Published May 26, 2021 | Version v1
Taxonomic treatment Open

Torleya coheri

  • 1. National Museum of Natural History, National Academy of Sciences of Ukraine, Bohdan Khmelnytsky Str., 15, 01030, Kyiv, Ukraine. martynov _ av @ ukr. net; centroptilum @ gmail. com; https: // orcid. org / 0000 - 0002 - 6506 - 5134
  • 2. Department of Zoology, The Madura College (Autonomous), Madurai- 625011, Tamil Nadu, India.
  • 3. Zoological Survey of India, Southern Regional Centre, Santhome High Road, Chennai- 600028, India. & subbuka. zsi @ gmail. com; https: // orcid. org / 0000 - 0003 - 0872 - 9771
  • 4. Flat 3, Gokulam Apartments, No. 7, Gokulam Colony, West Mambalam, Chennai- 600 033, India.
  • 5. Zoological Survey of India, Southern Regional Centre, Santhome High Road, Chennai- 600028, India. & vasan 071994 @ gmail. com; https: // orcid. org / 0000 - 0003 - 4446 - 4889
  • 6. Zoological Survey of India, Arunachal Pradesh Regional Centre, Itanagar- 791113, Arunachal Pradesh, India. sinhabj @ gmail. com; https: // orcid. org / 0000 - 0002 - 9904 - 4964
  • 7. Division of Science, Indiana University Purdue University Columbus, Columbus, Indiana, 47203, USA. lukemjacobus @ alumni. purdue. edu; https: // orcid. org / 0000 - 0002 - 7201 - 3922

Description

Torleya coheri (Allen & Edmunds, 1963)

(Fig. 10)

Ephemerella coheri Allen & Edmunds, 1963

Crinitella permkami Wang & Sites, 1999 (junior synonym, Jacobus & McCafferty 2003)

Material examined. INDIA: 14 larvae, Arunachal Pradesh, Lower Subansiri District, Tale Valley, 27.537201°N, 93.959883°E, h ~ 2370 m a.s.l., 14.iv.2015, Coll. K.A. Subramanian — Reg. No. 5608/H13 [ZSI]; 1 larva, Arunachal Pradesh, Lower Subansiri District, Ranga River, 27.396404°N, 93.757378°E, h ~ 625 m a.s.l., 21.iv.2015, Colls. K.A. Subramanian & Bikramjit Sinha — Reg. No. 5347/H13 [ZSI]; 13 larvae, Arunachal Pradesh, Papum Pare District, Dibru River, 27.147655°N, 93.74908°E, h ~ 128 m a.s.l., 22.iv.2015, Colls. K.A. Subramanian & Bikramjit Sinha — Reg. No. 5609/H13 [ZSI]; 1 larva, West Bengal, Darjeeling (Sikkim border), Rishikhola, Rishi River, 27.169677°N, 88.635109°E, h ~ 554 m a.s.l., 23.iii.2013, Coll. Srimoyee Basu — Reg. No. 5349/H13 [ZSI]. NEPAL: 3 larvae, Bagmati Zone, East Rapti River, 27.571631, 84.668756, h— 230 m a.s.l., 27.i.2014, Chertoprud M. V. leg.— IN Nepa 16 Torsp 1 [NMNH NASU].

Diagnosis. This species can be distinguished from other Torleya species by the following combination of characters: Larva: (i) dorsal surface of body covered by long hair-like setae (Fig. 10A; fig. 1 in Allen & Edmunds 1963); (ii) maxilla with rudimentary palp (fig. 13 in Allen & Edmunds 1963); (iii) anteromedian emargination very shallow, almost absent (fig. 14 in Allen & Edmunds 1963); (iv) labium highly reduced (fig. 17 in Allen & Edmunds 1963); (v) abdominal segment VIII with a unique shape and setation (Fig. 10A, C; fig. 1 in Allen & Edmunds 1963; fig. 1 in Jacobus et al. 2007); (vi) posterolateral projections of segment IX extremely elongated (Fig. 10A, C; fig. 1 in Allen & Edmunds 1963); (vii) tarsal claw with distinct distal palisade of denticles (Fig. 10B; fig. 15 in Allen & Edmunds 1963); (viii) lateral margins of abdominal segments IV–VIII with short stout setae; stout setae on segment VIII pass over acute posterior projection (fig. 1 in Allen & Edmunds 1963); (ix) paired submedial projections on abdominal terga are absent (Fig. 10C; fig. 1 in Allen & Edmunds 1963); (x) gills III–VI with outer posterolateral protuberances, gill III not covering following gills entirely (figs 1, 16 in Allen & Edmunds 1963). Male imago: (xi) penis short, lobes apically rounded (fig. 2 in Jacobus et al. 2007); (xii) dorsal projection of penis small, rounded, with broad apical cleft (figs 2, 4 in Jacobus et al. 2007) (xiii) genital forceps segment II robust, with relatively straight lateral profile, not expanded apically and segment III subovoid (fig. 2 in Jacobus et al. 2007); (xiv) abdomen with light general coloration and purple shading, lacking a prominent, middorsal, longitudinal stripe (figs 3, 4 in Jacobus et al. 2007).

Distribution. India (Allen 1980, Jacobus & McCafferty 2003, Jacobus et al. 2007, new data), India-China border region (new data), Malaysia (Jacobus et al. 2007), Nepal (Allen & Edmunds 1963, new data), Thailand (Wang & Sites 1999; Jacobus et al. 2007) and Vietnam (Jacobus et al. 2007).

Remarks. The larva of this species was adequately described and illustrated from Nepal by Allen & Edmunds (1963) and from Thailand by Wang & Sites (1999) (as Crinitella permkami Wang & Sites, 1999, junior synonym). Larvae of this species already were reported from Kashmir, and the adult description and details of species variability were provided by Jacobus et al. (2007). Following Jacobus & McCafferty (2008), we consider Crinitella Allen & Edmunds, 1963 as a junior synonym of Torleya Lestage, 1917. Ogden et al. (2009: figs 1, 2) could not confirm monophyly of Crinitella + Torleya, however, based on their partial sampling of these genus groups.

The other Indomalayan species of Torleya include T. dibruensis sp. nov., T. lacuna (Jacobus, McCafferty & Sites, 2007), T. longforceps (Gui, Zhou & Su, 1999), T. lutosa Kang & Yang, 1995, T. naga Jacobus & McCafferty (in Jacobus et al.), 2004, T. nepalica (Allen & Edmunds, 1963) and T. simbalbarensis sp. nov.

Notes

Published as part of Martynov, Alexander V., Selvakumar, C., Subramanian, K. A., Sivaramakrishnan, K. G., Vasanth, M., Sinha, Bikramjit & Jacobus, Luke M., 2021, Overview of Indian Hyrtanellini (Ephemeroptera: Ephemerellidae), with new species and records from related regions, pp. 451-482 in Zootaxa 4975 (3) on pages 466-467, DOI: 10.11646/zootaxa.4975.3.2, http://zenodo.org/record/4808307

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References

  • Allen, R. K. & Edmunds Jr., G. F. (1963) New and little known Ephemerellidae from southern Asia, Africa and Madagascar. Pacific Insects, 5 (1), 11 - 22.
  • Wang, T. & Sites, R. W. (1999) Description of a new species of Crinitella (Ephemeroptera: Ephemerellidae) from Thailand. Journal of the New York Entomological Society, 107 (1), 73 - 77.
  • Jacobus, L. M. & McCafferty, W. P. (2003) Revisions to the genus Crinitella (Ephemeroptera: Ephmerellidae). Journal of the New York Entomological Society, 111 (1), 48 - 50.
  • Jacobus, L. M., McCafferty, W. P. & Sites, R. W. (2007) A new species and first stage associations in Crinitella (Ephemeroptera: Ephemerellidae: Ephemerellinae). Zootaxa, 1611 (1), 45 - 53. https: // doi. org / 10.11646 / zootaxa. 1611.1.3
  • Allen, R. K. (1980) Geographic distribution and reclassification of the subfamily Ephemerellinae (Ephemeroptera: Ephemerellidae). In: Flannagan, J. F. & Marshall, K. E. (Eds.), Advances in Ephemeroptera Biology. Plenum Press, New York, pp. 71 - 91. https: // doi. org / 10.1007 / 978 - 1 - 4613 - 3066 - 0 _ 6
  • Jacobus, L. M. & McCafferty, W. P. (2008) Revision of Ephemerellidae genera (Ephemeroptera). Transactions of the American Entomological Society, 134 (1 - 2), 185 - 274. https: // doi. org / 10.3157 / 0002 - 8320 (2008) 134 [185: ROEGE] 2.0. CO; 2
  • Ogden, T. H., Osborne, J. T., Jacobus, L. M. & Whiting, M. F. (2009) Combined molecular and morphological phylogeny of Ephemerellinae (Ephemerellidae: Ephemeroptera), with remarks about classification. Zootaxa, 1991 (1), 28 - 42. https: // doi. org / 10.11646 / zootaxa. 1991.1.2
  • Gui, H., Zhou, C. - F. & Su, C. - R. (1999) Ephemeroptera. In: Huang, B. - K. (Ed.), Fujian Insect Fauna. Vol. 1. Fujian Science & Technology Press, Fuzhou, pp. 324 - 346.
  • Kang, S. C. & Yang, C. T. (1995) Ephemerellidae of Taiwan (Insecta, Ephemeroptera). Bulletin of National Museum of Natural Science, 5, 95 - 116.