Habitat status of Musa paramjitiana L.J. Singh (Musaceae) : a critically endangered, endemic species in Andaman &amp; Nicobar Islands, India

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Luthrodes pandava Horsfield (Lepidoptera: Lycaenidae) has been reported as a pest of cycad plants in the Andaman and Nicobar Islands, India for the first time. Its impact on host species is assessed. Compared to introduced species, endemic cycads appear to be most susceptible to damage by its larvae, feeding on the plant and affecting growth. Larvae damage all above‐ground plant parts. C. dharmrajii L. J. Singh and C. pschannae R.C. Srivast. & L. J. Singh, endemic to the Andaman and Nicobar Islands, are recorded here for the first time as new host plants.

Section: Introductionmentioning

confidence: 99%

New hosts for the cycad blue butterfly, Luthrodes pandava, Horsfield (Lepidoptera: Lycaenidae) in an island ecosystem

Purti¹,

Singh

Pandey³

2022

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“…Diversified preference and specificity of host for loranths mistletoes have been recorded time to time by various authors (Barlow, 1997; Barlow & Weins, 1977; Bernys & Graham, 1988; Downy, 1998; Hawksworth, 1983; Hawksworth & Wiens, 1996; Norton & Carpenter, 1998; Shaw, 1994; Singh, 2021; Singh et al, 2016; Singh, Ekka, et al, 2020; Singh & Murugan, 2013; Singh & Ranjan, 2013; Turner, 1991). D. longensis does not show any kind of resemblance or mimicry with their preferred host, however, an endemic and rain forest species of ANIs, D. laljii exhibits high degree of mimicry with their host specificity, Artocapus heterophyllus in leaf form.…”

Section: Discussionmentioning

confidence: 98%

“…D. longensis sp. nov. exhibits most successful haustorial parasitism with specific host species, Mangifera indica L. (Anacardiaceae); however, most of the species of Dendrophthoe have presented the diversified mode of infestation in these Islands (Singh et al, 2016; Singh, Ekka, et al, 2020; Singh & Murugan, 2013; Singh & Ranjan, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Ekka has been recorded from the Nicobar group of Islands (Sivaramakrishna et al, 2021) The Nicobar group of Islands is separated from Andaman group of Islands by 10° channel (10 latitude), a wide gap of 160 km with heavy tidal flows, making sea difficult for transportation. ANI's are a phyto‐geographically important group of 572 Islands, constitute one of the hotspots of biodiversity and are well known for its rich and unique plant diversity with high endemism in India (Singh et al, 2014; Singh, Dwivedi, et al, 2020; Singh, Ekka, et al, 2020, 2021; Singh & Misra, 2020; Singh, Ranjan, et al, 2020, 2021; Singh, Vivek, et al, 2020). Taxonomic studies on Loranthaceae in the country by various workers carried out in the recent past years have led to discovery of novelties, most of them from the tropical zone of the Andaman Islands (Rajsekaran, 2012; Singh, 2013a, 2013b, 2015, 2021; Singh et al, 2014, 2016; Singh & Murugan, 2013; Singh & Ranjan, 2013; Singh, Ranjan, et al, 2020; Singh, Vivek, et al, 2020; Sivaramakrishna et al, 2021), The flora of Andaman group of Islands are closely related to the taxa of south east Asia and mainland India while those of the Nicobar group of Islands exhibits general affinities toward the taxa of Malaysia (Singh et al, 2014; Singh, Ekka, et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Dendrophthoe longensisL.J. Singh, A new species ofDendrophthoe(Loranthaceae) from Andaman and Nicobar Islands, India

Singh

2022

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Dendrophthoe longensis L.J. Singh is described as a new species from the Long Island, Andaman and Nicobar Islands, India, and its conservation status is assessed. It is an aerial branch hemi-parasite on Mangifera indica L. (Anacardiaceae), and serves as a host for caterpillars of Delias eucharis Drury (Lepidoptera: Pieridae); this could be threats to population of the new species. This new species differs from other Dendrophthoe species in vegetative morphology, inflorescence architecture, and floral characters. However, it appears apparently close to D. glabrescens (Blakely) Barlow in growth and habit. A detailed description, photographs, distribution, illustrations, and an identification key to Dendrophthoe species of India are provided.

“…In India, it is found throughout the country including Andaman and Nicobar Islands (ANIs). The ANIs comprise a unique region of rich plant diversity in India with a high rate of endemism and constitutes a recognized hotspot of biodiversity (Singh et al, 2014; Singh, Dwivedi, et al, 2020; Singh, Ekka, et al, 2020, 2021; Singh & Misra, 2020; Singh & Ranjan, 2021; Singh, Ranjan, et al, 2021). The genus Gomphostemma has previously been represented in the ANIs by the single species G. javanicum (Naik et al, 2020; Pandey & Diwakar, 2008; Singh et al, 2014; Singh, Ekka, et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A new species of Gomphostemma (Lamiaceae) from the Andaman and Nicobar Islands, India

Singh,

Naik,

Ekka

2023

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Gomphostemma andamanensis, L.J. Singh, M.C. Naik, & G.A. Ekka sp.nov., is described and illustrated from the Andaman and Nicobar Islands, India. This new species is superficially similar to G. pedunculatum Bentham ex J.D. Hook. and G. strobilinum Wall. ex Benth., but differs markedly by a combination of vegetative morphological, inflorescence architectural, and floral characters. The Onge tribe, the inhabitants of type locality use the species for ethno‐medicinal purposes. The conservation status of the species is assessed as Critically Endangered. A key to the species of Gomphostemma from India is provided.