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New Invasive Insects Associated with Oak Forests in Lebanon

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New Invasive Insects Associated with Oak Forests in Lebanon بحوث )حصر : حشرات ( (Research Paper (Survey: Insects New Invasive Insects Associated with Oak Forests in Lebanon Zinette Moussa1, Elia Choueiri2 and Abdallah Hanna3 (1) Entomology Laboratory, Department of Plant Protection, Lebanese Agricultural Research Institute, Fanar, Lebanon, Email: [email protected]; (2) Department of Plant Protection, Lebanese Agricultural Research Institute (LARI), Tal Amara, Lebanon; (3) Skaff Estate, Ammiq, Bekaa. Abstract Moussa, Z., E. Choueiri and A. Hanna. 2021. New Invasive Insects Associated with Oak Forests in Lebanon. Arab Journal of Plant Protection, 39(2): 164-172. Oak forests (Fagaceae) are native in Lebanon and occupy the largest areas of approximately 40,000 ha. The most common species are Quercus calliprinos, Q. infectoria, Q. cerris var. pseudo cerris and Q. brantii. Due to climate change and human activities, oak forests have become more vulnerable to native and exotic invasive pests. A total of 26 insect species associated with oak trees were recently identified in Lebanon. The most dangerous insect pest is the gypsy moth Lymantria dispar (Lepidoptera), on Q. calliprinos and Q. Cerris. The oak leafminer Phyllonorycter libanotica (Lepidoptera) and the Eriophidae (Accari) are the most species recorded on Q. infectoria and Q. calliprinos followed by the giant mealybug Ceroputo pilosellae (Hemiptera) on Q. infectoria and Q. calliprinos and the oak moth Thaumetopoea sp. (Lepidoptera) on Q. calliprinos and Q. Cerris. Eight new species were recorded for the first time in Lebanon on oak and are listed in this paper. Five species of Cinipidae (Hymenoptera): Andricus caputmedusae, A. cecconi, A. sternlichti, Plagiotrochus quercusilicis and Neuroterus quercusbaccarum, one species of Scolytidae, Xylosandrus compactus (Coleoptera), one species of Kermesidae Kermes echinatus (Hemiptera) and one species of Diaspididae, Koroneaspis aegilopos (Hemiptera). Keywords: Lebanon, oak, forest decline, invasive species, outbreak Introduction1 1) The Calliprine oak, Quercus calliprinos Webb, is the most common species growing between 500 and 1500 m, Lebanon is located at the eastern edge of the Mediterranean usually associated with Pinus pinea and P. Brutia below covering an area of 10,452 km2. The country climate is 1000 m and with Q. infectoria between 1000 to 1500 m. typically Mediterranean characterized by humid to sub- 2) The Aleppo oak, Q. infectoria Olivier, is the second humid in winter and semi-arid in summer with major dominant species standing between 200 and 1700 m and precipitation falling between December and March with it is found accompanying Q. calliprinos and Pinus brutia. snow in mountains. Forests are very particular in their 3) The hairy/iron oak Quercus cerris var. pseudo cerris L. diversity across the country. According to the Ministry of comes in the third place. It constitutes the most important Environment (MoE) and the United Nations Environmental pure stand at 1600 meters of altitude in the northern part Programme MoE/UNEP (2015), the Lebanese forests of the Mount Lebanon in Qamou’a or Karm chbat forest constitute 13.4% of the national territory. The highest associated with Quercus infectoria and Abies cilicica in concentrations are located in Mount Lebanon (37%) and mixed coniferous-broadleaved forest. North Lebanon (30%), followed by South Lebanon (9%) and 4) The Brant’s oak Quercus brantii Lindl. is found in the Nabatieh (6%) (FAO, 2010). Oak (Quercus spp) constitutes southern part of Mount Lebanon and Mount Hermon the major abundant forests with 52.42%, followed by pine between 1400 and 1800 m above sea level. (Pinus spp) (14.91%) and Juniper (8.74%), while fir, cedar and cypress forests are much less abundant and are Other native minor species found are: The Lebanon oak distributed in patches occupying 1.76%, 0.83% and 0.155, Q. libani G. Olivier, the Cedar oak Q. cedrorum Ktschy, the respectively (FAO, 2005; MoE, 2012). Tabor oak Q. ithaburensis ungeri Decne., the Pubescent oak Oak forests (Fagaceae) are native in Lebanon and Q. pubescens Willd and the Kotschy oak Q. kotschyana O. occupy approximately 40,000 ha. They are found at altitudes Schwarz (MoA/FAO 2005). between 500 and 1800 meters (AFDC, 2007; MoE, 2012) In Lebanon, some oak forests are maintained as natural mainly in the western slopes of the Mount Lebanon chain. reserves in Arz el Shouf Natural Reserve, Horsh Ehden On the eastern slopes of the chain, they extend Natural Reserve, Bentael Natural Reserve, Aammiq and discontinuously on low altitudes between Yammouneh and Jabal Moussa (MoA/FAO, 2005). Outside of those natural Hermel and on the slopes of Jabal Barouk-Niha. Only few reserves, oak forests like the other forests in Lebanon, are oak stands persist on the western slopes of the Anti-Lebanon subject to various pressures making trees more vulnerable to chain, mainly at Baalbeck, Rachaya and Hasbaya districts pest and diseases as well as to invasive species causing and in the south at Jabal Amel (METAP, 1995). According decline of the forests and losses in natural resources. Insects to MoA/FAO (2005) and Stephan et al. (2016), four endemic associated with oak forests have been studied for a long time species of Quercus are dominants in Lebanon: in Lebanon and they are mostly foliage feeders and https://doi.org/10.22268/AJPP-039.2.164172 الجمعية العربية لوقاية النبات Arab Society for Plant Protection 2021 © 164 مجلة وقاية النبات العربية، مجلد 39، عدد 2 )2021 ( woodborers belonging to the orders Lepidoptera and Results Coleoptera. The most common defoliating species are: Lymantria dispar (Linnaeus) (Demolin & Nemer, 1999; A total of 26 insect species belonging to 15 families were Talhouk, 1950), Eriogaster phillipsi Bart. (Talhouk, 1969), identified on branches and leaves of four native oak tree Thaumetopea sp. (Demolin & Nemer (1999) and species in Lebanon (Table 1), and they are as follows: Cynipidae Phyllonorycter libanotica (Deschka) (Deschka, 1972). (7); Diaspididae (6); Bupristidae (1); Eriophyidae (1); Németh et al. (2019) reported height species of woodborers Gracillariidae (1); Coccidea (1); Thaumetopoeidae (1); in the family of Cerambycidae on oak trees in Lebanon: Scolytidae (1); Kermesidae (1); Erebidae (1); Scarabidae (1); Phymatodes testaceus (Linnaeus), Phymatodes lividus Noctuidae (1); Tortricidae (1); Cossidae (1), Aphididae (1). (Rossi), Phymatodes rufipes syriacus (Pic), Ropalopus Specimens belonging to the family Tortricidae are larvae and ledereri wittmeri Demelt, Chlorophorus yachovi Sama, are still being reared in the Entomology Laboratory for the Hesperophanes sericeus (Fabricius), Purpuricenus purpose of identification. Among the insects identified in this dalmatinus Sturm and Niphona picticornis Mulsant. Ghahari study, eight species represent a new record for Lebanon. The et al. (2015) reported six buprestid beetles (Buprestidae) on following is a summary of the information gathered for the oak in Lebanon: Agrilus cuprescens chrysoderes Abeille de identified mites and insects: Perrin, A. derasofasciatus Lacordaire, Acmaeodera flavolineata Laporte & Gory, Anthaxia kiesenwetteri Acari, Eriophyidae: The Eriophydae mite is very common Marseul, Coraebus fasciatus (Villers) and Melanophila on oak especially on Q. calliprinos (Figure 1- A & B). It was cuspidata (Klug). Gall wasps (Cynipidae) are considered recorded from low to high level of infestation in: Bentael IV minor pests on quercus. Two species are native to Lebanon: 2013; Hasbaya XI 2016; Baalbek III 2018; Baalbek IV 2018; Cynips quercus (Fourcroy) and Andricus coriarius (Hartig) Baalbek IV 2019; Rachaya IV 2019; Kfifan V 2019; Fanar (Challis et al., 2007; Shachar et al., 2018) and three species III 2020; Abrine IV 2020. are alien: Andricus moreae (Graeffe), Aphelonyx persica Melika, Stone, Sadeghi & Pujade-Villar. and Chilaspis israeli Sternlicht (Katılmış & Kıyak, 2009; Shachar et al., 2018). The aim of this paper is to present a list of insect pests associated with oak trees in Lebanon and their geographic distribution with description of new species. Materials and Methods Field Survey and Insects Collection This study presents an analysis of data on insects associated Figure 1. Eriophidae mites on leaves: (A) Galls on upper side; with oak trees collected by the Lebanese Agricultural (B) Depression with rusty erineum at lower side. Research Institute (LARI) over a period of 10 years. Samples of branches and twigs of oaks were collected by the Entomology Laboratory (LARI) at Fanar in collaboration Lepidoptera, Erebidae: The gypsy moth Lymantria dispar with the Department of Plant Protection (LARI) in Tal (Linnaeus) is one of the most dangerous and destructive pest Amara. Other samples were received from citizens and on broadleaved trees in Lebanon. An outbreak occurred in municipalities across the country. Gall, leafminer, and wood Ammiq and Ain Zhalta VI 2019 causing a complete borer insects at immature stages were reared in the defoliation of Q. calliprinos, Q. infectoria and Q. brantii in Entomology Laboratory till adult's emergence. After the area (Figure 2- A). Both regions are connected together identification, insect's specimens and damaged host parts and are part of the Shouf Biosphere Reserve. were documented. Collected data includes pest name, host tree species, the date and the location of infestation. Lepidoptera, Thaumetopoeidae: The oak moth Thaumetopea sp. is another dangerous and destructive pest Weather Data Analysis on broadleaved trees in Lebanon (Figure 2- B). The pest was Weather data was collected from
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