Atopsyche (Atopsaura) beckeri Gomes & Calor, 2019

Gomes, Victor De Andrade & Calor, Adolfo Ricardo, 2019, Atopsyche Banks (Trichoptera, Hydrobiosidae): New species, redescription, and new records, Zootaxa 4567 (3), pp. 567-579 : 569-570

Atopsyche (Atopsaura) beckeri Gomes & Calor , new species

Figures 2 , 5

Diagnosis. This new species belongs to the A. (Atopsaura) batesi Group as indicated by the unpaired dorsal spine, bifurcate at the base, emerging from anterior region of phallic apparatus. Atopsyche (Atopsaura) beckeri n. sp. is similar to A. (Atopsaura) blahniki Santos & Holzenthal 2012 in the longitudinally long segment IX, in the slender parapods each with two apicodorsal projections, and in the broader apical half of the first article of each inferior appendage. Atopsyche (Atopsaura) beckeri n. sp. is similar to A. (Atopsaura) brachycerca Flint 1968a and A. (Atopsaura) cubana Flint 1968b in the shape of the dorsomesal projection of the first article of each inferior appendage and in the dorsal process of the phallic apparatus forked apically. The new species differs from these congeners by the preanal appendages being longer and more slender, in the broader second article of each inferior appendage, and in the broader forked apex of the dorsal projection of the phallic apparatus. This new species has filipods longer than parapods, the first article of each inferior appendage is larger apically than basally, with a dorsomesal projection shorter and more slender than the second article, and a forked dorsal process of the phallic apparatus.

Description. Length of each forewing 8.52–9.12 mm (n = 2). Overall body color yellow to dark brown. Frons and vertex of head with light yellowish setae. Antennal scapes dark brown with short setae; pedicels light brown, basal flagellomeres light brown, apical flagellomeres dark brown. Maxillary palp segments 1 and 2 with light and dark brown setae. Dorsum of thorax with yellowish and light brown setae. Overall color of wings brown, with some shades of dark brown; erect setae of veins dark brown. Forewing venation complete ( Fig. 2A ); R1 forked apically. Hind wings each with Sc and R1 incomplete, convergent but not reaching apical margin; fork V arising before middle of wing ( Fig. 2B ). Each side of sternum V with slender filament on anterodorsal margin as long as sternum. Sterna VI and VII each with posteromesal projections; anterior projection with spinelike setae and almost 3 times longer than posterior; posterior projection covered on ventral face by spinelike setae, and slightly shorter than sternum VII.

Genitalia. Segment IX longitudinally long, anterior margins convex dorsally and posterior margins convex ventrally in lateral view ( Fig. 5A ). Proctiger covered with minute setae, vertically short anteriorly, tall subapically, with acute apex blunt in lateral view. Parapods vertically tall, dorsal margin of each with anterodorsal projection, sinuous middle, and slender apex with two projections in lateral view. Filipods longer than parapods in lateral and dorsal views ( Figs. 5A, 5D ). Preanal appendages long and slender in lateral and dorsal views ( Figs. 5A, 5D ). Inferior appendages each with first article vertically taller apically than basally, with slightly basoventral projection in lateral view ( Fig. 5A ) and with cleaver-like dorsomesal process in ventral view ( Fig. 5B ); second article triangular, broader basally, with downcurved point at apex in lateral and ventral views ( Figs. 5A, 5B ). Phallic apparatus complex ( Figs. 5C, 5E ); phallotheca tall basally, with “beaks” upcurved and slightly acuminate in lateral view ( Fig. 5C ), slender and rounded apically in dorsal view ( Fig. 5E ); bearing unpaired dorsal process forked apically in lateral and dorsal views ( Figs. 5C, 5E ); pair of basoventral lobes thick and rounded apically ( Figs. 5C, 5E ); aedeagus slender, slightly upcurved, acute, almost as long as phallotheca, with basal sclerite.

Female and immatures. Unknown.

Holotype male. CUBA: Stgo, Sier Maestra, P. Cuba, elev. 1,500 m, 31.vii.1990, Becker, V. O. (pinned; IESHC).

Paratype. CUBA: Stgo, Sier Maestra, P. Cuba, elev. 1,500 m, 31.vii.1990, Becker, V. O., 0 1 male (pinned; NMNH) .

Etymology. This new species is named in honor of Dr. Vítor Becker (Instituto Uiraçú, Serra Bonita, Camacan, Bahia, Brazil) for his contributions to Neotropical entomology and Atlantic Forest conservation.

Distribution. Cuba (Santiago de Cuba).

Figures

FIGURE 5. Atopsyche (Atopsaura) beckeri Gomes & Calor new species, male. 5A, genitalia, left lateral, phallic apparatus omitted; 5B, left inferior appendage, ventral; 5C, phallic apparatus, left lateral; 5D, left parapod and preanal appendage, dorsal; 5E, phallic apparatus, dorsal.

FIGURE 1–3. 1. Atopsyche (Atopsyche) bravoi Gomes & Calor, new species, male. 1A, left forewing, ventral; 1B, left hind wing, ventral. 2. Atopsyche (Atopsaura) beckeri Gomes & Calor, new species, male. 2A, right forewing, dorsal; 2B, right hind wing, dorsal. 3. Atopsyche (Atopsaura) japi Gomes & Calor, new species, male. 3A, right forewing, dorsal; 3B, right hind wing, dorsal.