The Smicridea (Smicridea) fasciatella species group (Trichoptera: Hydropsychidae) in Brazil: six new species and new distributional records Desiderio, Gleison Robson Pes, Ana Maria Andrade-Souza, Vanderly Hamada, Neusa European Journal of Taxonomy 2021 2021-05-24 750 1 156 196 Desiderio, Pes & Hamada Desiderio, Pes & Hamada 2021 [368,1122,657,684] Insecta Hydropsychidae Smicridea Animalia Trichoptera 8 164 Arthropoda species brevitruncata sp. nov. Smicridea   urn:lsid:zoobank.org:act: 47DD9364-4029-4B7C-A3EC-08B52BC03778  Figs 3, 4B, 5 –6    Diagnosis   Smicridea brevitruncata sp. nov.belongs to the  albosignatacomplex of Flint (1981). It is most similar to  S. riita Flint, 1981from Venezuelabased on the obliquely truncated apex of tergite X in dorsal view. However, in  S. brevitruncata sp. nov.the apical segment of the inferior appendage is thick and short, and the truncated apex has numerous medium-sized, acuminate setae on the mesal margin, whereas in  S. riitait is long, slender, with an acute apex, bearing numerous short, thin setae. Furthermore, the new species can be diagnosed by the basal segment of the inferior appendage having four long, stout apical spine-like setae, two dorsal and two on the mesal margin, and by the shape of the phallotremal sclerite, mainly in dorsal view. Additionally,  S. brevitruncata sp. nov.differs from all other species of S.(  Smicridea) by the absence of the internal reticulate sacs on abdominal segments VI and VII.    Etymology The specific epithet is an allusion to the characteristics of the inferior appendages, which are short and apically truncated. Derived from the Latin words, ʻ breviʼ = ʻshortʼ and ʻ  truncataʼ = ʻpiece cut off, tip, endʼ.    Material examined    Holotype BRAZIL• ♂; Santa Catarina, Ponte Serrada, BR–282, Rio Irani, Parque dos Butieiros; 26º55′49.2″ S, 51º52′29.3″ W;  1022 ma.s.l.;  5 Sep. 2009; N. Hamada, A.M.O. Pesand J.O. Silvaleg.; white sheet with an LED light; INPA-TRI 000108.    Paratypes BRAZIL• 8 ♂♂; same collection data as for holotype; INPA-TRI 000109•  2 ♂♂; same collection data as for holotype; DZUP•  2 ♂♂; same collection data as for holotype; DZRJ•  2 ♂♂; same collection data as for holotype; MZUSP.    Description  Adult male( Figs 5–6) FOREWING LENGTH. 4.52–5.49 mm(mean = 4.75 mm, SD = 0.37, n = 5). COLOR. General color dark brown (in alcohol) ( Fig. 5A). Antennae brown ( Fig. 5A). Head dark, with grayish to black setae on dorsum ( Fig. 5B–C); dorsally with slightly pronounced median suture; with five setal warts; anteromesal wart small, rounded; anterolateral pair undivided, weakly delimited; posterolateral pair large, ovoid ( Fig. 5C). Maxillary palp with segments 1–4 increasing gradually about 0.8× in size toward more apical segments, segment 5 long, about 1.2× as long as all previous segments combined ( Fig. 5B). Thorax dark brown, covered with brown setae; legs brown, with mid-leg tarsi yellowish ( Fig. 5A). Wing venation typical for subgenus ( Fig. 5D–E). Forewings, in alcohol, uniformly fuscous, faintly marked with transverse band subapically on pterostigma reaching base of R4+5 and small spot on apex of Cu2 ( Fig. 5D). Sternum V with anterolateral glandular processes slightly shorter than sternum. Abdominal segments VI and VII without pairs of internal reticulate sacs ( Fig. 5F).   Fig. 4.Habitats of the new species of  Smicridea McLachlan, 1871treated in this study: A. First-order stream, Amazonas, Brazil, collection site of  Smicridea( Smicridea) blahnikiDesiderio, Pes & Hamada sp. nov. B. Rio Irani, Santa Catarina, Brazil, collection site of  S.( S.) brevitruncataDesiderio, Pes & Hamada sp. nov. C. Arroio Lajeado, Rio Grande do Sul, Brazil, collection site of  S.( S.) caaguaraDesiderio, Pes & Hamada sp. nov.holotype. D. Cascata Raddatz, Arroio Teotônica, Rio Grande do Sul, Brazil, collection site of  S.( S.) caaguara sp. nov.paratype. E. Igarapé Ipiranga, Amazonas, Brazil, collection site of  S.( S.) ipirangaDesiderio, Pes & Hamada sp. nov. F. Balneário Km 18.5, Amazonas, Brazil, collection site of  S.( S.) polyacanthaDesiderio, Pes & Hamada sp. nov.   Fig. 5.  Smicridea( Smicridea) brevitruncataDesiderio, Pes & Hamada sp. nov., holotype, ♂ (INPA-TRI 000108). A. Lateral habitus (in alcohol). B. Head, right lateral view. C. Head, dorsal view. D. Forewing, right dorsal view. E. Hind wing, right dorsal view. F. Abdomen, ventral view. Scale bars in mm: A = 2; B–C = 0.5; D–F = 1.   Fig. 6.  Smicridea( Smicridea) brevitruncataDesiderio, Pes & Hamada sp. nov., male terminalia, holotype (INPA-TRI 000108). A. Terga IX, X and inferior appendages, lateral view. B. Same, dorsal view. C. Phallic apparatus, lateral view. D. Apex of phallic apparatus, dorsal view. E. Apex of phallic apparatus (photograph). Scale bars in mm: A–C = 0.1; D–E = 0.05. MALE GENITALIA ( Fig. 6). Segment IX in lateral view with anterolateral margin straight, strongly sclerotized ( Fig. 6A); posterodorsal margin bearing small spicules, distributed in two subtriangular bands ( Fig. 6B). Tergum X elongate; in lateral view, ventrolateral margin strongly sclerotized, with 10 to 12 short, stout setae on apical third; apex produced and upturned ( Fig. 6A); in dorsal view, lateral margin slightly rounded; dorsomesal setose area bearing 10 medium-sized, thin setae; divided apicomesally by V-shaped incision about ⅓ its length; apex of tergite obliquely truncated, with about three short, thin setae ( Fig. 6B). Inferior appendages 2-segmented; basal segment long, slightly inflated distally, covered with long, thin setae, with four long, stout apical spine-like setae, two dorsal and two on mesal margin; apical segment short, about ¼ as long as basal segment, thick, slightly curved medially, apex truncated with numerous medium-sized, acuminate setae on mesal margin ( Fig. 6B). Phallic apparatus long and tubular; basal section, in lateral view, enlarged, 4× diameter of phallotheca at its narrowest point, forming an angle of about 113° with apical section; median section of phallotheca straight, without processes ( Fig. 6C); apex enlarged, with pair of claw-shaped internal dorsolateral plates, longer than basal width, curved mesally and directed posterad; endothecal membranes without spines; phallotremal sclerite, in dorsal view, distinct, strongly sclerotized, proximal region with bifid base and pointed apex, distally with pair of subtriangular, toothlike structures, which are overlapped by pair of slender, curved mesad processes ( Fig. 6D–E); in lateral view, proximal region with small middorsal lobe, distally directed downward ( Fig. 6C). Ejaculatory duct of endophallus, in lateral view, distinct, slightly sclerotized ( Fig. 6C).   Bionomics This species was collected near a large fast-flowing river about 20 mwide, located at 1022 ma.s.l. in the southern part of the Brazilian Atlantic Forest ( Fig 4B). In this region the predominant vegetation is Mixed Ombrophilous Forest composed mainly of  Araucaria angustifolia(Bertol.) Kuntze (Araucariaceae), with intense agricultural and pasture activities.   Distribution( Fig. 3)  Brazil: Atlantic Forest ( Santa Catarina). 3342254372 2009-09-05 white sheet with an LED light INPA-TRI N. Hamada & A. M. O. Pes & J. O. Silva Brazil 1022 -26.930332 Ponte Serrada 1 -51.874805 8 164 INPA-TRI 000108 1 1 Santa Catarina holotype 3342254367 2009-09-05 white sheet with an LED light INPA-TRI Ponte Serrada, BR & Parque dos Butieiros & N. Hamada & A. M. O. Pes & J. O. Silva Brazil 1022 -26.930332 BRAZIL 1 -51.874805 8 164 INPA-TRI 000109 8 8 Santa Catarina paratype 3342254338 2009-09-05 white sheet with an LED light DZUP Ponte Serrada, BR & Parque dos Butieiros & N. Hamada & A. M. O. Pes & J. O. Silva Brazil 1022 -26.930332 Rio Irani 1 -51.874805 8 164 2 2 Santa Catarina paratype 3342254344 [476,1058,1639,1666] 2009-09-05 white sheet with an LED light DZRJ Ponte Serrada, BR & Parque dos Butieiros & N. Hamada & A. M. O. Pes & J. O. Silva Brazil 1022 -26.930332 Rio Irani 1 -51.874805 8 164 2 2 Santa Catarina paratype 3342254318 2009-09-05 white sheet with an LED light MZUSP Ponte Serrada, BR & Parque dos Butieiros & N. Hamada & A. M. O. Pes & J. O. Silva Brazil 1022 -26.930332 Rio Irani 1 -51.874805 8 164 2 2 Santa Catarina paratype