New species of Helicopsyche von Siebold 1856 (Trichoptera: Helicopsychidae) from Brazil, including the redescription of Helicopsyche (Feropsyche) planorboides Machado 1957
Dumas, Leandro Lourenço
Nessimian, Jorge Luiz
Zootaxa
2019
2019-06-19
4619
2
231
250
7VCFB
Dumas & Nessimian, 2019
Dumas & Nessimian
2019
[151,542,291,318]
Insecta
Helicopsychidae
Helicopsyche
Animalia
Trichoptera
10
241
Arthropoda
species
petri
sp. nov.
Feropsyche
( Figures 5A–5G) urn:lsid:zoobank.org:act: 6B01EAB2-6C74-4BEB-A0CF-DAF3F480179F
Diagnosis. The new species is similar to Helicopsyche( F.) monda Flint 1983and H.( F.) lambda Flint 1983by the overall shape of the inferior appendages and their basomesal lobes in lateral view. It differs from both in that the inferior appendages are wider dorsally, each with its inner margin strongly projected mesad, forming a rounded large lobe, and the basomesal lobes are less trianguloid, bearing spine-like setae. Furthermore, H. ( F.) petri sp. nov.has tergum X without a mesal notch and is truncate apically, while in H.( F.) mondaand H.( F.) lambdait has a shallow mesal notch and is more rounded apically.
Description. Adult. Similar to H. ( F.) bendego sp. nov.except as follows: Overall color (in alcohol) uniformly yellowish-brown; antennae, palps and legs pale yellow. Each foreleg anterior apical tibial spur about 3xlonger than posterior spur. Male forewings each 3.2–3.9 mmlong (n = 10; holotypemale = 3.4 mm). Abdominal sternum VI ventral process long, about as long as segment VI, tubular along its length, oriented posteroventrad, slightly wider at base, curved slightly upward in lateral view, with microtrichiae along length, apex rounded, with lamellae apicoventrally ( Figs. 5F, 5G). Male genitalia. Segment IX short ventrally; in lateral view with anteromesal margin well-developed, anterodorsal margin almost straight, and anteroventral margin concave; lateral apodeme well-developed, located midlaterally on segment ( Fig. 5A); in dorsal view horseshoe-like, with anterior margin strongly concave ( Fig. 5B); in ventral view with anteroventral and posteroventral sclerotized bars, lateral portions well-developed, anterolateral lobes projected anterad ( Fig. 5C). Segment X, in lateral view, short, triangular, tapering to apex from base ( Fig. 5A); in dorsal view subtrapezoidal, not surpassing apices of inferior appendages, mesodorsal borders well-marked, inverted Y-shaped, bearing sparse stout setae near middle of lateral margins and pair of apicolateral clusters of 4 stout setae, apex truncate, without mesal notch ( Fig. 5B). Superior appendages ovate in lateral view, clavate in dorsal view ( Figs. 5A, 5B). Basal plate of inferior appendages subtriangular in lateral and ventral views, almost reaching the anteroventral margin of segment IX as viewed laterally ( Figs. 5A, 5C); primary branches of inferior appendages each in lateral view nearly drop-like, broad, distal portion about 2xbroader than its proximal portion, dorsal margin slightly convex, ventral margin sinuous, apicodorsal margin concave, undulating, with long, stout setae along apical margin, apex pointed ( Fig. 5A); in dorsal and ventral views broad, curved mesad, tapering apically ( Figs. 5B, 5C); in dorsal view with dorsal portion rounded, strongly projecting mesad (visible also in ventral view), with about 12–15 long, stout setae at inner margin, inner margin undulate, apex narrow, subacute, turned mesad, with an apical short, stout seta ( Fig. 5B); in ventral view with inner margin undulating, bearing several long, stout setae ( Fig. 5C); basomesal lobes of inferior appendages each short, slightly protruding beyond primary branch in lateral view ( Fig. 5A); in ventral view with right-angled median corner, bearing 5-6 short, dark spine-like setae ( Fig. 5C). Phallus tubular, moderately down-curved along its length; phallobase narrow, short, slightly inflated mesodorsally, its apicoventral margin elongate, rounded apically, apex semi-membranous; endotheca membranous lobe partially covering endophallus; phallotremal sclerite small, strongly C-shaped ( Figs. 5D, 5E).
Holotypemale: BRAZIL: Rio de Janeiro: Rio das Ostras, Reserva Biológica União, Trilha Interpretativa do Pilão, riacho, 22°25’29.2” S, 42°02’21.2” W, 07.iii.2014, 42 m, FC Avelino& LS Barbosaleg. ( DZRJ). Paratypes: BRAZIL: Rio de Janeiro:same data as holotype, 8 males( DZRJ); same data as holotype, 2 males( MZSP); Nova Iguaçu, Tinguá, Reserva Biológica do Tinguá, Rio Tinguá(atrás da brigada), 22°35’08.4” S, 43°26’14.4” W, 13.ix. 2016, 159 m, LL Dumas, JL Nessimian& JF Barbosaleg., 1 male( DZRJ); Nova Iguaçu, Tinguá, Reserva Biológica do Tinguá, estrada de captação de água do Macuco, afluente do Rio Tinguá, 22°35’19.5” S, 43°26’27.9” W, 15.ix. 2016, 211 m, LL Dumas, JL Nessimian& JF Barbosaleg., 1 male( DZRJ); Miguel Pereira, Vera Cruz, Reserva Biológica do Tinguá, Córrego Fazendadas Pedras, 22°31’16.9” S, 43°25’54.0” W, 10.xi. 2016, 754 m, LL Dumas, JL Nessimian, B Clarkson& JF Barbosaleg., 1 male( DZRJ).
Distribution. Brazil( Rio de Janeiro).
Etymology. This species is dedicated to the second and last Brazilian emperor Dom Pedro II ( Petrusmeans Pedro in Latin), who was born in Rio de Janeiro in 1825 and died in 1891. The Imperial Palace (Paço de São Cristóvão) housed the Brazilian Imperial Family between 1822 and 1889, and also hosted the Republican Constituent Assembly from 1889 to 1891, before being assigned to the use of the National Museum in 1892. Dom Pedro II was considered a patron of arts and science and was an avid amateur scientist, playing a key role in advances in science, technology and education in Brazil. By the end of the 19th century, reflecting the personal preferences of Dom Pedro II, the National Museum started to invest in several scientific areas. The Emperor himself contributed with several of the collections artifacts, which he acquired during many of his trips abroad. In 1946, the Imperial Palace was incorporated into the Universidade Federal do Rio de Janeiro, hosting several researchers and six post-graduations courses, as Zoology, Botany and Anthropology. Unfortunately, the palace, which housed a large part of the 20 million objects in the museum’s collection, was engulfed by a fire on 2 September 2018.
2268317472
2014-03-07
LS, DZRJ
Rio das Ostras & FC Avelino & Barbosa
Brazil
-22.424778
Trilha Interpretativa do Pilao
1
-42.039223
Reserva Biologica Uniao
10
241
1
Rio de Janeiro
holotype
2268317462
[199,1132,1643,1670]
2014-03-07
DZRJ
Rio das Ostras & FC Avelino & Barbosa
Brazil
-22.424778
Trilha Interpretativa do Pilao
1
-42.039223
Reserva Biologica Uniao
10
241
8
8
Rio de Janeiro
paratype
2268317483
2014-03-07
MZSP
Rio das Ostras & FC Avelino & Barbosa
Brazil
-22.424778
Trilha Interpretativa do Pilao
1
-42.039223
Reserva Biologica Uniao
10
241
2
2
Rio de Janeiro
paratype
2268317452
2016-09-13
DZRJ
LL Dumas, JL & Nessimian & JF Barbosa
Brazil
Nova Iguacu
-22.585667
Reserva Biologica do Tingua
1
-43.437336
Tingua
10
241
1
1
Rio de Janeiro
paratype
2268317474
2016-09-15
DZRJ
LL Dumas, JL & Nessimian & JF Barbosa
Brazil
Nova Iguacu
-22.58875
Reserva Biologica do Tingua
1
-43.441086
Tingua
10
241
1
1
Rio de Janeiro
paratype
2268317459
DZRJ
LL Dumas, JL & Nessimian, B & Clarkson & JF Barbosa
Brazil
Miguel Pereira
2016754
-22.52136
Reserva Biologica do Tingua
1
-43.431667
Vera Cruz
10
241
1
1
Rio de Janeiro
paratype