Biogeographical and ecological insights from Australasian faunas: the megadiverse collembolan genus, Entomobrya (Entomobryidae)
Author
Jordana, Rafael
Author
Greenslade, Penelope
text
Zootaxa
2020
2020-05-06
4770
1
1
104
journal article
22349
10.11646/zootaxa.4770.1.1
6b7e3a53-0658-4628-bfb6-9f39f0b34c99
1175-5326
3797958
39F2F040-E300-4065-9E8E-83A9D6286D1F
Entomobrya multifasciata
(
Tullberg, 1871
)
Brook, 1884
(
Figs 2J
,
5D
,
27
A–D)
Degeeria multifasciata
Tullberg, 1871
Entomobrya multifasciata
,
Brook 1884
Entomobrya nicoleti
var.
multifasciata
,
Börner 1901
Entomobrya aurantiaca
Stach, 1922
Entomobrya multifasciata
f.
nigra
Uchida, 1954
Type
locality.
Sweden
Material examined
.
SAMA
: male, ACT,
Constitution Ave
,
Russell
,
Canberra
, -
35.296°S
,
149.150°E
,
578m
asl
,
pitfall
site 5,
1–5.iv.1991
,
J. Dorrow
leg.
;
NSW
,
Armidale
,
Chiswick
farm, nr
Armidale
, -
32°S
,
147°E
,
980m
asl
, pasture, grassland,
September 1973
, KK leg.;
6 specimen
male;
NSW
,
Legume
, -
28.40472°S
,
152.30758°S
,
583m
asl
open area in woodland,
20.ix.1974
, JG leg.;
3 specimens
female,
NSW
,
Armidale
, -
32°S
,
147°E
,
980m
asl
; female
Juvenile
,
NSW
,
Arawana Headland
, -
30.065°S
,
153.200°E
,
5m
asl
in sea weed on beach,
11.i.1974
; female
NSW
Richmond
, -
33.600°S
,
150.750°E
,
19 m
asl
, grass in garden,
31.xii.1975
;
4 specimens
,
NSW
,
Armidale
, -
32°S
,
147°E
,
980m
asl
; female
,
QLD
,, nr
Leslie Dam
, -
28.21°S
,
151.97°E
, sweeping,
13.05.1974
, PG leg.; female
QLD
,
Brisbane
, -
27.469°S
,
153.025°E
,
22m
asl
, in irrigated pasture
8.ix.1933
; female
SA
,
Waite Institute
,
Urrbrae
, -
34.967°S
,
138.636°E
,
118 m
asl
, sub clover,
July 1930
, 24,viii.31, HW leg.; female
SA
,
Cambrai
, -
34.663°S
,
139.321°E
,
305m
asl
,, bracken,
March
, 1972, PG leg.; female
SA
,
Andamooka
, -
30.453°S
,
137.164°E
,
76m
asl
, 2.iv.72
;
SA
,
Belair
, 1.2
ii.1976
, PG leg.;
Belair
, -
35.007°S
,
138.633°E
,
300m
asl
;
2 female
and male, juvenile,
SA
,
Glen Osmond
, -
34.960°S
,
138.650°E
,
300m
asl
,
1.ix.1974
; female
,
SA
,
Mitcham
, -
34.987°S
,
138.625°E
,
62m
asl
, garden soil, 21.xi.85
,
R
.
V
.
Southcott
leg.;
1male
,
1female
,
SA
,
Hindmarsh Island
,
Lane’s
property, -
35.533°S
,
138.86°E
,
25m
asl
,
pitfalls
,
4.x.2013
, PG GH leg.; male
SA
,
Hindmarsh Island
,
Anne’s
property, young,
4.x.2013
, PG GH leg.; -
35.516°S
,
138.866°E
,
25m
asl
,
5.x.2013
, PG GH leg.;
Juvenile
.
SA
,
Glen Osmond
, stray in funnels in laboratory, -
34.960°S
,
138.650°E
,
300m
asl
, and -
35.533°S
,
138.86°E
,
25m
asl
; male
SA
,
Hindmarsh Island
,
Hill’s
property, -
35.516°S
,
138.866°E
,
25m
asl
; female TAS,
New Town
,
Hobart
, -
42.859°S
,
147.305°E
,
49m
asl
, 3.ix.32; juvenile, same location in
Tasmania
, 3.ix.32; juvenile,
1 male
,
1female
,
WA,
Mundijong
, -
32.284°S
,
115.973°E
,
42m
asl
, 25.vi.98, PG leg.;
3 specimens
-
34.9600°S
,
138.6502°E
,
300m
asl PG leg.
Redescription based on Australian material.
Size. Length up to
0.9 mm
excluding antennae (n=7).
Colour. Pattern as in
Fig 2J
, some colour variations shown.
Head. Antennal length 847–1020 μm, 2–3 times the length of the head; Ant IV with a bilobed apical vesicle. Relative lengths of Ant I/II/III/IV=1.0/2.1/1.9/2.6. Four spinulate labral papillae or with some projections, four ciliated prelabral chaetae and 5,5,4 labral smooth chaetae. Lateral process of papilla E reaching at the papilla tip. Labial posterior row with MREL
1
L
2
, R smaller than M; eight eyes, G and H similar in size to E and F.
Thorax and abdomen. Ratio of lengths of Abd IV/III=4 (n= 7). Trochanteral organ near of 22 chaetae. Unguis with 4 teeth on internal edge: first pair at 50% distance from base of unguis, and 2 unpaired teeth, first one at 75% from the base and the most distal one minute. Dorsal tooth approximately at half distance between the base of unguis and internal pair of teeth. Unguiculus spike–like, with a smooth or external edge on leg III. Furcal length 636 μm (n=7). Manubrial plate with 4 chaetae and 2 psp. Mucro with 2 teeth, subapical tooth in size similar to the apical one. Mucronal spine present.
Macrochaetotaxy. Simplified formula: 3,1,0,3,2/2,3/2,2/1,2,1/0,2,3,2,2. Head chaetotaxy with H1 area with An
2
, An
3a1
and An
3
, and as in
Fig. 27A, H
2
with A
5
, S’
0
Mc no present; H4 with S
1
, S
3
and S
4i
Mc, H5 with Ps2 and Ps5. Thoracic chaetotaxy Area T1 on Th II with 2 Mc (m
1
and m
2i
or m
2
present) (
Fig. 27B
). Area T2 on Th II with 3 Mc present (a
5
, m
4
and m4i). Abdominal chaetotaxy Area A1 on Abd II with 2 Mc as in Fig. 85 and area A2 on Abd II with 2 Mc. Abd III with 1 Mc on areas A3 and A5, 2 Mc on area A4 as in
Fig. 27C
. Abd IV with 18 Mc (A
3
–A
6
, B
4
–B
6
, E
1
and C
2a
) sometimes a variation on Area A7 on Abd IV 1–3 Mc. (
Fig 27D
). Sensillary chaetotaxy S =21/02293 and Ms =10/101, similar position to
E. nigrocincta
.
Remarks.
The characteristic colour may fade and only remain on the anterior part of Th II and on a distal part of the body. The only difference from the European
E. multifasciata
(cf.
Jordana, 2012
) is the presence of 3 Mc on H
4 in
the head, but some Australian specimens are asymmetric in this character.
FIGURE 27.
Entomobrya multifasciata
Line
drawings A–D: A, head chaetotaxy; B, Th II chaetotaxy; C, Abd II–III chaetotaxy; D, Abd IV chaetotaxy. Bar=0.05 mm. Open circles mean unstable Mc.
This introduced species is the most widespread and abundant species of the genus in
Australia
. It has been misidentified as
E. tenuicauda
previously and with females of
E. nigrocincta
because of a similar colour. It is rarely found in native vegetation and nearly always in improved exotic grasses in pasture and on other open disturbed land.