Zercon delicatus, Urhan & Ekiz, 2002

Urhan, R. & Ekiz, A. N., 2002, Systematic Studies On Zerconid Mites (Acari: Gamasida, Zerconidae) Of Turkey, Acta Zoologica Academiae Scientiarum Hungaricae 48 (3), pp. 225-235 : 228-234

Zercon delicatus sp. n.

( Figs 2 A–D )

Type material. Holotype f. “ Turkey, Artvin, Yusufeli, Bahceli village, 1350 m, 20 September, 1992, collected by R. Urhan.” Sample from moss pads underlying soil in a coniferous forest (mostly Pinus sp. and Picea orientalis ). Paratypes: 30 ff, 6 mm; from the same sample; other paratypes from: Turkey, Artvin, Yusufeli, Cevreli village, 1550 m, 17 August, 1993, collected by R. URHAN. Sample from litter and soil underlying Pinus sp. in a mixed forest: 5 ff, 4 mm. Type deposition; holotype and 8 paratypes (5 ff, 3 mm) at the Zoological Museum of Atatürk University, Erzurum, Turkey. Other paratypes (30 ff, 7 mm) are deposited in the authors’ collection

Female ( Figs 2 A, B ). Length of idiosoma (excluding gnathosoma) of holotype 520 µm, width 392 µm.Measurement of 35 paratypes; mean length 520 (507–538) µm, mean width 380 (357–398) µm.

Dorsal setae ( Fig. 2A ). On the podonotum seta j1 feathered the remainder short and smooth. On the opisthonotum setae J 1 and Z 1 short and smooth. Setae J 2 –J 6 long, barbed with hyaline ending. Seta J 2 does not reach the base of seta J 3. Seta J 3 reaching to the base of seta J 4. Seta J 5 exceeding posterior margin of opisthonotum. Seta J 6 110 µm (on average) apart from each other. Setae Z 2 –Z 4 long, barbed with hyaline ending. Seta Z 3 reaching to the base of seta Z 4. Seta Z 4 exceeding posterior margin of opisthonotum. Seta Z 5 long and smooth. The distance between setae Z 5 –J 6 26 µm. Setae S 1 –S 4 similar to seta J 6. Seta S 2 exceeding margin of opisthonotum. All marginal setae of opisthonotum short and smooth. Lengths and their mutual distances of opisthonotal setae are given in Table 4.

Pores. Pore po 1 located on the line connecting setae s 1 –s 2. Pore po 2 on the line connecting setae j 4 -s 4. Pore po 3 posterior to the line connecting setae z 1 –s 5. Pore Po 1 located anterior to the insertion of seta Z 1. Pore Po 2 posterior to the line connecting setae Z 2 –S 2. Pore Po 3 on the line connecting setae Z 4 –J 4. Pore Po 4 on the line connecting setae S 4 –Z 5.

Sculpturing pattern. The ornamentation of the dorsal shields shown in Fig. 2A . Dorsal cavities distinct, well sclerotized, equal in size with axes parallel to the body axis.

Venter ( Fig. 2B ). The chaetotaxy and shape of peritremal shield typical for the genus. Adgenital shields present with three pores. With four setae on the anterior margin of ventro-anal shield.

Male ( Figs 2C, D ). Idiosoma (excluding gnathosoma) in 10 specimens; mean length 405 (388–435) µm, mean width 283 (267–289) µm. Setae, poresand sculpture pattern on the podo- and opisthonotum as in female. The distance between setae J 6 –J 6 and Z 5 –J 6 avarage 92 µm and 20 µm, respectively. Lengths and their mutual distances of opisthonotal setae are given in Table 5.

Distribution. Artvin, Turkey.

Etymology. The specific ephithet refers to the delicate structure and setae of the idiosoma.

Diagnosis. The new species Zercon delicatus sp. n. is closely related to Z. kaszabi BŁASZAK, 1978 and Z. embersoni BŁASZAK, 1985 ( BŁASZAK 1978, 1985). The distinguishing characters among three the related species of the genus Zercon are given in Table 6.

KEY TO THE ADULTS OF THE GENUS ZERCON KNOWN FROM TURKEY

1 Anterior margin of ventro-anal shield with two setae 2

– Anterior margin of ventro-anal shield with four setae 12

2 The long setae of opisthonotum with hyaline ending 3

– The long setae of opisthonotum without hyaline ending 10

3 Setae J 4 –J 5 delicately barbed or with hyaline ending 6

– Setae J 4 –J 5 smooth 4 4 Seta S 2 with hyaline ending solenites HAARLOV, 1942

– Seta S 2 smooth 5

5 Seta S 3 smooth lepurus BŁASZAK, 1979

– Seta S 3 with hyaline ending separatus URHAN, 2001

6 Setae J 4 –J 5 delicately barbed 7

– Setae J 4 –J 5 with hyaline ending 8

7 Seta S 2 delicately barbed and without hyaline ending fragilis URHAN, 2001

– Seta S 2 with hyaline ending nemoralis URHAN, 2001

8 Seta S 3 not reaching margin of opisthonotum colligans BERLESE, 1920

– Seta S 3 reaching margin of opisthonotum 9

9 Seta J 3 with hyaline ending plumatopilus ATHIAS-HENRIOT, 1961

– Seta J 3 smooth insperatus BŁASZAK, 1979

10 PoresPo 3 on the line connecting setae Z 4 –J 5, seta Z 4 not reaching posterior margin of opisthonotum ignobilis BŁASZAK, 1979

– PoresPo 3 anterior to the line connecting setae Z 4 –J 4, seta Z 4 reaching posterior margin of opisthonotum 11

11 Seta j 2 short and smooth adoxyphes BŁASZAK, 1979

– Seta j 2 long and barbed caucasicus BŁASZAK, 1979

12 Between the setal rows J–J and J–Z eight extra setae trabzonensis URHAN, 1997

– Between the setal rows J-J and J-Z no extra setae 13

13 Setae J 4 –J 5 smooth 14

– Setae J 4 –J 5 delicately barbed or with hyaline ending 23

14 Seta S 3 absent beleviensis URHAN, 2001

– Seta S 3 present 15

15 Seta S 3 delicately barbed serratus URHAN, 2001

– Seta S 3 smooth or with hyaline ending 16 16 Setae S 3 and S 4 with hyaline ending 17

– Setae S 3 and S 4 smooth 19

17 Seta Z 3 short and smooth ozkani URHAN et AYYILDIZ, 1994

– Seta Z 3 long and with hyaline ending 18

18 Seta S 2 short and smooth pinicola HALASKOVA, 1970

– Seta S 2 long and with hyaline ending andrei SELLNICK 1958

19 Long setae of opisthonotum thick and terminally broad berlesei SELLNICK, 1958

– Long setae of opisthonotum thin and smooth 20

20 Seta S 3 exceeding the margin of opisthonotum 21

– Seta S 3 not reaching the margin of opisthonotum perforatulus BERLESE, 1904

21 PoresPo 3 between setal rows J–Z and the outer dorsal cavities twice bigger than inner

– Pores Po 3 between setal rows Z–S and the dorsal cavities equal in size montanus WILLMANN, 1943

22 Seta J 3 not reaching the bases of seta J 4 cayblus ATHIAS-HENRIOT, 1961

– Seta J 3 reaching the bases of seta J 4 bulgaricus BALOGH, 1961

23 Pores Po 3 between setal rows Z–S notabilis BŁASZAK, 1979

– Pores Po 3 between setal rows J–Z 24

24 Setae J 4 –J 5 delicately barbed 25

– Setae J 4 –J 5 with hyaline ending 26

25 Setae S 2 and S 3 delicately barbed kackaricus sp. n.

– Setae S 2 and S 3 with hyaline ending septemporus URHAN, 2001

26 Seta J 3 short and smooth burdurensis URHAN 2001

– Seta J 3 long and with hyaline ending 27

27 Seta S 1 smooth quadricavum URHAN, 2001

– Seta S 1 delicately barbed or with hyaline ending 28

28 Seta S 1 delicately barbed turcicus URHAN et AYYILDIZ, 1994

– Seta S 1 with hyaline ending 29

29 Setae R 1 –R 7 smooth delicatus sp. n.

– Setae R 1 –R 7 delicately barbed or with hyaline ending 30

30 Setae R 1 –R 7 delicately barbed apladellus BŁASZAK, 1979

– Setae R 1 –R 7 with hyaline ending 31

31 Setae J 1 and Z 1 with hyaline ending ayyildizi URHAN, 1997

– Setae J 1 and Z 1 smooth 32

32 Setae J 5 and Z 4 not reaching posterior margin of opisthonotum agnostus BŁASZAK, 1979

– Setae J 5 and Z 4 reaching posterior margin of opisthonotum salmani URHAN, 2001

Figures

Fig. 2. Zercon delicatus sp. n.: female: (A) dorsal idiosoma; (B) ventral idiosoma; male: (C) dorsal idiosoma; (D) ventral idiosoma