Published January 14, 2021 | Version v1
Taxonomic treatment Open

Isonychia Eaton 1871

  • 1. Department of Zoology & Microbiology, Thiagarajar College, Madurai- 625009, Tamil Nadu, India.
  • 2. Department of Zoology & Microbiology, Thiagarajar College, Madurai- 625009, Tamil Nadu, India. & thangamrathinakumar 1986 @ gmail. com; https: // orcid. org / 0000 - 0002 - 3492 - 5138
  • 3. Flat 3, Door No. 7, Gokulam Apartments, Gokulam Colony, West Mambalam, Chennai- 600033.

Description

Key to the known larvae of Oriental Isonychia

1. Posterolateral projections on abdominal segments I–IX progressively longer and pointed (You & Su, 1987)............................................................................................... Isonychia kiangsinensis

- Posterolateral projections of anterior abdominal segments blunt and small, acute on segments VIII and IX, largest on segment IX ................................................................................................. 2

2. Terga II–X with a pair of vague oblique stripes (Kang & Yang, 1994)............................ Isonychia formosana

- Terga II–X without a pair of vague oblique stripes........................................................... 3

3. Ventral cleft of hind femur with 5 spines, claw curved with 6 denticles; tergites II–IV without any distinct stripe medially; abdomen uniform brown, somewhat yellow; tergites V–X with a pair vague oblique stripes............ Isonychia radhae n. sp.

- Ventral cleft of hind femur with 6 spines, claw curved with 8 denticles; terga VII and VIII with paired pale yellow submedian stripe; abdominal terga X pale yellow in anterior ¼ and dark brown in posterior ¾ (Vasanth et al., 2019)................................................................................................... Isonychia moyarensis

Notes

Published as part of Muthukatturaja, M., Balasubramanian, C., Rathinakumar, T. & Sivaramakrishnan, K. G., 2021, A new species of Isonychia Eaton, 1871 (Ephemeroptera: Isonychiidae) from Kapila River, Central Western Ghats, India, pp. 283-291 in Zootaxa 4908 (2) on page 289, DOI: 10.11646/zootaxa.4908.2.9, http://zenodo.org/record/4438450

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Additional details

References

  • You, D. & Su, C. (1987) Descriptions of the nymphs of Choroterpes nanjingensis, Potamanthodes fujianensis and Isonychia kiangsinensis (Ephemeroptera: Leptophlebiidae, Potamanthidae, Siphlonuridae). Acta Zootaxonomica Sinica, 12 (3), 332 - 336.
  • Kang, S. C. & Yang, C. T. (1994) The nymph of Isonychia formosana (Ephemeroptera: Oligoneuriidae). Journal of Taiwan Museum, 47, 1 - 3.
  • Vasanth, M., Selvakumar, C., Subramanian, K. A., Babu, R. & Sivaramakrishnan, K. G. (2019) A new record of the family Isonychiidae (Insecta: Ephemeroptera) from the Western Ghats, India with a description of new species. Zootaxa, 4586 (1), 162 - 170. https: // doi. org / 10.11646 / zootaxa. 4586.1.9