Banasa

Stål, 1858

Banasa stink bugs

Banasa is a of in the , tribe Pentatomini. These -feeding are primarily associated with , particularly conifers and trees. The genus contains at least eleven in North America, with additional species described from South America including the recently described B. maculata from the Brazilian Atlantic Forest. Species identification typically requires microscopic examination of morphological characters.

Banasa calva by (c) jimeckert49, some rights reserved (CC BY). Used under a CC-BY license.Banasa by (c) Eridan Xharahi, some rights reserved (CC BY). Used under a CC-BY license.Banasa by (c) Jason Eckberg, some rights reserved (CC BY), uploaded by Jason Eckberg. Used under a CC-BY license.

Pronunciation

How to pronounce Banasa: /bəˈnɑːsə/

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

Identification

-level identification within Banasa requires microscopic examination of characters such as male (pygophore shape, gonocoxites, proctiger form) and pronotal markings. Banasa maculata belongs to the 'cuspidata group' characterized by an projection on each posterolateral angle of the pygophore. stages show distinguishing abdominal color patterns, with light and dark observed in later of some species. Several North species are visually similar and cannot be reliably separated without dissection.

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Habitat

Associated with forested and wooded . Banasa maculata occurs in the Brazilian Atlantic Forest. Banasa tumidifrons is associated with Rocky Mountain Juniper in the western United States. Banasa sordida occurs in coastal California on cypress .

Distribution

North America (at least eleven ), South America (Brazilian Atlantic Forest), western United States, coastal California.

Seasonality

overwinter and become active on warm winter days. Activity observed in January in Kansas, USA during unseasonably warm conditions.

Diet

; feeds on sap. Specific associations include: fruits of Miconia sellowiana (Melastomataceae) for B. maculata; Rocky Mountain Juniper (Juniperus scopulorum) for B. tumidifrons; Monterey Cypress and Gowen Cypress (Cupressus macrocarpa, C. goveniana) for B. sordida.

Host Associations

  • Miconia sellowiana - Fruits; laboratory rearing of B. maculata
  • Juniperus scopulorum - Rocky Mountain Juniper; B. tumidifrons
  • Cupressus macrocarpa - Monterey Cypress; B. sordida
  • Cupressus goveniana - Gowen Cypress; B. sordida

Life Cycle

For B. maculata: to in 37.6 ± 13.24 days; five nymphal ; most frequent clutch size 12 eggs; highest mortality in fifth instar (45.9%). Eggs have reticulate with deep and irregular rims. -width measurements overlap only between fourth and fifth instars.

Behavior

Overwinters as , becoming active on warm winter days. Some exhibit color in nymphal stages (light and dark in third-fifth of B. maculata).

Ecological Role

component of forest and woodland . for predatory including Astata unicolor, which has been documented capturing Banasa dimidiata.

Human Relevance

Generally not considered an economic pest, though some feed on commercially important conifers. Banasa calva is noted as rarely if ever being a pest despite feeding on tree and shrub sap. Serves as for agents targeting .

Similar Taxa

  • Other Pentatomidae generaSimilar ; requires examination for definitive identification to
  • Banasa calvaVisually similar to other Banasa ; requires microscopic characters for separation

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Sources and further reading