Anacroneuria ruschii, Novaes, Marcos Carneiro, Bispo, Pitágoras Da Conceição & Gonçalves, Maísa De Carvalho, 2016

Novaes, Marcos Carneiro, Bispo, Pitágoras Da Conceição & Gonçalves, Maísa De Carvalho, 2016, A new species of Anacroneuria Klapálek 1909 (Plecoptera: Perlidae) from Espírito Santo State, southeastern Brazil and comments on additional species, Zootaxa 4208 (1) : -

Anacroneuria ruschii n. sp.

Figure 2 (A–G)

Material examined. Holotype: male: Brazil, Espírito Santo State, Santa Teresa , S19o54’53.42’’ W40o33’40.36’’, 08–09.ix.2015, light trap, FFST ( CZNC) . Paratype; 1 male: Santa Teresa , S19o54’53.42’’ W40o33’40.36’’, 08– 09.ix.2015, light trap, FFST ( CZNC) ; Santa Teresa , S19o54’53.42’’ W40o33’40.36’’, 08–09.ix.2015, light trap, 2 females, FFST ( CZNC) .

Description. General color brown. Head brown with M-line, portions of clypeus and frons orange ( Fig. 2 A); lappets dark brown; clypeal area setose; post frontal line V-shaped; scape and pedicel dark brown; flagellum brown to dark brown; palpi brownish. Pronotum dark brown with darker rugosities ( Fig. 2 A). Legs brown to dark brown, tibia and tarsi darker. Wing membrane brown, veins dark brown. Cerci brown.

Male: Forewing length 8.1–8.3 mm. Hammer thin, longer than wide ( Fig. 2 B). Penial armature with a pair of medium distal membranous vesicles ( Fig. 2 C–D) and apex bottleneck-shaped with an opening; in lateral view, keel with a pointed protrusion between two flaps ( Fig. 2 C), in dorsal view, thimble-shaped ( Fig. 2 D); hooks relatively large, regularly curved and with apex acute ( Fig. 2 C).

Female: Forewing length 16.2–16.4 mm. Subgenital plate light brown 4-lobed ( Fig. 2 F) with a medial notch deeper. Egg: 0.225 mm x 0.145 mm ( Fig. 2 G).

Remarks. The overall color of this species is darker than typical species of the genus. In dorsal ( Fig. 2 D) and lateral ( Fig. 2 E) views, the penial armature resembles those of A. debilis and A. lencoensis Righi-Cavallaro et al.. 2013. However, in A. ruschii , the apex of penial armature and the apex of keel in lateral view are thinner. Furthermore, the vesicles in ventral view are smaller in A. ruschii . The hammer of A. ruschii is relatively acute and thin differing of those of A. debilis and A. lencoensis . The body size of A. ruschii is smaller than A. debilis but similar to that of A. lencoensis .

Etymology. The patronym honors Augusto Ruschi, a notable Brazilian naturalist who has spent most of his life devoted to the conservation of natural resources of Espírito Santo State, Brazil.

Figures

FIGURE 2. Anacroneuria ruschii n. sp. Male holotype: A. Head and pronotum (Scale bar: 1.0 mm); B. Hammer (Scale bar: 0.5 mm); Penial armature, C. Ventral view, D. Dorsal view, E. Lateral view (Scale bar: 0.5 mm). Female: F. Terminalia (Scale bar: 1.5 mm); G. Egg: (Scale bar: 0.2 mm).