Polycentropus claudioi Queiroz, Vilarino & Calor, 2023

Calor, Adolfo Ricardo, Pereira, Rafael, Queiroz, Larissa Laiane, Vilarino, Albane, Junior, Carlos Coracy Dultra de Azevedo, Queiroz, Amanda, Burgos-Miranda, Manoel Joaquim, Cavalcante-Silva, Amanda, Oliveira-Silva, Marcos Vinícius, Lucca, Giann, Quinteiro, Fabio Batagini, Dias, Everton Santos, Gomes, Victor de Andrade, França, Diogo, Costa, Anne Moreira, Desidério, Gleison Robson, Santos, Allan Paulo Moreira, Dumas, Leandro Lourenço & Bispo, Pitágoras da Conceição, 2023, LEAq - Laboratório de Entomologia Aquática “ Prof. Claudio Gilberto Froehlich ” and the task of facing the biodiversity knowledge deficits on Caddisflies (Trichoptera), Bahia, Brazil, Revista Brasileira de Entomologia (e 20230065) 67, pp. 2-33 : 18-20

Polycentropus claudioi Queiroz, Vilarino & Calor , sp. nov.

urn:lsid:zoobank.org:act:C23687A4-E714-4673-B189-207FE97CC237 ( Figs. 17A, B , 18 A-E)

Diagnosis. The new species is most similar to Polycentropus brevicornutus Vilarino and Calor, 2015c , with both species sharing the reduced intermediate appendage. Polycentropus claudioi sp. nov. can be differentiated mainly by the narrower mesolateral and mesoventral processes of preanal appendage in lateral view; the truncate angle at the dorsal margin of inferior appendage in lateral view (straight in P. brevicornutus ); and the wider apicoventral process of phallus in dorsal view.

Description. Adult male. Length of forewing 5.1–5.2 mm (n=2). General color medium brown; dorsum of head and thorax medium brown; legs pale yellow; wings brown (in alcohol).Venation: forewing forks I, II, III,IV and V present ( Fig.17A ); hind wing forks I, II and V present ( Fig. 17B ). Male genitalia. Sternum IX in lateral view subtrapezoidal, about 2/3 height of segment VIII; in ventral view rectangular, anterior margin slightly concave, posterior margin with lateral edges produced posterad. Terga IX + X membranous and alongated, with 3 lobes, extending beyond mesolateral process of the preanal appendage, in lateral view ( Fig. 18A ). Intermediate appendage in lateral view, very short, narrow, with pointed apex not exceeding terga IX + X ( Fig. 18A ). Preanal appendage bipartite, with mesolateral and mesoventral processes ( Figs. 18A, B ); mesolateral process in lateral view, setose, short, subtriangular, apex rounded, slightly wider than mesoventral process; in dorsal view about 2x as long as wide, round; mesoventral process in lateral view, setose, short, wider at base, apex round ( Fig. 18A ); in ventral view very short, shorter than intermediate appendage ( Fig. 18C ). Inferior appendage in lateral view trapezoidal, longer than processes of preanal appendage ( Figs. 18A, C ); dorsolateral lobe wide, setose, with sinuous dorsoapical margin and truncate apex ( Fig. 18A ); in ventral view dorsolateral lobe curved mesad, wide at base tapering apically, apex sclerotized, acute; basal lobe short, angulate; mesoventral spine prominent, acute ( Fig. 18C ). Phallus: phallobase half as long as phallus ( Figs. 19D, E ); in lateral view, apicoventral process about as long as 1/3 of phallus length, projecting ventrad, slightly curved, apex round ( Fig. 18C ); endothecal sclerotic band absent; endothecal spines absent; phallotremal sclerite subtriangular, in ventral view ( Fig. 18E ).

Holotype male. BRAZIL: Bahia: Mucugê. Parque Municipal de Mucugê, Boiadeiro stream, 12°59’46.5”S, 41°19’39.9”W, 01.x.2015, Malaise trap, R Campos, E Dias & AR Calor cols. ( MZUSP).

Paratype. Same data as holotype, 1 male ( UFBA) .

Distribution ( Figs. 20A, B ). Brazil (BA, Caatinga biome)

Remarks. The reduced intermediate appendage shared by Polycentropus claudioi sp. nov. and P. brevicornutus suggests a near relationship among them in relation to congeners which have lost this appendage ( Polycentropus amphirhamphus Hamilton & Holzenthal, 2011 , P.cachoeira Hamilton & Holzenthal, 2011 , P. inusitatus Hamilton & Holzenthal, 2011 , P.paprockii Hamilton & Holzenthal, 2011 , P.rosalysae Hamilton & Holzenthal, 2011 ).

Etymology. Species named in honor of Prof. Dr. Cláudio Gilberto Froehlich, the patron of LEAq.

Figures

Figure 17 Polycentropus claudioi new species, wings.A,forewing; B, hind wing.

Figure 18 Polycentropus claudioi new species, male genitalia. A, left lateral; B, dorsal; C, ventral; D, phallus, left lateral; E, phallus, dorsal. Abbreviation: app., appendage.

Figure 19 Caddisfly fauna from Bahia state, Brazil.A,Map of Bahia state,caddisfly records before 2009;B,Map of Bahia with caddisfly records in 2023; C,Caddisfly knowledge along time, description year of species which occur in state (gray),and first distributional records in state (black).

Figure 20 Distribution of the caddisfly species. A, new species, and records across the phytogeographic domains of Brazil; B, complete caddisfly record data in Bahia State; C, heatmap indicating the concentration of efforts.