<p> <strong> Neotropical <em> Ablabesmyia </ em> Johannsen (Diptera: Chironomidae, Tanypodinae) – Part I </ strong> </ p>
Author
Oliveira, Caroline Silva Neubern De
csneubern@gmail.com
Author
Silva, Mário Antonio Navarro Da
Author
Gessner, Alaíde Aparecida Fonseca
text
Zootaxa
2013
2013-11-04
3733
1
1
123
http://dx.doi.org/10.11646/zootaxa.3733.1.1
journal article
10.11646/zootaxa.3733.1.1
1175-5326
5268657
EE758378-9459-4970-8D59-5258597A0E28
Ablabesmyia cinctipes
(Johannsen)
(
Figs 4–6
)
Pentaneura cinctipes
Johannsen, 1946: 271
(description, adult male)
Pentaneura
(
A.
)
cinctipes
Roback, 1959: 120
(in key)
Pentaneura
(
A.
)
cinctipes
Dendy & Sublette, 1959: 508
(in key)
Pentaneura cinctipes
Beck & Beck, 1959: 90
(distribution)
Ablabesmyia cinctipes
Sublette & Sublette, 1965: 148
(placement)
Ablabesmyia cinctipes
Beck & Beck, 1966: 323
(description of possible pupa)
Ablabesmyia cinctipes
Caldwell, 1993: 49
(description, immatures)
Type material.
Holotype
:
♂
,
United States
,
Miami
,
19.xii.1912
,
F. Knab
—
USNM
.
Paratypes
:
♂
, same data as holotype—
USNM
.
Material
examined
:
3 ♂♂
, same data as holotype—
USNM
;
3 ♂♂
,
Texas
,
Keyyville
, 49°40`90``W–32°77`90``S,
21.ix.1954
,
J.E. Sublette
—
USNM
;
3 ♂♂
with larval and pupal exuviae,
Georgia
,
Glynn County
, 49°81`00``W–
22°31`00``S
,
07.ii.1990
,
B.A. Caldwell
—private collection
Dr. Broughton A. Caldwell
;
♂
with larval and pupal exuviae, same previous data,
8.v.1990
, B.A. Caldwell—private collection Dr. Broughton A. Caldwell; larva, same previous data—private collection Dr. Broughton A. Caldwell;
2 pupae
, same previous data,
7.vi.1990
, B.A. Caldwell—private collection Dr. Broughton A. Caldwell; pupa with larval exuviae, same previous data,
30.i.1991
, B.A. Caldwell—private collection Dr. Broughton A. Caldwell; larva, same previous data,
20.ii.1992
, B.A. Caldwell—private collection Dr. Broughton A. Caldwell.
Diagnostic characters.
A. cinctipes
differs from other species by the combination of the following characters.
Male:
tibiae with 4 bands, m-cu before f-cu,
R
3
apex close to C, gonostylus with 9 apical teeth; tapered megaseta, dorsal lobe club-shaped with fringe, anal point covers partially the aedeagal complex;
Pupa:
veins and spots wing sheath present, aeropyle tube club-shaped apex, dorsal pore in A
IV
positioned between D
1
and D
3
, genital sac beyond the second taeniae;
Larva
: expanded head and without spots, ligula teeth concave, dorsal pore present, posterior parapod with 3 brown claws, procercus yellow and with 7 anal setae.
Male
(n = 5, unless otherwise stated):
Dimensions
: Total length
3.68–3.85 mm
. Wing length
1.90–2.10 mm
. Total length/wing length 1.81–2.03. Wing length/length of profemur 2.45–2.59.
Coloration
(
Figs 4A–F
,
5A
): wing with brown spots. Legs: P
I
—femur with 3 bands, tibia with 5 bands; P
II
— femur with 3 bands, tibia with 4 bands; P
III
—femur and tibia with 3 bands. Ratio of bands, related tibiae and tarsomeres
1
follow table 6. Hypopygium: gonocoxite apex and gonostylus base brown.
TABLE 6.
Ratio of bands, related tibiae and tarsomeres
1
of
A. cinctipes
, ♂, (n=5).
A/B |
LMB/LBCB |
Y/Z |
P I |
0.61–0.68 |
0.29–0.35 |
0,33–0.44 |
P II |
0.60–0.63 |
0.34–0.39 |
0.43–0.44 |
P III |
0.43–0.51 |
0.30–0.38 |
0.38–0.46 |
Head
: antenna with 14 flagellomeres, AR 1.77–1.85, apical flagellomere 118–120 µm long and subapical seta 45 µm long (n=1); temporals 50–53; clypeus bearing 43–48 setae, 113–115 µm long, 95–100 µm wide; labrum with 4 setae, 108–122 µm long and 63–68 µm wide; tentorium 175–195, µm long; cibarial pump 315–330 µm long orifice 55–60 from apex; palpomeres
1–5
: 58–63; 100–108; 128–155; 143–150; 87–135 µm long; palpomere
3
with sensilla capitata 35–38 µm from base.
FIGURES 4A–F.
Ablabesmyia cinctipes
(Johannsen)
: holotype, adult male. (A) Wing; (B) Thorax; (C) Geral view, (D–F) P1 (D), P2 (E), P3 (F).
FIGURES 5A–D.
Ablabesmyia cinctipes
(Johannsen)
: holotype, adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex.
FIGURES 6A–D.
Ablabesmyia cinctipes
(Johannsen)
: holotype, pupa. (A) Wing; (B) Thoracic horn; (C) Abdominal segments 1-5, with chaetotaxy of segment 4, right: ventral aspect, left: dorsal aspect; (D) Abdominal segments 6-8 and anal lobe with male genital sac, right: ventral aspect, left: dorsal aspect.
FIGURES 7A–D.
Ablabesmyia cinctipes
(Johannsen)
: holotype, larva. (A) Head with chaetotaxy, right: dorsal aspect, left: ventral aspect; (B) Maxillary palp; (C) Ligula, paraligula and pecten hypopharyngis; (D) posterior parapod.
Wing
(
Fig. 4A
): width/lenght 0.24–0.27; VR 0.76–0.82; C
0.78–1.89 mm
long; Sc
0.80–0.92 mm
long; m-cu 510–530 µm from arculus;
R
3
apex close to C; brachiolum with 4 setae; squama with 43 setae.
Thorax
(
Fig. 4B
): antepronotals 22–23; prealars 22–25; supraalars 1; scutelars 16–22.
Legs
(
Fig. 4D–F
): P
I
—apex of tibia 58–61 µm wide and with apical pectinated spur 53–65 µm long, spur ratio 0.48–0.59; tarsomeres with 1–2 pseudospurs 55–67 µm long. P
II
–apex of tibia 58–68 µm wide and with 2 apical pectinated spurs 60–67 and 48–55 µm long, spurs ratio 0.51–0.55 and 0.48–0.51; tarsomeres
1-3
with 3, 4 or 9 pseudospurs 50–60 µm long. P
III
—coxa with 5 central microsetae, apex of tibia 62.5–67 µm wide and with 2 apical pectinated spurs 70–73 and 50–60 µm long, spurs ratio 0.51–0.53 and 0.42–0.46; tarsomeres
1-3
with 1 or 2 pseudospurs 57–65 µm long. Lengths and proportions of leg segments table 7.
1-3
TABLE 7.
Lengths (in µm) and proportions of leg segments in
A. cinctipes
, ♂, (n=5).
fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
P I |
800–810 |
970–1063 |
700–820 |
480–550 |
345–410 |
230–270 |
P II |
880–920 |
960–1020 |
750–755 |
450–460 |
330–335 |
220–230 |
P III |
850–870 |
1172–1250 |
1000–1079 |
600–625 |
440–470 |
250–300 |
TABLE 7.
(Continued)
ta
5
LR BV SV
BR
P
I
135–150 0.72–0.77 1.95–2.08 2.28–2.53 2.7–3.6
P
II
140–145 0.74–0.78 2.27–2.31 2.45–2.57 2.6–3.0
P
III
150–170 0.85–0.88 2.02–2.15 1.93–2.02 2.7–3.2
Hypopygium
(
Fig. 5A–D
): tergite IX with 2 central setae; anal point covers partially the aedeagal complex; phallapodeme 43–45 µm long; sternapodeme 100–110 µm long; gonocoxite 150–170 µm long and 100–125 µm wide; gonostylus 152.5–173 µm long, with 9 apical teeth; tapered megaseta; HR 0.98; HV 2.16–2.57. Aedeagal complex: grooved aedeagal blade 45–51 µm long, base 10–13 µm wide, 9/10 6–8 µm width; dorsal lobe clubshaped with fringe, 15–16 µm long and base 18 µm wide; lateral lobe and basidorsal lobe present.
Female.
Unknown.
Pupa
(n = 3, unless otherwise stated)
Dimensions
: male abdomen 5.0–
5.6 mm
long.
Coloration
(
Fig. 6A–D
): exuviae brown; wing sheath with spots.
Cephalothorax
(
Fig. 6A, B
): wing sheath
1.71–1.89 mm
long and with completed veins; thoracic horn 412–555 µm long and 222–239 µm wide, with spines in basal and lateral sides; lumen with hexagonal pattern; apex of aeropyle tube club-shaped; thoracic comb with 15 conical teeth.
Abdomen
(
Fig. 6C, D
): tergites I–VIII with shagreen as small spines in arc; scar in A
I
220–230 µm long; A
IV
chaetotaxy follow figure 6C; A
VII
with 4 lateral setae,
LS
1
185–200 µm long; A
VIII
with 5 lateral setae,
LS
1
100–108 µm long; anal lobe 400–458 µm long, base 400 µm wide; with 2 anal macrosetae,
LS
1
151–162 µm long,
LS
2
215– 225 µm long, inner side spinulate; genital sac 371–380 µm long; GS/AL 0.72–0.89.
4th instar larva
(n = 3, unless otherwise stated)
Dimensions
: head capsule 945–950 µm long and 730–733 µm wide.
Coloration
(
Fig. 7A–D
): head capsule yellow without spots; postoccipital margin brown; ligula teeth brown; procercus yellow; posterior parapod with 13 claws, 3 hooked claws brown and 10 simple claws yellow.
Head Capsule
(
Fig. 7A–C
): head capsule expanded, IC 0.74–0.75, chaetotaxy follow the figure 7A; AR 4.58– 5.19, antennomeres
1,2-4
: 452–510, 95–111 µm long; ring organ in A
1
300 µm from the base; maxillary palp with 2 segments, palpomeres
1-2
: 46–56, 37–51 µm long; palpal formula 0+2, P
1
/P
2
1.10–1.24, A
1
/P
1
9.24, A
2
/P
1
1.67; mandible 147–200 µm long, with campaniform sensillum
37.5 mm
from the base, A
1
/
MD
2.51–3.53; dorsomental tooth
48 mm
long and far apart
55–61 mm
, pseudoradula slightly granulated and with homogeneous width; ligula
93–110 mm
long and
65 mm
wide, with 5 teeth in concave arch, It/O 0.95; Mt/O 0.70–0.94; It/Li 0.23; muscle attachment of ligula 39 µm long and
68 mm
wide; bifid paraligula 55 µm long, pectin hypopharyngis with 18 teeth.
Abdomen
(
Fig. 7D
): procercus 97–120 µm long and 35 µm wide, 7 anal setae 760µm long; supraanal seta simple and 500 µm long; supraanal seta lenght/ anal setae lenght 0.66; posterior parapods with 13 simple claws, with the serrated sides and 3 hooked claws with the smooth sides, tip of posterior parapods with spines.