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Earthworm, a ubiquitous (but neglected) macro-invertebrate, is found in terrestrial vicinity of Pakistan. Moreover, the occurrence of earthworms is often diverse with fluctuating quantity depending upon abiotic factors and land usage patterns. The aim of this study was to summarize all the reported information related to earthworm diversity in different areas of Pakistan. Almost all the data published from year 2001 to 2021 were collected. Following data organization, total 42 earthworm's species including five families (Acanthodrilidae, Lumbricidae, Moniligastridae, Octochaetidae and Megascolecidae) were reported from various researchers. Among five families, family Acanthodrilidae was found to have only one specie (Ramiella bishambari), Lumbricidae consist of 10 species (Apporactodea rosea, Allolobophora trapezoids, Allolobophora chloroticaa, Aporrectodea longa, A. caliginosa, Bimastus parvus, Eisenia fetida, Helodrilus foetidus, Lumbricus terrestris and L. rubillus), Moniligastridae has two species (Drawida nepalensis and D. pellucida) while Octochaetidae possess only one specie (Eutyphoeus incommodus). The most abundant and diverse family Megascolecidae consist of 28 earthworm species in all habitats of different regions of Pakistan. Among geographical areas, Faisalabad was found as the richest territory with most reported earthworm species (i.e. 28). The current study suggests further in depth research to explore the unidentified and/ missing species of earthworms in Pakistan.
Hussain et al. (Sat,) studied this question.