Although less than 30% of the carabid beetle species were brachypterous
or apterous and are incapable of flying in the lowland areas (altitude 140-680 m) of Mt.
We collected 410 individuals (77 macropterous and 333 brachypterous
, see details in Table 1) of Metrioptera roeselii from which we selected equal numbers (42-42) of macropterous and brachypterous
individuals, with a nearly equal proportion of males (40) and females (44).
SPECIMENS EXAMINED: Only brachypterous
form: USA: Colorado: El Paso Co.; Peyton Road, 5,835'-5,875', Pitfall Trap at Station 1, 7, and 15, 12 Oct.
clarus Mockford, eight species have forewing M dichotomously branched, resulting in four M veins, four species have M with five branches, and one species is brachypterous
, with forewing venation not well defined; in all, V2+3 has a distinct anterior heel, and V1 is missing, although a few undescribed South American species have a short V1.
A brief revision of brachypterous
Phaneropterinae of the tropical Andes (Orthoptera, Tettigoniidae, Odonturini).
19) and all of our specimens have brachypterous
When placed with ten brachypterous
males sired twice as many offspring as did macropterous males.
This incessant calling song, a series of steadily repeated short clicks with a sharp peak at 20 kHz, easily reveals the presence of this short-legged and brachypterous
katydid - it lives in bamboo thickets within cloud forest, where individuals are very difficult to find.
All described members of Physoderinae are macropterous, brachypterous
specimens probably representing an undescribed species of Physoderes have been deposited in some collections (W.S.
DIAGNOSIS: Recognized by the combination of a contrasting yellow fascia on the anterior portion of the hemelytron or overall brown coloration, the presence of simple, reclining setae mixed with stout, thick, brown setae on the head, body and hemelytron; the small, slender endosoma without spines or elaborations, and the hemelytron in the brachypterous
female with a greatly reduced membrane, rounded apically, and just reaching the apex of the abdomen.
Although Pissonotus quadripustulatus is brachypterous
(see Methods: Study system, below), individuals can still hop and crawl between stems quite easily, allowing for rapid redistribution of insects in response to changes in host-plant quality.