Baetidae, Leach, 1815

L, Carlos Naranjo, Peters, Janice G., del, Pedro López & Castillo, 2019, Ephemeroptera (Insecta) in Cuba, Insecta Mundi 2019 (736), pp. 1-52 : 20-21

Baetidae .

5(4).

—

Abdominal gills very broad with ventral recurved flaps ( Fig. 21c ); foreclaw with double row of long denticles ( Fig. 21a )............................ Callibaetis floridanus Banks

Abdominal gills oval or elongate-oval without ventral portion or flap ( Fig. 20d–e, 22c–e , 27 ); denticles on foreclaw absent ( Fig. 22a ) or present and short ( Fig. 25 , 33a )............. 6

6(5).

—

Abdominal segment 1 without gills, gills present on 2–7 only ( Fig. 20d); caudal filaments with two distinct color bands ( Fig. 20e–f)............... Americabaetis naranjoi (Kluge) Abdominal segments 1–7 with gills; caudal filaments without distinct bands............. 7

7(6).

— Claws apparently without denticles ( Fig. 22a ), although minute denticles may be present basally

( Fig. 33a ).................................................................. 8 Claws with visible denticles ( Fig. 25 )............................................ (10) 8(7).

—

Body length of mature nymphs <3 mm; abdominal tergum 9 with lateral white marking and with darker dorsal coloration ( Fig. 33b–c ); claws with row of minute denticles basally ( Fig. 33a ); outer basal margins of tibiae and tarsi without rows of setae................................................................... Paracloeodes lilliputian Kluge

Body length of mature nymphs> 3 mm; abdominal tergum 9 variable but without white lateral marking; claws without denticles ( Fig. 22a ); basal margins of tibae and tarsi with rows of setae ( Fig. 22b )................................................... Cloeodes (9)

9(8).

—

Color pattern somewhat variable, but middle abdominal terga (5–6) without contrasting dark marks in anteromedian margin ( Fig. 22c–f )................. Cloeodes superior Kluge Color pattern variable ( Fig. 23a–b,d ), but middle abdominal terga (5–6) usually with anteromedian,

contrasting dark marks ( Fig. 23a–b )....................... Cloeodes inferior Kluge

10(7).

—

Frontal margin (frons) of head flat, without keel between antennal bases ( Fig. 24c ); foreclaw with one long subapical seta ( Fig. 25b )............................. Caribaetis (11) Frontal margin (frons) of head with keel between antennal bases ( Fig. 24a–b ); foreclaw without apical seta ( Fig. 25a ).............................................. Fallceon (13)

11(10). Abdominal terga 2, 6–7 uniformly dark brown; terga 4 and 9 pale, other terga variable but usually with some submedian markings ( Fig. 32a–b )... Caribaetis alcarrazae (Kluge)

— Abdominal terga 2, 6–7 with weakly indicated markings on beige or brown background, terga 4 and 8–10 with similar markings on beige background ( Fig. 30–31 )................. 12

12(11). Mature nymphs relatively large (7.5 to 8 mm body length); dorsal margin of femora with many setae; rare............................... C. grandis (González-Lazo and Salles)

— Mature nymphs small (3 to 5 mm body length); dorsal margin of femora with few setae............................................................. C. planifrons (Kluge)

13(10). Abdominal gills 2–6 relatively long and narrow, at least as long as two abdominal segments ( Fig. 27f–g, 28 )..................................... Fallceon longifolius (Kluge)

— Abdominal gills 3–6 more oval ( Fig. 27a–e ), not more than 1.5 times length of an abdominal segments.................................................................... 14

14(13). Distal segment of labial palp apically broad ( Fig. 26a ); paraglossae narrow and pointed apically ( Fig. 26a ); rare........................................... F. testudineus (Kluge)

— Distal segment of labial palpi about same width as preceding segment ( Fig. 26b ); paraglossae broad and rounded ( Fig. 26b )................................................. 15

15(14). Abdominal gills widest medially ( Fig. 27a–d ); common................. F. poeyi (Eaton)

— Abdominal gills widest distally ( Fig. 27e ); rare....................... F. sextus (Kluge)

Figures

Figures 21–23. Baetidae. 21)Callibaetis floridanus. 21a) Foreclaw. 21b) Habitus.21c) Gill 2.22) Cloeodes superior. 22a) Foreclaw. 22b) Rows of setae on basal margin of tibia and tarsus. 22c) Abdomen with gills 3–7. 22d) Habitus. 22e) Habitus (pre-emergent).22f) Terga 3–10.23) Cloeodes inferior. 23a) Terga 3–10.23b) Terga 2–8.23c) Caudal filaments. 23d) Terga 2–10, variation.

Figures 24–30. Baetidae. 24) Front of head. 24a–b) Fallceon poeyi with keel. 24c) Caribaetis planifrons. 25) Foreclaw. 25a) Fallceon poeyi. 25b) Caribaetis planifrons (seta retouched). 26. Labium. 26a) Fallceon testudineus. 26b) F. sextus. 27) Abdominal gills. 27a–d) Fallceon poeyi. 27e) F. sextus. 27f–g) F. longifolius. 28. Fallceon longifolius, abdomen.28a) Ventral. 28b) Dorsal.29) Fallceon poeyi. 29a) Terga 2–10.29b) Habitus.30) Caribaetis planifrons, dorsal. Figures 26, 27d–f after Kluge (1992b).

Figures 31–35. Baetidae and Oligoneuriidae.31) Caribaetis planifrons¸ habitus. 32)Caribaetis alcarrazae, habitus. 32a) Lateral. 32b) Dorsal). 33. Paracloeodes lilliputian. 33a) Foreclaw. 33b) Habitus. 33c) Detail of marking on lateral abdominal segment 9. 34) Lachlania sp. from Panama. 34a) Ventral head capsule and anterior thorax. 34b) Habitus. 35) Lachlania abnormis, drawing from only Cuban record (Hagen 1868), one of 6 females collected by Ch. Wright.