Crassabwa, Lugo-Ortiz & McCafferty, 1996

Kluge, Nikita J., Gattolliat, Jean-Luc & Salles, Frederico F., 2017, Redescription of the Afrotropical genus Crassabwa Lugo-Ortiz & McCafferty 1996 (Ephemeroptera: Baetidae: Protopatellata), Zootaxa 4350 (3), pp. 401-435 : 407

Key to larvae of Crassabwa

1. In last larval instar, tergalius I in proximal half with anal portion usually bent ventrally ( Figs 23 , 84 ); other tergalii II–VII without such overturned portion ( Crassabwa )...................................................................2

- In last larval instar, tergalii not as above............................................................ other taxa.

2. In last instar larva, cuticle of fore protopteron with dark lines corresponding to convex longitudinal veins only ( Fig. 4 ). Mola of left mandible with even row of denticles ( Fig. 8 ). First tergalius relatively narrow (in spread condition) ( Fig. 24 ).................................................................................................. Crassabwa flava

- In last instar larva, cuticle of fore protopteron with dark lines corresponding to convex, concave and cross veins ( Fig. 62 ). Mola of left mandible with tubercles bearing denticles ( Fig. 81 ). First tergalius relatively wide (in spread condition) ( Fig. 8 5 )................................................................................................... 3

3. Claw relatively short, with portion from distal denticle to apex shorter than portion from distal denticle to base ( Figs 66 , 95 )................................................................................ Crassabwa ludmilae sp. n.

- Claw relatively long, with portion from distal denticle to apex longer than portion from distal denticle to base ( Fig. 126 ).................................................................................... Crassabwa ameliae sp. n.

Figures

FIGURES 23 – 30. Crassabwa flava. 23, tergalius I of last instar larva in natural condition; 24, tergalius I spread on slide; 25, tergalius II; 26, costal rib of tergalius of penultimolarva (developing compressed ultimolarval denticles shown by interrupted line); 27 and 28, tergalii VI and VII; 29, tergalii II (in normal condition) and III (with dorsal cuticle partly separated from tissues); 30, enlarged fragment of this separated cuticle.

FIGURES 84 – 95. Crassabwa ludmilae sp. n. 84, tergalius I of last instar larva in natural condition; 85, tergalius I spread on slide; 86 – 91, tergalii II – VII; 92, tergalius V with part of dorsal cuticle detached; 93, enlarged fragment of its detached cuticle; 94, part of cuticle from abdominal tergum III; 95, claw (84 – 93 and 95, holotype).

FIGURES 1 – 4. Crassabwa flava, last instar larvae. 1 – 3, dorsal view; 4, exuviae of half of pronotum and mesonotum.

FIGURES 5 – 9. Crassabwa flava. 5, labium (at left ventral view, with muscles of glossa, paraglossa and palp shown by interrupted lines; at right dorsal view); 6, apex of maxilla, dorsal view; 7, dentisetae and setae of inner-dorsal row of another individual; 8 and 9, left and right mandible of penultimolarva with developing ultimolarval mandibles inside. Abbreviations: ds 1, ds 2, ds 3, dentisetae.

FIGURES 60 – 65. Crassabwa ludmilae sp. n., holotype, ultimolarval exuviae. 60, abdominal terga and caudalii; 61, head with labrum and right mandible; 62, exuviae of half of pronotum and mesonotum; 63, fragment of cercus; 64, hind leg (triangle shows point where patella-tibial suture crosses inner margin); 65, abdominal terga IX and X.

FIGURES 76 – 83. Crassabwa ludmilae sp. n. 76 – 77, right and left mandibles; 78 – 79, biting edges of left and right mandibles of penultimolarva with developing ultimolarval mandibles inside; 80 – 82, biting edges of left and right mandibles of ultimolarva; 83, exuviae of labium with focus on ventral side.

FIGURES 66 – 75. Crassabwa ludmilae sp. n., larva. 66, claw; 67, fore leg (anterior view); 68, paraproct; 69 – 70, right and left mandibles (ventral view); 71, labrum (at left ventral view, at right dorsal view); 72, maxilla; 73, labial palp (ventral view); 74, labium (at left ventral view, at right dorsal view); 75, hypopharynx and superlinguae.

FIGURES 125 – 132. Crassabwa ameliae sp. n., larva. 125, fore leg (anterior view); 126, claw; 127 – 128, right and left mandibles, ventral view; 129, labrum (at left ventral view, at right dorsal view); 130, maxilla; 131, labium (at left ventral view, at right dorsal view); 132, hypopharynx and superlinguae.