Phylogenetic analysis of the Taeniothrips genus-group, with revision of the species of Ctenothrips and Vulgatothrips (Thysanoptera, Thripinae)
Author
Wang, Zhaohong
Author
Li, Yajin
Author
Tong, Xiaoli
Author
Mound, Laurence
text
Zootaxa
2020
2020-03-12
4750
3
301
327
journal article
10.11646/zootaxa.4750.3.1
68aa6965-5a25-41ac-80ac-9a899e24bc94
1175-5326
3707432
A98C2B99-3D27-4696-8813-DE3BB2A893EC
Vulgatothrips smilax
(Bhatti)
Comb. n.
Ctenothrips smilax
Bhatti, 1976: 317
.
Ctenothrips niger
Kudô, 1977: 1
.
Syn. n.
(
Figs 6
,
26
,
35
,
67
)
The species
smilax
was described originally from five brachypterous specimens in
Himachal Pradesh
and Jammu & Kashmir in
India
.
Kudô (1977)
described
niger
from
Nepal
based on three macropterous females without referring to
smilax
. Since then, the differences between these species have been based solely on original descriptions:
niger
is macropterous, with antennal segments dark brown and abdominal tergites I–VII hexagonally reticulate; while
smilax
is brachypterous, with antennal segments brown and abdominal tergites V–VI with extremely faint reticulation, smooth in about posterior half and no reticulations on VII (
Bhatti 1976
;
Chen 1979
;
Xie
et al
. 2011
). However, the distinction of “dark brown” or “brown” antennae is not a secure difference, and the original description of
smilax
also pointed out distinct reticulation present on tergites V–VIII in a female.
Tyagi (2014)
identified as
niger
some brachypterous specimens in
India
and noted variation in the position of the metanotal median setae and campaniform sensilla. Similar variation was observed by
Hu & Feng (2014)
, with the description of males and the frequent variation in wing length.
Hu & Feng (2011)
also recorded the distribution of
smilax
in
China
, with males having a pore plate on abdominal sternites III–V. However, in the present study we examined two males of
smilax
identified by Bhatti that were collected from the same plant and at the same location and almost the same time as the
paratypes
of this species. These males have a large pore plate only on abdominal sternites III–IV instead of III–V. Moreover, these two males have normal antennal segment VI, with fewer setae on the distal half, while the males identified as
smilax
from
China
by
Hu & Feng (2011)
have antennal segment VI longer with more setae, and some setae situated on the basal half. Moreover, the length of tergite I median setae S1 of this species is also variable, two males collected by Bhatti have quite long median setae on tergite I, and one female from
Nepal
has these setae short and small. Among specimens collected in
China
, the length of these setae varies within populations from about 0.25 to 0.5 of the length of tergite I (Zhang SM,
pers. comm.
2018). All the former descriptions failed to mention the mesosternopleural sutures, but according to the specimens observed in this study, weak meso-sternopleural sutures are present, and of the three brachypterous specimens from
India
, one has a weakly developed suture on one side (Tyagi K,
pers. comm
. 2018). Therefore
niger
is here considered a synonym of
smilax
, and the diagnosis of
smilax
is as follows: female macropterous, brachypterous or micropterous, head with ocellar setae I present (
Fig. 6
), postocular setae pair I present and situated ahead of setal rows; antennae completely brown with base of segment III sometimes slightly paler (
Fig. 35
); metanotal median setae close to anterior margin or behind margin, campaniform sensilla situated in the middle or on posterior third; mesosternal sternopleural sutures present (
Fig. 26
); tergites hexagonally reticulate but rather smooth near posterior margin; male with pore plate on abdominal sternites III–IV and antennal segment VI with all setae arising in distal half.
Material examined:
CHINA
,
Yunnan
,
Mt. Ailao
, Alt.
2460m
,
1 female
from
Asteraceae
10.vi.2011
(
Q.L. Hu
) (
NWAFU
)
.
NEPAL
,
Parbat Distr.
,
Goropani
,
2750m
,
1 female
,
5.x.1983
(
I. Löbl
) (
SMF
)
.
INDIA
,
Bhaderwah
,
2 males
from fern,
2.vi.1976
(
J.S. Bhatti
) (
BMNH
&
SMF
)
.