The genus Drepanura (Collembola: Entomobryidae) in Australia: descriptions of two new species and redescriptions of five known species
Author
Ma, Yitong
Author
Chun, Zhao
Author
Greenslade, Penelope
text
Zootaxa
2015
4058
3
373
387
journal article
39249
10.11646/zootaxa.4058.3.5
4a4c70f3-da7c-40bc-8d52-92b511ab2024
1175-5326
236271
24939C36-9D3B-44DF-B4B9-DCC8BC96E6A7
Drepanura citricola
Womersley, 1934
Figs 6−7
,
67−78
Material examined.
2 females
(topotypes), Western
Australia
, Pelican Point, Crawley, 31o 59’ 11.95” 115o 49’ 30.93”,
type
locality
June 2010
, collected by Penelope Greenslade. All deposited in
SAM
.
Description.
Body length up to
1.7mm
. Ground colour yellow; eyes patches and Ant. II −IV dark blue (
Fig. 6
); some specimens with blue pigment on dorsal side of abdomen, especially lateral margin (
Fig. 7
).
Antenna 0.54−0.67 times length of body. Ratio of Ant. I −IV as 1.0/2.0 − 2.1/1.7 − 2.0/2.2−2.3. Distal part of Ant. IV with many sensory chaetae and normal ciliate chaetae and an apical bulb (
Fig. 67
). Eyes 8+8, G and H smaller. Interocular chaetae as p, q, r, s, t, p chaeta larger than others. Dorsal cephalic chaetotaxy with 4 antennal (An1, An2, An3a1, An3), 2 median (M2, M4) and 7 sutural (S0, S2, S3, S4, S
4i
, S5, S
5i
) macrochaetae (
Fig. 68
). Basal chaetae of labium as M, R, E, L1, L2, all ciliate (
Fig. 69
).
Dorsal macrochaetae shown as in
Fig. 70
. Th. II with 3 (m1, m
2i
, m2) macrochaetae in Mm area and 4 (m
4i
, m4, m4p, a5) macrochaetae in Ms area. Th. III with 3 (a1, a2, a3) macrochaetae in Am area and 6 (a
4i
2, a
4i
, a4, a5, m
5i
, m5) macrochaetae in As area.
FIGURES 52−66.
Drepanura cinquilineata
Womersley, 1934: 52
, apex of Ant. IV; 53, dorsal chaetotaxy of head; 54, labrum; 55, labium; 56, chaetotaxy of Th. II −III; 57, trochanteral organ; 58, distal part of tibiotarsus; 59; foot complex; 60, chaetotaxy of Abd. I −III; 61, chaetotaxy of Abd. IV; 62, anterior face of ventral tube; 63, posterior face of ventral tube; 64, lateral flap of ventral tube; 65, plaque of manubrium; 66, mucro.
FIGURES 67−78.
Drepanura
citricola
Womersley, 1934: 67
, apex of Ant. IV; 68, dorsal chaetotaxy of head; 69, labium; 70, chaetotaxy of Th. II −III; 71, trochanteral organ; 72, foot complex; 73, chaetotaxy of Abd. I −III; 74, chaetotaxy of Abd. IV; 75, anterior face of ventral tube; 76, lateral flap of ventral tube; 77, plaque of manubrium; 78, mucro.
Trochanteral organ with 9−10 chaetae (
Fig. 71
). Inner differentiated tibiotarsal chaetae ciliate, the most distal one smooth. Tenent hair clavate, 1.3−1.4 × length of inner side of unguis; unguis with 4 inner teeth, paired teeth located at about 0.4 distance from base to claw, and 2 unpaired teeth, first one at 0.7 and distal one at 0.8 distance from base respectively, dorsal tooth present; unguiculus acuminate and outer edge serrate (
Fig. 72
).
Abd. IV 3.6−4.3 times as long as Abd. III along dorsal midline. Abd. I with 4(5) (m
2i
, m2, m3, m4, rarely a1) macrochaetae. Abd. II with 4 central (a2, a3, m3, m3e) and 1 lateral (m5) macrochaeta, Abd. III with 1 central (m3) and 3 lateral (am6, pm6, p6) macrochaetae (
Fig. 73
). Macrochaetae and bothriotricha of Abd. IV as shown in
Fig. 74
, lateral side with 13−14 macrochaetae on each side, central part with 18 macrochaetae. Ventral tube anteriorly with 10−11 ciliate chaetae on each side (
Fig. 75
); posteriorly not clearly seen; each lateral flap with 3 smooth chaetae and 6 ciliate chaetae (
Fig. 76
). Tenaculum with 1 large striate chaeta. Manubrial plaque with 3 ciliate chaetae and 2 pseudopores (
Fig. 77
). Distal smooth part of dens 2.6−3.6 times as long as mucro in length. Mucro falcate and tip of basal spine not reaching apex of apical tooth (
Fig. 78
).
Remarks.
The species can be easily distinguished from the other Australian species in the colour pattern, as nearly the whole body is a uniform yellow.
Type
locality.
Australia
: Perth.
Distribution.
Australia
: Queensland: Western
Australia
, Northern Territory.