Isometopus, Çerçi & Dursun, 2017

Çerçi, Bariş & Dursun, Ahmet, 2017, Isometopus anlasi sp. nov. (Heteroptera: Miridae) from Turkey, Zootaxa 4353 (2) : -

Key to the species of Isometopus as known in Europe and the Middle East

(based on Akingbohungbe 2012 and Housseini 2017)

1 Male........................................................................................................................................................................................ 2

- Female .................................................................................................................................................................................. 15

2 Apical frontal margin finely carinate or marginate, more or less confluent with tylus and juga which are broadly visible in front. 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; 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 Akingbohungbe 2003

- 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 Akingbohungbe 2006

- 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 Akingbohungbe 2012

5 Interocellar space sub-equal or equal to ocellus width .......................................................................................................... 6

- Interocellar space at least 1.3x as broad as ocellus ................................................................................................................ 9

6 Scutelum laterally with two pale elliptic spots ................................................................................................. anlasi sp.nov.

- Scutellum without such colouration pattern.......................................................................................................................... 7

7 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 Josifov 1993

- Head in frontal view>1.3× as broad as high, cuneus not as above ...................................................................................... 8

8 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 Akingbohungbe 2006

- Head in frontal view about 1.6× as broad as high, cuneus translucent, internally with a pale brown marking....................... .......................................................................................................................................................linnavourii Housseini 2017

9 Interocellar space more than 2x as broad as ocellus ........................................................................................................... 10

- Interocellar space less that 2x as broad as ocellus .............................................................................................................. 12

10 Head in front about 1.5x as broad as high; frons at level of ventral margin of eyes with ivory-white transverse stripes sepa- rated by distinct punctate grooves ......................................................................................................taeniaticeps Puton 1898

- Head in front less than 1.5x as broad as high; frons devoid of distinct ivory-white transverse stripes as indicated above 11

11 Head from above rather strongly appressed, over 5x as broad as long; pronotum more than 3x as broad as long ................. ............................................................................................................................................ intrusus ( Herrich-Schaeffer 1835)

- Head from above less strongly appressed, about 4x as broad as long or less; pronotum less than 3x as broad as long.......... ..................................................................................................................................................... diversiceps Linnavuori 1962

12 Head in front 1.2x as broad as high; dorsum largely pale testaceous to ivory-white with broad blue-black blotches and bands......................................................................................................................................................................................... .................................................................................................................................................. mirificus Mulsant & Rey 1879

- Head in front at least 1.3x as broad as high; dorsum either piceous to blackish or deep yellow to golden suffused with red- dish ...................................................................................................................................................................................... 13

13 Head in front about 1.32x as broad as high......................................................................... peregrinus Akingbohungbe 1996

- Head in front about 1.48x as broad as high.......................................................................................................................... 14

14 Membrane of hemelytra densely microhairy, biareolate; gena relatively low, less than 0.1x as high as eye .......................... ............................................................................................................................................... nigritulus Akingbohungbe 1996

- Membrane of hemelytra glabrous, uniareolate; gena relatively higher, 0.2x as high as eye ................................................... ....................................................................................................................................... praetermissum Akingbohungbe 2012

15 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 ...................... 16

- Head distinctly vertical with frons barely visible from above; pronotum only finely explanate laterally; if strongly explan- ate, anterior humeral angles not or only weakly projected forwards so anterior margin is straight to weakly concave...... 24

16 Apical frontal margin strongly projected ventrad, forming flange-like hood over strongly depressed tylus and juga........ 17

- Apical frontal margin not projected ventrad, not forming flange-like hood over tylus and juga which are only deflexed but not strongly depressed .......................................................................................................................................................... 23

17 Frons at the level of ventral eye margins with at least three distinct ivory-white transverse stripes separated by dark punc- tate grooves........................................................................................................................................................................... 18

- Frons either devoid of the above transverse stripes or at best with a weakly defined pair .................................................. 21

18 Rostrum reaching as far back as second abdominal sternite; frons with four triangular to rectangular ocelloid impressed spots ......................................................................................................................................... frontalis Akingbohungbe 1996

- Rostrum longer, reaching at least to fourth abdominal sternite; frons devoid of the above ocelloid impressed spots ........ 19

19 Interocellar space about 5x as broad as ocellus ................................................................................. taeniaticeps Puton 1898

- Interocellar space less than 4x as broad as ocellus ............................................................................................................. 20

20 Head in front about 1.4x as broad as high; interocellar space about 3.5x width of ocellus. Cuneus distinctly punctuate ...... ............................................................................................................................................... nigritulus Akingbohungbe 1996

- 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 Akingbohungbe 2012

21 Scutellum laterally with two pale elliptic spots ............................................................................................... anlasi sp. nov.

- Scutellum without lateral pale spots ................................................................................................................................... 22

22 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 Linnavuori 1962

- 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 ( Herrich-Schaeffer 1835)

23 Head, pronotum, and cuneus uniformly black ........................................... sepehrii Linnavuori, Sarafrazi & Housseini 1998

- Head, pronotum, and cuneus largely pale to yellowish ochraceous..................................................................................... 25

24 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 Kiritshenko 1939

- 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 Mulsant & Rey 1879

25 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 Akingbohungbe 2003

- Dorsum dark reddish-brown with broad rather irregular pale to ivory-whitish transverse band across hemelytra and scutel- lum .......................................................................................................................................... gharaati Akingbohungbe 2012