Austrotinodes chagasi, Leandro Lourenço Dumas & Wagner Rafael M. de Souza, 2017

Leandro Lourenço Dumas & Wagner Rafael M. de Souza, 2017, On Brazilian Austrotinodes Schmid, 1955 (Insecta, Trichoptera, Ecnomidae): new species, new distributional records and an updated checklist, European Journal of Taxonomy 297, pp. 1-40 : 11-13

Austrotinodes chagasi sp. nov.

urn:lsid:zoobank.org:act:99DB52C3-4BE7-4DFE-8FCB-96673F9AC866

Figs 4 , 14 Diagnosis

This species resembles A. bracteatus in the shape of its intermediate appendage, which is elongate, club-shaped and possesses stout spine-like setae near its apex. However, A. chagasi sp. nov. can be easily distinguished from A. bracteatus by its more elongate and crenulated preanal appendages, and especially by the general structure of the phallus, which has a branched lateral process, with a long finger-like ventral branch, whereas in the formerly described species the lateral process is shorter and not branched.

Etymology

The species is dedicated to the Brazilian sanitary physician, scientist and bacteriologist Carlos Justiniano Ribeiro Chagas, who was born at Oliveira in Minas Gerais state in 1879 and died in 1934. Carlos Chagas described, in 1909, the disease named after him (Chagas disease) as well as the etiological agent ( Trypanosoma ) and the vector (hematophagous insects, Triatoma infestans Klug, 1843 ). The deed of discovering all the links in the epidemiological chain of an infectious disease was absolutely unprecedented in the history of medicine.

Material examined

Holotype

BRAZIL: ♂, Espírito Santo, Santa Leopoldina, Comunidade Chaves , afluente de 2ª ordem do Rio da Prata , 20°02′22.9″ S, 40°31′54.2″ W, 592 m, 23 Mar. 2013, L.L. Dumas and J.L. Nessimian leg. ( DZRJ).

Paratypes

BRAZIL: Santa Catarina: 1 ♂, Blumenau, PE Spitzkopf, Ribeirão do Caeté , 27°00′22.6″ S, 49°06′50.4″W, 130 m, 20 Jan. 2011, J.L. Nessimian and D.M. Takiya leg. ( DZRJ). — Paraná: 4 ♂♂, Guaraqueçaba, RPPN Salto Morato, Rio Morato , 25°10′07.1″ S, 48°17′56.3″ W, 36 m, 25 Jan. 2011, L.L. Dumas and A.P.M. Santos leg. ( DZRJ) ; 2 ♂♂, 3 ♀♀, Guaraqueçaba, RPPN Salto Morato, Rio Morato , 25°10′58.3″ S, 48°17′57.2″ W, 24 m, 25 Jan. 2011, L.L. Dumas and R.B. Braga leg. ( DZRJ) ; 1 ♂, Guaraqueçaba, Ribeirão do Engenho , 25°10′31.0″ S, 48°22′16.2″ W, 25 m, 25 Jan. 2011, L.L. Dumas and J.L. Nessimian leg. ( DZRJ) ; 1 ♂, 2 ♀♀, Morretes, Serra da Graciosa, Recanto Histórico , Rio Ipiranga , 25°23′00.7″ S, 48°51′19.6″ W, 107 m, 24 Jan. 2011, L.L. Dumas and J.L. Nessimian leg. ( DZRJ). — São Paulo: 3 ♂♂, Cananéia , PE Ilha do Cardoso, Rio Perequê, 25°06′02.7″ S, 47°55′52.8″ W, 40 m, 18–23 Oct. 2011, AP Pinto leg. ( DZRJ) ; 2 ♂♂, Iporanga, estrada Apiaí- Iporanga, confluência do Rio Sem Fim com Rio Betari , 24°34′06.6″ S, 48°39′36.6″ W, 245 m, 10 Oct. 2011, G.A. Jardim and J.L. Nessimian leg. ( DZRJ) ; 2 ♂♂, 4 ♀♀, Ubatuba, PE da Serra do Mar, Núcleo Picinguaba , Rio da Fazenda , 23°20′46.0″ S, 44°50′59.6″ W, 52 m, 2 Oct. 2009, L.L. Dumas and A.P.M. Santos leg. ( DZRJ) ; 1 ♂, Ubatuba, PE da Serra do Mar, Núcleo Picinguaba , Casa de Farinha , Rio da Fazenda , 23°20′46.0″ S, 44°50′59.6″ W, 52 m, 31 May 2014, L.L. Dumas and J.L. Nessimian leg. ( DZRJ). — Espírito Santo: 1 ♂, Santa Teresa, Reserva Biológica Santa Lúcia, 9–10 Jan. 2003, A.L. Carvalho leg. ( DZRJ) ; 1 ♂, Alegre, Celina, PE da Cachoeira da Fumaça , Rio Braço Norte Direito , Cachoeira da Fumaça , 20°37′52.5″ S, 41°36′22.1″ W, 163 m, 28 Mar. 2011, L.L. Dumas and G.A. Jardim leg. ( DZRJ). — Rio de Janeiro: 1 ♂, Angra dos Reis, Perequê , afluente de 2ª ordem do Rio Mambucaba , 22°56′46.9″ S, 44°34′53.9″ W, 8 m, 19 Mar. 2001, L.L. Dumas and J.L. Nessimian leg. ( DZRJ) ; 1 ♂, Angra dos Reis , Ilha Grande, riacho próximo ao aqueduto, 23°08′01.8″ S, 44°10′23.4″ W, 44 m, 10–13 Jan. 2003, L.L. Dumas and J.L. Nessimian leg. ( DZRJ) ; 1 ♂, 1 ♀, Macaé, Duas Barras, Córrego Duas Barras, 22°15′52.1″ S, 42°03′44.0″ W, 217 m, 21 Mar. 2009, G.A. Jardim and J.L. Nessimian leg. (DZRJ); 1 ♂, Nova Friburgo, Lumiar, afluente de 2ª ordem do Rio Toca da Onça , 22°23′23.7″ S, 42°20′04.8″ W, 716 m, 5 Mar. 2009, G.A.

Jardim and J.L. Nessimian leg. (DZRJ); 1 ♂, 2 ♀♀, Paraty, São Gonçalo, afluente do Rio São Gonçalo , 23°01′26.7″ S, 44°36′44.0″ W, 60 m, 22 Mar. 2011, L.L. Dumas and J.L. Nessimian leg. ( DZRJ) ; 2 ♂♂, Paraty, Taquari, afluente do Rio Taquari , 23°02′30.4″ S, 44°41′45.2″ W, 62 m, 12 Oct. 2012, P.M. Souto and R.S. Gonçalves leg. ( DZRJ) ; 1 ♂, Paraty, Perequê, afluente do Rio Mambucaba , 22°56′28.4″ S, 44°36′33.8″ W, 75 m, 1 Feb. 2013, P.M. Souto, L.F.L. Silveira and J.R. Mermudes leg. ( DZRJ) .

Description

ADULT. Length of forewing 4.00– 5.60 mm (n = 10). In alcohol, general color golden brown, with yellowish brown sclerites; antennae stramineous, dorsum of head golden brown, with pale yellow and dark brown setae; thorax golden brown dorsally, light yellow ventrally; legs yellow, legs segments with brown setae; wings pale brown, forewing with fine pale brown setae dorsally.

WINGS. Forewing with R1 forked apically, forks II–V present; hind wing with forks II, III and V, discoidal cell absent.

MALE GENITALIA. Segment IX deeply divided, sternum elongate; in lateral view, narrow basally, margins parallel-sided from distal half, ventral margin curved basally; in ventral view, about 2 times as long as wide, enlarged in distal half, apical margin convex. Phallic guide darkly sclerotized, not highly elevated; in lateral view, arched, base broad, apex rounded, reaching middle of inferior appendage. Inferior appendages fused mesally, attached apicomesally on sternum IX; in lateral view, elongate, ovate, apex rounded; in ventral view, lateral lobes very elongate, directed posterolaterally, posterior margin concave, crenulated. Tergum X divided into pair of semimembranous subtriangular lobes, lobes bulbous, bearing slender setae along inner margin; in lateral view, subrectangular. Preanal appendages long, surface setose, margin crenulated, parallel-sided, apex rounded. Intermediate appendages long, narrow, approximately ⅔ length of preanal appendage; in lateral view, club-shaped, enlarged apically, with 3 stout spine-like setae at apex (subapically positioned in dorsal view). Phallus with sclerotized phallobase and membranous apicoventral region; lateral process moderately elongate, bifid; dorsal branch short, robust, pointed posterodorsoapically, with 2 spines on distal half, the shorter one positioned on small projection; ventral branch long, finger-like in lateral view, wider at base in dorsal view, rounded apically, with 3 spines, 1 positioned on small projection near base, 1 almost at median region, and 1 at apex; without basomesal process.

Distribution

Brazil (ES, RJ, SC, SP, PR).

Figures

Fig. 4. Austrotinodes chagasi sp. nov., male genitalia. A. Ventral view. B. Dorsal view. C. Left lateral view. D. Phallic apparatus, left lateral view. E. Phallic apparatus, dorsal view.

Fig. 14. Distribution map of the new species of Austrotinodes.