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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →A 2024 taxonomic revision described four new tarantula species from India’s Western Ghats and proposed a new genus, Cilantica. The species are Cilantica agasthyaensis, Haploclastus ajithii, Haploclastus bratocolonus and Haploclastus montanus. The findings add detail to a group of spiders endemic to the region, but the available reporting does not establish formal threat categories or population trends for each species.
What are the four new Western Ghats tarantulas?
Zeeshan A. Mirza’s 2024 revision of the tarantula subfamily Thrigmopoeinae proposed one new genus and described four species. It drew on re-examination of museum specimens as well as fresh collections across the Western Ghats. The World Spider Catalog currently lists Cilantica agasthyaensis as an accepted species.
| Species | Genus | Reported locality or habitat | Elevation | Diagnostic details |
|---|---|---|---|---|
| Cilantica agasthyaensis Mirza, 2024 | Cilantica | Western Ghats; the species name refers to the Agasthya region | Not stated in the cited reporting | Member of the new genus, distinguished by a scattered pattern of curved bristles |
| Haploclastus ajithii Mirza, 2024 | Haploclastus | Western Ghats; a more specific locality is not stated in the cited reporting | Not stated in the cited reporting | Species described in the revision; a specific diagnostic feature is not stated in the cited reporting |
| Haploclastus bratocolonus Mirza, 2024 | Haploclastus | Reported from hollow trees along rivers | Not stated in the cited reporting | The reported name means “tree dweller”; a specific diagnostic feature is not stated in the cited reporting |
| Haploclastus montanus Mirza, 2024 | Haploclastus | Type locality near Rajamallai in Eravikulam National Park | 2,055 m at the type locality, according to the Zoological Survey of India | Described as a high-elevation species; a specific diagnostic feature is not stated in the cited reporting |
These details are not equally complete for all four species: the cited reporting gives a type locality and elevation for H. montanus, and a habitat note for H. bratocolonus, but does not provide matching locality, elevation or morphology data for every species. The table therefore does not imply that those details are absent from the full taxonomic treatment.
What is the new genus Cilantica?
Cilantica is a newly proposed genus for C. agasthyaensis, its type species. The name derives from a Tamil word for spider. The discovery report describes its diagnostic bristles as curved and scattered, rather than arranged in the C-shaped pattern described for other tarantulas. These fine anatomical traits help taxonomists distinguish related spiders; they are not a practical identification guide for casual observers.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallWhere were the spiders found, and what habitats do they use?
The species come from the Western Ghats, a mountain region in India known for high biodiversity and many endemic species. Reported settings for the tarantulas include hollow trees along rivers, areas near streams and forest paths, and small shola forest fragments surrounded by tea plantations. The reported localities and habitats are not a complete distribution map for each species.
Females were observed carrying egg sacs beneath their chelicerae—the paired mouthparts in front of the fangs. Some were also reported to build hammock-like webs that shelter eggs. These observations describe reproductive behavior; they do not establish how often the behavior occurs across every species.
Are the new tarantulas endangered or threatened by the pet trade?
The cited reporting does not establish formal conservation-status categories or population estimates for the four newly described species. It does identify habitat conversion, forest fragmentation and illegal collection as risks to tarantulas, particularly those confined to small forest patches. The species’ limited known localities make careful monitoring important, but a narrow reported range alone is not a formal threat assessment.
Mirza described tarantulas as predators and biological pest controllers. They are also prey for spider wasps and small carnivores, and their presence can indicate relatively undisturbed habitat. The 2024 paper presents Thrigmopoeinae as a flagship group for invertebrate conservation in the Western Ghats.
Trade adds a separate concern. A 2024 Mongabay report on Alice Hughes’s research said that 25% of tarantula species described since 2000 appeared in the international pet trade. The report also cited an estimate of 1,264 arachnid species traded worldwide and said more than 73% of arachnid species sold online were absent from international trade-monitoring systems. These are figures from Hughes’s research as reported by Mongabay; the report does not give the underlying study’s publication year. They are broad trade figures, not evidence that each of these four species is currently sold or has a measured trade impact.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How can tarantula keepers avoid buying illegally collected spiders?
Mirza’s advice to enthusiasts was to choose species that are captive-bred and not illegally sourced. For any tarantula purchase, ask the seller for clear, credible information about the spider’s origin and captive-bred status, and avoid a sale if that provenance cannot be substantiated. Do not collect wild tarantulas: taking animals from small, fragmented habitats can add pressure to populations that are difficult to monitor.
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