Checklist of the Collembola: Key to the genera of Entomobryinae | ![]() |
This key is still under construction. Note that missing figures will be provided as soon as possible. Currently, the key is in the feasibility study phase to find out how to integrate in the checklist in a modular way a key that has been generated with DELTA.
Peter F. Bellinger (),
Department of Biology, California State University, Northridge, CA 91330, USA
Kenneth A. Christiansen,
Department of Biology, Grinnell College, PO Box V3, Grinnell, IA 50112-0806, USA
Penelope Greenslade,
Biosecurity Australia, Barton, ACT 2601, Australia
Nikolas Gioia Cipola,
Laboratório de Sistemática e Ecologia de Invertebrados do Solo, Instituto Nacional de Pesquisas da Amazônia, CEP 69011-970, Manaus, Brazil
José Wellington de Morais,
Laboratório de Sistemática e Ecologia de Invertebrados do Solo, Instituto Nacional de Pesquisas da Amazônia, CEP 69011-970, Manaus, Brazil
Bruno Cavalcante Bellini,
Centro de Biociências, Universidade Federal do Rio Grande do Norte, 59072-970 Natal, Brazil
Frans Janssens,
Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium
1(0). Body scales absent; dental spines absent.................... 2 Body scales present 2; dental spines present (fig.1)........ 14 |
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2(1). Head with 6 + 6 or fewer eyes............................... 3 Head with 8 + 8 eyes........................................ 4 |
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3(2). Furca with bidentate mucro (fig.2c).................. Sinella Furca with falcate mucro (fig.2a).................. Coecobrya |
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4(2). First antennal segment not subdivided....................... 5 First antennal segment subdivided................. Mesentotoma |
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5(4). Mucro bidentate (fig.2c)................................... 6 Mucro falcate (fig.2a&b).................................. 11 |
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6(5). Intersegmental membranes with many microsetae (fig.3)........ ............................................... Marginobrya Intersegmental membranes without microsetae................. 7 |
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7(6). Dental spines absent........................................ 8 Dental spines present at basis (fig.4)............... Homidia |
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8(7). Body setae flattened, scale like (fig.5).......... Himalanura Body setae not flattened.................................... 9 |
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9(8). Antenna usually with apical bulb; inner tibiotarsal setae with all setae similar (fig.6b).............................. 10 Antenna without apical bulb; inner tibiotarsal setae with some setae apparently much more finely ciliate than others (fig.6a).................................... Entomobryoides |
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10(9). Mucronal basal spine absent (fig.7a)............. Mesentotoma 1 Mucronal basal spine present (fig.7b)............. Entomobrya |
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11(5). Lasiotrichia or large macrochaetae bases absent on anterior margin of thorax............................... Prodrepanura Lasiotrichia or large macrochaetae bases present on anterior margin of thorax......................................... 12 |
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12(11). Mucronal basal spine absent (fig.2b)...................... 13 Mucronal basal spine present (fig.2a).............. Drepanura |
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13(12). Claw with four inner teeth............................... Calx Claw with one or two inner teeth.................... Isotobrya |
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14(1). Dental scales absent....................................... 15 Dental scales present........................... Acanthocyrtus |
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15(14). Anterior central region of fourth abdominal segment with one transverse row of macrochaetae; prelabral chaetae smooth simple; ventral cephalic groove without scale-like chaetae.. ................................................ Sinhomidia Anterior central region of fourth abdominal segment with two transverse rows of macrochaetae; prelabral chaetae bifurcate (fig.8); ventral cephalic groove with scale-like chaetae (fig.9)....................................... Amazhomidia |
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Endnotes
1 Mesentotoma specimens without subdivided first antennal segment.
2 The scaled Entomobryinae of the Lepidosira-group : Epimetrura, Lepidocyrtoides, and Lepidosira are conservatively placed in Willowiinae.
Acanthocyrtus
Body scales present$note2. Dental scales present.
Dental spines present (fig.1).
Amazhomidia
Anterior central region of fourth abdominal segment
with two transverse rows of macrochaetae. Body scales present$note2. Dental
scales absent. Dental spines present (fig.1). Prelabral chaetae bifurcate
(fig.8). Ventral cephalic groove with scale-like chaetae (fig.9).
Calx
Body scales absent. Claw with four inner teeth. Dental
spines absent. First antennal segment not subdivided. Head with 8 + 8 eyes.
Lasiotrichia or large macrochaetae bases present on anterior margin of thorax.
Mucro falcate (fig.2a&b). Mucronal basal spine absent (fig.2b).
Coecobrya
Body scales absent. Dental spines absent. Furca with
falcate mucro (fig.2a). Head with 6 + 6 or fewer eyes.
Drepanura
Body scales absent. Dental spines absent. First
antennal segment not subdivided. Head with 8 + 8 eyes. Lasiotrichia or large
macrochaetae bases present on anterior margin of thorax. Mucro falcate
(fig.2a&b). Mucronal basal spine present (fig.2a).
Entomobrya
Antenna usually with apical bulb. Body scales absent.
Body setae not flattened. Dental spines absent. Dental spines absent. First
antennal segment not subdivided. Head with 8 + 8 eyes. Inner tibiotarsal setae
with all setae similar (fig.6b). Intersegmental membranes without microsetae.
Mucro bidentate (fig.2c). Mucronal basal spine present (fig.7b).
Entomobryoides
Antenna without apical bulb. Body scales absent.
Body setae not flattened. Dental spines absent. Dental spines absent. First
antennal segment not subdivided. Head with 8 + 8 eyes. Inner tibiotarsal setae
with some setae apparently much more finely ciliate than others (fig.6a).
Intersegmental membranes without microsetae. Mucro bidentate (fig.2c).
Himalanura
Body scales absent. Body setae flattened, scale like
(fig.5). Dental spines absent. Dental spines absent. First antennal segment
not subdivided. Head with 8 + 8 eyes. Intersegmental membranes without
microsetae. Mucro bidentate (fig.2c).
Homidia
Body scales absent. Dental spines absent. Dental spines
present at basis (fig.4). First antennal segment not subdivided. Head with 8
+ 8 eyes. Intersegmental membranes without microsetae. Mucro bidentate
(fig.2c).
Isotobrya
Body scales absent. Claw with one or two inner teeth.
Dental spines absent. First antennal segment not subdivided. Head with 8 + 8
eyes. Lasiotrichia or large macrochaetae bases present on anterior margin of
thorax. Mucro falcate (fig.2a&b). Mucronal basal spine absent (fig.2b).
Marginobrya
Body scales absent. Dental spines absent. First
antennal segment not subdivided. Head with 8 + 8 eyes. Intersegmental
membranes with many microsetae (fig.3). Mucro bidentate (fig.2c).
Mesentotoma
Body scales absent. Dental spines absent. First
antennal segment subdivided. Head with 8 + 8 eyes.
Mesentotoma 1
Antenna usually with apical bulb. Body scales
absent. Body setae not flattened. Dental spines absent. Dental spines absent.
First antennal segment not subdivided. Head with 8 + 8 eyes. Inner tibiotarsal
setae with all setae similar (fig.6b). Intersegmental membranes without
microsetae. Mucro bidentate (fig.2c). Mucronal basal spine absent (fig.7a).
Prodrepanura
Body scales absent. Dental spines absent. First
antennal segment not subdivided. Head with 8 + 8 eyes. Lasiotrichia or large
macrochaetae bases absent on anterior margin of thorax. Mucro falcate
(fig.2a&b).
Sinella
Body scales absent. Dental spines absent. Furca with
bidentate mucro (fig.2c). Head with 6 + 6 or fewer eyes.
Sinhomidia
Anterior central region of fourth abdominal segment
with one transverse row of macrochaetae. Body scales present$note2. Dental
scales absent. Dental spines present (fig.1). Prelabral chaetae smooth
simple. Ventral cephalic groove without scale-like chaetae.