Key to Males of Central American Diplonevra

1 Hind tibia with 3–5 anterodorsal setae; with 1 long, extremely thick, most posteroventral seta on right side of epandrium (Figs. 20, 22) ....................................................... 2

­ Hind tibia without anterodorsal setae; epandrium without such thickened seta (Figs. 21, 23–25) ..................................................................................................................... 3

2 Ventrobasal region of posterior face of hind femur with many short, thick setae (Fig. 1); forelegs and halter dark brown; palpus brown....................... D. ereba new species

­ Ventrobasal region of posterior face of hind femur with several thin setae (Fig. 3); forelegs yellow; halter yellow; palpus orange......................... D. goliatha new species

3 Posterior face of hind trochanter with several short, thick setae (Figs. 4, 12); base of posterior face of hind femur with relatively long setae (Figs. ##); posterior margin of right side of epandrium with long, subequal posteroventral setae (Figs. 23, 25)....... 4

­ Posterior face of hind trochanter lacking short, thick setae (Figs. 2, 5, 7, 9, 10) except for 1–3 longer setae ventrally; base of posterior face of hind femur with relatively short setae (e.g. Figs. 5, 7); posterior margin of right side of epandrium with shorter setae ...................................................................................................................................... 5

4 Ventrobasal region of posterior face of hind femur with process containing 3 long, thick setae and several shorter setae (Fig. 4); costal sector 2 much longer than 3 (mean costal sector ratio 5.7:2.3:1.0) (Fig. 17) ............................. D. hypermeka new species

­ Ventrobasal region of posterior face of hind femur with process containing two thick setae and one much thinner seta at apex (Fig. 12); costal sector 2 subequal in length to sector 3 (mean costal sector ratio 3.3:1.1:1.0) (Fig. 19).... D. truncatiseta new species

5 Cercus yellow, rarely yellowish­brown; ventral region of posterior face of hind trochanter with 2 (rarely 3) long, thick setae (Fig. 9) and dense, extremely fine setae

present in lateral region (Fig. 5, ls) .. .......................................... D. setigera (Malloch) ­ At least basal two­thirds of cercus dark brown; ventral region of posterior face of hind trochanter with 1 long, thick seta (Fig. 2) and lacking setae in lateral region ................ ................................................................................................... D. gnoma new species