Itauara marcellina sp. nov., 2023

Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2023, Protoptilinae (Trichoptera: Glossosomatidae) from Roraima state, northern Brazil: A new species of Itauara Müller 1888 and new distributional records for species of Protoptila Banks 1904, Zootaxa 5244 (1), pp. 96-100 : 97-98

publication ID	https://doi.org/ 10.11646/zootaxa.5244.1.9
publication LSID	lsid:zoobank.org:pub:F460B05C-500B-49E3-B4C5-302E112CC4FE
DOI	https://doi.org/10.5281/zenodo.7650856
persistent identifier	https://treatment.plazi.org/id/03FA1301-D364-FFD7-6FF4-AC5AFE8FC86C
treatment provided by	Plazi
scientific name	Itauara marcellina sp. nov.
status	sp. nov.

Treatment

Itauara marcellina sp. nov.

Figures: 1A–1C

Diagnosis. This new species belongs to the Itauara amazonica Species Group of Robertson & Holzenthal (2011), as recognized by the presence of a fused inferior appendage process. Known only from the male holotype, Itauara marcellina sp. nov. can be recognized by the presence of a pair of elongate, sclerotized horn-like lateral processes along the posterior margin of tergum X. This species is similar to I. peruensis Robertson & Holzenthal 2011 by having similarly shaped ventrolateral processes of tergum X. Itauara marcellina sp. nov. can be distinguished from I. peruensis by the phallicata with membranous, rounded, lateral flanges in the new species, but without lateral flanges in I. peruensis .

Description. Male (in alcohol). Body, wings, and appendages pale or tawny-brown in alcohol. Wings with conspicuous white spot at the arculus and faint transverse line along anastomosis. Forewing narrow past anastomosis, its apex acute. Forewing venation typical of the genus with forks I–III present. Hind wing margins nearly parallel, tapering only slightly past anastomosis; apical forks II, III, and V present. Tibial spurs 1,3,4; foretibial spur extremely reduced and hair-like. Sixth sternal process thumb-like, apex rounded, often associated with weak oblique apodeme posteriorly.

Male genitalia. Segment IX in lateral view ventrally short, much longer at mid-height, anterior margins rounded, posterolateral margins membranous or very slightly sclerotized ( Fig. 1A View FIGURE 1 ); sternum IX transversely narrow ( Fig. 1C View FIGURE 1 ). Tergum X incompletely fused to tergum IX, with membrane or lightly sclerotized region ventrolaterally ( Fig. 1A View FIGURE 1 ), subrectangular in dorsal view ( Fig. 1B View FIGURE 1 ); posterodorsal margin with pair of elongate, sclerotized, horn-like processes, apically pointed, projecting posterad ( Figs. 1A, 1B View FIGURE 1 , dm. pr.); ventrolateral margins each with flange-like process with several small, irregular, seta-bearing lobes ( Figs 1A, 1B View FIGURE 1 , vl. pr.). Inferior appendages fused as single, broad, irregular, setose process ( Fig. 1A View FIGURE 1 , inf. ap.), broadest basally, fused to phallobase basoventrally ( Fig. 1C View FIGURE 1 , inf. ap.). Parameres present, paired, arising basoventrally from fused endotheca and phallobase, sclerotized and rod-like, slender, elongate, recurved basally, nearly straight in mid-length, slightly upturned distally, pointed apically ( Figs. 1A, 1C View FIGURE 1 , pmr.). Phallobase reduced, membranous ( Fig. 1C View FIGURE 1 , phb.), difficult to discern in lateral view. Phallicata in lateral view forming short slightly sclerotized dorsal sheath ( Fig. 1A View FIGURE 1 , phc.), medially with pair of membranous rounded ventrolateral flanges fused mesobasally and projecting posteroventrad ( Fig. 1A View FIGURE 1 , phc. pr.), with U-shaped internal sclerite ( Fig. 1C View FIGURE 1 , phc. pr.). Endophallus in lateral view membranous and long, sinuous apically ( Fig. 1A View FIGURE 1 , enph.)

Female, larva, pupa, and egg. Unknown.

Holotype male. BRAZIL: Roraima: Iracema municipality, Vicinal Campos Novos (Fazenda Rancho Fundo), Second order stream, 2°21′26.22”N, 61°23′38.98″W, 209 m a.s.l., 16 Mar 2018. Pennsylvania light trap, J.L. Gama Neto, col. (alcohol; MPEG). GoogleMaps

Distribution. Brazil (Roraima, type locality only).

Etymology. The epithet “marcellina” is a diminutive for the Portuguese feminine noun “Marcella”, in honor of Marcella Passos Gama, daughter of the authors, affectionately nicknamed “marcellinha” (= little Marcella) by friends and family.