Remenus, Ricker, 1952

Verdone, Chris J. & Kondratieff, Boris C., 2018, Holomorphology And Systematics Of The Eastern Nearctic Stonefly Genus Remenus Ricker (Plecoptera: Perlodidae), Illiesia 14 (5), pp. 81-125 : 89

publication ID	https://doi.org/ 10.5281/zenodo.4757871
publication LSID	lsid:zoobank.org:pub:AAEA5971-4C18-45C2-AA83-5DD3D622315D
DOI	https://doi.org/10.5281/zenodo.4765450
persistent identifier	https://treatment.plazi.org/id/671B126B-FFE2-FFE2-FF05-FCB1A9A19BFD
treatment provided by	Felipe
scientific name	Remenus
status

Treatment

Keys to Remenus Species

Adult males

1 Epiproct with a medial dorsal sclerite ( Figs. 23– 24 View Figs , 26–28 View Figs , 74–75 View Figs , 77–80 View Figs ) ……………………….... 2

1’ Epiproct without a medial dorsal sclerite ( Figs. 45–46 View Figs , 49–52 View Figs View Figs , 95–96 View Figs , 98–100 View Figs ) ………………...…. 3

2 Epiproct flattened laterally; terminating in a threadlike lash that greatly exceed the epiproct apex ( Figs. 23–24 View Figs , 26–28 View Figs ); Basal cowl clothed in dense golden-brown spinulae ( Figs. 23–24 View Figs ); tergum 9 with mediolateral patches of ~ 20 sensilla basiconica ( Fig. 23 View Figs ); pronotum mostly brown ( Fig. 22 View Figs ) …………………….… R. bilobatus View in CoL

2’ Epiproct dorsoventrally flattened; lacking a threadlike lash that greatly exceeds the epiproct apex ( Figs. 74–75 View Figs , 77–80 View Figs ); basal cowl covered in dense lightly pigmented spinulae ( Figs. 74–75 View Figs ); tergum 9 lacking sensilla basiconica ( Fig. 74 View Figs ); pronotum mostly pale ( Fig. 72 View Figs ) …….. R. duffieldi View in CoL

3 Epiproct widest toward apex in dorsal and lateral view, clavate; bearing a short translucent tube on apex ( Figs. 45–46 View Figs , 49–52 View Figs View Figs ); hemitergal lobes with <4 sensilla basiconica ( Figs. 45–50 View Figs View Figs ) …………………………………… R. daniellae View in CoL sp. n.

3’ Epiproct dorsoventrally flattened, widest basally or at mid-length in dorsal view, tongue-shaped ( Figs. 95–96 View Figs , 98–100 View Figs ); hemitergal lobes with 12– 20 sensilla basiconica ( Figs. 95–97 View Figs View Figs ) …………………………………………. R. kirchneri View in CoL

Adult females

1 Basolateral crease of subgenital plate nearly straight or convex posteriorly ( Figs. 29–30 View Figs , 81 View Fig ); subgenital plate broadly triangular ( Fig. 29 View Figs ), or rounded ( Figs. 30 View Figs , 81 View Fig ) …………………………... 2

1’ Basolateral crease of subgenital plate concave posteriorly ( Figs. 54–56 View Figs , 101–103 View Figs ); subgenital plate broadly rounded ( Fig. 54–55 View Figs , 101 View Figs ), occasionally with a shallow posteromedial emargination ( Fig. 56 View Figs , 102 View Figs ), or broadly triangular ( Fig. 103 View Figs ) ……………………………..................... 3

2 Subgenital plate broadly triangular ( Fig. 29 View Figs ) or rounded ( Figs. 30 View Figs ), extending ½ over sternum 9, or to the posterior margin of the sternum 9; pronotum mostly brown ( Fig. 22 View Figs ) …. R. bilobatus View in CoL

2’ Subgenital plate broadly rounded, elongate, extending ⅘ over of sternum 9 or slightly beyond the posterior margin of sternum 9 ( Fig. 81 View Fig ); pronotum mostly pale ( Fig. 72 View Figs ) ... R. duffieldi View in CoL

3 Subgenital plate broadly rounded ( Figs. 54–56 View Figs ), occasionally with a posteromedial emargination ( Fig. 56 View Figs ); basolateral margins convergent ( Figs. 54–56 View Figs ); found west of the French Broad River ( Fig. 115 View Fig ) ………………………. R. daniellae View in CoL sp. n.

3’ Subgenital plate broadly rounded ( Fig. 101–102 View Figs ), occasionally with a shallow posteromedial emargination ( Fig. 102 View Figs ), or broadly triangular ( Fig. 103 View Figs ); basolateral margins parallel; found east of the French Broad River ( Fig. 115 View Fig ) …………………………………………. R. kirchneri View in CoL