Allocapnia Claassen, 1928

Murányi, Dávid, Gamboa, Maribet & Orci, Kirill Márk, 2014, Zwicknia gen. n., a new genus for the Capnia bifrons species group, with descriptions of three new species based on morphology, drumming signals and molecular genetics, and a synopsis of the West Palaearctic and Nearctic genera of Capniidae (Plecoptera), Zootaxa 3812 (1), pp. 1-82 : 14

Allocapnia Claassen, 1928

( Figs. 41 , 192 )

Capnella Claassen, 1924 — Claassen 1924: 43. (original description, type species Capnella granulata Claassen, 1924 ).

Allocapnia Claassen, 1928 — Claassen 1928: 667. (replacement name for Capnella Claassen, 1924 preoccupied by Capnella Gray, 1869 ; type species Capnella granulata Claassen, 1924 ); Claassen 1940: 89. (synonymy of Capnellula Strand, 1935 with Allocapnia Claassen, 1928 ); Ross & Ricker 1971: 7. (revision).

Capnellula Strand, 1935 — Strand 1935: 304. (unnecessary replace name for Capnella Claassen, 1924 , type species not designated).

Diagnosis. Male epiproct: B-scl medium sized to large, bearing small Ll, fused with Ep-scl; Lb-scl large, divided from Ep-scl; Ep-scl laterally divided along the entire length without connecting membrane, ventrally entire, caudal setae present; I-scl and Ec absent. Male Pp: apical part long and tapering; Fp medium long and wide, divided from Rp. Male Sg: fused with St 9 and Tg 9, vesicle lacking. Female Sg: pointed or rounded, narrower than St 8; inner and lateral sclerites absent. Male tergites: Tg 8 or Tg 7–8 with process. Ventral thoracic sclerites: MPrs elliptical, MeFs triangular, MeFsp separated from MePfs. Macropterous wings: forewing A1 beyond a, and R1 before r straight; one or two crossveins between M and Cu1.

Species included. 47 valid species from the East Nearctic ( DeWalt et al. 2014); 24 of these examined (see Appendix 1).

Remarks. On the basis of comparative morphological studies of the terminalia of the above 24 species, there is no doubt that the polytypic West Palaearctic species, C. s.l. vidua , can be placed into to this genus (see Capnia sensu lato, and Figs. 5–6 , 25 of C. s.l. vidua possessing all the diagnostic features discussed above). However, molecular studies have indicated that the distance of P= 0.215 between C. s.l. vidua and the genotype A. granulate is an indication that both taxa may not be congeneric ( Fig. 192 ).

Figures

FIGURE 192. Phylogenetic tree of cox1 including Zwicknia Murányi, gen. n. with our accession codes (300941-301003), and GenBank closest species (with alphanumeric accession codes) as outgroup. MP and ML had same topology. Numbers on braches are ML/MP bootstrap values>50%. Species names right to the tree refer to morphological species. P-Distance table is showed.

FIGURES 32–48. Male terminalia of Capniidae, ventral view—32: Zwicknia bifrons (Newman); 33: Bolshecapnia gregsoni (Ricker); 34: Eucapnopsis stigmatica transversa Aubert; 35: Isocapnia grandis (Banks); 36: Capnia s.l. arensi Zhiltzova; 37: C. s.l. prolongata; 38: C. s.l. pedestris Kimmins; 39: C. s.s. nigra (Pictet); 40: Arsapnia decepta Banks; 41: Allocapnia granulata (Claassen); 42: Mesocapnia silvatica Raušer; 43: Capnura venosa Banks; 44: Utacapnia lemoniana (Nebeker & Gaufin); 45: Paracapnia opis (Newman); 46: Nemocapnia carolina Banks; 47: Capnopsis schilleri schilleri (Rostock); 48: Capnioneura nemuroides Ris (C: cercus; Ep-scl: main epiproct sclerite; Fp: fusion plate; Pp: paraproct; Sg: subgenital plate; St 9: sternite 9; Tg 9: tergite 9; Tg 10: tergite 10; Vv: ventral vesicle)—scale 1 mm.

FIGURES 1–6. Male terminalia of West Palaearctic Capniidae—1–2: Zwicknia bifrons (Newman); 3–4: Capnia s.s. nigra (Pictet); 5–6: Capnia s.l. vidua Klapálek; 1, 3, 5: dorso-caudal view; 2, 4, 6: ventro-caudal view (B-scl: basal sclerite; Cs: caudal setae; Ec: eversible crest; Ep-scl: main epiproct sclerite (shaded in grey); I-scl: inner sclerite; Lb-scl: laterobasal sclerite; Ll: lower limb; Tg 10: tergite 10)—not to scale.

FIGURES 23–31. Male paraprocts and fusion plate of Capniidae, dorso-lateral view—23: Zwicknia bifrons (Newman); 24: Capnia s.s. nigra (Pictet); 25: Capnia s.l. vidua Klapálek; 26: Capnia s.l. prolongata Zhiltzova; 27: Capnia s.l. pedestris Kimmins; 28: Capnia s.l. arensi Zhiltzova; 29: Bolshecapnia gregsoni (Ricker); 30: Isocapnia grandis (Banks); 31: Eucapnopsis brevicauda (Claassen) (Fp: fusion plate; Pp: paraproct; Rp: retractoral plate)—not to scale.