author(s)
PME Ubulom, GS Umoh, EJ Ekong and EO Ettebong

abstract
A survey on the occurrence of arthropods of medical importance in Okorombokho, Nigeria was carried out, from December 2016 to May 2017. Both aquatic and terrestrial habitats were surveyed. A scoop net was used for the collection of aquatic specimens, while a sweep net and various traps (pit fall, light and sticky traps) were used for terrestrial investigations. A total of 1094 arthropods were collected, of which 308 were of medical importance. These were Callinectes amnicola, ixodid ticks (12.01%) and some insect vectors. Insect vectors collected included Periplaneta americana (4.22%, Blattodea) and dipterans of the families Psychodidae (40.26%), Ceratopogonidae (22.10%), Muscidae (16.23%) and Culicidae (4.87%). Results obtained from t-test revealed that the seasonal variation in abundance of the medically important arthropods was significant. Shannon Wiener’s diversity index (H^′) revealed that the terrestrial habit was more diverse (3.22) than the aquatic habitat (1.32). It is therefore pertinent to draw up a program targeted at the control of these vectors.