New species of Helicopsyche von Siebold 1856 (Trichoptera: Helicopsychidae) from Brazil, including the redescription of Helicopsyche (Feropsyche) planorboides Machado 1957
Author
Dumas, Leandro Lourenço
Author
Nessimian, Jorge Luiz
text
Zootaxa
2019
2019-06-19
4619
2
231
250
journal article
26455
10.11646/zootaxa.4619.2.2
eee17be5-c4f7-4e12-b9c7-cdf61fd1289b
1175-5326
3249579
E9CFFBFF-E437-4919-9E59-730E87875B62
Helicopsyche
(
Feropsyche
)
dinoprata
,
new species
(
Figures 3
A–3G)
urn:lsid:zoobank.org:act:
78355E46-538E-44A3-92B7-DB36015CE5F4
Diagnosis
.
Helicopsyche
(
F.
)
dinoprata
sp. nov.
is unlike any other species in the subgenus
Feropsyche
in having broad, elongate inferior appendages pointed apically, each with its basomesal lobe short, forming a small protuberance with a single spine-like seta at its apex.
Helicopsyche
(
F.
)
piroa
Ross 1944
,
H.
(
F.
)
vergelana
Ross 1956
, and
H.
(
F.
)
tapadas
Denning 1966
also have elongate inferior appendages, however they are obtuse apically, and the basomesal lobes are well-developed. Furthermore, the setation of tergum X is also distinctive for the new species.
Description
.
Adult
. Similar to
H
. (
F
.)
bendego
sp. nov.
except as follows: Each foreleg anterior apical tibial spur about
2x
longer than posterior spur. Male forewing length:
4.4–4.9 mm
(n = 10;
holotype
male =
4.8 mm
). Abdominal sternum VI ventral process moderately long, shorter than segment VI, tubular along its length, oriented posteroventrad, nearly straight in lateral view, with microtrichiae along length, apex rounded, with lamellae apicoventrally (
Figs. 3F, 3G
).
Male genitalia
. Segment IX short ventrally; in lateral view with anteromesal margin well-developed, anterodorsal margin elongated, slightly sinuous, and anteroventral margin concave; lateral apodeme well-developed, located midlaterally on segment (
Fig. 3A
); in dorsal view saddle-like, with anterior margin strongly concave (
Fig. 3B
); in ventral view with anterior margin straight, anterolateral lobes projecting anterad, posterior margin convex, with mesal portion slightly projected (
Fig. 3C
). Segment X, in lateral view, elongate, with dorsal and ventral margins subparallel, ventral margin abruptly tapering near apex, apex rounded (
Fig. 3A
); in dorsal view not surpassing apices of inferior appendages, mesodorsal borders inverted Y-shaped, bearing 2 medially linear rows of 7–8 stout setae along length and a cluster of 6-8 stout setae apically, apex rounded, with slightly mesal notch (
Fig. 3B
). Superior appendages originate dorsolaterally, setose, rounded in lateral view, nearly club-like in dorsal view (
Figs. 3A, 3B
). Basal plate of inferior appendages finger-like in lateral view, not surpassing anteroventral margin of segment IX (
Fig. 3A
), large and rounded at base in ventral view (
Fig. 3C
); primary branches of inferior appendages each broad, strongly elongate, covered by long, stout setae; in lateral view narrow at base, strongly widening towards midlength, and then tapering apically, apex acute, dorsal margin strongly undulated (
Fig. 3A
); in dorsal and ventral views curved mesad, tapering apically, with apex subacute, turned mesad (
Fig. 3B, 3C
); basomesal lobe of each inferior appendage short, not visible in lateral view; in ventral view, slightly protruding from primary branch, bearing single spine-like seta (
Fig. 3C
). Phallus tubular, strongly down-curved along its length; phallobase narrow, elongate, with apicoventral margin elongate, sclerotized, rounded apically; endotheca membranous lobe partially covering endophallus; phallotremal sclerite small, C-shaped (
Figs. 3D, 3E
).
Holotype
male
:
BRAZIL
:
Rio de Janeiro
:
Santa Maria Madalena
,
Parque Estadual do Desengano
,
Morumbeca dos Marreiros
, afluente do
Ribeirão Macapá
,
21°52’39.0” S
,
41°54’55.3” W
,
21.x.2016
, 1110 m,
LL Dumas
,
JL Nessimian
&
JF Barbosa
leg. (
DZRJ
).
Paratypes
:
BRAZIL
:
Rio de Janeiro
:
same data as holotype,
1 male
,
2 females
(
DZRJ
)
;
same data as holotype,
1 male
,
1 female
(
MZSP
)
;
Santa Maria Madalena
,
Parque Estadual do Desengano
,
Morumbeca
dos
Marreiros
,
Trilha da Mina
, afluente do
Ribeirão Macapá
,
21°52’3935.6” S
,
41°54’55.0” W
,
22.x.2016
, 1011 m,
LL Dumas, JL Nessimian
&
JF Barbosa
leg.,
2 males
,
3 females
(
DZRJ
)
;
São Fidélis
,
Parque Estadual do Desengano
,
Morumbeca
dos
Marreiros
, afluente do
Ribeirão Macapá
,
21°52’31.1” S
,
41°54’54.1” W
,
21.x.2016
, 1058 m,
LL Dumas, JL Nessimian
&
JF Barbosa
leg.,
5 males
,
2 females
(
DZRJ
)
;
Itatiaia
,
Parque Nacional do Itatiaia
,
Trilha
dos
Três Picos
,
22°27’19.0” S
,
44°36’44.0” W
,
01.xii.
2012
, 822 m,
JR Mermudes
leg.,
2 males
,
2 females
(
DZRJ
)
;
Itatiaia
,
Maromba
,
Rio Preto
,
Cachoeira do Escorrega
,
22°19’49.7” S
,
44°36’55.5” W
,
26.i.2012
, 1381 m, BHL
Sampaio
& ALH
Oliveira
leg.,
1 male
(
DZRJ
)
;
Mangaratiba
,
Parque Estadual do Cunhambebe
,
Sahy
,
Trilha Sahy-Rubião
,
22°53’57.8” S
,
43°59’15.4” W
, vii–viii.
2016, 400 m
,
LS
Barbosa
leg.,
9 males
,
7 females
(
DZRJ
)
;
Paraty
,
Sertão do Taquari
, afluente do
Rio Taquari
,
23°02’30.4” S
,
44°41’45.2” W
,
18.viii.2012
, 50 m,
PM
Souto
leg.,
1 male
,
1 female
(
DZRJ
)
;
Cachoeiras de Macacu
,
Guapiaçu
,
Reserva Ecológica de Guapiaçu
,
Rio Manoel Alexandre
,
22°25’15.1” S
,
42°44’20.2” W
,
23.viii.
2018
, 135 m,
LL Dumas
&
JL Nessimian
leg.,
2 males
(
DZRJ
)
.
Distribution
.
Brazil
(
Rio de Janeiro
).
Etymology
. This species is named for
Maxakalissaurus topai
Kellner
et al
. 2006
, an aeolosaurid dinosaur affectionally known as “Dinoprata”.
Maxakalissaurus topai
is the biggest dinosaur described in
Brazil
, measuring about 13 meters and nine tons, and lived about 80 million years ago. It was found in the city of Prata,
Minas Gerais
,
Brazil
, in 1998. A reconstructed
Maxakalisaurus topai
skeleton was on display at the Museu Nacional, being one of the main attractions of the public exhibition.