John Caleb

John Caleb

Ph.D
Exploring Indian spider diversity through new discoveries and revisions

About

104
Publications
43,665
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Introduction
I am an arachnologist and my work mainly focuses on the taxonomy and diversity of jumping spiders (Salticidae) of the Indian subcontinent. I also attempt to bring clarity to the diversity of Indian spiders by taxonomic revision of few other families such as Corinnidae, Gnaphosidae, Lycosidae and Oxyopidae.
Additional affiliations
March 2017 - March 2020
Zoological Survey of India
Position
  • Research Associate
Description
  • Molecular systematics, Taxonomy
Education
August 2010 - October 2016
Madras Christian College
Field of study
  • Biotechnology-Zoology
June 2007 - May 2009
Loyola College
Field of study
  • Biotechnology
June 2004 - April 2007
Loyola College
Field of study
  • Zoology

Publications

Publications (104)
Article
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The types of four Oxyopes species kept in the British Museum of Natural History, London and the National Zoological collection, Zoological Survey of India (Kolkata) are reexamined. Three new synonyms are recognized: Oxyopes nilgiricus Sherriffs 1955 syn. nov., O. pankaji Gajbe & Gajbe 2000 syn. nov. and O. ratnae Tikader 1970 syn. nov. with O. hind...
Article
The spitting spider Scytodes fusca is recorded from Tamil Nadu and Karnataka in South India. The species is re-described and illustrated in detail, with natural history notes and digital images, with a summary of diagnostic characters. The updated distributional records of the species in India are also mapped.
Article
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The type materials of seven Indian Rhene species available at the Zoological Survey of India, Kolkata, have been studied. R. mus (Simon, 1889) is illustrated for the first time in 132 years since its first description. Eleven new synonyms and five new combinations are proposed: Zeuxippus Thorell, 1891 syn. n. with Rhene Thorell, 1869; R. biembolusa...
Article
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We describe three new species of Stenaelurillus Simon, 1886 from the Deccan Plateau of India, and report on populations of S. sarojinae Caleb & Mathai, 2014 and S. marusiki Logunov, 2001. One of the new species, S. shwetamukhi Marathe, Sanap, & Maddison, sp. nov., has black-and-white markings, characteristic of several other Indian Stenaelurillus s...
Article
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A new jumping spider species, Langelurillus tertius sp. nov. (♂♀), is described from the Ajanta and Sathmala hill ranges of the Deccan plateau in Maharashtra (India). Detailed description, illustrations, and a map showing the distribution of all known Indian congeners are provided.
Book
Full-text available
The book is intended to showcase the rich diversity of spiders from the scrub jungle. Scrub jungles are an integral part of the Tropical Dry Evergreen Forests found along the Coromandel Coast which are highly degraded and rapidly vanishing (with only 1 % of it still remaining) due to anthropogenic activities. Conserving the habitat is of prime impo...
Article
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Uloborus ferokus Bradoo, 1979 observed to be a commensal with the eresid social spider Stegodyphus sarasinorum Karsch, 1892 (Bradoo 1979) were observed and collected during recent surveys in Andhra Pradesh, Gujarat, Karnataka and Kerala states of India. Detailed examination of the specimens revealed that it is misplaced in Uloborus, but rather has...
Article
Spider diversity and composition was assessed by various field surveys in the campus and its surroundings of Forest College and Research Institute, Mettupalayam, located in foothills of Nilgiris, Western Ghats, Coimbatore district, Tamil Nadu from January 2019 to June 2019. Four micro-habitats identified for the study purpose were Jatropha plantati...
Article
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A new species of the jumping spider genus Carrhotus Thorell, 1891, C. tholpettyensis sp.n. is diagnosed and described from the Wayanad Wildlife Sanctuary, Western Ghats, Kerala, India. Detailed morphological descriptions, diagnoses and illustrations of the copulatory organs of both sexes are provided. A map depicting the current distribution of the...
Article
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New distributional records of Maripanthus gloria Caleb, 2021 and Maripanthus jubatus Maddison, 2020 from southern India are reported. Diagnosis and images of both the species are provided and the updated distributional records are also mapped.
Article
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The Chinese species Araneus tubabdominus Zhu & Zhang, 1993 is recorded for the first time from India. A detailed redescription and illustrations of the female are provided along with a distributional map of the species.
Article
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Indian Megamyrmaekion and Sosticus species are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. The following new synonymies are recognised: Megamyrmaekion ashae syn. nov. is synonymised with Megamyrmaekion caudatum Reuss, 1834, Megamyrmaekion kajalae syn. nov. with Dra...
Article
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The types of Marpissa tigrina Tikader, 1965 and M. kalapani Tikader, 1977 that are kept in the National Zoological collection, Zoological Survey of India (Kolkata) are re-examined and illustrated. A new combination, Epocilla aura (Dyal, 1935) comb.n. (ex. Thiania), is proposed and three new synonyms are established: Epocilla pakhtunkhwa Ali et Madd...
Article
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Two new species of the jumping spiders, Phintella cholkei sp.n. and Icius tukarami sp.n., from Maharashtra state, India are described. Their detailed morphological descriptions, diagnoses and illustrations of the copulatory organs are provided. Yet, observations on maternal care and habitat of P. cholkei sp.n. are provided as well.
Article
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Dexippus kleini Thorell 1891 is recorded for the first time from India based on a sample collected from Assam, northeastern India which is about 2600 km away from its type locality. The species is diagnosed and illustrated in detail along with notes on its natural history, and a distributional map is also provided. The present species is recorded f...
Article
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Indian wolf spider species of the genus Evippa Simon, 1882 based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata are revised. One new synonymy is recognised: Evippa mandlaensis Gajbe, 2004 syn. nov. is synonymised with Wadicosa fidelis (O. Pickard-Cambridge, 1872). All the type material exam...
Article
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The Indian spider species of the genera Apodrassodes, Herpyllus and Sergiolus are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. The following new combinations are recognised: Coillina yogeshi comb. nov., transferred from Apodrassodes, Scotophaeus goaensis comb. nov....
Article
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A new species of the genus Maripanthus Maddison, 2020, M. gloria Caleb, sp. nov. (♂♀) is diagnosed and described from the Karnataka State of India. A map showing the distributional records of all known congeners is provided.
Article
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Indian species in the wolf spider genus Arctosa C.L. Koch, 1847 are revised based on the type material deposited in the National Zoological Collection, Zoological Survey of India, Kolkata, Entomology Laboratory, Department of Zoology, University of Calcutta, and Naturhistorisches Museum, Vienna. Arctosa tappaensis Gajbe, 2004 is proposed as a junio...
Article
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Indian species in the genus Sphingius Thorell, 1890 are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. Sphingius barkudensis Gravely, 1931, S. nilgiriensis Gravely, 1931 and S. paltaensis Biswas & Biswas, 1992 are redescribed. Two new combinations and one new synonymy...
Article
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The selenopid genus Makdiops Crews & Harvey, 2011 was recently erected by Crews and Harvey (2011) with Selenops montigena Simon, 1889 as the type species. The genus represents medium-sized, usually high-altitude-dwelling spiders that can be diagnosed by the pattern of ventral spination of the anterior tibiae and metatarsi (4–3, 3–3 or 3–2) and by t...
Article
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A new jumping spider species, Chinattus prabodhi sp. nov. is described based on female specimens collected from Assam State of India. Females of the new species can be distinguished from other known congeners by the epigyne lacking a distinctive circular median pocket, the long, narrow and arching copulatory ducts, aligned posteriorly at the copula...
Article
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Indian Phaeocedus species are revised based on the type material deposited in the Zoological Survey of India, Kolkata and the Oxford University Museum of Natural History, Oxford. Phaeocedus poonaensis syn. nov. is synonymised with Poecilochroa taborensis and Phaeocedus nicobarensis syn. nov. is synonymised with Pandava laminata (Titanoecidae). Two...
Article
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Asianopis goalparaensis (Tikader et Malhotra, 1978) comb.n. belonging to the liukuensis species group is redescribed on the basis of fresh specimens collected from Assam, India. Detailed illustrations, a distributional map and notes on its natural history are provided.
Article
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Two genera — Portia Karsch, 1878 and Rhene Thorell, 1869 — and six species — Myrmarachne kiboschensis Lessert, 1925, M. prava (Karsch, 1880), Plexippus clemens (O. Pickard-Cambridge, 1872), Portia albimana (Simon, 1900), Rhene flavigera (C.L. Koch, 1846) and Thyene bivittata Xie et Peng, 1995 — are recorded from Pakistan for the first time. A map s...
Article
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Plator species described in India are revised based on the type materials deposited in the National Zoological Collection, Zoological Survey of India, Kolkata. Five species are known in India, of which three are known only from females while the remaining two are from both sexes. All the type materials examined are imaged and redescribed.
Article
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Indian spider species currently assigned to Storena Walckenaer, 1805 are revised mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. A new genus, Laminion gen. nov. is proposed to include four species; three are transferred from Storena: Laminion arakuensis (Patel & Reddy, 1989) ge...
Article
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The spider genus Glenognatha Simon, 1887 (Tetragnathidae) currently has 34 nominal species distributed in Afrotropical region, Indo-Malaya, Nearctic, Neotropics, Oceania and Palearctic regions (Cabra-García & Brescovit 2016; World Spider Catalog 2020). It has one representative in India: Glenognatha dentata (Zhu & Wen, 1978) (World Spider Catalog 2...
Article
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Indian species of Drassyllus and Nodocion are revised, mostly based on the type material available in the National Zoological Collection, Zoological Survey of India, Kolkata. All the Indian representatives of the former genus are transferred to Cryptodrassus, with a synonymy of Drassyllus jabalpurensis syn. nov. with Cryptodrassus khajuriai comb. n...
Article
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Asemonea cristata Thorell, 1895 is redescribed on the basis of newly collected materials from the Western Ghats region, Kerala, India. Asemonea picta Thorell, 1895 and A. santinagarensis (Biswas et Biswas, 1992) are synonymised with A. cristata. Collecting localities of A. cristata are mapped as well.
Article
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The genus Vailimia Kammerer, 2006 is recorded for the first time from India. Two new species, Vailimia ajmerensis Caleb & Jangid sp. nov. (♂), and V. jharbari Basumatary, Caleb & Das sp. nov. (♂♀), are described and illustrated in detail. Presently, the genus is known only by the males, which means that the female of V. jharbari described herein is...
Article
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The golden orb-weaving spider genus Nephila Leach, 1815 currently has four representatives in India: Nephila dirangensis Biswas & Biswas, 2006, Nephila kuhlii (Doleschall, 1859), Nephila pilipes (Fabricius, 1793) and Nephila robusta Tikader, 1962 (World Spider Catalog 2020). While N. kuhlii has its type locality in Java (Doleschall 1859) and that o...
Article
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Phintelloides manipur Caleb sp. nov. is diagnosed and described from north-eastern India. Phintelloides versicolor (C.L. Koch, 1846) is recorded for the fi rst time from India and Myanmar. Two new combinations are proposed: Phintelloides singhi (Monga, Singh & Sadana, 1989) comb. nov. transferred from Marpissa C.L. Koch, 1846 and Phintelloides undu...
Book
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A total of 108 species of spider species belonging to 84 genera and 25 families were identified from the scrub jungle of the Madras Christian College campus. Pagida salticiformis (O. Pickard-Cambridge, 1883) is recorded for the first time from India. Langona tigrina (Simon, 1885) is rediscovered 135 years since its first description and the unknown...
Article
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Three new species of the genus Carrhotus Thorell, 1891 — C. andhra Caleb sp.n. (♂), C. assam Caleb sp.n. (♂) and C. silanthi Caleb sp.n. (♂♀) — are diagnosed and described from Andhra Pradesh, Assam and Tamil Nadu States of India respectively. A new combination is established, Carrhotus yunnanensis (Song, 1991) comb.n., ex Ptocasius. Five new synon...
Article
A new genus of the spider family Deinopidae C.L. Koch, 1850 is described from Asia: Asianopis Lin & Li gen. nov. , with A. zhuanghaoyuni Lin & Li sp. nov. as the type species. The new genus is divided into two species groups, of which the liukuensis -group includes two species: A. dumogae (Merian, 1911) sp. reval. comb. nov. (♀) and A. liukuensis (...
Research
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‘Araneae of India’ provides an overview of the spider diversity of India. All available published taxonomic papers and distributional records are enlisted. The number of spider species known from India have risen steadily from 1067 species (Tikader, 1987), 1442 species (Siliwal et al., 2005), 1520 species (Sebastian & Peter, 2009) to 1686 species (...
Article
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This study documents the spider fauna in the vicinity of a suburban lake (Araabath Lake) in Chennai. A total of 70 species of spiders belonging to 58 genera and 21 families were recorded. Seven species are endemic to India and six are endemic to India and Sri Lanka. Salticidae was the most dominant with 24 species belonging to 19 genera. Guild stru...
Article
A new species – Theridion odisha sp.n. – is described from Odisha state, India. An updated checklist of Theridion species known from India with taxonomic remarks is enlisted and mapped. Two new combinations are also proposed, Nihonhimea indicum (Tikader, 1977) comb.n., ex Theridion and Nihonhimea tikaderi (Patel, 1973) comb.n., ex Theridion. Nihonh...
Article
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The jumping spider genus Schenkelia Lessert 1927 is recorded from India with the discovery of the species Schenkelia aurantia Kanesharatnam & Benjamin 2018. Digital images of the general habitus and male palp are provided. The distributional records of the species are mapped.
Research
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New observations on the behaviour of Neobrettus tibialis in West Bengal include documentation of brooding behaviour by females, mating by brooding females, and filial oophagy by females. These add to earlier published observations of these spiders (Ahmed et al. 2018). Examination of the microscopic anatomy of both males and females now supports the...
Preprint
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A new species-Theridion odisha sp.n.-is described from Odisha state, India. An updated checklist of Theridion species known from India with taxonomic remarks is enlisted and mapped. Two new combinations are also proposed, Nihonhimea indicum (Tikader, 1977) comb.n., ex Theridion and Nihonhimea tikaderi (Patel, 1973) comb.n., ex Theridion. Nihonhimea...
Article
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Spiders are mega diverse arthropods and play an important role in the ecosystem. Identification of this group is challenging due to their cryptic behavior, sexual dimorphism, and unavailability of taxonomic keys for juveniles. To overcome these obstacles, DNA barcoding plays a pivotal role in spider identification throughout the globe. This study i...
Article
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Rudakius ludhianaensis (Tikader,1974) is redescribed based on the type series and new materials from India and Pakistan. A detailed morphological description, diagnosis and illustrations of the copulatory organs are provided. The updated distribution range of the species is mapped. R. ludhianaensis is shown to be a senior synonym of two species nam...
Article
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Choudhury et al. (2019) presented a preliminary list of 248 spider species known to occur from Odisha State based on the compilation of all published literature and fresh collections carried out during 2016–2017. However, the presented checklist seems to be incomplete, since not all species have been identified up to the species level. Several spec...
Article
The genus Deinopis was established by MacLeay (1839) with D. lamia MacLeay, 1839 as its type species. It is the most speciose deinopid genus presently comprising 51 described species, of which two are known from India (World Spider Catalog 2019). The genus was first recorded from India with the description of the species, Deinopis goalparaensis Tik...
Article
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The Indian spider species formerly placed in the zodariid genus Lutica Marx, 1891 are revised. The following new combinations are proposed: Tropizodium bengalensis (Tikader & Patel, 1975) comb. nov., Tropizodium kovvurensis (Reddy & Patel, 1993) comb. nov., Tropizodium poonaensis (Tikader, 1981) comb. nov. and Zodarion deccanensis (Tikader & Malhot...
Article
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Indian Scopoides species have been revised. Three new combinations are proposed: Poecilochroa kuljitae (Tikader, 1982) comb. nov., Megamyrmaekion pritiae (Tikader, 1982) comb. nov. and Megamyrmaekion tikaderi (Gajbe, 1987) comb. nov.. Scopoides maitraiae (Tikader & Gajbe, 1977) and Scopoides samarae Gawande & Bodkhe, 2018 are synonymized with Drass...
Article
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A new species of the genus Pancorius Simon, 1902 – P. nagaland sp.n. – is diagnosed and described from north-eastern India. Two species: P. magnus Żabka, 1985 and P. tagorei Prószyński, 1992 are illustrated in detail and Plexippus pseudopaykulli Sen, Dhali, Saha et Raychaudhuri, 2015 syn.n. is recognized as a junior synonym of Pancorius darjeelingi...
Article
A new species of the family Endromidae, Mustilizans zolotuhini sp. nov. is described from Dihang-Dibang Biosphere Reserve, Arunachal Pradesh, India. The subspecies, Mustilizans dierli refugialis Zolotuhin, 2007 is recorded for the first time from Sikkim, India. The distribution of the species known from India is mapped. The holotype of the new spec...
Article
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Indian species in the castianeirine genus Castianeira Keyserling, 1879 (Corinnidae) are partly revised based on type materials deposited in the National Zoological Collection, Zoological Survey of India, Kolkata. Two new synonyms are recognized: Castianeira himalayensis Gravely, 1931 syn. nov. is synonymised with Corinnomma severum (Thorell, 1877),...
Article
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The species, Oxyopes nilgiricus Sherriffs, 1955 was overlooked and left out from the Indian checklists beginning from Tikader (1987), Siliwal, Molur & Biswas (2005), Sebastian & Peter (2009) to Keswani, Hadole & Rajoria (2012). It is astounding that a species bearing in its name, its origin, to have been missing from the lists for about 63 years.
Article
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A new species of the hisponine jumping spider genus Jerzego Maddison, 2014 – Jerzego sunillimaye sp.n. (♂♀) – is described. The species was found inhabiting the jungle floor of Aarey Milk Colony, Mumbai (Maharashtra, India). Detailed descriptions and diagnostic illustrations of the species along with observations of mating, ovipostion, and postembr...
Article
A new species of the hisponine jumping spider genus Jerzego Maddison, 2014 — Jerzego sunillimaye sp.n. (#$) — is described. The species was found inhabiting the jungle floor of Aarey Milk Colony, Mumbai (Maharashtra, India). A detailed description and diagnostic illustrations of the species along with observations of mating, ovipostion, and postemb...
Article
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A female specimen of Poltys (Araneidae) is reported from southern Iran, representing the first record of the genus for the whole Middle East and its westernmost record in the entire Asian region. The specimen was identified as Poltys nagpurensis Tikader, 1982, previously known only from central and western India. Since the Iranian specimen differs i...
Article
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Olios lamarcki (Latreille, 1806) is redescribed based on recently collected specimens from Chennai, Tamil Nadu, India. The internal structures of the female genitalia are illustrated in detail for the first time.
Article
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A new species of the genus Pseudopoda Jäger, 2000, P. cheppe sp. n. is described from the Indian Himalayas. Detailed description and illustrations are provided.
Article
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A new species of the genus Brettus Thorell, 1895 – B. gravelyi sp.n. – is diagnosed and described from Darjeeling district, West Bengal State of India.
Article
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Two new jumping spider species: Nandicius vallisflorum sp. n. , (♀) and Pellenes himalaya sp. n. (♂, ♀), are diagnosed, described and illustrated in detail. The specimens were collected from the Valley of Flowers, western Himalayas, Uttarakhand State of India.