Review of Lepidocyrtinus Börner, 1903 (Collembola, Entomobryidae, Seirinae): the African species
Author
Cipola, Nikolas Gioia
Author
Morais, José Wellington De
0000-0003-3801-7054
moraisjw@gmail.com
Author
Bellini, Bruno Cavalcante
0000-0001-7881-9436
entobellini@gmail.com
text
Zootaxa
2020
2020-12-24
4898
1
1
110
journal article
9066
10.11646/zootaxa.4898.1.1
9e4030d6-1154-422f-bb13-afd31181028f
1175-5326
4392515
3F66CE1D-1036-4226-BC28-029F9961E069
Lepidocyrtinus barnardi
Womersley, 1934
Figs 2
,
13–17
,
Tables 1
and
4
Lepidocyrtinus cooperi
var.
barnardi
Womersley, 1934: 461
, fig. 10,
South Africa
,
Cape
Town, Kirstenbosch, not examined.
Seira
(
Lepidocyrtinus
)
barnardi
;
Yosii 1959: 12
, figs 6A–I,
South Africa
,
Cape
Town, Kirstenbosch.
Seira barnardi
;
Coates 1968: 454
;
Janion-Scheepers
et al.
2015: 68
, Africa South (catalog).
Typological note.
One cotype of four specimens used in the original description of
Lepidocyrtinus cooperi
var.
barnardi
by
Womersley (1934)
is deposited at SAM/IZIKO (Scheepers, personal communication). We could not analyse this material, but our specimens fit the descriptions of
Womersley (1934)
and
Yosii (1959)
and they were collected from the
type
locality (
Fig. 2
). For this reason, the redescription is justified.
Examined material.
1 male
and
4 females
in slides and
1 specimen
in alcohol (
INPA
):
South Africa
,
Cape
Town
,
Table Mountain National Park
,
Newlands
,
33°57’51.9”S
,
18°26’25.1”E
(
Fig. 2
), in Pine Plantation,
200 m
,
12.ix.2008
,
Leaf Litter, C Uys
coll.
3 females
in slides and
170 specimens
in alcohol (
CC
/
UFRN
):
33°57’58.3”S
,
18°26’31.6”E
, in
Afrotemperate Forest
,
230 m
,
15.i.2009
,
Sugar-baited Ant Trap, C Uys
coll.
23 specimens
in alcohol (
INPA
):
Spilhaus
,
Cecilia Ravine
,
33°59’53.7”S
,
18°24’51.6”E
, in Fynbos,
520 m
,
23.i.2009
,
Sugar-baited Ant Trap, C Uys
coll.
FIGURE 12A–E.
Lepidocyrtinus ryozoi
nom. nov.
(modified from
Yosii 1959
);
A
, chaetotaxy of Th II to Abd II (left side);
B
, chaetotaxy of Abd IV (left side);
C
, distal tibiotarsus and empodial complex III;
D
, chaetotaxy of the manubrial plate and proximal dens (dorso-lateral view);
E
, distal dens and mucro (lateral view).
Diagnosis.
Body with dark blue pigments on Ant III–IV, Th II laterally up to one transverse band on Abd III, and spots on Abd IV–V and legs (
Fig. 13
); head mac
A0
,
A2–3
,
A5
,
M1–2
,
M4i
,
S0–6
and
Pp5
present; prelabral chaetae smooth; labial papilla E with l.p. apically pointed and not reaching the base of a.a. (
Figs 14
D–F); basolateral and basomedian labial fields with chaetae
R
(smaller than others) ciliated,
e
and
l2
smooth,
L1
ciliated or smooth; Th II not projected anteriorly and with 17 anterior, 9 median (
m1ip
,
m4i–4p
present) and 15–16 posterior mac (
p2ep
,
p2ep2
,
p3
as mac); Th III–Abd II with 10, 5–6, 4 central mac respectively; Abd IV with 10–11 central mac and 11 lateral mac (
Figs 15
,
16B
); unguis a.t. present or absent; unguiculus with
pe
lamella serrated and with small proximal tooth; collophore anteriorly with 4–5 spine-like chaetae and 4 ciliated chaetae apically acuminate, posteriorly without spines, smooth chaeta present (
Fig. 17E
); manubrium ventrally with 2/2 subapical chaetae; manubrial plate without blunt mac; dens with with 13–19 blunt mac apically nipple-like (
Figs 17
F–G).
FIGURE 13.
Lepidocyrtinus barnardi
, habitus of a specimen fixed in alcohol (lateral view). Scale bars: 1 mm.
Description.
Total length (head + trunk) of specimens 2.21–3.22 (n=4). Specimens pale white with dark blue pigment on distal Ant II to Ant IV, anterior head, lateral Th II to Abd II which extends to most of the Abd III, central spots on Abd IV and V, coxa II–III, and trochanter to proximal half of tibiotarsus; eyepatches black (
Fig. 13
). Scales present on Ant I to basis of Ant III, dorsal and ventral head, dorsal thorax and abdomen, legs (except empodia), anterior collophore, ventral and dorsal manubrium and dens ventrally.
Head. Antennae subequal to trunk length (
Fig. 13
); ratio antennae: trunk = 1: 1.04; antennal segments ratio as I: II: III: IV = 1: 1.57–1.82: 2.92–3.24: 2.97 (Ant IV present in one specimens). Ant IV annulated on distal one seventh, with apical bulb apically bilobed. Ant III annulated on distal two thirds, apical organ with 2 rods elongated, 3 spiny guard sens, s-blunt sens of different sizes and ciliated chaetae (
Fig. 14A
). Ant I dorsally with 3–4 median mac and 3 smooth mic at the base, without spines (
Fig. 14B
). Eyes A and B larger, G and H smaller, others subequal, and with 5 ‘IO’ chaetae; head dorsal macrochaetotaxy with 9–10
An
, 4
A
, 4
M
, 8
S
and 1
Pp
mac (
Fig. 14F
). Clypeal formula with 4 (
l1–2
), 8 (
ft
), 5 (
pf1–2
) ciliated chaetae,
l1–2
and
pf0–1
larger,
l1
apically acuminate, others subequal (
Fig. 14C
). Prelabral chaetae smooth, inner chaetae eventually with two small median filaments (
Fig. 14D
). Labral
p0
chaeta with median filament unequal in length. Labral inner and outer papillae rounded, not projected (as in
Fig. 19C
). Maxillary palp with smooth t.a. and b.c. weakly ciliated, thicker and 1.19 longer than t.a. Labial papilla E with l.p. apically pointed and not reaching the base of a.a. (
Fig. 14E
). Basolateral and basomedian labial fields with chaetae
M1–2
,
R
(smaller than others) ciliated,
e
and
l2
smooth,
L1
ciliated or smooth. Ventral head with about 25 ciliated chaetae, postlabial formula with 4 (
G1–4
), 2 (
H2
,
H4
), 3 (
J1–3
) chaetae, 5 thin posterior chaetae with different lengths, and 3 larger chaetae, 1 b.c. surrounding the cephalic groove (
Fig. 14G
).
FIGURE 14A–G.
Lepidocyrtinus barnardi
: head;
A
, Ant III apical organ (lateral view);
B
, left Ant I chaetotaxy (dorsal side);
C
, clypeus chaetotaxy;
D
, prelabral chaetotaxy;
E
, labial papillae E (right side), arrow indicates l.p.;
F
, dorsal chaetotaxy (left side);
G
, complete postlabial chaetotaxy (right side).
FIGURE 15A–D.
Lepidocyrtinus barnardi
: dorsal chaetotaxy;
A
, Th II;
B
, Th III;
C
, Abd I;
D
, Abd II.
FIGURE 16A–C.
Lepidocyrtinus barnardi
: dorsal chaetotaxy;
A
, Abd III,
B
, Abd IV;
C
, Abd V.
FIGURE 17A–G.
Lepidocyrtinus barnardi
;
A–C
, subcoxa I–III (outer side), respectively;
D
, trochanteral organ (inner side);
E
, collophore chaetotaxy (lateral view); arrows anteriorly and on lateral flap indicate chaetae present or absent;
F
, manubrium ventral chaetotaxy;
G
, chaetotaxy of the manubrial plate and proximal dens (lateral view).
Thorax chaetotaxy (
Figs 15
A–B). Th II not projected anteriorly,
a
,
m
and
p
series with 17, 9 and 15–16 mac, respectively. Th III
a
,
m
and
p
series with 4, 1 and 8 mac, respectively. Ratio Th II: III = 1.69–153: 1 (n=4).
Abdomen chaetotaxy (
Figs 15
C–D, 16A–C). Abd I
a
,
m
and
p
series with 0–1, 5 and 0 mac, respectively. Abd II
a
,
m
and
p
series with 1, 4 and 0 mac, respectively.
Abd
III
a
,
m
and
p
series with 0–1, 3 and 1 mac, respectively.
Abd
IV
with 10–11 central mac on
A–T
series and 11 lateral mac on
E–
Fe
series; at least 12 posterior sens (
ps
type
I, others
type
II
) and 11 posterior mes.
Abd
V
a
,
m
and
p
series with 1, 4 and 6 mac, respectively.
Ratio Abd
III
: IV = 1: 3.87–4.23 (n=4).
Legs. Subcoxa I with 5 chaetae and 3 psp; subcoxa II with an anterior row of 12 chaetae, posterior row of 7 chaetae, 1 posterior chaeta and 8 psp; subcoxa III with one row of 12 chaetae, 2 anterior chaetae and 2 posterior psp (
Figs 17
A–C). Trochanteral organ with about 94 spine-like chaetae (
Fig. 17D
). Tibiotarsus normal or subdivided on distal two thirds, outer side with 3 large chaetae apically acuminate, inner side with 8 mac weakly ciliated. Unguis with 3–4 inner teeth, b.t. smaller than m.t. in length, and a minute a.t., present or absent. Unguiculus with all lamellae smooth and acuminate, except
pe
serrated and with a small proximal tooth; ratio unguis: unguiculus = 1: 0.52. Tibiotarsal smooth chaeta 1.32 larger than unguiculus and tenent hair 0.88 smaller than unguis outer edge.
Collophore. Anterior side with 19–22 chaetae, 4–5 proximal spine-like chaetae, 1 thin and 7–9 normal ciliated chaetae, 4 ciliated chaetae apically acuminate and 3 mac distally; posterior side with 12 chaetae, 8 thin ciliated chaetae widely distributed and 3 ciliated and 1 smooth chaetae distally; lateral flap with about 42–44 chaetae, 4–5 smooth and 38–39 ciliated (
Fig. 17E
).
Furcula. Manubrium ventral formula with 0, 0, 0, 2/2 (subapical), 24–28 (apical) ciliated chaetae plus approximately 18 elongated apical scales per side (
Fig. 17F
); manubrial plate with 3 ciliated mac apically acuminate (no blunt), 11 ciliated chaetae of different sizes and 3 psp. Dens dorsally with one proximal row of 13–19 blunt mac finely ciliated and apically nipple-like (
Fig. 17G
).
Remarks.
Lepidocyrtinus barnardi
resembles
L. dayi
in Th II
normal (not projected anteriorly) and with anterior mac group sparce, prelabral chaetae mostly smooth, labral papillae rounded and discrete, dorsal chaetotaxy of Th II–III, and manubrial plate without blunt mac (
Tables 3–4
). However,
L. barnardi
differs from this species by color pattern with one transversal band on Abd III and one central spot on Abd IV, while in
L. dayi
most of the body is pigmented (
Figs 13
,
18
). They also differ in head by basomedian labial field with chaeta
e
smooth (ciliated in
L. dayi
), labial papilla E with l.p. not reaching the base of a.a. (surpassing the base in
L. dayi
), and dorsal chaetotaxy with
S4
mac and
Pa3
,
Pm3
and
Pp3
absent (opposite in
L. dayi
) (
Figs 14
E–F, 19D–E). In dorsal chaetotaxy they differ by Th III with 10 central and 3 lateral mac (11 and 2 respectively in
L. dayi
), Abd I generally with 6 central mac (
a2
present or absent,
m4
present) and Abd II with 4 central mac, while in
L. dayi
there are 5 central mac (
m4
absent) on Abd I and 3 central mac (
m3e
absent) on Abd II (
Figs 15
B–D, 20B–D). Other features that differ are: unguis a.t. often present (absent in
L. dayi
), manubrium ventral formula with 0, 0, 0, 2/2 chaetae (1, 2, 2, 0/
2 in
L. dayi
), and dens with 13–19 blunt mac (only
1 in
L. dayi
) (
Figs 17
F–G, 22F–G).