This study aimed to examine the anti-termite potential of four Saharan plant extracts, namely, the apple of Sodom or rubber bush, Calotropis procera; pergularia, Pergularia tomentosa; jimsonweed, Datura stramonium, and Egyptian henbane, Hyoscyamus muticus from Bechar (southwest of Algeria) on workers of the harvester termite, Anacanthotermes ochraceus (Isoptera: Hodotermitidae). A direct contact application test was conducted with five fractions from aqueous extracts of each part of plant species (leaves, stems) using hexane, dichloromethane, ethyl acetate, butanol, and exhausted fraction. A repellent test was realized with aqueous extracts (10%) of plant species leaves and stems. According to the direct contact application test, all tested plants fractions showed termiticidal activities with different degrees. Butanolic fractions presented the best effects from leaves of C. procera and P. tomentosa with median lethal time (LT50) = 231.03 and 244.96 min, respectively. In the second test, wood samples were exposed to termite attack for four weeks, and the weight loss percentage was determined. The weight loss ranged from 0.034 to 16.90% at concentrations of 10% of plant extracts. The best repellent effect was obtained from leaves of C. procera (weight loss = 0.034%) and leaves of D. stramonium (weight loss = 1.29%). It was concluded that some Saharan plants are a good source of anti-termite compounds, especially C. procera.

• Abbasipour, H., Mahmoudvand, M., Rastegar, F., & Hosseinpour, M. H. (2011a). Bioactivities of jimsonweed extract, Datura stramonium L. (Solanaceae), against Tribolium castaneum (Coleoptera: Tenebrionidae). Turkish Journal of Agriculture and Forestry, 35(6), 623-629. http://doi.org/10.3906/tar-1004-874

• Abbasipour, H., Rastegar, F., Mahmoudvand, M., & Hosseinpour, M. H. (2011b). Insecticidal activity of extract from Datura stramonium (F.) (Solanaceae) against Callosobruchus maculatus. Integrated Protection of Stored Products, 69, 251-256.

• Abdel-Aziz, M. D., Mamdouh, A., Mahmoud, E. E., & Mohamed, E. M. (2009). Acaricidal activity and chemical constituents of Hyoscyamus muticus against Teteranychus urticae Koch. Revista Latinoamericana de Qu mica, 37(1), 45-55.

• Abed Elmaksood, W. M., Ebad, F. A., & Bosila, H. A. (2016). In vitro p­­­­ropagation of the endangered medicinal plant Hyoscyamus muticus L. (Egyptian henbane). Journal of Applied Environmental and Biological Sciences, 6(4), 25-34.

• Acheuk, F., & Doumandji-Mitiche, B. (2013). Insecticidal activity of alkaloids extract of Pergularia tomentosa (Asclepiadaceae) against fifth instar larvae of Locusta migratoria cinerascens (Fabricius 1781) (Orthoptera: Acrididae). International Journal of Science and Advance Technology, 3(6), 8-13.

• Aderonke, S. A., Opeyemi, N. A., Oladipupo, A. L., Isiaka, A. O., & Abdulateef, A. G. (2017). Chemical constituents and anti-inflammatory activity of essential oils of Datura stramonium L. Journal of Medicinal Plants Studies, 5(1), 21-25.

• Al-Mekhlafi, N. A., & Masoud, A. (2017). Phytochemical and pharmacological activities of Pergularia tomentosa L. - A review. Indo American Journal of Pharmaceutical Sciences, 4(11), 4558-4565. http://doi.org/10.5281/zenodo.1069010

• Al-Snafi, A. E. (2017). Medical importance of Datura fastuosa (syn: Datura metel) and Datura stramonium - A review. IOSR Journal of Pharmacy, 7(2), 43-58. http://doi.org/10.9790/3013-0702014358

• Asiry, K. A, Hassan, S. S. M., Ibrahim, N. A., Al-Khuraiji, I. A., Kehial, M. A., Al-Anazi, N. A., Al-nasser, A. S., & Al-Shehri, A. Z. (2017). Larvicidal efficacy of ethanolic leaf extracts of four selected local plants from hail region, northern Saudi Arabia, against the dengue fever vector, Aedes aegypti (L.) under laboratory conditions. International Journal of Mosquito Research, 81(43), 81-87.

• Bourmita, Y., Cheriti, A., Ould El Hadj, M. D., Mahmoudi, K., & Belboukhari, N. (2013). Anti-termitic activity of aqueous extracts from Saharan toxic plants against Anacanthotermes ochraceus. Journal of Entomology, 10(4), 207-213. http://doi.org/10.3923/je.2013.207.213

• Cheriti, A. (2002). Plantes médicinales du Sud-Ouest Algérien criblage phytochimique et evaluation biologique [Medicinal plants of South West Algeria phytochemical screening and biological evaluation]. Center of Scientific and Technical Research on Arid Regions.

• Debnath, T., & Chakraverty, R. (2017). Newer insights into the pharmacological activities of Datura stramonium. Linn.: A review. Indo American Journal of Pharmaceutical Research, 7(9), 441-444. http://doi.org/10.5281/zenodo.1036407

• Dipendra, S., Baby, S., & Dutta, B. K. (2012). Potential of some plant extracts to control termite pest of tea (Camellia sinensis L. (O) Kuntze) plantations of Barak Valley, Assam. India. International Journal of Tea Science, 8(4), 3-9.

• Dodji, K. B., Seth, N. W., Déla, M. A., Koffivi, K. G., & Adolé, G. I. (2016). Termiticial activities of few plant extracts against Macrotermes subhyalinus Smeathman and Trinervitermes geminates Wasmann (Isoptera: Termitidae) survival. African Journal of Agricultural Research, 11(28), 2475 -2480. https://doi.org/10.5897/AJAR2016.11146

• Elimam, A. M., Elmalik, K. H., & Ali, F. S. (2009). Efficacy of leaves extract of Calotropis procera Ait. (Asclepiadaceae) in controlling Anopheles arabiensis and Culex quinquefasciatus mosquitoes. Saudi Journal of Biological Sciences, 16(2), 95-100. http://doi.org/10.1016/j.sjbs.2009.10.007

• Elsharkawy, E. R., Ed-dra, A., Abdallah, E. M., & Ali, A. M. H. (2018). Antioxidant, antimicrobial and antifeedant activity of phenolic compounds accumulated in Hyoscyamus muticus L. African Journal of Biotechnology, 17(10), 311-321. http://doi.org/10.5897/AJB2017.16316

• Finney, D. J. (1971). Probit analysis (3rd ed.). Cambridge University Press.

• Funke, G. A., Olayiwola, O. A., Olajide, A. O., & Tunde, J. A. (2015). Potentials of Azadirachta indica seed oil as bio-preservative against termite attack on wood. Asian Journal of Plant Science and Research, 5(12), 1-5.

• Green, P. W. C., Veitch, N. C., Stevenson, P. C., & Simmonds, M. S. J. (2011). Cardenolides from Gomphocarpus sinaicus and Pergularia tomentosa tomentosa (Apocynaceae: Asclepiadoideae) deter the feeding of Spodoptera littoralis. Arthropod Plant Interact, 5(3), 219-225. http://doi.org/10.1007/s11829-011-9131-x

• Hridayesh, A., Babu Ram, S., & Kavindra, S. (2016). Insecticidal activity of Calotropis procera leaves against mustard aphid, Lipaphis erysimi (Kalt) and its natural predator Coccinella septempunctata (Linn). Research Journal of Chemical and Environmental Sciences, 4(5), 53-55.

• Jawalkar, N., Zambare, S., & Zanke, S. (2016). Insecticidal property of Datura stramonium L. seed extracts against Sitophilus oryzae L. (Coleoptera: Curculionidae) in stored wheat grains. Journal of Entomology and Zoology Studies, 4(6), 92-96.

• Kamble, K. J., & Thakor N. J. (2017). Biotermiticides to protect the soil health. International Journal of Environmental and Agriculture Research, 3(5), 73-79. http://doi.org/10.25125/agriculture-journal-IJOEAR-MAY-2017-9

• López-Naranjo, E. J., Alzate-Gaviria, L. M., Hernández-Zárate, G., J Reyes-Trujeque, J., & Cruz-Estrada, R. H. (2014). Termite resistance of wood–plastic composites treated with zinc borate and borax. Journal of Thermoplastic Composite Materials, 29(2), 281-293. https://doi.org/10.1177/0892705714563343

• Miladi, M., Abdellaoui, K., Regaieg, H., & Omri, G. (2018). Effects of latex from Pergularia tomentosa and the aggregation pheromone, phenylacetonitrile, on Locusta migratoria larvae. Tunisian Journal of Plant Protection, 13, 87-98.

• Mokeddem, A., Cheriti, A., Bourmita, Y., & Belboukhari, N. (2017). Effet insecticide des extraits des plantes Warionia saharae et Gymnocarpos decander sur les termites [Insecticidal effect of extracts of plants: Warionia saharae and Gymnocarpos decander against termintes]. PhytoChem and BioSub Journal, 11(3), 138-142. https://doi.org/10.163.pcbsj/2017.11.3.138

• Mueen, A. K. K., Rana, A. C., & Dixit, V. K. (2005). Calotropis species (Asclepiadaceae) - A comprehensive review. Pharmacognosy Magazine, I, 48-52.

• Nazeer, A., Zelle, H., Misbah, U. H., Saif, U.-R., Misbah, U., & Saeed, A. (2016). Effect of different plant extracts on termite species (Heterotermis indicola). Journal of Bioresource Management, 3(2), 9-16. https://doi.org/10.35691/JBM.6102.0049.

• Ranjith, M., Bajya, D. R., & Manoharan,T. (2015). Field study on repellent efficacy of Crotalaria burhia Buch.-Ham. ex Benth. and Anacardium occidentale L. against Odontotermes obesus (Rambur). Indian Journal of Natural Products and Resources, 6(4), 288-292.

• Rashmi, Singh, K. P., & Arya, S. (2011). Phytochemical profile and evaluation of insecticidal efficacy of Calotropis procera against defoliators. Journal of Medicinal Plants Research, 5(31), 6738-6743. http://doi.org/10.5897/JMPR11.774

• Sahay, N. S., Prajapati, C. J., Panara, K. A., Patel, J. D., & Singh, P. K. (2014). Anti-termite potential of plants selected from the SRISTI database of Grassroots Innovations. Journal of Biopesticides, 7, 164-169.

• Schneider-Orelli, O. (1947). Entomoligisches Praktikum-Eifurung in die land- um forstwirtschafliche insektenkunde [Entomoligisches internship in the agricultural and forestry insectology]. Sauerländer & Co.

• Sharief, M. T. M., & Eldoma, H. A. E. (2019). The effect of solvent and distilled water extraction of Calotropis spp. on housefly. Journal of Chemical Science and Engineering, 2(3), 122-125.

• Swathi, S., Murugananthan, G., Ghosh, S. K., & Pradeep, A. S. (2012). Larvicidal and repellent activities of ethanolic extract of Datura stramonium leaves against mosquitoes. International Journal of Pharmacognosy and Phytochemical Research, 4(1), 25-27.

• Tayoub, G., Sulaiman, H., & Alborzi, M. (2016). Quantitative identification of Atropine and Scopolamine in wild datura (Datura metel) using HPLC. Journal of Natural Products, 9, 21-28.

• Vinothkumar, B., Shanmugapriya, R., Sangamithra, S., & Kuttalam, S. (2018). Efficacy of clothianidin 50 WDG against termites in sugarcane. Journal of Sugarcane Research, 8(1), 66 -75.

• Zoubiri, S., & Baaliouamer, A. (2014). Potentiality of plants as source of insecticide principles. Journal of Saudi Chemical Society, 18(6), 925-938. https://doi.org/10.1016/j.jscs.2011.11.015