A review of Antillocladius Saether, 1981; Compterosmittia Saether, 1981 and Litocladius new genus (Chironomidae, Orthocladiinae)
Author
Humberto F. Mendes
Author
Trond Andersen
Author
Ole A. Saether
text
Zootaxa
2004
594
1
82
journal article
38786
10.5281/zenodo.158827
811e894b-7f30-43b6-ae1b-8ccfb1aa19a7
1-877354-49-X
158827
F9E7D599-8EFC-48DD-BE9D-DFCD7A25B944
Antillocladius venequatoriensis
new species
(
Fig. 15
A–F)
Type
material:
Holotype
male,
VENEZUELA
: Aragua, Parque Nacional Henri Pittier, Rancho Grande,
10°21.047'N
,
67°41.198'W
,
16–18.ix.1999
, about
1000 m
a.s.l., sweep net & light trap, T. Andersen (
MIZA
, slide mounted in
Canada
balsam).
Paratypes
:
2 males
, as
holotype
(
ZMBN
); Aragua, Parque Nacional Henri Pittier, Curva Regressiva on road to Choroni,
5 males
,
23.ix.1999
,
1200 m
a.s.l., light trap, T. Andersen (
ZMBN
).
ECUADOR
: Provincia Pichincha, Setor Palmeras, unión Rios Guajalito y Bricador, Bosque Protector Rio Guajalito 0
0 14.925'N
,
78 48.193'W
,
1 male
,
4–10.ii.2000
,
1900 m
a.s.l., light trap. F.M. Quesada (
ZMBN
).
FIGURE 15.
Antillocladius venequatoriensis
new species
, male imago. A–cibarial pump, tentorium and stipes; B–thorax; C–wing; D–anal point and tergite IX and dorsal aspect of left gonocoxite; E–hypopygium with anal point and tergite IX removed, left dorsal aspect, right ventral aspect; F–gonostylus.
Diagnostic characters
: The male imago can be separated from other members of the genus by having numerous
setae
in apical half of wing membrane; setose squama; costa weakly extended; acrostichals starting in front, all scalpellate; long
virga
; anal point long, nearly triangular with pointed apex and moderately strong lateral
setae
; and inferior volsella relatively small and rounded.
Etymology:
The name refers to the countries where the species has been taken,
Venezuela
and
Ecuador
.
Male
(n = 6).
Total length 2.01–2.21,
2.15 mm
. Wing length 1.23–1.44,
1.36 mm
. Total length / wing length 1.54–1.63, 1.57. Wing length / length of profemur 2.30–2.42, 2.37. Coloration brown, thorax dark brown, tarsi of all legs light brown.
Head. AR 0.98–1.05, 1.01; ultimate flagellomere 526–572, 557 µm long. Temporal
setae
8–11, 9; including 2–5, 3 inner verticals; 2 outer verticals and 3–4, 4 postorbitals. Clypeus with 10
setae
. Tentorium, stipes and cibarial pump as in
Fig. 15
A; tentorium 125– 139, 131 µm long, 8–11, 9 µm wide at sieve pore; stipes 120–126, 122 µm long; 32–40, 36 µm wide. Palpomere lengths in µm: 22–25, 23; 35–38, 37; 90–96, 93; 85–97, 93 (4); 120– 135, 129 (4). Third palpomere with 3–4 sensilla clavata subapically; longest 10–15, 13 µm long.
Thorax (
Fig. 15
B). Antepronotum with 2–3, 3
setae
. Dorsocentrals 9–17, 13; acrostichals 9–14, 12, all scalpellate starting close to antepronotum; prealars 4–6, 5. Scutellum with 7–10, 8
setae
.
Wing (
Fig. 15
C). VR 1.37–1.61, 1.48. Costal extension 40–68, 54 µm long. Brachiolum with 1 seta; R with 11–15, 13
setae
; R1 with 11–14, 13; R4+5 with 20–27, 23; M with 4–7, 6; M1+2 with 40–56, 46; M3+4 with 16–26, 21; Cu1 with 9–12, 10; and An with 10–15, 12
setae
. Wing membrane with 122–163, 149
setae
in cell r4+5; 81–94, 87
setae
in m1+2; 39–43, 41
setae
in m3+4; and 15–25, 21 in cu and an together. Squama with 5–7, 6
setae
.
Legs. Spur of front tibia 45–52, 50 µm long; spurs of middle tibia 30–33, 31 µm and 29–33, 30 µm long; spurs of hind tibia 28 µm and 47–54, 51 µm long. Width at apex of front tibia 35 µm; of middle tibia 30–33, 32 µm; of hind tibia 38–40, 39 µm.
Hind
tibial comb with 12
setae
; shortest seta 18–25, 21 µm long; longest seta 27–38, 33 µm long. Lengths (in µm) and proportions of legs as in
Table 11
.
TABLE 11.
Lengths (in µm) and proportions of legs of
Antillocladius venequatoriensis
new species
.
fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
ta5 |
LR |
BV |
SV |
BR |
p1 |
526– 600, 564 |
568– 668, 624 |
508– 572, 539 |
260– 272, 269 |
166– 184, 177 |
60–112, 107 |
39– 56, 41 |
0.86– 0.91, 0.87 |
2.62– 2.91, 2.87 |
2.16– 2.22, 2.18 |
2.9–3.9, 3.3 |
p2 |
540– 644, 565 |
532– 636, 556 |
260– 300, 273 |
132– 156, 136 |
104– 125, 120 |
49–92, 87 |
40– 52, 48 |
0.47– 0.53, 0.51 |
3.95– 4.27, 4.07 |
3.96– 4.12, 4.05 |
3.4–4.3, 3.8 |
p3 |
624– 664, 645 |
673– 744, 683 |
388– 416, 390 |
212– 234, 224 |
156– 172, 161 |
78–92, 81 |
39– 56, 47 |
0.56– 0.58, 0.57 |
3.32– 3.35, 3.34 |
3.38– 3.42, 3.39 |
4.0–4.7, 4.4 |
Hypopygium (
Fig. 15
D–F). Anal point 58–63, 61 µm long; 40–44, 42 µm wide at base; with 15–27, 24 strong lateral
setae
; void of microtrichia except at base. Laterosternite IX with 3–6, 5
setae
. Phallapodeme 83–97, 88 µm long. Transverse sternapodeme arcuate, with rounded oral projections; 96–113, 104 µm long.
Virga
58–61, 59 µm long. Gonocoxite 163–168, 165 µm long; with long, low inferior volsella. Gonostylus 94–123, 101 µm long; megaseta 7–10, 8 µm long. HR 1.37–1.73, 1.62; HV 1.86–2.27, 2.15.