Zetzellia ampelae Johann and Ferla

Johann, Liana, Carvalho, Gervásio Silva, Majolo, Fernanda & Ferla, Noeli Juarez, 2013, Stigmaeid mites (Acari: Stigmaeidae) from vineyards in the state of Rio Grande do Sul, Brazil, Zootaxa 3701 (2), pp. 238-256 : 252-254

Zetzellia ampelae Johann and Ferla sp. nov.

( Fig. 8 )

Description. FEMALE. Gnathosoma . Palp coxae with 1 spiniform setae; trochanter without setae; femur with 3 long and serrate setae, one of them more robust; genu with 1 long and serrate seta; tibia with 2 setae, 1 claw and 1 accessory claw slender; tarsus with 3 setae, 1 sensillum trifurcated and 2 solenidia ( Fig. 8 B). Infracapitulum with 2 pairs of slender setae and 2 pairs of adoral setae distally. Idiosoma . Oval outline. Dorsum: Prodorsal shield with 3 pairs of serrate setae, 1 pair of eyes and 1 pair of post-ocular bodies. Hysterosomal shield smooth with 4 pairs of setae. Setae c2, d2 and f inserted on small independent shields. Short podocephalic canal starting between the base of palps and leg I, extendig to the base of leg I. Venter: 3 pairs of slender setae between coxae, 1 a at level of coxa II, 3 a anterior to coxa III and 4 a at level of coxa IV. Setae ag1 inserted on small shields before genital opening and setae ag2 inserted laterally to genital opening, situated on separate shields ( Fig. 8 C). Genital region with 4 pairs of setae (g1, ps3, ps2 and ps1), with ps3, ps2, and ps1 more robust and serrate. Setae g1 reaching the base of setae ps2. Leg I – IV setation ( Fig. 8 D). coxae 2(1)-1-2-2; trochanters 1-1-1-1; femora 5-4-2-2; genua 4-1-0-0; tibiae 5(1)- 5(1)-5(1)-5(1); tarsi 12(1)-9(1)-7(1)-7.

Male. Unknown.

Measurements of this species are provided in Table 7 .

Type material examined. CAS-12 (MCN). Female holotype and 2 female paratypes from Boqueirão do Leão: holotype from V. labrusca, Bordeaux cultivar, 0 8 January 2007, coll. F. Diel; 1 female paratype with same data, 21 November 2006, coll. T.B. Horn; 1 female paratype with same data, 11 December 2006, coll. J.F. Silva. Type deposition. Holotype and all paratypes in MCN.

Differential diagnosis. The new species is similar to Zetzellia quasagistemas Hernandes and Feres, 2005 regarding c1 setae inserted on the hysterosomal shield. Zetzellia ampelae sp. nov. has ag2 setae located on the individual shields lateral to the genital opening and two setae and two claws on the palptibiae, ve, sci and sce setae are 30% longer than those in Z. quasagistemas ( Fig. 8 A). In Z. quasagistemas , ag2 setae are located on the horseshoe-shaped shield that surrounds the genital opening and it has three setae, in addition to one claw on the palptibiae.

Etymology. The species name is derived from the Greek word Ampelos meaning “vine”.

Remark. It is not possible to associate the new species with phytophagous mites.

Figures

FIGURE 8. Zetzellia ampelae Johann and Ferla sp. nov. (female). A: dorsum; B: palp; C: anogenital region ventrally; D: legs I and II in dorsal view.

Tables

TABLE 7. Measurements of Zetzellia ampelae Johann & Ferla sp. nov. (female)

Character measured	Female holotype	Female (n=3) Mean SD	Max	Min
Body length	485	479 5.2	485	475
Body width	230	302 5.2	308	298
Idiosoma	360	362 1.4	362	360
ve	31	30 1.0	31	29
sci	37	39 2.5	42	37
sce	35	34 1.2	35	33
c 1 c 2 d 1 d 2 e 1 e 2 f	25 30 25 24 27 26 28	24 0.6 31 1.2 25 0.6 25 0.6 26 0.6 27 1.2 29 1.2	25 32 25 25 27 28 30	24 30 24 24 26 26 28
h 1 h 2 ve-ve	31 28 30	31 0.0 29 1.5 31 3.6	31 31 35	31 28 28
c 1 -c 1 d 1 -d 1 e 1 -e 1 f-f	61 84 46 77	61 1.5 87 3.1 57 12.7 79 4.7	63 90 71 84	60 84 46 75
h 1 -h 1 ve/ve-ve	15 0.7	15 0.0 0.6 0.0	15 0.7	15 0.6
c1/c1-c1	0.8	0.8 0.1	0.8	0.7
d1/d1-d1	0.4	0.4 0.0	0.4	0.4
e1/e1-e1	1.1	1.1 0.1	1.1	1.1
f/f-f	0.5	0.5 0.1	0.5	0.5
h1/h1-h1	2.1	1.9 0.2	2.1	1.8
SD = Standard Deviation.