Range extension of Malabar Tree Nymph Idea malabarica (Moore) (Lepidoptera: Nymphalidae) to northern Western Ghats of Maharashtra and a review of distribution records

 

Manoj Jadhav 1 & R.M. Sharma 2

 

Zoological Survey of India, Western Regional Centre Pune, Maharashtra 411044, India

1 jadhav.manoj83@gmail.com (corresponding author), 2 rmsharma53@yahoo.in

 

 

 

doi: http://dx.doi.org/10.11609/JoTT.o3267.949 | ZooBank: urn:lsid:zoobank.org:pub:995D8DE3-C460-4CAE-8534-E459B9D7FF02

 

Editor: Anonymity requested.           Date of publication: 26 January 2013 (online & print)

 

Manuscript details: Ms # o3267 | Received 25 July 2012 | Final received 15 October 2012 | Finally accepted 31 December 2012

 

Citation: Jadhav, M. & R.M. Sharma (2013). Range extension of Malabar Tree Nymph Idea malabarica (Moore) (Lepidoptera: Nymphalidae) to northern Western Ghats of Maharashtra and a review of distribution records. Journal of Threatened Taxa 5(1): 3556–3558; doi:10.11609/JoTT.o3267.949

 

Copyright: © Jadhav & Sharma 2013. Creative Commons Attribution 3.0 Unported License. JoTT allows unrestricted use of this article in any medium, reproduction and distribution by providing adequate credit to the authors and the source of publication.

 

Funding: In-house study programme.

 

Competing Interest: None.

 

Acknowledgements: The authors express their sincere gratitude to Dr. K. Venkataraman, Director, Zoological Survey of India, Kolkata for constant support and providing facilities. We also wish to thank Dr. Muhamed Jafer Palot, Assistant Zoologist, Zoological Survey of India, Calicut for his critical reading, suggestions in improvement of first draft and sparing valuable literature. Our thanks are also due to Dr. Neelesh Dahanukar, Indian Institute of Science, Education and Research, Pune for valuable help rendered in preparing map and Dr. S.S. Jadhav, Senior Zoological Assistant, Zoological Survey of India, Pune for inputs to enhance the quality of the paper.

 

 

The publication of this article is supported by the Critical Ecosystem Partnership Fund (CEPF), a joint initiative of lÕAgence Fran¨aise de Dˇveloppement, Conservation International, the European Commission, the Global Environment Facility, the Government of Japan, the MacArthur Foundation and the World Bank.

 

 

 

For figures, images, tables -- click here

 

 

While surveying insects on the outskirts of Bhimashankar Wildlife Sanctuary near Dimbhe Dam (1905Õ23ÓN & 73044′31ÓE at 662m) on 14 April 2012, our attention was caught by a group of three butterflies hovering over Lantana flowers near a stream with their slow and floating flight.  One of them was collected using an insect net and preserved (Image 1).  It was identified as a Malabar Tree Nymph Idea malabarica (Moore) on the basis of literature, especially Evans (1932), Wynter-Blyth (1957), Kunte (2000) and Kehimkar (2008).

 

Family: Nymphalidae

Subfamily: Danainae

Idea malabarica (Moore) 1877

Material examined: 1 ex, 14.iv.2012, near bridge on road to Dimbhe Dam, Pune District, Maharashtra, coll. Manoj Jadhav (Z.S.I. W.R.C., Pune, Registration No. Ent.02/1110).

Wing span: 112 mm. 

Idea malabarica (Moore) is reported as confined to wet evergreen forests with heavy rainfall areas south of Goa to southern Western Ghats up to Kerala and is endemic to this area (Evans 1932; Wynter-Blyth 1957; Larsen, 1987; Kunte 2000; Rangnekar 2007; Kehimkar 2008; Sharma & Borkar 2008).  Largest among milkweed butterflies, unmistakable due to its slowest flight among Indian butterflies, prefers wetter forests between 300–1200 m in the hills (Wynter-Blyth 1957).

Barring a single record of Ghosh et al. (1990) from Raigarh District as a new report for Maharashtra State, no further records of Idea malabarica from any of the districts of Maharashtra, northern Western Ghats is available (Gaonkar 1996; Kunte 1997 & 2001; Rane & Ranade 2004; Padhye et al. 2006; Gaikwad et al. 2009; Sharma 2009; Aland et al. 2011).  Padhye et al. (2012) presented latitudinal distribution of I. malbarica in Western Ghats.  But itÕs occurrence in the range of 18– 20 0N latitude is not yet reported.

Butterflies have specific habitat requirements depending upon their feeding and reproduction needs (larval host plants).  Earlier, Idea malabarica was considered a monophagous species feeding on Aganosoma cymosa (Apocynaceae) but Susanth (2005) reported Parsonsia spiralis (Apocynaceae) as its new larval host plant.  Nevertheless, it is not yet known out of two known host plants, which one is being used by the butterfly to survive in this area.  However, it can be said with certainty that the sacred groves in the vicinity must include both host plants.

The record of Idea malabarica from Dimbhe, Pune District of northern Western Ghats, Maharashtra extends its known range significantly northwards from Raigarh (about 275km) and southern Western Ghats or Goa (about 530km).  A distribution map (Image 2, Table 1) for Idea malabarica in Western Ghats is provided based on the published records (Ghosh & Chaudhary 1986; Ghosh et al. 1990; Radhakrishnan 2000; Sreekumar & Balakrishnan 2001; Arun 2003; Arun & Azeez 2003; Palot & Abdurahman 2003; Borkar & Komarpant 2004; Ali et al. 2004; Dunston & Raj 2005; Radhakrishnan & Palot 2007; Rangnekar 2007; Kunte 2008; Alagumurugan et al. 2011).

The occurrence of Malabar Tree Nymph, an endemic butterfly of southern Western Ghats in the new geographical area is interesting to study: the factors which made the species extend its range to a considerable degree; to explore whether the butterfly is using other species of Apocynaceae as food plant in the study area and finding new areas conducive for its survival.

 

 

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