Chimarra (Chimarra) bidens, Ulmer, 1909

Queiroz, Larissa L., Dias, Everton S. & Calor, Adolfo R., 2020, A new species of Chimarra Stephens 1829 (Trichoptera: Philopotamidae) and new caddisfly records from Rio Grande do Norte State, Brazil, Zootaxa 4885 (1), pp. 99-106 : 103

Key to males of Chimarra (Chimarra) bidens Species Group (adapted from Blahnik 1998)

1 Segment X mesal lobe sub-rectangular, with apex broad in lateral view; inferior appendages each with a pronounced acute apicodorsal projection in lateral view ( Fig. 2C )................................. Chimarra (Chimarra) potiguar n. sp.

- Segment X mesal lobe with apex acute in lateral view; inferior appendages without acute subapicodorsal projections in lateral view (fig. 54A in Blahnik 1998).......................................................................... 2

2 (1) Inferior appendages each with dorsal process narrow, attenuate, acute apically in lateral view (fig. 57A in Blahnik 1998)................................................................................ Chimarra (Chimarra) woldai

- Inferior appendages each with dorsal process not acute in lateral view (fig. 56A in Blahnik 1998)...................... 3

3 (2) Inferior appendages each with dorsal process distinctly narrowed apically, apex bifid (figs 56C, 56D in Blahnik 1998); preapical protuberance of inferior appendage only suggestively developed in lateral view (fig. 56A in Blahnik 1998)................................................................................... Chimarra (Chimarra) haesitationis

- Inferior appendages each with dorsal process not bifid, less narrowed apically (figs. 52C, 52D in Blahnik 1998); preapical protuberance of inferior appendage present or not............................................................ 4

4 (3) Inferior appendages very elongate, each with apex expanded and weakly dentate (not incurved and flattened), proximal surface with preapical protuberance, extending nearly to apex; phallotheca short (fig. 52F in Blahnik 1998)............................................................................................... Chimarra (Chimarra) antilliana

- Inferior appendages not as elongate, each with apex incurved and at least somewhat flattened (fig. 55A in Blahnik 1998), proximal surface with preapical protuberance or not, phallotheca normal in length (not short)............................. 5

5 (4) Inferior appendages less elongate, without preapical protuberances, apices very distinctly flattened and chisel-like (fig. 55A in Blahnik 1998)............................................................. Chimarra (Chimarra) duckworthi

- Inferior appendages elongate, each with preapical protuberance, apex less distinctly flattened and chisel-like (figs 54C, 54D in Blahnik 1998)........................................................................................ 6

6 (5) Apices of inferior appendages flattened, not at all rounded; lateral lobes of tergum X with apices abruptly rounded; sensillabearing protuberances of lateral lobes deflected ventrad (fig. 53A in Blahnik 1998).......... Chimarra (Chimarra) bidens

- Apices of inferior appendages slightly rounded, less distinctly flattened; lateral lobes of tergum X, in dorsal view, with apices broadly rounded; sensilla-bearing protuberances of lateral lobes laterally protruding, not deflected ventrad (fig. 54 in Blahnik 1998)....................................................................... Chimarra (Chimarra) caribea

Figures

FIGURE 2. Chimarra (Chimarra) potiguar n. sp., male. 2A, right forewing, dorsal; 2B, right hind wing, dorsal; 2C, genitalia, left lateral; 2D, genitalia, dorsal; 2E, phallic apparatus, everted, dorsal; 2F, phallic apparatus, left lateral; 2G, inferior appendages, ventral.Abbreviations: Dc = discoidal cell; Endo = Endotheca; Endo spines = Endothecal spines; Inf ap = Inferior appendage (paired); IX = abdominal segment IX; I, II, III, V = apical forks I, II, III, and V; Lat lobe = Lateral lobes of segment X (paired); Mes lobe = Mesal lobe of the segment X; Pha = Phallotheca; Pha sc cpx = Phallotremal sclerite complex; Pre ap = Preanal appendage (paired); Sen = sensillae; V proc = posteroventral process of segment IX; VIII = abdominal segment VIII.