1. Agostinho AA, Thomaz SM, Minte-Vera CV, Winemiller KO (2000) Biodiversity in the high Paraná River floodplain; Biodiversity in Wetlands. Assessment, Function and Conservation. Vol-1 Leiden. Backhuys Publishers 1, 89–118
2. Alba-Tercedor JC, Zamora-Munoz A, Sanchez-Ortega Guisasola I (1991) Mayflies and stone flies from the RioMonachil (Sierra, Nevada Spain) (Ephemeroptera and Plecoptera). In: Alba-Tercedor J, Sanchez Ortega A (eds) Overview and strategies of Ephemeroptera and Plecoptera. Sandhill crane press Inc, Gainesville, pp 529–538
3. APHA (2005) Standard methods for the examination of water and wastewater, 19th Edn. Published by American Public Health association, 1015, fifteen street NW Washington, D.C. 20 R.C. 0015
4. Arimoro FO, Ikomi RB (2008) Ecological integrity of upper Warri river, Niger delta using aquatic insects as bioindicators. Ecol Indic 395:1–7
5. Bal A, Basu RC (1994a) Insecta: Hemiptera: Belostomatidae, Nepidae, Notonectidae and Pleidae. State fauna series 5: Fauna of West Bengal. Part 5, Zoological Survey of India, Calcutta, pp 535–558