CLADOENDESIS OF EPHEMEROPTERA

A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z 

(1) Mandibular tusks [see Ephemera/fg9 (2)] are vestigial, subequal to incisor (McCafferty & Edmunds 1973: Fig.11; McCafferty & Gillies 1979: Fig.8). This character is true at least for siamensis [E.] and evae [A.], whose larvae are described, while larvae of other species are unknown.

(2) Mesonotal suture [stretched backward by sides of median line – see Fimbriatotergaliae (2)] is modified: its lateral portion is approximated to lateroparapsidal suture, and median portion stretches along medioparapsidal suture up to its end; thus, in subimago the microtrichia-bearing sclerotized area (located anteriad of mesonotal suture) occupies the whole submedioscutum and is pointed posteriorly (Kluge 2004: Fig.71:F). Such shape of this area is unique (see Index of characters [2.2.8]). This character is know only for species examined, while for others mesonotal structure is not described.

(3) Hind wing is smaller, and basitornal margin of fore wing is shorter than in other Ephemera/fg10 (Demoulin 1955f: Fig.1a; McCafferty & Edmunds 1973: Fig.7–8; McCafferty & Gillies 1979: Fig.1–2; Elouard 1986b: Fig.2).

Variable characters of Afromera. Penis has no such rolled curved titillators as in Ephemera/fg11; titillators of other form can be present or absent; particularly in siamensis [E.], titillators are blunt and flat in subimago and absent in imago (Kluge 2004: Fig.72:C–D).