Balaustium, von Heyden, 1826

Noei, Javad, Ersin, Firdevs & Çakmak, İbrahim, 2019, A new larval species of Balaustium (Acari: Actinotrichida: Erythraeidae) from Turkey, Turkish Journal of Zoology 43 (1), pp. 30-42 : 37-40

Key of larval species of the genus Balaustium

1. Palpfemur with two setae............................................2

- Palpfemur with one seta ............................................... 3

2. With crista metopica and scutalae on scutum ............ ............................................ B. leanderi (Haitlinger, 2000)

- Without crista metopica and scutalae off scutum ........ ...................................... B. cristatum Meyer & Ryke, 1959

3. fn BFe 4-4-3 .................................................................. 4

- fn BFe 4-4-2 ................................................................. 10

4. fn TFe 7-6-6, Ti III 128–138 .......................................... .................. B. hernandezi Mąkol, Arijs & Wackers, 2012

- fn TFe 5-5-4, or 5-5-5 and Ti III <104 ....................... 5

5. Palpgenu with two setae, two pairs of scutalae on scutum or scutalae off scutum ....................................... 6

- Palpgenu with three or four setae, three pairs of scutalae on scutum .......................................................... 8

6. Two pairs of scutalae on scutum ................................... .......................... B. biscutalae Mayoral & Barranco, 2009

- Scutalae off scutum ....................................................... 7

7. Ge I with eight normal setae, Ta III 50–60, Ti III 72– 87, with 14–20 setae in the area between coxae II and III, NDV 120–147............ B. izmirensis Noei & Ersin sp. nov.

- Ge I with nine normal setae, Ta III 75–85, Ti III 89–97, with 26 setae in the area between coxae II and III, NDV 159–160 .................. B. yousifi Kamran and Alatawi, 2014

8. Palpgenu with four setae .... B. brunoni Haitlinger, 2005

- Palpgenu with three setae ............................................ 9

9. fn TFe 5-5-4, Ti III 92–104, fn Ti I– III 11-11-11, ISD 64–72 .............................. barloventensis Haitlinger, 2004

- fn TFe 5-5-5, Ti III 78–84, fn Ti I– III 13-13-13, ISD 52–56 ......................... B. malpaisesensis Haitlinger, 2004

10. fn TFe 6-6-5 ................... B. kendalli Welbourn, 1991

- fn TFe 5-5-5 ................................................................. 11

11. Ti I with three solenidia ......................................... 12

- Ti I with one or two solenidia ................................... 13

12. Ti II with 10 normal setae, Ti I 58–73 ........................ ..................................................... B. zhangi Saboori, 2001

- Ti II with 11 normal setae, Ti I 72–83 ........................... .......................................... B. murorum ( Hermann, 1804)

13. Ti III >98, TFe III >50, scutalae on scutum ......... 14

- Ti III <90, TFe III <48, scutalae on or off scutum .... 16

14. Ti I with one solenidion, number of normal setae on Ti I 12, fn Ge 7-7-8, ISD 80 ............................................ .................................................. B. kacperi Haitlinger, 1996

- Ti I with two solenidia, number of normal setae on Ti I 10, fn Ge 8-8-8, ISD <74 ............................................ 15

15. Number of normal setae on Ti II 10, Ti III 98–100, scutalae on scutum ............. B. medardi Haitlinger, 2000

- Number of normal setae on Ti II nine, Ti III 108–114, scutalae off scutum ......... B. biljanae (Haitlinger, 2000)

16. Scutalae on scutum ................................................. 17

- Scutalae off scutum .................................................... 19

17. fn Ti 10-10-11 .......... B. innocentae Haitlinger, 2006

- fn Ti 9-9-9 or 11-11-10 .............................................. 18

18. fn Ti 9-9-9, PSens 72–82, ASens 48–54, ISD 56–58 .. .......................................... B. minodorae Haitlinger, 2000

- fn Ti 11-11-10, PSens 62, ASens 40, ISD 50 .................. ................................................ B. soydani Haitlinger, 2000

19. Ge II & III each with seven normal setae ............ 20

- Ge II & III each with eight normal setae ................. 21

20. Ge I with nine normal setae, fn Ti 10-12-12, ISD 52, PL 52, Ti III 68, NDV 106 ....... B. nikae Haitlinger, 1996

- Ge I with seven normal setae, fn Ti 11-10-11, ISD 62, PL 36–40, Ti III 82–90, NDV 152 ..................................... .................................... B. wratislaviensis Haitlinger, 1996

21. fn Ti 11-11-11, fn Ta (21–23)-(18–19)-(19–20), AW 30–40, ASens 30–37, PSens 45–60 .................................. ........................................................ B. akramii Noei, 2017

- fn Ti 12-12-10, fn Ta 19-19-17, AW 54, ASens 48, PSens 80 ............................. B. rajmundi Haitlinger, 1996