Neocloeon triangulifer

Herhold, Hollister W, Davis, Steven R, Degrey, Samuel P & Grimaldi, David A, 2023, COMPARATIVE ANATOMY OF THE INSECT TRACHEAL SYSTEM PART 1: INTRODUCTION, APTERYGOTES, PALEOPTERA, POLYNEOPTERA, Bulletin of the American Museum of Natural History 459 (1), pp. 1-184 : 1-184

Neocloeon triangulifer subimago

“Triangle small minnow mayfly”

Figures 24 (lateral), 25 (dorsal, ventral)

Plates 14 (lateral), 15 (dorsal, ventral)

DESCRIPTION: BODY: Several alimentary canal air spaces present, fusing into single one in adult.

HEAD: H-DCT and H-VCT similar in size, extend into head capsule from prothorax.

THORAX: T1-DVi branches from H-VCT on left side, H-DCT on right.

ABDOMEN: A2..7-Gi gill attachments visible laterally on A n -DLT, midway between spiracles; A1-Gi on posteroventral extension from A1-S, reduced in adult (no other vestiges of gill attachment sites present in adults). Several dorsal visceral tracheae extend anteriorly beyond segment boundaries; ventral Vi (retained) within segment.

Figures

FIGURE 24. Neocloeon triangulifer (Ephemeroptera: Baetidae) subimago lateral view.

FIGURE 25. Neocloeon triangulifer (Ephemeroptera: Baetidae) subimago dorsal (left) and ventral (right) views.