wings are semi-opaque, with the forewings containing eight apical cells. (Toulouse) Ayuthia spectabile MHNT CUT 2022.23.1 - Male dorsal - Malaysia.jpg, ♂ MHNT (Toulouse) Ayuthia spectabile MHNT CUT 2022.23.1 - Male ventral - Malaysia.jpg, ♂ △ MHNT (Toulouse) Ayuthia spectabile MHNT CUT 2022.23.1 - Female dorsal - Malaysia.jpg, ♀ MHNT (Toulouse) Ayuthia spectabile MHNT CUT 2022.23.1 - Female ventral - Malaysia.jpg, ♀ △ MHNT

References

External links

* {{Taxonbar, from=Q51487591, from2=Q51487665 Cicadinae Monotypic Hemiptera genera Insects described in 1919 Taxa named by William Lucas Distant Hemiptera of Asia