Dr. Steinmann Henrik szerk.: Folia Entomologica Hungarica 23/1-12. (Budapest, 1970)

Soil trap collections Por this purpose, jars are dipped into the soil up to their mouth. To avoid flooding by the frequent heavy rains

, they should never be placed in depressions, and should be shaded by stones, big leaves or small aluminium sheets.It is advisable

,especially in the rainy season, to build a small flat hill of about 1 or 2 in high in the centre around the mouth of the jar. If the jars are intended to trap insects moving on the ground, they have to be kept working for a longer period, and filled with preserving fluid. One of the recommended fluids is ethyleneglycol

, but if this is not obtainable, a concentrated solution of salt in water could be used with moderately good results. Similar traps can be used with bait. Dung of different animals, faeces, meat, bones, fruits or mushrooms can be used with good effect. It has to be noted that the fauna on cadavers appeared to be extremely poor in the forest zone of Ghana. The baited traps must be emptied daily

. Light collections This method has been applied regularly: collecting on a sheet hung behind the illuminant, or by a light trap. Por the light source, where electricity was obtainable, normal electric bulbs of 100 W, opallic phototubes (neon) of 60 W and later special bulbs (mixed quartz light 160 W, ultraviolet light 125 W, mercury vapour light 125 W) have been used. Where no electricity was obtainable, air pressure kerosene lamp (Optimus) was used. Por trapping, a wooden or metal funnel was fixed beneath the illuminant. The jar was filled with wooden wool, with chloroform as narcotizer. To avoid the trapping of large moths (they spoil the material also by losing scales),a metal mesh of about 6 mm gauge was applied to the top of the funnel. The selection of the sometimes enormous material is extremely difficult, mainly because of the constant adaptation of the