Contributions to the knowledge of Dichelops Spinola: description of a new species of Dichelops (Diceraeus) and of the male of Dichelops (Prodichelops) divisus (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Carpocorini)
Author
Poock-Da-Silva, Priscila
Laboratório de Entomologia Sistemática, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501 - 970, Porto Alegre, RS, Brazil
pripook@terra.com.br
Author
Barão, Kim Ribeiro
Laboratório de Entomologia Sistemática, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501 - 970, Porto Alegre, RS, Brazil & Programa de Pós-Graduação em Biologia Animal, Universidade Federal do Rio Grande do Sul
kbarao@yahoo.com.br
Author
Grazia, Jocelia
Laboratório de Entomologia Sistemática, Departamento de Zoologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Avenida Bento Gonçalves 9500, 91501 - 970, Porto Alegre, RS, Brazil & Programa de Pós-Graduação em Biologia Animal, Universidade Federal do Rio Grande do Sul
jocelia@ufrgs.br
text
Zootaxa
2013
2013-01-25
3609
1
journal volume
43935
10.11646/zootaxa.3609.1.4
b0280184-4185-4fd0-8bc9-c062756462f6
1175-5326
223229
94717F21-0352-4EB1-9BD2-154CABA2ABB4
Dichelops
(
Prodichelops
)
divisus
(
Walker, 1867
)
(
Figs. 2
,
16–21
)
Diceraeus
divisus
Walker, 1867: 250
.
Dichelops divisus
;
Lethierry & Severin, 1893: 129
;
Kirkaldy, 1909: 68
.
Dichelops
(
Prodichelops
)
divisus
;
Grazia, 1978: 90–91
.
Type
:
BMNH
,
HEM
. 1056,
female
, Bates col., deposited at Natural History Museum, London, United Kingdom. Examined
.
Type
locality
. “Amazon Region”; according to label information, the specimen was collected in “St. Paulo” [São Paulo de Olivença, Rio Solimões, Amazonas, Brazil].
Head.
Male proportion of antennal segments: I<II=III<IV>V; female proportion of antennal segments: I<II<III<IV<V.
Male genitalia.
Pygophore quadrangular (
Fig. 21
); genital cup widely open dorsoposteriorly (
Figs. 16–19
). Dorsal rim in an open ‘U’, sinuate at base, slightly projected over segment X (
Figs.18–19
). Superior processes of dorsal rim spine-like placed before middle of lateral margins of dorsal rim, clearly distant from paramere apices. Posterolateral angles almost truncate not projected posteriorly, with dense and convergent bristle tufts (
Figs. 16–19
). Ventral rim bisinuated, at middle in a shallow ‘U’ (
Figs. 16–17, 20–21
); inferior layer of ventral rim projecting ventrad in a beaklike structure, well-observed in profile and/or in posterior view of pygophore (
Figs. 16–17
). Bristles along ventral rim, especially over folded area inside genital cup, forming 1+1 tuft adjacent to posterolateral angles, 1+1 tuft laterad to ‘U’ concavity, and one tuft at middle of ‘U’ (
Figs. 17, 21
). Parameres long and slender, scyte like, laterad directed. Segment X almost pyriform, with 1+1 minute tubercles at middle (
Fig. 19
).
Measurements (n=1). Body length 8.96; abdominal width 5.44; head length 1.92, width 2.0; interocular distance 0.96; length of antennal segments: I—0.72, II—0.8, III—0.8, IV—1.12, V—1.6; pronotum length 2.16, width 5.6, width including spines 6.4; scutellum length 3.28, width 3.2.
FIGURES 13
–
15.
Dichelops
(
Diceraeus
)
caatinguensis
sp. nov.
, female genitalia. 13–14, genital plates, ventral view; 15, laterotergites, gonocoxites, and gonapophyses of ninth segment, and ectodermical genital ducts, ventral view (aaf, anterior annular flange; ch, chitinellipsen; cs, capsula seminalis; dr, ductus receptaculi; g9, gonapophyses 9; gc9, gonocoxites 9; la9, laterotergites 9; or, orificium receptaculi; paf, posterior annular flange; pco, pars communis; pi, pars intermedialis; tvi, thickening of vaginal intima; va, vesicular area; X, tenth segment) (Scale: figs. 13–14 = 1 mm; 15 = 0.3 mm).
FIGURES 16
–
21.
Dichelops
(
Prodichelops
)
divisus
, pygophore. 16–17, posterior view; 18–19, dorsal view; 20–21, ventral view. (dr, dorsal rim; pa, paramere; spdr, superior process of dorsal rim; vr, ventral rim; X, tenth segment) (Scales = 0.5 mm).
Female measurements (n=2). Body length 9.32±0.06 (9.28–9.36); abdominal width 5.68±0.11 (5.6–5.76); head length 1.8±0.06 (1.76–1.84), width 2.2±0.06 (2.16–2.24); interocular distance 1.12±0.23 (0.96–1.28); length of antennal segments: I—0.52±0.06 (0.48–0.56), II—0.76±0.06 (0.72–0.8), III—0.92±0.06 (0.88–0.96), IV—1.2, V11.6; pronotum length 1.96±0.06 (1.92–2.0), width 6.2±0.06 (6.16–6.24), width including spines 7.56±0.51 (7.2–7.92); scutellum length 3.8±0.06 (3.76–3.84), width 3.76±0.34 (3.52–4.0).
Material examined.
BRAZIL
,
Amazonas
,
Estirão da Preta
,
Rio Liberdade
,
11–15.V.2011
,
D. Takyia
col., sweep net (
INPA
),
13
,
1♀
.
COLOMBIA
,
Amazonas
,
Prefectura de Tabatinga
[
Leticia
],
12.IV.1992
,
A. Saenz
col. (
UFRG
),
1♀
.
Comments.
The male genitalia of
Dichelops
(
Prodichelops
)
divisus
are similar to the species of
Dichelops
(
Dichelops
)
by the superior process of the dorsal rim as a spine-like structure, and by the parameres’ shape, wide at the base, tapering toward the apex.
Dichelops
(
Prodichelops
)
divisus
can be distinguished from the other subgenera by the dorsal rim of the pygophore being medially bisinuated, and by the ventral rim of the pygophore being ventrally projected, forming a beaklike structure.
Distribution.
Western Amazonia, in Brazil and Colombia, corresponding to Emeri, Varzea and Madeira biogeographic provinces (
sensu
Morrone, 2006
).