The population distribution of fingerprint minutiae is necessary to improve efficiency of fingerprints in identifying individuals in a population-specific manner. The objective of the study was to determine the distribution of different types of minutiae fingerprint feature in two Nigerian ethnic populations. Fingerprints from forty-four (44) Igbo individuals and forty-four (44) Yoruba individuals, both of Nigeria were collected using a manual impression method that uses ink pad and paper. Of all the minutiae types considered, bifurcations and convergences accounted for 54.85% of the study's total minutiae counts (TMC). This study shows that the Igbo ethnic group consistently have higher count of all minutiae types and higher total minutiae counts for both hands statistically significant at P<0.001. We found association between gender and minutiae distribution in some minutiae types including fragment/point or dot (FP), overlap (OL) and break (BR). This work revealed important variations among individuals from the two ethnic groups on the distribution and variability of minutiae in Nigeria populations.

Grasshoppers are a group of herbivorous insects in the order Orthoptera and suborder Caelifera (Ragge, 1965; Meinzingen, 1993). Globally, there are about 11,000 known species of grasshoppers distributed in six families and several genera. The genus Acrida is one of the most diverse genera in the order (Gupta and Chandra, 2018). Acrida turrita (Family Acrididae or Acridomorphoidea) is a short-horned grasshopper found in many parts of the world, often regarded as giant green slant face grasshopper. The males have a diploid chromosome number of 23, with an X0 constitution (Brown, 1972). Several cytogenetic studies have shown that 23 uniform and conserved acrocentric chromosomes made up of 22 autosomes and an X chromosome are found in the grasshoppers of the family Acrididae and this conservation has been reported