Isotoma anglicana Lubbock, 1862

Shayanmehr, Masoumeh, Mirab-Balou, Majid & Kaprus, Igor, 2017, New additions to Iranian Collembola (Entognatha: Hexapoda) from Ilam Province (western Iran), Turkish Journal of Zoology 41 (4), pp. 744-748 : 745-746

Isotoma anglicana Lubbock, 1862 (Family Isotomidae ) ( Figure 3 )

Material studied. IRAN: More than 20 specimens, Ilam Province: soil and leaf litter under Scotch pine ( Pinus spp. ), Dalab Forest Park (33°40′20″N, 46°20′56″E, alt. 2650 m), Ilam, March 2014, July 2015 ; soil under oak trees ( Quercus brantii ), Arghavan Forest Park (33°38′57.694″N, 46°26′54.900″E, alt. 1517 m), Ilam, March 2014 ; soil and leaf litter under cypress trees ( Cupressus spp. ), Ilam University (33°45′6.806″N, 46°22′49.648″E, alt. 1395 m), Ilam, September 2015 ; soil under rose flowers ( Rosa spp. ), Ilam University , Ilam, August 2015 ; soil and leaf litter under oak trees ( Quercus brantii ), Gachan Mountain (33°38′43.08″N, 46°29′9.96″E, alt. 2330 m), Ilam, February 2014, leg. M. Mirab-Balou.

Ecology: Generally eurytopic species with a high preference for open biotopes. It prefers damp and cold habitats. In central Europe, it is common in different open sites under arable management. It is a dominant species in sugar beet fields in Poland. In recultivation sites of an opencast lignite mine in Germany, this species is common during the first stage of succession. Frequent in urban soils

SHAYANMEHR et al. / Turk J Zool under single trees in Moscow. It shows a positive reaction to Cd- and Zn-rich sewage sludge. The species has a 1-year life cycle with a population peak in spring ( Potapov, 2001).

Distribution: Europe (central and northern), Arctic, Russia, Turkmenia, Tajikistan ( Potapov, 2001).

Remarks. Isotoma anglicana and I. viridis are similar, but they can be reliably separated by examining the manubrial teeth. I. viridis has a single pair of teeth on the thickened apical edge of the manubrium, whereas I. anglicana has 2 pairs of manubrial teeth. I. anglicana is more bluish-gray/brown in color than I. viridis , which tends to be more greenish, but this is not entirely reliable. Many of the literature records for I. viridis probably refer to I. anglicana , which is undoubtedly widespread and common. The 2 species are sometimes found together in the same sample ( Hopkin, 2007).

Acknowledgments

We are grateful to Hamid Veisi, Ehsan Shahbazi, and Saeed Shavali for field sampling. This study was supported by a research grant from Sari University of Agricultural Sciences and Natural Resources (No. 01-1394-01).

Figures

Figure 3. Isotoma anglicana (a): General characters; (b): With 8+8 Ommatidia;(c): Mucro tridentate; (d): 2 pairs of manubrial teeth.