Abstract
The life history of the stink bug Mecideamajor Sailer was studied in the southern half of New Mexico primarily from January 2005 through December 2007, and the nymphal instars were described. This species was active throughout the year as adults and nymphs, including the winter months. It occurred on various species of grasses during this time but primarily on Lehmann lovegrass, Eragrostislehmanniana Nees; grama grasses, Bouteloua spp.; and tobosagrass, Pleuraphismutica Buckley. The times of occurrence and abundance of the eggs, nymphs, and adults suggest this species is bivoltine with the possibility of a third generation. Instars can be distinguished by several morphological features including body size and presence and relative development of wing pads.
Highlights
The stink bug genus Mecidea Dallas (Pentatomidae: Pentatominae: Mecideini), which apparently is associated with xeric and semixeric environments, occurs within the subtropical and adjacent temperate regions of the world (Sailer 1952)
Mecidea major ranges from Minnesota (Koch et al 2014), southern Illinois (McPherson and Vogt 1981), and Missouri west to Arizona (Sailer 1952), and south to Mexico (Thomas 2000)
Little is known about its biology, including its nymphal stages. It has been reared in the laboratory (Bundy et al 2005) and the egg described (Bundy and McPherson 2005)
Summary
The stink bug genus Mecidea Dallas (Pentatomidae: Pentatominae: Mecideini), which apparently is associated with xeric and semixeric environments, occurs within the subtropical and adjacent temperate regions of the world (Sailer 1952). Eggs, and all instars were collected in October and November but only adults, fourths, and fifths in December. It is more likely that adults, fourth, and fifth instars, which were collected in December, overwintered, whereas eggs and first–third instars began development in January.
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