Isometopinae Fieber 1860
Creators: name: Akingbohungbe, A. E.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Miridae

description: Key to the species of Isometopinae as known in Europe and the Middle East  1. Male................................................................................................ 2  
- Female............................................................................................. 13  
2. Apical frontal margin finely carinate or marginate, more or less confluent with tylus and juga which are broadly visible in front (figure 2). Hemelytra mostly glassy hyaline or at least with broad glassy hyaline bands.............................. 3  
- Apical frontal margin strongly carinate, distinctly cut off and raised over base of tylus and juga which are either strongly deflexed or depressed (figure 6); if not, hemelytra distinctly opaque and frons ivory-white with contrasting dark punctures.. 5  
 3. Ocellus width equal to interocellar space; frons rugose punctuate........................................ yemenensis   
- Interocellar space at least 1.6x as broad as each ocellus; frons practically impunctate................................4  
 4. Ocelli whitish translucent, about 3.3x width of each apart; mesoscutum punctate; rostrum largely yellow-brown, reaching as far back as seventh abdominal sternite............................................................. carinifrons   
 - Ocelli together with surrounding annuli dark-red, about 1.6x width of each apart; mesoscutum impunctate; rostrum largely dark reddish-brown to black, reaching as far back as fourth abdominal sternite.......................... gharaati n. sp.   
5. Interocellar space equal to ocellus width................................................................... 6  
- Interocellar space at least 1.3x as broad as ocellus............................................................ 7  
 6. Head in front about 1.3x as broad as high; antennal segment III dark brown; cuneus pale yellow with apical mesal dark brown band........................................................................................ longirostris   
 - Head in front about 1.5x as broad as high; antennal segment III dark-red with pale basal and apical extremities; cuneus unicolourous reddish-brown......................................................................... vanharteni   
7. Interocellar space more than 2x as broad as ocellus........................................................... 8  
- Interocellar space less that 2x as broad as ocellus........................................................... 10  
 8. Head in front about 1.5x as broad as high; frons at level of ventral margin of eyes with ivory-white transverse stripes separated by distinct punctate grooves.................................................................... taeniaticeps   
- Head in front less than 1.5x as broad as high; frons devoid of distinct ivory-white transverse stripes as indicated above..... 9  
 9. Head from above rather strongly appressed, over 5x as broad as long; pronotum more than 3x as broad as long..... intrusus   
 - Head from above less strongly appressed, about 4x as broad as long or less; pronotum less than 3x as broad as long..................................................................................................... diversiceps   
 10. Head in front 1.2x as broad as high; dorsum largely pale testaceous to ivory-white with broad blue-black blotches and bands............................................................................................... mirificus   
- Head in front at least 1.3x as broad as high; dorsum either piceous to blackish or deep yellow to golden suffused with reddish................................................................................................... 11  
 11. Dorsum deep yellow to golden suffused with reddish; head in front about 1.32x as broad as high............... peregrinus   
- Dorsum piceous to blackish; head in front about 1.48x as broad as high.......................................... 12  
 12. Membrane of hemelytra densely microhairy, biareolate; gena relatively low, less than 0.1x as high as eye......... nigritulus   
 - Membrane of hemelytra glabrous, uniareolate; gena relatively higher, 0.2x as high as eye............. praetermissum n. sp.   
13. Head distinctly inclined forwards with frons broadly visible from above; pronotum strongly explanate laterally, anterior humeral angles prominently projected forwards so anterior margin forms distinct concavity around head.............. 14  
- Head distinctly vertical with frons barely visible from above; pronotum only finely explanate laterally; if strongly explanate, anterior humeral angles not or only weakly projected forwards so anterior margin is straight to weakly concave.............................................................................................................. 22  
14. Apical frontal margin strongly projected ventrad, forming flange-like hood over strongly depressed tylus and juga............................................................................................................ 15  
- Apical frontal margin not projected ventrad, not forming flange-like hood over tylus and juga which are only deflexed but not strongly depressed................................................................................... 21  
15. Frons at the level of ventral eye margins with at least three distinct ivory-white transverse stripes separated by dark punctate grooves............................................................................................ 16  
- Frons either devoid of the above transverse stripes or at best with a weakly defined pair............................. 20  
 16. Genae widely flanged laterally, distinctly bulging beyond eyes; antennal segment I pale................... quadrifasciatus   
- Genae not or only weakly flanged laterally beyond eyes; antennal segment I dark-red............................... 17  
 17. Rostrum reaching as far back as second abdominal sternite; frons with four triangular to rectangular ocelloid impressed spots............................................................................................... frontalis   
- Rostrum longer, reaching at least to fourth abdominal sternite; frons devoid of the above ocelloid impressed spots........ 18  
 18. Interocellar space about 5x as broad as ocellus....................................................... taeniaticeps   
- Interocellar space less than 4x as broad as ocellus........................................................... 19  
 19. Head in front about 1.4x as broad as high; interocellar space about 3.5x width of ocellus. Cuneus distinctly punctate..................................................................................................... nigritulus   
 - Head in front about 1.2–1.26x as broad as high; interocellar space about 2.0–2.5x width of ocellus. Cuneus impunctate......................................................................................... praetermissum n. sp.   
 20. Hemelytra largely dark reddish-brown with contrasting whitish v-shaped marking on disk; frons at apex with two pairs of irregularly-shaped black impressed markings separated by shallow punctate groove......................... diversiceps   
 - Hemelytra either largely yellow-brown with reddish tinge, or dark reddish-brown but devoid of any contrasting whitish vshaped marking on disk. Frons not as above........................................................... intrusus   
 21. Head, pronotum, and cuneus uniformly black......................................................... sepehrii   
- Head, pronotum, and cuneus largely pale to yellowish ochraceous.............................................. 23  
 22. Interocellar space about 4x as broad as ocellus; antennal segment II about 1.6x as long as segment III. Dorsum with more extensive dark markings than whitish............................................................... kaznakovi   
 - Interocellar space about 2.5x as broad as ocellus; antennal segment II relatively shorter, about 1.5x as long as segment III. Dorsum with more extensive whitish than dark markings................................................... mirificus   
 23. Dorsum dark reddish-brown with four broad strongly contrasting ivory-white vittae on the hemelytra. Scutellum similarly with broad lateral whitish vittae conjoined apically..................................................... quadrivittatus   
 - Dorsum dark reddish-brown with broad rather irregular pale to ivory-whitish transverse band across hemelytra and scutellum.......................................................................................... gharaati n. sp.
description: Published as part of Akingbohungbe, A. E., 2012, Two new species of Isometopus Fieber (Hemiptera: Heteroptera: Miridae: Isometopinae) and a key to all known species of the genus in Europe and the Middle-East, pp. 45-53 in Zootaxa 3175 (1) on pages 51-52, DOI: 10.11646/zootaxa.3175.1.3, http://zenodo.org/record/5247857