@article {143,
	title = {Discovery of potent, unsuspected sampling disparities for Malaise and M{\"o}ricke traps, as shown for Neotropical Cryptini (Hymenoptera, Ichneumonidae)},
	journal = {Journal of Insect Conservation},
	volume = {14},
	year = {2009},
	pages = {199-206},
	abstract = {Malaise and M{\"o}ricke traps, universally used mostly to sample wasps and flies, are compared for the first time at genus level, focusing on Cryptini, one of the most diverse parasitoid taxa. Conclusions are supported by 10,706 man-hours of activities, 5,569 specimens from 20 Atlantic Forest and Amazon Forest localities, 4.81 Malaise trap-years and 89.09 M{\"o}ricke trap-years. Substantial taxonomic and sexual biases were detected and quantified for Cryptini and for each of its studied genera. M{\"o}ricke captured a proportion of Cryptini to other Ichenumonidae almost four times greater than Malaise. Most genera were captured mostly or exclusively by one of the traps only. Generally, Malaise collected 2.4 times more males than females, and 20\% more species for males than females; M{\"o}ricke yielded 2.4 times more females, and 2{\textendash}4 times more species for females than males. The study scrutinizes and reaches beyond an allegedly known, but widely neglected problem. Data interpretation strongly suggests the necessity of sampling with both traps at once, under the risk that biodiversity investigations might otherwise continue to generate grossly biased results. Trap equivalence is discussed and quantified},
	keywords = {behaviour {\'a} gender {\'a}, flight interception trap, sex-ratio {\'a}, yellow pan trap {\'a}},
	author = {Aguiar, A.P. and Santos, Bernardo F.}
}
