Four new species of Diptilomiopinae from China (Acari: Eriophyoidea: Diptilomiopidae)
Author
Xue, Xiao-Feng
Author
Song, Zi-Wei
Author
Hong, Xiao-Yue
text
Zootaxa
2006
2006-03-27
1160
57
68
journal article
27097
10.5281/zenodo.2645228
0e5da2ee-ab64-4a9c-9264-168198db0e19
1175-5326
2645228
Trimeroptes quercus
sp. nov.
(
Fig. 1
)
Description
FEMALE (n = 8). Body fusiform, 223 (210–230) long, 77 (75–78) wide, 73 (72–75) thick; light yellow in color. Gnathosoma 48 (47–49) long, projecting downwards. Prodorsal shield 47 (45–48) long, 55 (53–57) wide; frontal lobe emarginated anteriorly; smooth. Dorsal tubercles ahead of rear margin, 27 (26–28) apart, scapular setae (
sc
) 18 (16–19) long, projecting forwards. Sternal line present. Coxal area with short lines; anterolateral setae on coxisternum I (
1b
) 17 (15–18) long, proximal setae on coxisternum I (
1a
) 20 (18–22) long, proximal setae on coxisternum II (
2a
) 42 (40–45) long.
Legs
I
45 (43–46) long, femur 13 (12–14) long, basiventral femoral setae (
bv
) absent; genu 6 (6–7) long, antaxial genual setae (
l’’
) 48 (45–51) long; tibia 15 (14–15) long, paraxial tibial setae (
l’
) 6 (6–7) long, setae located 2/3 from dorsal base; tarsus 7 (7–8) long; tarsal empodium divided, each 3rayed, tarsal solenidion knobbed. Legs
II 39
(37–41) long, femur 12 (11–12) long, basiventral femoral setae (
bv
) absent; genu 5 (5–6) long, antaxial genual setae (
l’’
) 9 (8–10) long; tibia 11 (11–12) long; tarsus 7 (7–8) long; tarsal empodium divided, each 3rayed, tarsal solenidion knobbed. Dorsal opisthosoma with 56 (55–58) annuli, smooth, ventrally with 78 (75–80) microtuberculate annuli. Setae
c2
15 (13–17) long, on ventral annulus 14 (14–16); setae
d
55 (50–59) long, on ventral annulus 26 (24–27); setae
e
13 (12–14) long, on ventral annulus 42 (40–43); setae
f
32 (30–36) long, on 9th ventral annulus from rear. Setae
h1
absent. Female genitalia 25 (24–26) long, 27 (26–28) wide, coverflap with 12 discontinuous longitudinal ridges, proximal setae on coxisternum III (
3a
) 8 (7–10) long.
MALE (n = 2). 184 (182–186) long, 65 (64–66) wide; genitalia 5 (5–6) long, 20 (20–21) wide, proximal setae on coxisternum III (
3a
) 9 (7–11) long.
Types
Holotype
,
female
, north
China
:
Henan Province
,
Luanchuan
county,
Longyuwan
,
33°42.53’ N
,
111°45.62’E
.
July 21, 2004
, from
Quercus glauca
Thunb
. (
Fagaceae
)
, coll.
Xue
,
XiaoFeng
.
Paratypes
,
7 females
and
2 males
, with the same data as
holotype
.
Relation to host
Vagrant on leaf surface. No damage to the host was observed.
Etymology
Derived from the generic name of the
type
host plant,
Quercus
.
FIGURE 1.
Trimeroptes quercus
sp. nov.
A, dorsal view of female; B, coxae and female genitalia;
C, legs I and II; D, lateral microtubercles; E, empodium; F, male genitalia.
Remarks
To date, the genus holds only four species:
Trimeroptes aleyrodiformes
(Keifer)
on
Liquidambar styraciflua
L. from North America,
T. ilicifolia
Keifer
on
Ilex laevigata
(Pursh.)
from North America,
T. rubi
Bagdasarian
on
Rubus
sp. L. and
R. fenticosa
from
Armenia
and
Italy
, and
T. luanchuanensis
Xue & Hong
on
Rubus
sp. L. from
China
(
Keifer, 1940
,
1964
;
Bagdasarian & Pogosowa, 1976
; de
Lillo, 1997
;
Xue & Hong, 2005
). This species is similar to
Trimeroptes ilicifolia
Keifer
, but can be differentiated by coxal area with short lines (little granules in
T. ilicifolia
), tarsal empodium divided, each 3rayed (6rayed in
T. ilicifolia
). This species is also similar to
Trimeroptes luanchuanensis
Xue & Hong
, but can be differentiated by the frontal lobe emarginated anteriorly.