A new species of Deutonura (Collembola: Neanuridae: Neanurinae) from Algeria, with revised diagnosis of the genus and key to western Palaearctic species
Author
Deharveng, Louis
Author
Mouloud, Salah Ait
Author
Bedos, Anne
text
Zootaxa
2015
4000
4
464
472
journal article
10.11646/zootaxa.4000.4.5
602adb17-b59d-4304-bbd9-760e268c7313
1175-5326
240772
276D54CE-2D01-48D4-9A4B-8190A71246BA
Deutonura
Cassagnau, 1979
Generotype:
Achorutes phlegraeus
(
Caroli, 1912
)
sensu
Gama, 1964
.
Deutonura
was proposed and characterised by Cassagnau in 1979 as a subgenus of
Neanura
in a seminal work on the taxonomy of
Neanuridae
. Subsequently, one species originally placed in the subgenus,
Neanura (Deutonura) austriaca
Gama, 1963
was transferred to the new genus
Sensillanura
Deharveng, 1981
. Later
Deharveng (1982a)
upgraded the subgenus to generic level, and three of its species were transferred to two new genera (
Deharveng 1982b
):
N. (D.) nana
Cassagnau & Péja, 1979
to
Albanura
Deharveng, 1982
, and
N. (D.) catalana
Deharveng, 1979
and
N. (D.) najtae
Deharveng, 1979
to
Catalanura
Deharveng, 1982
. However, Deharveng did not update the diagnosis of the genus
Deutonura
at that time. Meanwhile, progress in the taxonomy of
Neanurinae
detected new morphological characters useful for generic characterisation. Here we integrate the changes in the new diagnosis given below.
Diagnosis of
Deutonura
.
Body colour blue to grey or white, yellow in
D. centralis
(
Gama, 1964
)
. Eyes 2+2, usually pigmented, rarely absent. Abdominal segments subequal in length. Mouthparts reduced, maxilla styliform, mandible tridentate (dubiously bidentate in
D. igilica
Dallai, 1983
). Labium without x-papillae. Labral formula 2,4 when recorded (with one exception –
D. conjuncta
(
Stach, 1926
)
has 0, 4;
Smolis 2008b
). Chaetotaxy of body and appendages not polychaetotic. Dorsal macrochaetae thickened, always differentiated and more or less densely serrated, never ciliated. Macrochaetae
Di
1 long and usually curved on Abd. V. All dorsal tubercles developed on head. Antennal and frontal tubercles never individualised, grouped in a tubercle AF. Tubercle AF never fused with both CL and Oc in the central area of head. Tubercles
Di
and
De
fused on head. Line
Di
1-
De
1 not crossed by line
Di
2-
De
2 on posterior area of head. Chaetae A, B, C,
O
when present always included in the antenno-frontal tubercle. All tubercles (
Di
,
De
, DL, L) differentiated and independent on post-cephalic segments from Th. I to Abd. III. Tubercle
Di
fused on axis on Abd. V and rarely on Abd. IV, but never fused with
De
. Furcal remnant without microchaetae except in
D. yoshiiana
and in
D. conjuncta (
Smolis 2008b
)
(unknown in several species). More or less developed cryptopygy in many species. Abd. VI bilobed.