Five new species of Tetranychidae (Acarina, Prostigmata) from south Tunisian oasis areas
Author
Auger, Philippe
Author
Chaaban, Samah Ben
Author
Grissa, Kaouthar Lebdi
Author
Khoualdia, Othman
Author
Flechtmann, Carlos H. W.
text
Zootaxa
2009
2232
29
49
journal article
40551
10.5281/zenodo.190324
c5199c92-c9a3-4ddf-87aa-29df1711065e
1175-5326
190324
C9759639-474C-469E-86DF-425735FC194A
Petrobia (Petrobia) carthagensis
sp. nov.
Auger & Flechtmann
(Figures 24–39)
Type-specimens.
Holotype
(male),
11 male
and
11 female
paratypes
on
Salicornia arabica
L., 1753, (
Chenopodiaceae
), El Hamma, Gouvernorat de Tozeur,
Tunisia
,
05/06/2005
, coll. P. Auger. All the material on 22 microscopic preparations.
Holotype
,
8 male
and
8 female
paratypes
deposited in the collection of the CBGP. Remaining
paratypes
deposited in the
type
collection of the MNHN.
Diagnosis
.
Petrobia (P.) carthagensis
resembles
P. (P.) b re v i p e s
Reck and Bagdasarian in that it bears a similar dorsohysterosomal striation pattern and short subspatulate setae but it is distinctive in having different leg setae formula.
FIGURES 24, 25.
Petrobia (P.) carthagensis
sp. nov.
, female. 24, dorsal aspect; 25, dorsal
h
1 seta (enlarged).
Description
.
Male
:
Holotype
284 µm long (without gnathosoma), gnathosoma 102 µm long. Ten
paratypes
measured, 260–318 µm long, gnathosoma 95–109 µm long.
Dorsum – Dorsal body setae slender and serrate, fourth pair of lateral setae and clunals being longer than other setae (length of
holotype
and variations of ten
paratypes
):
v
2 16
(13–15);
sc
1 12 (11–13);
sc
2 11 (11–14);
c
1 12 (11–13);
c
2 11 (10–12);
c
3 12 (11–15);
d
1 11 (11–12);
d
2 11 (10–11);
e
1 12
(10–12);
e
2 11
(10–11);
f
1 13 (11–14);
f
2 19 (17–19);
h
1 16 (16–19). There are no lobes on striation.
Gnathosoma – Peritreme anastomosed distally but distal enlargement smaller compared to female. Palpal claw not accute, slightly truncate distally. Palptarsus eupathidium
su
longer than eupathidia
ul'
,
ul''
and solenidion.
FIGURES 26–32.
Petrobia (P.) carthagensis
sp. nov.
, male. 26, tarsus and tibia I; 27, tarsus and tibia II; 28, empodia I– IV; 29, peritremal anastomosis; 30, palptarsus; 31,
h
1 setae; 32, aedeagus.
Venter – Ventral striae without lobes.
Legs – Legs length inferior to the body, leg I 230 (212–230) µm long (length of
holotype
and variations of ten
paratypes
). Leg chaetotaxy as follows:
I 2 − 1
− 4 − 5 − 5 + (3) + 4 duplexes − 9 + (2) [(3)] + 4 [3] duplexes;
II 2 − 1
− 3 − 5 − 5 − 10 + (1) + 1 duplex;
III 1 − 1
− 2 − 3 − 3 − 9+ (1) + 1 duplex;
IV 1 − 1
− 2 − 3 − 3 − 9+ (1) + 1 duplex.
Duplex tactile setae on tarsi III and IV not serrate and about one fourth the length of solenidia. Empodia I– IV bear true claws pad-like, about half the length of empodial claws bearing two raws of ventrally directed hairs
Aedeagus – Shaft long, 105 (94–105) µm long, slender and abruptly constricted towards its distal end forming a slender stylet about one fourth to one fifth as long as the whole shaft.
FIGURES 33–39.
Petrobia (P.) carthagensis
sp. nov.
, female. 33, tarsus and tibia I; 34, tarsus and tibia II; 35, empodia I–IV; 36, palptarsus; 37, spermatheca; 38, terminal anastomosis of peritreme; 39, genital area.
Female
:
11 females
measured. Idiosoma: length 347–421 µm long, gnathosoma 119–133 µm long, width 258–284 µm.
Dorsum – Dorsal body setae short, subequal in length, serrate and subspatulate. As in male, external sacrals and clunals longer and more spatulate than other dorsal hysterosomal setae:
v
2 15–17
;
sc
1 11–15
;
sc
2 11–13
;
c
1 11–13
;
c
2 10–11
;
c
3 10–11
;
d
1 9–11
;
d
2 9–11
;
e
1 8
–10;
e
2 9
–10;
f
1 9–12
;
f
2 12–17
;
h
1 12–15.
Prodorsal integument with irregular reticulum medially. Laterally, prodorsum with irregular broken longitudinal striation. Hysterosomal striation with irregular widely spaced furrows. Medially, hysterosoma with transverse striae except in the area immediatly above the third pair of dorsocentral setae. Lateral striation broadly longitudinal with transverse patterns near
d
2 setae insertion and above
e
2 setae insertion. Caudal part of hysterosoma with smooth punctuations in an arched array. There are no lobes on stiation.
Gnathosoma – Stylophore rounded; peritreme ends in anastomosing chambers. Palptarsus as in male.
Venter – Area immediatly anterior to genital flap with irregular striation. Two pairs of para-anal setae and three pairs of anal setae are present.
Spermatheca – Sacculus elongate, constricted medially and bulbous distally.
Legs – Legs length strongly inferior to body length, leg I 217–253 µm long. Leg chaetotaxy as follows:
I 2 − 1
−3 [4] − 5 − 9 + (1) − 11 [10] + 2 duplexes;
II 2 − 1
− 3 − 5 − 5 − 10 [9] + 1 duplex;
III 1 − 1
− 2 − 3 − 3 − 9+ 1 duplex;
IV 1 − 1
− 2 − 3 − 3 − 9+ 1 duplex.
Associated setae on tarsi III and IV serrate and about two-thirds as long as solenidia. Empodia I–IV with true claws pad-like, about the half the length of empodial claws bearing two raws of ventrally directed hairs.
Etymology.
The species designation,
carthagensis
, refers to the antique capital in present-day
Tunisia
, the country where the mites were collected.