Family Saturniidae (Insecta: Lepidoptera) of Sri Lanka: an Overview
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LEPCEY - The Journal of Tropical Asian Entomology 02 (1): 1 – 11 Published: 31 October 2013 ©HABITATS Conservation Initiative. ISSN 2012 - 8746 Review Article FAMILY SATURNIIDAE (INSECTA: LEPIDOPTERA) OF SRI LANKA: AN OVERVIEW S. Tharanga Aluthwattha Xishuangbanna Tropical Botanical Gardens, Chinese Academy of Sciences. Menglun, Mengla, Yunnan 666303, China. University of Chinese Academy of Sciences, Beijing 100049, China Abstract Since the work of Moore (1880-1887) and Hampson (1892-1896) nomenclature of Sri Lankan moth fauna has remained largely unchanged. Four valid species of family Saturniidae, Actias selene taprobanis, Attacus taprobanis, Antheraea cingalesa and Cricula ceylonicaare recorded. Former three species were confirmed by recent field records. Actias selene taprobanis and Attacus taprobanis are confined to Sri Lanka and wet biomes of southern India. Antheraea cingalesa and Cricula ceylonica are endemic to the island. Presence of other Saturniidae mentioned in literature requires further confirmation with field records. Key words: Endemic, Pest, Silk moths, Silk industry, Southern India, Wet zone Geotags: Colombo, Kandy, Yala, Anuradhapura [6.904614, 79.897213 | 7.302536, 80.616817 | 6.670064, 81.429806 | 8.314777, 80.441036] INTRODUCTION moth species in Sri Lanka are hampered by the The Saturniidae moths are remarkable unavailability of updated literature (Wijesekara among lepidopterous insects for their economic and Wijesinghe, 2003). This article reviews the importance as silk moths and ornamental value as available literature and brings the latest well as the biological diversity. After Moore’s nomenclature to the Saturniidae of Sri Lanka. (1882 - 1887) studies of Sri Lankan Lepidoptera, publications on moths experienced a sharp METHODS decline. Contemporary reports focus on species of Valid species, descriptions, field distributions and moths regarded as agricultural pests (Rajapakse life history records are based on published and Kumara, 2007; Wijesekara and Wijesinghe, literature, personal communications to, and 2003). records of author. The Lepidoptera card index of The Natural History Museum, London (Beccaloni Sri Lanka does not involve in any et al., (2003) was checked for correct ornamental trade, farming or collection of nomenclature. A list of Saturniidae of Sri Lanka Lepidoptera, except the limited sericulture based on the insect catalogue and specimens industry (Uragoda and Wijekoon, 1991; Datta et including the National Museum of Sri Lanka al., 2005), leaving the importance of moth fauna (Nandasena et al., (2010) were also examined. to food and agriculture (Wijesekara et al., 2003; Main references for nomenclature and valid Anandaraj and Devasahayam, 2004). Though species are Moore (1883), Jordan (1909), Peigler scientific nomenclature of moths has extensively (1989), Paukstadt and Paukstadt (1999), Beccaloni changed over the last century, local moth fauna et al., (2003) and Rougerie et al., (2009). All lists have not been updated. Current studies on unpublished records, including personal * E-mail: [email protected] Received: 22 May 2013 Accepted: 10 June 2013 Saturniidae of Sri Lanka communications, were confirmed by the author varieties of Antheraea pernyi used in the silk with specimens or identifiable photographs; other industry can survive without human caring and records were excluded. have been known to have some naturalized populations in India (Arunkumar et al., 2006; Liu, RESULTS AND DISCUSSION Y. et al., 2008; Ahmed, and Rajan, 2011). Tennent (1861) provides the earliest Therefore there is a possibility to have a record of Saturniidae moths in Sri Lanka. He naturalized population of Antheraea pernyi or mentioned three months: Moon moth, Atlas moth related taxa among Sri Lankan Tasar Silkmoth and Tusser Silk moth. Moore (1882) described the Antheraea cingalesa. On the other hand, same three with the names Actias selene Hubner, Antheraea pernyi as its common names imply, is a Attacus taprobanis Moore and Antheraea temperate moth which hosts on Oak (Fagaceae: cingalesa Moore. Hampson (1892-1896) Quercus spp.) (Liu et al., 2008; Ahmed and Rajan, mentioned these three species as Actias selene, 2011). Attacus atlas and Antheraea paphia. He further These Sri Lankan references to Attacus included Attacus ricini. Nandasena et al., (2010) ricini, Samia cynthia, and Samia ricini should be mentioned Antheraea assamensis, Antheraea the Eri silkworm, today known as Samia cynthia paphia (referring to Antheraea cingalesa), ricini, which is a domesticated silkworm originally Antheraea roylei, Samia cynthia, and Samia ricini from the wild progenitor Samia canningi Hutton, in an article about edible insects in Sri Lanka distributed in the sub Himalayan forests (Piegler based on museum specimens and catalogues. A and Naumann 2003). The nomenclature of such a recent attempt to list Sri Lankan Lepidoptera domesticated taxon is arguable and confusing, (Koçak and Kemal, 2012) which is not an updated while ‘ricini’ probably has a polyhybrid origin checklist and full of errors, lists Actias selene, (Nässig, 2008). However Piegler and Naumann Antheraea cingalesa, Attacus atlas (2003) clearly stated that genus Samia does not (misidentification of A. taproanis), Cricula extend its range towards southern India and Sri trifenestrata (misidentification of C. ceylonica), Lanka. If the Eri silkworm (‘ricini’) had been and Samia cynthia. An updated list of Saturniidae introduced for sericulture in Sri Lanka, there are in most of South Asian countries has been no records of commercial use nor is there compiled by Kitching et al., (2010) including their evidence of its naturalized population known to common names, however the list does not the author. Samia cynthia is native to China and mention the country vise distributions. Korea, while it has been introduced to Japan, Recent phylogenetic work demonstrates India, Australia, Africa and America (Piegler and the relationship between Indian Oak Tasar moth Naumann, 2003). Antheraea roylei and Chinese Oak Tasar moth or The Lepidoptera catalogue of BMNH also Temperate Tasar moth Antheraea pernyi contains Sri Lankan records for Antheraea (Arunkumar et al., 2006; Liu, Y. et al., 2008; assamensis (Beccaloni et al., 2003). Helfer (1837) Rougerie et al., 2009). Phylogenetic evidences first described A. assamensis as Saturnia (Arunkumar et al., 2006) suggest that Antheraea assamensis from Assam, India and did not roylei evolved after chromosomal rearrangement mention any distribution outside Assam. Today of Antheraea pernyi i.e. Antheraea pernyi is the Antheraea assamensis is known from India, ancestor. Therefore A. roylei is considered a Burma, and Sundaland (Holloway, 1987). subspecies, Antheraea pernyi roylei (Beccaloni et However Nässig (2002) doubt the Sundaland al., 2003). Unlike most other silkmoths, hybrid record of A. assamensis and suggest it should be 2 S.T. Aluthwattha Antheraea (Antheraeopsis) youngi saying that true wet biomes of Sri Lanka and the western coast of A. (Ao.) assamensis is restricted to the Himalayan India, well separated from the range of Attacus area perhaps maybe including the mountains in atlas by the tropical semi-arid to arid biomes northern Indochina or South China. Recent between these regions (Peigler, 1989). According population genetic study of A.assamensis (Singh et to our observations (Figure 01) Attacus taprobanis al., 2012) also considered it is endemic to is common in wet-zones of Sri Lanka, while it is Northeast India and Indo-Burma stating the recorded in dry-zones, showing its historical range failure of rearing populations outside its natural in the island connecting to mainland India. hosts, Persea bombycina and Litsea Attacus taprobanis has been recorded as a pest of monopetala (family Lauraceae). Furthermore Cinnamon in Sri Lanka (Anandaraj and domesticated farm stock of A.assamensis crash Devasahayam, 2004). frequently and wild populations provide new Moore (1883) described Antheraea cultures (Singh et al., 2012). When considered cingalesa from Sri Lanka. Later, many authors against its natural distribution and host specificity, misidentified it as Antheraea mylitta or Antheraea it is hard to think Antheraea assamensis is native paphia (including Hampson 1892-1896; to Sri Lanka or has established introduced Nandasena et al. 2010). However, current populations survived. Antheraea assamensis has phylogentic studies keep Antheraea cingalesa as a been used for high quality silk production for valid species endemic to Sri Lanka (Beccaloni et centuries in India (Ciesla, 2002; Datta et al., 2005; al., 2003; Rougerie et al., 2009). Jordan (1909) in Singh et al., 2012) but there is no record of its his notes on genus Cricula, described Sri Lankan introduction or use in Sri Lanka. specimens as subspecies Cricula trifenestrata The Moon moth in Sri Lanka and ceylonica. This species is still referred to as Cricula southern India was described as a new sub species trifenestrata, especially in agricultural pest related Actias selene taprobanis by Paukstadt and publications where the species is identified as pest Paukstadt (1999) because of the differences in the of Cinnamon (Cinnamomum zeylanicum Blume male genitalia. This sub species is clearly restricted Syn. Cinnamomum verum Presl.) in Sri Lanka to the tropical wet biomes of the island of Sri (e.g. Yadav and Kumar, 2003; Anandaraj and Lanka and southern Indian subcontinent and Devasahayam, 2004). Currently, however, geographically isolated from other nominotypical Rougerie et al.,