The buildings of Nasir’s college of Agriculture have been surveyed to check damages caused by termites. Termites cause lots of damage to college buildings. The minimum costs to repair such damages were estimated to be about YR 914100 as of 1995. Termite species responsible for these damages were identified as Microcerotermes diversus and Heterotermes aethiopicus .There is a high correlation between the number of soldiers and workers found in termite tunnels in one hand and the length of the tunnel on the other. The coefficient of correlation (r=0.95) was found to be significant. The college farm and its yards were visited several times where field crops, vegetables as well as fruit trees, ornamental plants, weeds and shade trees were checked several times for termite damage. The most vegetables damaged by termites were tomatoes and green pepper. Pomegranate trees were the most affected fruit trees followed by citrus and mango. The cidr trees (Z. spinachristi), damas (Conocarpus lancifolius), daiman (Inga dulcis) were the most attacked shade trees. Gahnameia (Bougainvillea glabra) was the most attacked ornamental plant and aldhafra (Tephrosia appolinea) was the most attacked weed at the farm of the college and its yards. In conclusion, termites may cause a lot of damage to buildings, but they were not serious pests for field crops compared with what is happening in Tihama region. The most important termites species responsible for this damage were identified as Microcerotermes diversus and Heterotermes eathiopicus. Whilst the important species in Tihama is Microtermes najdensis . Therefore, more emphasis should be put on internal quarantine measures and should be rigorously endorsed in order to stop the spread of M. najdensis elsewhere out side Tihama. Biological control agents such as the predatory ants should be encouraged.

Key Words :Buildings, Damages, Termites