Five new feather mites of the subfamily Pterodectinae (Acariformes: Astigmata: Proctophyllodidae) from passerines and hummingbirds (Aves) of Brazil
Author
Hernandes, Fabio Akashi
Author
Pedroso, Luiz Gustavo A.
Author
Oniki-Willis, Yoshika
text
Zootaxa
2016
4161
3
301
328
journal article
38258
10.11646/zootaxa.4161.3.1
2510711e-d91f-4685-8d30-292eedbc9b41
1175-5326
267195
2A6DAB9E-49B8-4FA2-AADE-C526C3F2B79E
Trochilodectes willisi
Hernandes & Pedroso
sp. nov.
(
Figs. 10–12
,
16
D, 17D)
Type material
. Holotype male,
paratypes
33 males
and
19 females
ex
Phaethornis
eurynome
(Lesson, 1832) (
Apodiformes
:
Trochilidae
),
BRAZIL
,
São Paulo
State,
Parque Estadual Carlos Botelho
,
24°05'S
47°59'W
, 0
7 July 1979
,
Y. Oniki-Willis
and
E.O. Willis
cols. (#Y-53).
Type deposition
: Holotype male at DZUnesp-RC (#3669); paratypes at DZUnesp-RC (#3670– 3699), ZISP, UMMZ, USNM, and DZSJRP.
Male. (
holotype
, range for
8 paratypes
in parentheses). Idiosoma, length × width, 254 (248–264) × 133 (128– 138). Prodorsal shield: entire, lateral margins slightly concave at level of scapular setae, posterior margin slightly concave with posterior angles acute, length 82 (77–87), width 101 (95–107), surface smooth (
Fig. 10
A); bases of scapular setae
se
separated by 50 (45–51). Setae
ve
present, rudimentary. Scapular shields narrow, moderately developed dorsally. Humeral shields present, with antero-lateral angles bearing setae
c2
. Setae
cp
situated ventrally on humeral shield. Subhumeral setae
c3
lanceolate, 23 (18–21) × 4 (4–6). Hysteronotal shield: greatest length 156 (153–163), width at anterior margin 86 (75–85), anterior margin concave, surface smooth. Distance between prodorsal and hysteronotal shields 16 (13–23). Opisthosomal lobes small, approximately as long as wide at base; posterior margins of lobes roughly rounded. Terminal cleft shaped as an inverted U, 17 (14–17) long. Supranal concavity semicircular. Setae
f2
at same level as setae
ps2
. Setae
h1
situated at level of supranal concavity. Setae
h3
thin leaf-like, 21 (18–31) long, 3 (4–5) wide; setae
ps2
41 (45–75) long; setae
ps1
filiform, about 5 long, situated on margin of terminal cleft approximately at level of setae
h2
. Distances between dorsal setae:
c1
:
d2
55 (53–58),
d2:h1
78 (67–81),
h2
:
h2
31 (28–34),
h3
:
h3
18 (16–22).
Epimerites I fused into a narrow V, posterior tips connected with epimerites II by wide oblique bands (
Fig. 10
B). Coxal fields I, II without extensively sclerotized areas. Rudimentary sclerites rEpIIa present, small, close to tips of epimerites III. Coxal fields I closed, II–IV closed. Epimerites IVa bearing 4a and connected anterior to genital apparatus. Genital arch 26 (24–28) in width; aedeagus 45 (41–49) long from anterior bend to tip, extending to midlevel between setae
g
and
ps3
. Genital papillae not connected at bases. Genital shields absent; adanal shield represented by a pair of thin, oblique sclerites between the levels of setae
g
and
ps3
. Adanal suckers 11 (9–12) in diameter, distance between centers of discs 19 (18–23), corolla smooth, surrounding membrane with short radial striae. Opisthoventral shields occupying lateral areas of opisthosoma and entire lobes ventrally; inner margins of these shields anterior to level of anal suckers with angular extensions bearing setae
ps3
. Setae
4b
situated approximately at same level as setae
3a
. Distance between ventral setae:
1a
:
4b
73 (72–79),
4b
:
4a
23 (21–26),
4a
:
g
24 (23–28),
g
:
ps3
35 (33–35),
ps3
:
ps3
35 (36–40).
Femora I, II with small basal crests (
Fig. 12
A,B), other segments of legs I–IV without processes. Solenidion
σ1
of genu
I 22
(18–26) long, situated at midlevel of segment; solenidion
σ
of genu III inserted at basal half of segment. Genual setae
cG
I, II and
mG
I, II filiform. Seta
d
of tarsi II slightly longer than corresponding seta
f
; seta
d
of tarsi III three times shorter than corresponding seta
f
(
Fig. 12
C). Solenidion
φ
of tibia IV extending to midlevel of ambulacral disc. Tarsus
IV 23
(22–27) long, with small claw-like apical process; setae
d
and
e
button-like, seta
d
situated at midlevel of segment (
Fig. 12
D).
Female (range for
8 paratypes
). Idiosoma, length × width, 376–412 × 162–176. Prodorsal shield: posterior margins with two shallow concavities, length × width, 99–104 × 127–136, surface smooth, bases of setae
se
separated by 69–76 (
Fig. 11
A). Setae
ve
present, rudimentary. Scapular shields narrow, poorly developed dorsally. Humeral shields present, with antero-lateral angles bearing setae
c2
. Setae
cp
situated ventrally on humeral shield. Subhumeral setae
c3
lanceolate, 21–25 × 5–7. Anterior and lobar parts of hysteronotal shield separated, with narrow band of integument between those shields (
Fig. 11
A). Distance between prodorsal and anterior hysteronotal shields 22–36. Anterior hysteronotal shield roughly rectangular, anterior margin slightly concave, greatest length 178–197, width at anterior margin 102–114, surface smooth. Length of lobar region 72–88, greatest width 87–102.
Terminal cleft narrow, 43–56 long. Supranal concavity present; lobar shield surface without ornamentation. Setae
h1
piliform, at same level as supranal concavity. Setae
h2
lanceolate with round apex, 49–59 × 7–8. Setae
ps1
situated near inner margins of opisthosomal lobes, approximately equidistant between
h3
and
h2
. Setae
h
3
19–30 long. Distances between dorsal setae:
c1
:
d2
89–104,
d2
:
h1
109–121,
h2
:
h2
69–79,
h3
:
h3
35–48.
FIGURE 10
.
Trochilodectes willisi
sp. n.
, male. A—dorsal view, B—ventral view.
Epimerites I fused as an inverted π (
Fig. 11
B). Coxal fields I–II, IV open. Epimerites IVa present. Translobar apodemes of opisthosomal lobes present, thin, fused to each other anterior to terminal cleft. Epigynum horseshoe shaped, greatest width 71–84; apodemes of ovipore separated from epimerites IIIa. Primary spermaduct with slight enlargement near head of spermatheca; secondary spermaducts 13–21 long (
Fig. 12
G). Pseudanal setae filiform, setae
ps2
situated at level of posterior half of anal opening; distance between pseudanal setae:
ps2
:
ps2
51–62,
ps3
:
ps
3
19–26,
ps2
:
ps
3
11–19.
Femora II with ventral crest, other segments of legs I, II without processes. Solenidion
σ1
of genu I, 24–39 long, situated at midlevel of segment. Solenidion
σ
of genu III inserted basally. Genual setae
cG
I, II,
mG
I, II as in male. Seta
d
of tarsi I, II slightly shorter than corresponding seta
f
, setae
d
of tarsi III,
IV 3–4
times shorter than corresponding setae
f
. Genu IV not inflated.
Differential diagnosis.
Trochilodectes willisi
sp. nov.
resembles
T. brevicaulus
Černý, 1974
and
T. ramphodonis
Park & Atyeo,
1974
in having the aedeagus reaching the midlevel between setae
g
and
ps3
. In
T.
brevipenis
Hernandes, 2013
it reaches only the level of setae
g
, in
T. trochilidarum
(
Trouessart, 1885
)
it extends to the level of
ps3
, and in all the remaining species the aedeagus is much longer and always extends beyond the level of setae
ps3
(
Park & Atyeo 1974
). The new species is distinguished from the two closest species,
T. brevicaulus
and
T. ramphodonis
, in having a pair of thin, oblique adanal shields between setae
g
and
ps
3
in males. These sclerites are absent in
T. brevicaulus
and
T. ramphodonis
, and also in
T. bicuspidus
,
T. latifoliatus
, and
T. ramphodonis
, albeit present in five other species of the genus (
T. abbreviatus
,
T. alloptinus
,
T. buconvexus
,
T. mucronatus
,
T. tenuifolia
). It also is distinguished from
T. brevicaulus
in having much shorter setae
h
3
in males, approximately equal to the width of each opisthosomal lobe. In
T. brevicaulus
setae
h3
are about twice as long as each lobe’s width.
FIGURE 11
.
Trochilodectes willisi
sp. n.
, female. A—dorsal view, B—ventral view.
Females of
Trochilodectes willisi
are distinguished from those of
T. brevicaulus
in having the length and greatest width of lobar shield (at level of
h2
) subequal, setae
h1
situated posterior to the level of setae
f2
, and the anterior hysteronotal shield without any ornamentation. In females of
T. brevicaulus
, the lobar shield is 1.3–1.4 times wider than long, setae
h1
are anterior to the level of setae
f2
, and the posterior part of anterior hysteronotal shield is ornamented with several circular lacunae. Females of the new species differ from
T. ramphodonis
in having the bases of setae
f2
situated on the very margin of lobar shield, and a narrower terminal cleft with the length exceeding about 6 times the width at level of setae
ps1
. In females of
T. ramphodonis
,
the bases of setae
f2
are moved mesal from the lateral margins of lobar shield, and the terminal cleft is 3–4 times the width at level of
ps1
.
Etymology.
The species is named in memory of the late professor Edwin O’Neill Willis (
1935–2015
), who has greatly contributed to the improvement and understanding of ornithology in
Brazil
(
Ragusa-Netto 2015
).