Four new species of Estheria Robineau-Desvoidy (Diptera: Tachinidae) from China and Nepal, with a review of the East Palearctic and Oriental species
Author
Zhang, Chun-Tian
Author
Shima, Hiroshi
Author
Liang, Hou-Can
Author
Li, He-Nan
text
Zootaxa
2019
2019-05-08
4603
1
1
38
journal article
26817
10.11646/zootaxa.4603.1.1
8c3d903d-6d82-45d1-a1c0-b29f5b97d0c1
1175-5326
2841928
8A6746BE-616B-4FEC-AA37-E274F8508255
Estheria cristata
(
Meigen, 1826
)
(
Figs 6
,
18
,
30
,
42
,
58
,
69
,
84
,
97
,
112
)
Dexia cristata
Meigen, 1826
: 41
. Type locality:
Germany
(Stolberg).
Lectotype
♂
and one female
paralectotype
(MNHN) not examined. References:
Herting & Dely-Draskovits (1993
: 363
; Palearctic catalog);
Cerretti & Tschorsnig (2012
: 272
, 284; species, key);
Zhang
et al
. (2013
: 139
; checklist).
Estheria imperatoriae
Robineau-Desvoidy, 1830
: 306
.
Type
locality: St.-Sauveur (
France
).
Estheria floralis
Robineau-Desvoidy, 1830
: 306
.
Type
locality: St.-Sauveur (
France
).
Sarcophaga edax
Walker, 1849
: 832
.
Type
locality:
France
.
Diagnosis.
Frons of male about 1/7 of head width; facial carina indistinct; prementum 5–6 times as long as wide. Three strongest postpronotal setae arranged in a straight line; 3 postsutural dorsocentral setae; wing cell r
4+5
with a petiole at most 0.20 times as long as postangular section of M; costal spine about as long as crossvein r-m.
Redescription.
Body length: 9.0–
10.5 mm
.
Male.
Head covered with yellowish-white pruinosity (fronto-orbital plate, parafacial, face gena and occiput); frontal vitta dark brown; lunule reddish-brown; 1
st flagellomere
, pedicel and palpus reddish-yellow. Frons about 1/ 7 of head width; parafacial about 3 times as wide as 1
st flagellomere
; genal height 0.6–0.7 of eye height; facial carina indistinct or weakly developed; occiput usually with two rows of black setulae below postocellar seta row. First flagellomere about 2.2 times as long as pedicel; arista plumose, aristal hairs about as long as width of 1
st flagellomere
; prementum 5–6 times as long as wide.
Thorax black, covered with yellowish gray-white pruinosity, with 5 longitudinal dark vittae on presutural scutum and 4 vittae on anterior half of postsutural scutum; scutellum reddish-brown at least apically; 5–6 postpronotal setae, the strongest three arranged in a straight line; 2 presutural and 2 postsutural acrostichal setae; 3 presutural and 3 postsutural dorsocentral setae; 3 postsutural intra-alar setae; 3 supra-alar setae, the first one short; 3 katepisternal setae; scutellum with 3 pairs of marginal setae and a pair of discal setae.
Wing
hyaline, brownish; calypter milk-white, margin yellowish, lower calypter with short fringes on outer margin. Costal spine about as long as crossvein r-m, relative lengths of 2nd, 3rd and 4th costal sections approximately 1.1:2.3:1, radial node with 2–3 setulae dorsally and ventrally; cell r
4+5
closed near apex, with a petiole slightly shorter than crossvein r-m.
Legs
dark except for middle part of tibiae reddish-yellow. Fore tibia with 4 anterodorsal and 2 posterior setae; Fore claws and pulvilli longer than 5th tarsomere; mid femur with 4 strong anterior setae, mid tibia with 3 anterodorsal (upper two shorter), 2 posterior and 1 ventral setae; hind tibia with 1 upper (short) and 2 lower (long) anterodorsal setae, 1 upper (short) and 2 lower (long) posterior setae and 1 ventral seta, 2 apical dorsal setae, 1 long apical anteroventral and 1 short apical posteroventral setae.
Abdomen long-ovate, black, covered with dense and entirely grayish-white pruinosity on tergites; syntergite 1+2 medially excavated to posterior margin, without median marginal setae, with 1 lateral marginal seta and 2 lateral discal setae; tergite 3 with 2 median marginal setae, 1 lateral marginal seta and 2 median discal setae; tergite 4 with 2 median discal setae and a row of marginal setae, tergite 5 with rows of marginal and discal setae. Sternite 1 with black hairs.
Male terminalia
as in
Figs 6
,
18
,
30
,
42
.
Female.
As male, except as follows: head covered with grayish-yellow pruinosity. Frons narrowed posteriorly, about 3/5 of head width at narrowest point; parafacial about 4 times as wide as 1
st flagellomere
; gena about 3/4 of eye height; three proclinate outer orbital setae, 1 prevertical seta; ocellar seta strong, about as long as upper frontal setae; inner vertical seta about twice as long as outer vertical seta; occiput with 2 black setae below postocellar setae; 1
st flagellomere
about twice as long as pedicel. Fore claws pulvilli and shorter than 5th tarsomere. Abdomen ovate, tergite 5 with a pair of discal setae and 1–2 weak lateral discal setae.
Material examined.
China
,
Inner Mongolia
:
1 ♀
,
Dong Ujimqin Qi
,
Wulagai
,
22.VIII.1971
,
Y.-S. Shi
leg. (
IZCAS
)
.
Xinjiang
:
1 ♂
,
Jitai
,
Shuiding
,
460–480 m
,
12.VII.1957
,
C.-P. Hong
leg. (
IZCAS
)
.
Xizang
(=
Tibet
):
1 ♂
,
Milin
,
Songlinkou
,
3760 m
,
6.VIII.2015
,
H.-B. Liang
leg. (
IZCAS
)
.
Germany
:
1 ♂
,
Bayer
,
Wald au Teisnach
,
22.VII.1954
, [no collector], (
ZMHB
; det.
J. Ziegler
)
;
1 ♂
,
1 ♀
,
Baden-Württemberg
,
Willingen
,
7.VII.1997
,
H.-P. Tschorsnig
leg. (
SMNS
; det.
H.-P. Tschorsnig
)
.
Distribution.
China
(
Inner Mongolia
,
Xinjiang
,
Xizang
), Europe (northwards to
England
and
Germany
, Transcaucasus).
Hosts.
Coleoptera
,
Scarabaeidae
(
Phyllopertha horticola
) (Ziegler & Tschorsnig 2016: 346).
Remarks.
We have examined identified specimens from Europe and confirm that our specimens are conspecific with these. This species appears to be similar to
E. acuta
(Portschinsky)
, but differs in having longer prementum, 3 presutural and 3 postsutural dorsocentral setae, wing cell r
4+5
closed, with a petiole, wing not brownclouded around crossveins r-m and dM-Cu.