Published September 19, 2025
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TABLE 5 in Rediscovery of synanthropic silverfish Ctenolepisma calvum (Ritter, 1910) (Insecta: Zygentoma: Lepismatidae: Ctenolepismatinae) from Kerala, India and assignation of European C. calvum to a new species
Creators
- 1. Department of Zoology, St. Thomas College (Autonomous), Thrissur affiliated to the University of Calicut, Malappuram 673635, Kerala (India)
- 2. Departamento de Zoología, University of Córdoba, Campus de Rabanales, 14071 Córdoba (Spain)
- 3. Australian Museum Research Institute, Australian Museum, 1 William Street Darlinghurst, NSW, 2010, Sydney (Australia
- 4. Department of Zoology, St. Thomas College (Autonomous), Thrissur - 1 affiliated to the University of Calicut, Malappuram 673635, Kerala (India)
Description
TABLE 5. — Comparison of Ctenolepisma calvum (Ritter, 1910) (Kerala, India) and Ctenolepisma phantasma Molero-Baltanás, Raphel, Mitchell & Jose, n. sp. (European specimens described in Molero-Baltanás et al. (2024a) as C. calvum).
| Character | Ctenolepisma calvum (Ritter, 1910) from Kerala | Ctenolepisma phantasma Molero-Baltanás, Raphel, Mitchell & Jose, n. sp. from Europe |
|---|---|---|
| Body length | Up to 10 mm | Up to 12 mm (usually 8-9 mm) |
| Number of sensory papillae in labial palp | 5 in a single row | 3 in single row |
| Number of lateral combs on pronotum | (8-9) + (8-10) | 8 |
| Number of macrosetae of lateral combs of pronotum | 2-5 | 1-4 |
| Number of lateral combs on mesonotum | (8-9) + (8-9) | (7-8) + (7-8) |
| Number of macrosetae of lateral combs of mesonotum | 2-3 | 1-3 |
| Number of lateral combs on metanotum | (5-6) + (5-7) | (5-8) + (5-8) |
| Number of macrosetae of lateral combs of metanotum | 1-3 | 1-3 |
| Number of macrosetae of posterolateral combs of thoracic nota | 2-3 | 1-3 |
| Anterior trichobothrial position of pronotum | N-4 (or N-5) | N-3 |
| Anterior trichobothrial position of mesonotum | N-1 | N-2 |
| Number of macrosetae of prosternal combs | 7-10 | 3-4 |
| Number of macrosetae of mesosternal combs | 5-8 | 4-5 |
| Number of macrosetae of metasternal combs | 7-10 | 4-6 |
| Metasternum ratio length/width | 0.9-1.0 | 0.87 |
| Number of macrosetae of infralateral combs of urotergites II-VIII | 3-5 | 3-4 |
| Number of macrosetae of sublateral combs of urotergites II-VIII | 2 | 2-3 |
| Number of macrosetae of submedian combs of urotergites II-VIII | 2-3 | 1-2 |
| Number of macrosetae of lateral combs of urosternites | 4-13 | 4-8 |
| Number of pairs styli | 2 pairs (on VIII and IX) | 1 pair (on IX) |
| Scales on femora | Subtriangular, elongate, | Subtriangular, elongate, |
| bifid or truncate apically | bifid or truncate apically |
Notes
Published as part of Rafael, Sheeba Raphel, Andrew, Rafael Molero-Baltanás, Joyce, Andrew Mitchell & Jose, Joyce, 2025, Rediscovery of synanthropic silverfish Ctenolepisma calvum (Ritter, 1910) (Insecta: Zygentoma: Lepismatidae: Ctenolepismatinae) from Kerala, India and assignation of European C. calvum to a new species, pp. 441 in Zoosystema 47 (21) on page 441, DOI: 10.5252/zoosystema2025v47a21, http://zenodo.org/record/17178484
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Additional details
Identifiers
References
- RITTER W. 1910. - Neue Thysanuren und Collembolen aus Ceylon und Bombay, gesammelt von Dr. Uzel. Annalen des Naturhistorisches Hofmuseum 24: 379-398. https://www.jstor.org/stable/41768082
- MOLERO-BALTANAS R., MITCHELL A., GAJU-RICART M. & ROBLA J. 2024 a. - Worldwide revision of synanthropic silverfish (Insecta: Zygentoma: Lepismatidae) combining morphological and molecular data. Journal of Insect Science 24 (3). https://doi.org/10.1093/jisesa/ieae045