Demoulinia Gillies 1990

Kluge, Nikita J., 2020, Demoulinia Gillies 1990 and two unnamed genera of the plesiomorphon Protopatellata (Ephemeroptera, Baetidae) from South Africa, Zootaxa 4820 (3), pp. 438-464 : 439

Demoulinia Gillies 1990

( Figs 1–71 )

Demoulinia Gillies 1990: 125 (imago, larva).

Type species: Centroptilum crassi Demoulin 1970 (objective synonym of Centroptilum pulchrum Crass 1947 , nom. praeocc.).

Figures

FIGURES 1–5. Larva of Demoulinia crassi. 1, Female larva of last instar; 2–3, exuviae of male larvae: 2, left half of prothorax and mesothorax; 3, abdomen; 4, abdomen of male subimago extracted from mature larva (to show hypodermal larval coloration); 5, tergalius III.

FIGURES 6–12. Labrum of Demoulinia spp., dorsal view. 6–7, D. insularis (holotype). 8–12, D. crassi.

FIGURES 13–20. Mandibles of Demoulinia crassi. 13, 16, 19, left mandible; 14, 17, 20, right mandible; 15, apex of right mandible, proximal view (inc, incisor; kd, kinetodontium; prs, prostheca).

FIGURES 21–25. Demoulinia spp. 21–23, D. crassi; 24–25, D. insularis (holotype); 21, 22, 24, maxilla (21, with focus on ventral side; 22, with focus on dorsal side; d1, d2, d3, dentisetae; p1, p2, p3, segments of maxillary palp); 23, 25, hypopharynx and superlingua.

FIGURES 26–31. Labium of Demoulinia crassi. 26, cross section of glossae and paraglossae; 27, labium and maxilla; 28–31, exuviae of glossae, paraglossae and labial palp: 28–29, with focus on ventral side; 30–31, with focus on dorsal side (gl:dl, dorsolateral row of stout setae on glossa; gl:m, median row of stout setae on glossa; gl:vm, setae corresponding to ventro-median row of glossa; pg:dm, dorso-median row of long setae on paraglossa; pg:la, latero-apical long setae of paraglossa; pg:vm, long setae corresponding to ventro-median row of paraglossa).

FIGURES 32–38. Larval legs of Demoulinia spp. 32–37, D. crassi: 32, exuviae of hind leg; 33, inner side of fore tarsus; 34, femoral-tibial of hind leg, focus on anterior side; 35–37, claws. 38, D. insularis (holotype), fragment of claw with subimaginal claws inside (arrow shows row of vestigial denticles on inner side).

FIGURES 39–44. Exuviae of larval abdomen of Demoulinia spp. 39–43, D. crassi: 39, lateral and posterior area of abdominal tergum VII; 40, anterior-lateral area of abdominal sternum VI; 41, caudalii; 42, fragment of cercus; 43, paraproct. 44, D. insularis (holotype), median margin of paraproct (scale bar refers to Figs 39, 40, 42, 43).

FIGURES 45–51. Demoulinia crassi, tergalii I–VII.

FIGURES 52–56. Demoulinia crassi. 52–53, male imago; 54–56, subimaginal exuviae: 54, left half of mesonotum; 55, abdomen; 56, fragment of pleuron with postsubalar sclerite.

FIGURES 57–61. Male genitalia of Demoulinia spp. 57, D. insularis (paratype of D. assimilis), subimaginal gonostyli under larval cuticle. 58–61, D. crassi: 58, subimaginal gonostyli extracted from larva; 59, imaginal genitalia; 60–61, apex of imaginal gonostylus.

FIGURES 62–66. Male genitalia of Demoulinia crassi. 62, penis, ventral view (left muscles not shown); 63, genitalia, ventral view (penis dotted; left gonovectal muscle and right styligeral muscle not shown); 64, penis (dotted), posterior view (left muscle not shown); 65, subimaginal gonostyli crumpled under larval cuticle; 66, exuviae subimaginal of gonostyli (gd, gonoduct; gs1, gs2, gs3, segments of gonostylus; m.gv, gonovectal-sternal muscle; m.g-t, gonovectal-tergal muscle; m.pp, paces of attachment of muscles going to paraprocts; m.sg, sterno-styligeral muscle; usg, unistyliger).

FIGURES 67–70. Females of Demoulinia crassi. 67–68, female imago; 69–70, subimaginal exuviae of tibia and tarsus: 69, middle leg; 70, fore leg.

FIGURE 71. Egg of Demoulinia crassi.