The genus Phalaecus Stål, 1862 in French Guiana, description of P. carmini n. sp., and the female of P. lineatus Grazia, 1983 from Mitaraka (Hemiptera: Pentatomidae)
Author
Lupoli, Roland
text
Zoosystema
2019
2019-02-05
41
3
21
28
journal article
10.5252/zoosystema2019v41a3
836ea572-b61e-446b-b9da-d799553ffc47
1638-9387
3718476
urn:lsid:zoobank.org:pub:BF61A0DE-B25D-4362-8A28-5B4854BC67C8
Phalaecus lineatus
Grazia, 1983
(
Figs 1C
;
2
H-J)
Phalaecus lineatus
Grazia, 1983: 186
.
MATERIAL
EXAMINED. —
French Guiana
.
60 specimens
:
18 ♀
,
42 ♂
.
Maripasoula
, massif du
Mitaraka
,
c.
2°14’N
,
54°27’O
,
25.II-26.III.2015
,
La Planète Revisitée
–
MNHN
/ PNI
Guyane
2015 (
APA 973
-1)
,
MNHN
,
UV-MV
light trap,
25.II.2015
,
1 ♂
, coll.
RL
;
Polyvie
trap (pink
LED
),
3.III.2015
,
7 ♂
, coll.
RL
;
GemLight
trap (
UV
& green
LED
),
7.III.2015
,
2 ♂
, coll.
RL
;
Polyvie
trap (pink
LED
),
11.III.2015
,
1 ♂
, coll.
RL
;
GemLight
trap (
UV
& green
LED
),
13.III.2015
,
1 ♂
, coll.
RL
;
Polyvie
trap (pink
LED
),
20.III.2015
,
5 ♂
,
1 ♀
, coll.
RL
;
Polyvie
trap (pink
LED
),
21.III.2015
,
9 ♂
,
1 ♀
, coll.
RL
;
GemLight
trap (
UV
& green
LED
),
21.III.2015
,
3 ♂
,
2 ♀
,
MNHN
;
Polyvie
trap (pink
LED
),
25.III.2015
,
7 ♂
et
1 ♀
, coll.
RL
;
GemLight
trap (
UV
& green
LED
),
25.III.2015
,
6 ♀
,
2 ♂
, coll.
RL
;
Polyvie
trap (blue
LED
),
20.VIII.2015
,
2 ♂
,
2 ♀
,
MNHN
;
Polyvie
trap (pink
LED
),
20.VIII.2015
,
2 ♂
,
2 ♀
, coll.
RL
.
—
Saül
,
Point
de vue,
Polyvie
trap (blue
LED
),
20.II.2017
,
1 ♀
, coll.
RL
;
Polyvie
trap (blue
LED
)
6.IV.2017
,
2 ♀
, coll.
RL
.
DISTRIBUTION. — Surinam: Pepejoe. French Guiana: Maripasoula and Saül (present paper).
DIAGNOSIS. — According to the original description of the male
holotype
from Surinam by
Grazia (1983)
. Dorsal surface globally pale yellow-ocher as well as legs (
Fig. 1C
). Pronotum with ten longitudinal lines formed by brownish shallow punctures. Base of scutellum with four longitudinal punctured lines in the continuation of the four central pronotal longitudinal lines, only the two external lines reaching the apex. Corium with irregular punctured network of lines, formed by brownish shallow punctures, leaving large irregular pale yellow-ocher impunctate spots. Connexivum impunctate and almost concolorous, weakly marked alternatively with pale rufous spots. Antennomeres I to IV concolorous, apical half of antennomere V slightly darker.
Genital plates impunctate pale yellow-ocher (
Fig. 2J
) as well as ventral surface. Gonocoxites 8 oval with a ratio length/width larger than 1.5, reaching the posterior margin of gonocoxites 9. Gonocoxites 9 and laterotergites 9 are on the same plane. Apex of laterotergites 8 conical and very similar to the female of
P. pustulatus
(
Fig. 2D
) but slightly more inclined outwardly. Laterotergites 9 narrow, basally covered by gonocoxites 8, so their lateral margins are not protruding over the lateral sides of gonocoxites 8. Proctiger cylindrical.
DESCRIPTION OF FEMALE
Measurements (mm)
Total length: 15.7-17.2; pronotum width (at humeral angles): 9.0-9.6; abdomen width: 10.0-10.9; head length: 1.6-1.9; head width across the eyes: 2.3-2.5; pronotum length: 3.5- 3.6; Antennomeres I: 1.2-1.5, II: 1.6-1.7, III: 2.2-2.6, IV: 3.1-3.3, V: 2.7-2.8.
FIG. 2. — Male and female genitalia in
Phalaecus
spp.:
A
,
P. pustulatus
(
De Geer, 1773
)
♂, pygophore, dorsal;
B
,
idem
from
Régina, Piste Bélizon
;
C
,
idem
♀ genital plates, ventral;
D
,
idem
from
Régina, Nouragues
;
E
,
P. ruckesi
Grazia, 1983
♂ pygophore, dorsal;
F
,
idem
from Roura, Montagne des Chevaux;
G
,
idem
♀, genital plates, ventral;
H
,
P. lineatus
Grazia, 1983
♂, pygophore, dorsal;
I
,
idem
, from Maripasoula, Massif du Mitaraka;
J
,
idem
♀, genital plates, ventral, from Maripasoula,Massif du Mitaraka;
K
,
P.nigromaculatus
Grazia,1983
♂, pygophore,dorsal;
L
,
idem
, from Roura, Montagne des Chevaux;
M
,
idem
♀, genital plates, ventral;
N
,
idem
, from Roura, Montagne de Kaw;
O
,
P. paraense
Grazia, 1983
♂, pygophore, dorsal;
P
,
P. carmini
n. sp.
♂, pygophore, dorsal, from Sinnamary, Route du barrage de Petit Saut;
Q
,
idem
, detail of the right paramere. Abbreviations: ♀ genitalia:
GC8
, Gonocoxites 8;
GC9
, Gonocoxites 9;
La8
, Laterotergites 8;
La9
, Laterotergites 9;
X
, abdominal segment X or Proctiger. ♂ genitalia:
Dr
, dorsal rim;
Vr
, ventral rim;
Pla
, posterolateral angle;
Pa
, paramere;
Pr
, abdominal segment X or Proctiger. Scale bars: A-P, 1 mm; Q, 0.5 mm. A, C, E, G, H, K, M, O are original drawings adapted from
Grazia (1983)
.
REMARK
Described previously only from the male
holotype
collected in 1952, this species is mentioned here for the first time in French Guiana with
60 specimens
collected in
2015 and 2017
from two localities (57 from Mitaraka, three from Saül), in- cluding more than twice more males than females (sex ratio close to 2:1). The males may be more attracted by lights than females. Conversely,
P. pustulatus
sex ratio is close to 1:1. The female of
P. lineatus
is described here and this species is photographed for the first time.