New genus and seven new species of Brazilian eriophyoid mites and redescription of Catachela machaerii Keifer (Acari: Prostigmata: Eriophyoidea)
Author
Flechtmann, Carlos H. W.
text
Zootaxa
2004
611
1
20
journal article
10.5281/zenodo.158438
c5c1e44e-a1a3-49f2-8534-d86e509f38cf
11755326
158438
04137FE6-0AE1-490E-9725-1157513303F5
Cosella macrothrix
n.sp.
(
Fig. 6
)
DIAGNOSIS
— Empodium 4rayed; femoral seta (
bv
) on leg II more than twice as long as segment; tarsal I dorsal and lateral seta (
ft'
,
ft"
) subequal in length.
FEMALE
(n = 6) — Body fusiform, 153 (143–172), 66 (61–66) wide.
Gnathosoma
projecting down; antapical seta 5 (5–7); basal seta 3 (2–3); chelicera 18 (17–18).
Prodorsal shield
design a complex network; median and admedian lines complete, slightly sinuose, three transverse lines and several longitudinal lines forming a pattern of symmetric geometric figures (
Fig. 6
D); laterally with many short dashes. Setiferous tubercles ahead of rear shield margin, plicate, 22 (18–24) apart, directing scapular seta (
sc
) upwards;
sc
7 (7–8).
Legs
: leg
I 23
(22–24); femur 9 (8–9), femoral seta (
bv
) 8 (7–9); genu 4 (4), genual seta (
l"
) 25 (23–25); tibia missing; tarsus 8 (7–9), dorsal and lateral setae subequal in length, dorsal seta (
ft'
) 17 (17–19), lateral seta (
ft"
) 18 (18–22), unguinal seta (
u'
) geniculate in some specimens, 5 (5–7), solenidion somewhat displaced axially, 5 (5–7), empodium 6 (6–7), 4rayed. Leg
II 21
(20–23); femur 9 (7–9),
bv
18 (15–19), genu 3 (3–4),
l"
9 (8–10); tibia missing; tarsus 7 (7–8),
ft'
7 (5–7),
ft"
19 (19–22),
u'
5 (5–6), solenidion in usual dorsal position, 10 (8–10), empodium 5 (5–6), 4rayed.
Coxigenital area
: coxae I fused medially with no indication of a sternal line and fused with hypostome, with numerous granules; coxae II with granules surrounding setal basis. Coxal seta I (
1b
) missing; coxal seta II (1a) 17 (13–17), 9 (9–11) apart; coxal seta III (
2a
) 20 (20–38), 23 (22–26) apart. Coxigenital area with three annuli, smooth.
Genitalia
24 (23–24) wide, 11 (11–16) long. Genital seta (
3a
) 11 (8–11). Epigynum granulated.
Opisthosoma
: annuli subequal dorsoventrally; microtubercles present only laterally on dorsal annuli and a few caudal annuli entirely with reduced microtubercles. Ventrally microtubercles absent on an Ushaped area extending from opisthosomal seta I (
d
) to seta II (
e
). Lateral seta (
c2
) 30 (28– 33), on annulus 1 (1–2) from genitalia rear margin; ventral seta I (
d
) 51 (49–61), 32 (31– 37) apart, on annulus 11 (9–12); ventral seta II (
e
) 10 (8–11), 14 (14–18) apart, on annulus 23 (21–24); ventral seta III (
f
) 18 (17–20), 18 (18–19) apart, on annulus 41 (35–41) or 8 (7–8) th from rear. Total ventral annuli 48 (40–48); total dorsal annuli 54 (49–56). Caudal seta (
h2
) 57 (57–62); accessory seta (
h1
) minute.
MALE
(n = 3) — Smaller than female, 139–154, 55–65 wide.
Gnathosoma
: antapical seta 5–6; basal seta 4; chelicera 15–16.
Prodorsal shield
36–39, 56–60 wide;
sc
6–7, 18–19 apart.
Legs
: leg
I 19–23
; femur 6–8,
bv
5–8; genu 3,
l"
23–25; tibia missing; tarsus 7,
ft'
17–18,
ft
" 18–19,
u'
6, solenidion 5, empodium 5, 4–rayed. Leg
II 19–20
; femur 7–8,
bv
12–14; genu 3–4,
l"
7–8; tibia missing; tarsus 6–7,
ft'
6–7,
ft"
16–20,
u'
5–6, solenidion 8–9, empodium 6–8, 4rayed.
Coxigenital area
:
1b
missing;
1a
10–11, 9–10 apart;
2a
18– 19, 23–24 apart. Coxigenital area with 3 annuli, smooth.
Genitalia
: 21–23 wide, 13–16 long, densily granulate;
3a
7.
Opisthosoma
: annuli subequal dorsoventrally, microtubercles as in female. Lateral seta (
c2
) 20–23, on annulus 2 from genitalia rear margin. Ventral setae:
d
48–50, 22–31 apart, on annulus 8–9;
e
9–11, 18 apart, on annulus 18–21;
f
17–19, 18 apart, on annulus 34–37 or 7–8th from rear. Total ventral annuli 40–44; total dorsal annuli 46–50;
h2
46–57;
h1
minute.
TYPE
MATERIAL
—
Holotype
female,
37 female
and
16 male
paratypes
from
Ficus pumila
L. (
Moraceae
), Campus "Luiz de Queiroz", Piracicaba, São Paulo,
Brazil
(
22° 42' 30" S
,
47° 38' 00" W
), coll. Nora
Cristina Mesa and C.H.W. Flechtmann
,
1 Oct. 2003
, on 11 microscopic preparations.
RELATION TO
HOST PLANT
— vagrant on both sides of leaves.
ETYMOLOGY
— The specific designation
macrothrix
is derived from the Greek
makro
, long, plus the Greek
thrix
, hair, seta and refers to the long femur II seta.
REMARKS
—
Cosella macrothrix
n.sp.
is close to
C. ceratopudenda
Flechtmann, 2002
(in:
Flechtmann & Moraes, 2002
) in the complexity of the prodorsal shield design, but has a much shorter scapular seta (
sc
extending over 2–4 dorsal opisthosomal annuli in
C. ceratopudenda
; reaching only half the distance to rear shield margin when folded backwards in
C. macrothrix
); and presents femur II seta at least twice as long as the segment (not more than equal in length to femur length in
C. ceratopudenda
); tarsal I dorsal and sublateral setae subequal in length (lateral seta much longer than dorsal seta in the other species of
Cosella
).
FIGURE 6.
Cosella macrothrix
n.sp.
AL, anterolateral aspect of female; D, dorsal aspect of female; E, empodium (enlarged); GM, male genitalia L1, leg I (enlarged); L2, leg II (enlarged); V,
ventral aspect of female.