Platycotis

Stål, 1869

Species Guides

Platycotis is a of treehoppers in the Membracidae, comprising approximately 13 described . The genus is characterized by pronounced pronotal modifications typical of the family. The best-studied species, P. vittata (the oak ), exhibits presocial including maternal guarding and nymphal . Species in this genus are associated with woody plants, particularly oaks.

Platycotis vittata by (c) John Hibbard, some rights reserved (CC BY), uploaded by John Hibbard. Used under a CC-BY license.

Platycotis vittata by (c) Cricket Raspet, some rights reserved (CC BY), uploaded by Cricket Raspet. Used under a CC-BY license.

Platycotis maritima by (c) Abby Hyde, some rights reserved (CC BY), uploaded by Abby Hyde. Used under a CC-BY license.

Pronunciation

How to pronounce Platycotis: /ˌplætɪˈkoʊtɪs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Members of Platycotis can be distinguished from other membracid by their placement in the tribe Hoplophorionini. Specific diagnostic features for genus-level identification require examination of pronotal structure and other morphological characters not detailed in available sources.

Images

Habitat

Associated with woody vegetation; P. vittata has been documented on Quercus (oak) in dry-mesic oak/hickory forest and similar .

Distribution

New World distribution; P. vittata occurs in the United States (Arizona, California, eastern coastal plain) and extends into Mexico. The as a whole is distributed in the Nearctic and Neotropical regions.

Seasonality

P. vittata is with discrete in early spring and autumn throughout its range.

Diet

Xylem-feeding; P. vittata feeds on oak sap, with reproductive success linked to amino nitrogen levels in plant sap.

Host Associations

Quercus - primary plantP. vittata documented on Quercus stellata (post oak) and other oak

Life Cycle

P. vittata is with two discrete per year. Females of both generations undergo . Winter diapause can be broken by access to newly flushing trees with high amino nitrogen levels in sap. masses are guarded by females. Nymphs form with maternal care.

Behavior

Presocial documented in P. vittata, including guarding by females and nymphal with associated maternal care. Courtship, copulation, and post-copulatory behaviors have been described for P. vittata.

Ecological Role

Member of arboreal sap-feeding guild; honeydew production may facilitate associations, though specific mutualisms for Platycotis are not well documented.

Similar Taxa

UmboniaBoth belong to Membracinae and share pronounced pronotal modifications; Umbonia is distinguished by different tribal placement (Membracini) and exhibits marked in some
CyrtolobusBoth in Membracidae with expanded pronota; Cyrtolobus is placed in tribe Smiliini and differs in pronotal structure and associations

More Details

Taxonomic history

The was established by Stål in 1869. The genus contains approximately 13 described according to current catalogs.

Research significance

P. vittata has been extensively studied as a model for -plant mediated variation and geographic differentiation in the arboreal sap-feeding guild. Research has demonstrated that disrupting synchronization between P. vittata life history and host-plant can cause abnormal oviposition patterns and reduced reproductive success.