Neotropical Allocladius Kieffer, 1913 and Pseudosmittia Edwards, 1932 (Diptera: Chironomidae) 2472
Author
Andersen, Trond
Author
Saether, Ole A.
Author
Mendes, Humberto F.
text
Zootaxa
2010
2010-05-14
2472
1
1
77
https://biotaxa.org/Zootaxa/article/view/zootaxa.2472.1.1
journal article
10.11646/zootaxa.2472.1.1
11755334
6507307
Pseudosmittia tropis
sp. n.
(
Figs 181–187
)
Pseudosmittia
sp. 5
Pinho
et al.
(2009: 164)
.
Type material.
Holotype
male,
ECUADOR
:
Pastaza Province
,
Puyo
,
Terminal Terrestre
,
950 m
a.s.l.
,
11.ii.1997
,
J. Skartveit
(
ZMBN
Type No.
427)
.
Paratypes
:
7 males
,
BRAZIL
:
São Paulo State
,
Cajuru
, Fazenda
Rio Grande
,
21º12'S
,
47º09'W
, 2–18.xiii.1999,
Malaise trap
(white),
G. Melo
&
F. Nascimento
(
MZUSP
,
ZMBN
)
;
1 male
,
Estação Ecológica Juréia-Itatins
,
Peruíbe
,
24º31'06''S
,
47º12'06''W
,
6.v.2002
,
Malaise trap
(
Trilha
6),
N.W. Perioto
et al.
(PEJU19: BIOTA-FAPESP) (
ZMBN
)
.
1male
,
Rio de Janeiro State
,
Reserva Biológia Tinguá
,
Nova Iguaçu
,
22º34'32''S
,
43º26'07.6''W
,
8–11.iii.2002
,
Malaise trap
(
Bosque
3),
S.T.P. Amarante
et al.
(BRTIN18: BIOTA-FAPESP) (
ZMBN
)
.
1 male
,
Amazonas State
,
Manaus
,
Reserva Soka Gakkai
(lago),
12–14.ii.2008
,
Pennsylvania trap
,
N. Hamada
et al
. (
INPA
)
.
Diagnostic characters.
The species differs from other members of the genus except
P. lamellata
sp. n.
by having a long virga with lateral lamellae. It differs from
P. lamellata
by having a long gonostylus with outer corner.
Etymology.
From Latin,
tropis
, keel, referring to the large crista dorsalis.
Male
(n = 7–9, except when otherwise stated). Total length 1.09–1.56,
1.29 mm
. Wing length 0.61–0.82,
0.72 mm
. Total length / wing length 1.70–1.90, 1.80. Wing length / length of profemur 2.79–3.35, 3.04 (4).
Coloration.
Brown.
Head.
Ultimate flagellomeres 11–13 partially fused; when considered with 13 flagellomeres AR 0.58– 0.92, 0.77; ultimate flagellomere 158–272, 212 µm long; when considered with 11 flagellomeres AR 0.89– 1.29 (2); ultimate flagellomere 209–299 (2) µm long. Temporal setae 1–5, 3; consisting of 0–3, 2 inner verticals and 1–3, 2 outer verticals. Clypeus with 4–6, 5 setae. Tentorium, stipes and cibarial pump as in
Figure 181
. Tentorium 79–102, 86 µm long; 9–18, 11 µm wide. Stipes 60–73 (3) µm long, 23 (1) µm wide. Palpomere (
Fig. 182
) lengths (in µm): 9–15, 12; 14–23, 18; 26–32, 28; 16–30, 25; 23–45, 39. Third palpomere with 4–7, 6 lanceolate sensilla clavata; longest 10–14, 11 (5) µm long.
Thorax
(
Fig. 183
). Median antepronotal lobes reduced; antepronotum with 0–2, 1 lateral seta. Dorsocentrals 3–6, 5; acrostichals 2; prealars 1–4, 2; supraalar absent. Scutellum with 2–4, 2 setae.
Wing
(
Fig. 184
). VR 1.71–1.86, 1.80 (6). Anal lobe absent. Cu
1
weakly curved. R
4+5
ending proximal to apex of Cu
1
.
Costa
not extended. Brachiolum with 1–2, 1 seta, other veins bare.
FIGURES 181–187.
Pseudosmittia tropis
sp. n.
,
male.
181
–tentorium, stipes, and cibarial pump;
182
–palp;
183
–thorax;
184
–wing;
185
–hypopygium, dorsal aspect;
186
–hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right;
187
–gonostylus.
Legs
. Spur of fore tibia 24–31, 27 (5) µm long; spurs of mid tibia 10–15, 12 (6) µm and 9–11, 10 (6) µm long; of hind tibia 20–33, 28 µm and 10–16, 13 µm long. Width at apex of fore tibia 14–18, 17 µm; of mid tibia 15–19, 17 µm; of hind tibia 20–26, 23 µm. Comb with 10–12, 11 setae; longest 23–29, 26 µm long; shortest 11–18, 13 µm long. Length and proportions of legs as in
Table 24
.
TABLE 24.
Length (in µm) and proportions of legs of
Pseudosmittia tropis
sp. n.
, male (n = 1–2).
fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
p1 |
246–248 |
281–302 |
122–142 |
43–61 |
32–42 |
22–28 |
p2 |
266–312 |
288–340 |
151–161 |
68–85 |
50–57 |
25–38 |
p3 |
290–302 |
310–321 |
166–184 |
76–90 |
76–85 |
29–38 |
ta5 |
LR |
BV |
SV |
BR |
p1 |
22–28 |
0.43–0.47 |
4.17–5.49 |
3.87–4.32 |
2.6 |
p2 |
25–28 |
0.47–0.52 |
3.91–4.26 |
3.67–4.06 |
– |
p3 |
22–28 |
0.53–0.57 |
3.35–3.79 |
3.38–3.62 |
3.2 |
Hypopygium
(
Figs 185–187
) (n = 11). Anal point 14–26, 17 µm long; 7–12, 8 µm wide at base, with 4–6, 4 weak setae. Tergite IX with 2–7, 5 additional weak setae. Laterosternite IX with 2–3, 2 setae. Phallapodeme 43–55, 49 µm long. Sternapodeme evenly rounded without oral projections, arched part about 38–55, 48 µm long. Virga consisting of 2 spines, 36–48, 42 µm long; with lateral lamellae. Gonocoxite 75–100, 91 µm long. Superior volsella, if regarded as present, consisting of bulge of inner margin of gonocoxite. Inferior volsella weak, adpressed, reaching to 0.62 of gonocoxite length. Gonostylus 39–50, 43 µm long, with outer corner produced, with large, bluntly triangular apical crista dorsalis; megaseta 3–6, 4 µm long. HR 1.83–2.50, 2.12. HV 2.54–3.29, 3.01 (9).
Distribution and biology.
Taken in
Ecuador
and in
São Paulo
,
Rio de Janeiro
and Amazonas States in
Brazil
. In
Brazil
it was collected in Malaise traps in lowland areas with fragmented Mata Atlântica forest in
São Paulo
and
Rio de Janeiro
States, as well as in a Pennsylvania trap in the Amazon forest in Amazonas State. In
Ecuador
it was netted in herbaceous vegetation at about
950 m
altitude near the bus terminal in Puyo.