Chortophagini

Otte, 1995

Genus Guides

5

Chortophagini is a tribe of band-winged grasshoppers within the Oedipodinae ( Acrididae). The tribe was established by Otte in 1995 and contains multiple distributed primarily in North America. Members are characterized by their association with band-winged grasshopper and . The tribe is part of a diverse group of grasshoppers that inhabit open, often xeric environments.

Chortophaga viridifasciata by no rights reserved, uploaded by Andrew Lih. Used under a CC0 license.Chimarocephala pacifica by (c) Darin J McGuire, some rights reserved (CC BY), uploaded by Darin J McGuire. Used under a CC-BY license.Encoptolophus costalis by (c) Sam Kieschnick, some rights reserved (CC BY), uploaded by Sam Kieschnick. Used under a CC-BY license.

Pronunciation

How to pronounce Chortophagini: //kɔr.toʊˈfæ.dʒə.naɪ//

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Identification

Chortophagini can be distinguished from other Oedipodinae tribes by genitalic characters, particularly male aedeagal structure and epiphallus . The tribe generally includes species with relatively robust bodies and hind adapted for jumping. Accurate identification to tribe level requires examination of internal genitalia or detailed external morphological features not visible in field observations.

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Habitat

within Chortophagini primarily inhabit open, dry to mesic grasslands, prairies, and weedy fields. They are associated with disturbed including roadsides, agricultural margins, and rangelands. Many species show preference for areas with sparse to moderate vegetation cover and well-drained soils.

Distribution

The tribe has a primarily Nearctic distribution, with occurring across North America from Canada through the United States and into northern Mexico. Distribution patterns vary by , with some showing broad continental ranges and others restricted to specific regions or types.

Seasonality

Activity periods vary by and latitude. Most species are with present from mid-summer through early autumn. Some northern species may have shorter adult seasons limited to late summer, while southern may show extended activity periods.

Diet

Herbivorous, feeding on a variety of grasses and forbs. Specific plant associations vary by and may include both native and introduced plant species.

Life Cycle

Hemimetabolous development with , nymph, and stages. Eggs are deposited in soil . Nymphs pass through multiple instars before reaching adulthood. typically occurs as eggs, with hatching in spring.

Behavior

activity with peak feeding and movement during warm, sunny conditions. Strong jumping ability using enlarged hind legs. Many produce crepitating sounds during . Males may engage in calling to attract females.

Ecological Role

Primary consumers in grassland . Serve as significant food source for vertebrate and including birds, small mammals, and predatory insects. Nutrient cycling through herbivory and deposition of .

Human Relevance

Some may reach locally high densities and contribute to in rangelands. Individual species are not known as major agricultural pests or locusts, though they may contribute to overall grasshopper pressure in some areas. Used as indicators of grassland condition in ecological studies.

Similar Taxa

  • OedipodiniAnother tribe within Oedipodinae; distinguished by differences in male genitalia structure and wing banding patterns
  • SphingonotiniTribe of Oedipodinae with overlapping distribution; Sphingonotini often have more slender bodies and different pronotal shapes
  • LocustiniTribe containing some true locust ; Chortophagini lacks the phase and swarming characteristic of some Locustini

More Details

Taxonomic History

The tribe was formally described by Daniel Otte in 1995 as part of his comprehensive revision of North . Prior to this, now placed in Chortophagini were variously assigned to other groupings within Oedipodinae.

Sources and further reading