Metoisops

Herczek, Aleksander & Popov, Yuri A., 2014, Revision of the genus Metoisops (Hemiptera: Heteroptera, Miridae, Isometopinae) from late Eocene European amber, Zootaxa 3887 (3), pp. 401-421 : 403

Key to Metoisops spp.

1a. Pronotum very broad, not less than 2.4x wide as long......................................................... 2

1b. Pronotum width less than 2.4x as wide as long............................................................... 3

2a. Pronotum about 3 times wider than its length; head ca. 3x as wide as long; claval commissure rather short, ratio length of claval commissure/mesoscutum+scutellum = 0,93......................................... M. akingbohungbei sp. nov.

2b. Pronotum 2.4x as wide as long; head 2.5x as wide long; ratio length claval commissure/mesoscutum+scutellum = 1.26.......................................................................................... .. M. groehni sp. nov.

3a. Head more transverse, greater than 2.6x wide as long......................................................... 4

3b. Head not more than 2.5x as wide as long................................................................... 5

4a. Dorsal width of eye ca. 2x more than width of vertex; pronotum more transverse, not less than 2x as wide as long; ratio posterior width/anterior width = ca. 2.0................................................. M. kerzhneri Popov & Herczek

4b. Dorsal width of eye ca. 1.45x more than width of vertex, pronotum distinctly narrower, not less than 1.75x as wide as long; ratio posterior/anterior width = ca. 2.................................................... M. grabenhorsti sp. nov.

5a. Head 2.2–2.35x as wide as long.......................................................................... 6

5b. Head 2.5x as wide as long; ratio width of posterior/anterior margins of pronotum = 2.1–2.3........................... 7

6a. Ratio width of posterior/anterior margins of pronotum = 1.85–1.98; claval commissure shorter, ratio length claval commissure/ mesoscutum+scutellum = 1.26–1.27............................................... M. punctatus Popov & Herczek

6b. Ratio width posterior/anterior margins of pronotum = 1.65; claval commissure longer, ratio length claval commissure/ mesoscutum+scutellum = more than 1.5................................................... M. consimilis sp. nov.

7a. Mesoscutum broad, only ca. 1.8x shorter than scutellum length; hemelytra with scattered punctuate corium and clavus and delicate pubescence................................................................ M. punctatodiffusus sp. nov.

7b. Mesoscutum very narrow, not less than 4x shorter than scutellum................................................ 8

8a. Dorsal width of eye 1.58x more than width of vertex; mesoscutum 4.25x shorter than scutellum; scutellum and hemelytra more densely punctuated and pubescent; cuneus uniform colorized; scutellum slightly wrinkled and pubescent..................................................................................................... M. variabilis sp. nov.

8b. Dorsal width of eye 1.64x more than width of vertex; mesoscutum 4.0x shorter than scutellum; scutellum and hemelytra somewhat less densely punctuated and pubescent; apex of cuneus dark; scutellum shiny and inpunctate, with some hairs at its base................................................................................... M. intergerivus sp. nov.