Three new species of mites (Acari: Zerconidae) from canopy habitats in Irish forests Author Moraza, María Lourdes Author Arroyo, Julio Author Bolger, Thomas text Zootaxa 2009 2019 29 39 journal article 10.5281/zenodo.186058 c22de70d-4887-4eaa-b93b-cbb802762a63 1175-5326 186058 Key to the species of Zercon recorded in Britain and Ireland , based on adult females. 1. Pore Po3 situated on position gdJ, between setal rows Z and J................................................................................... 2 - Pore Po3 situated on position gdZ, on the line between Z3 and Z4 or between this line and setal row S................. 11 2. Setae J1-J5 short, never reaching the bases of the following setae, similar in length and form ................................. 3 - Setae J1-J5 not similar in length and shape.................................................................................................................. 9 3. Longer dorsal setae conspicuously bipectinate............................................................................................................. 4 - Longer dorsal setae smooth or with 1–2 barbs ............................................................................................................. 5 4. Longer opisthonotal setae Z4 , Z5 and S5 ; setae Z3 and S3 acicular, smooth; central region of opisthonotal shield with small tubercles, anterolateral regions imbricate. Idiosoma: 490 long, 380 wide ...................... Z . spatulatus C.L. Koch - Longer opisthonotal setae Z3-Z5 , S4-S5 , with hyaline sheaths distally, S3 barbed; anterior half of opisthonotal shield imbricate, posterior half with sparsely pits. Idiosoma: 480 long, 345 wide ..... Z . hemimbricatus Skorupski & Luxton 5. Setae J and R with a blunt tip, smooth or with 1 barb; setae Z3-Z5 , S3-S thickened, club-like, smooth or with 1 barb; Z3 sligthly longer than Z2 ; posterior glands conspicuously large. Idiosoma: 553 long, 377 wide................................. ................................................................................................................. Z . curryi Moraza, Arroyo & Bolger sp. nov. - Setae J and R with acute tips ........................................................................................................................................ 6 6. Longer opisthonotal setae Z3-Z5 , S3-S5 , simple smooth ............................................................................................ 7 - Longer opisthonotal setae Z3-Z5 , S3-S5 , paddle- like with 1 or 2 barbs and hyaline sheaths distally; Z3 < Z4 < Z5 ; S3 < S4 < S5 ; setae J , Z1 , Z2 , S1 , S2 and R thin and with 1 barb; posterior region of opisthonotal shield with pits. Idio- soma: 570 long, 404 wide ....................................................................................................... Z . darai Moraza sp. nov. 7. Longer opisthonotal setae Z3-Z5 , S4-S5 , smooth, apically flattened and rounded; Z3 < Z4 = Z5 ; S3<S4<S5 ; setae J , Z1 , Z2 , S2 , S3 and R thin and smooth. Idiosoma: 520 long, 400 wide ............................................ Z . berlesei Sellnick - Longer opisthonotal setae smooth, apically thin ......................................................................................................... 8 8. Longest opisthonotal setae are Z4 , Z5 and S5 ; dorsal ornamentation weakly expressed. Idiosoma: 420 long, 290 wide ...................................................................................................................................................... Z . blesti Evans, 1954 - Longest opisthonotal setae are Z3-Z5 smooth and thin as S5 ; Z3<Z4<Z5 ; S4 = ½ S5 = Z3 ; Po3 on the line connecting J5 and Z4 . Idiosoma: 410 long, 310 wide ............................................................................... Z . abaculus (C.L. Koch) 9. Setae J3 shorter than J4 and J5 ( J3 <½ J4 ) and longer than J1 and J2 ; longest setae J4 , J5 , Z4 , Z5 and S5 thickened distally, pubescent. Idiosoma: 460 long, 360 wide ..................................................................... Z . peltatus C.L. Koch