Key to the species of Triznaka

1 Male: Epiproct present (Figs. 7, 8).……………. 2

1’ Female: Subgenital plate present (Figs. 2, 10) ... 5

2 Aedeagus with numerous large dark ventral spines at base (Baumann and Kondratieff 2008, figs. 12-14, 22, 29); pronotal rugosities strongly marked with black.………………….…. T. pintada

2’ Aedeagus lacking large dark ventral spines at base, rugosities unmarked or lightly marked in black ……………………………………...…....….. 3

3 In ventral view, aedeagus with a distinct longitudinal band of reddish-brown setae (Figs. 3- 6, 11, 12) …………………..….………… T. wallowa

3’ In ventral view, aedeagus lacking a distinct longitudinal band of reddish-brown setae.…… 4

4 In ventral view, aedeagus midlength with a broad mushroom- shaped patch of long, golden hairs (Baumann and Kondratieff 2008, figs. 15-17, 23, 24, 31); aedeagus ringed with a subapical band of raised reticulations (Baumann and Kondratieff 2008, figs. 15-17, 23, 24, 31); median pronotal stripe wide in entire length ……………. T. signata

4’ In ventral view, basal half of aedeagus sparsely covered with thin hair-like setae (Baumann and Kondratieff 2008, figs. 18-20), medially with an irregular elongate patch of thin spines (Baumann and Kondratieff 2008, figs. 20, 33); subapically beyond median lobe, spines comb-like, triangular process ventrally at apex (Baumann and Kondratieff 2008, figs. 34-36); pronotal stripe narrow, wider anteriorly and posteriorly ……………………………………...…… T. sheldoni

5 Apical margin of subgenital plate rounded (Baumann and Kondratieff 2008, figs. 40, 41); median pronotal stripe uniformly wide in entire length ……………………………...…….. T. signata

5’ Apical margin of subgenital plate truncate or notched (Baumann and Kondratieff 2008, figs. 38, 42-44) (Figs. 2, 10); median pronotal stripe not of uniform width ……………………….……………. 6

6 Apical margin of subgenital plate truncate entire to slightly emarginate (Baumann and Kondratieff 2008), figs. 37-39); pronotal rugosities strongly marked with black ………………….…. T. pintada

6’ Apical margin of subgenital plate usually deeply emarginate to notched (Baumann and Kondratieff 2008, figs. 42, 43) (Figs. 2, 10); pronotal stripe wider anteriorly and posteriorly (Fig. 1); rugosities unmarked or lightly marked with black ..…….. 7

7 Subgenital plate broad at apex (Baumann and Kondratieff 2008, figs. 42, 44) ……….. T. sheldoni

7’ Subgenital plate narrowered at apex (Figs. 2, 10) …………………………………...………. T. wallowa