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 paulista
sp. n.
(
Figs 160–166
)
Type material.
Holotype
male,
BRAZIL
:
São Paulo State
,
Estação Ecológica Juréia-Itatins
,
Peruíbe
,
24º31'06''S
,
47º12'06''W
,
3.v.2002
,
Malaise trap
(Trilha 1),
N.W. Perioto
et al.
(PEJU17: BIOTA-FAPESP) (
MZUSP
)
.
Paratype
:
1 male
, same as
holotype
(
ZMBN
)
.
Diagnostic characters.
The species differs from other Neotropical members of the genus by having palpomeres not reduced, third palpomere with 13–14 sensilla clavata, R
4+5
ending distal to apex of M
3+4
, anal point narrowly triangular with conspicuous microtrichia and penis cavity sclerotized.
Etymology.
From Portuguese,
paulista
, meaning native from
São Paulo State
, referring to the State where the specimens were collected. The name is to be treated as a noun in apposition.
Male
(n = 1–2). Total length
1.57–1.59 mm
. Wing length
0.86–0.88 mm
. Total length / wing length 1.82. Wing length / length of profemur 2.88–2.94.
Coloration.
Thorax and abdomen brown, legs pale brown.
Head.
AR 1.22–1.23, ultimate flagellomere 320–346 µm long. Temporal setae 6, including 4 inner verticals and 2 outer verticals. Clypeus with 8–9 setae. Tentorium, stipes and cibarial pump as in
Figure 160
. Tentorium 73–86 µm long, 14–16 µm wide; stipes 49–91 µm long. Palpomere (
Fig. 161
) lengths (in µm): 13–16, 27–30, 50–54, 61, 75. Third palpomere with 13–14 lanceolate sensilla clavata, longest 8 µm long.
Thorax
(
Fig. 162
). Median antepronotal lobes reduced; antepronotum with 2–3 lateral setae. Dorsocentrals 9–12, acrostichals 2, prealars 3, supraalar absent. Scutellum with 4 setae.
Wing
(
Fig. 163
). Wing cuneiform. Cu
1
slightly curved. R
4+5
ending distal to apex of M
3+4
. VR 1.26–1.42.
Costa
not extended. Brachiolum with 1 seta, other veins bare.
FIGURES 160–166.
Pseudosmittia paulista
sp. n.
,
male.
160
—tentorium, stipes, and cibarial pump;
161
—palp;
162
— thorax;
163
—wing;
164
—hypopygium, dorsal aspect;
165
—hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right;
166
—gonostylus.
Legs
. Spur of fore tibia 32–43 µm long, spurs of mid tibia 27 µm and 18 µm long, of hind tibia 25–41 µm and 12–20 µm long. Width at apex of fore tibia 20 µm, of mid tibia 18 µm, of hind tibia 24 µm. Comb with 10–11 setae, longest 25–32 µm long, shortest 18–20 µm long. Length and proportions of legs as in
Table 21
.
TABLE 21.
Length (in µm) and proportions of legs of
Pseudosmittia paulista
sp. n.
, male (n = 1–2).
fe |
ti |
ta1 |
ta2 |
ta3 |
ta4 |
ta5 |
LR |
BV |
SV |
BR |
p1 |
302–313 |
346–356 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
p2 |
263 |
295 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
p3 |
277–374 |
313–389 |
151–230 |
– |
– |
– |
– |
0.48–0.59 |
– |
3.31–3.90 |
5.4 |
Hypopygium
(
Figs 164–166
). Anal point narowly triangular, 13–15 µm long, 6–8 µm wide at base, with 2–3 setae at base. Tergite IX with 8–12 additional setae. Laterosternite IX with 4–5 setae. Phallapodeme 48 µm long. Sternapodeme without oral projections, transverse sternapodeme about 45 µm long. Virga 14–20 µm long; penis cavity sclerotized. Gonocoxite 111–118 µm long. Inferior volsella with short rounded apex projecting caudad, reaching to about 0.66 of gonocoxite length, with fringe of stout curved microtrichia. Gonostylus 47–54 µm long, crista dorsalis indicated; megaseta 6–8 µm long. HR 2.04–2.48. HV 2.89–3.34.
Distribution and biology.
Two specimens were collected in a Malaise trap in a primary lowland Mata Atlântica forest in
São Paulo State
,
Brazil
.