A new species of Brethesiella (Hymenoptera: Encyrtidae) from California, USA, a parasitoid of Steatococcus tabernicolus (Hemiptera: Margarodidae)
Author
Trjapitzin, Vladimir A.
Author
Triapitsyn, Serguei V.
text
Zootaxa
2006
2006-04-06
1167
1
16
journal article
27082
10.5281/zenodo.2645485
b0d92a8d-4eef-4a58-83a9-e7f3fa078ef0
1175-5326
2645485
2F4FCA0C-DE18-48AF-B8EA-C82EFCC420D9
Brethesiella
Porter, 1920
Brethesia
Timberlake 1919
: 190
–192.
Type
species:
Brethesia latifrons
Timberlake, 1919
, by original designation. [Junior homonym of
Brethesia
Schrottky, 1909
].
Brethesiella
Porter 1920
(
February 29
th
[the article is dated
February 21
st
]): 16. [Replacement name for
Brethesia
Timberlake, 1919
].
Brethesiella
Timberlake 1920
(
April 30
th
): 96. [Replacement name for
Brethesia
Timberlake, 1919
].
Aztecencyrtus
Timberlake 1926
: 16
–18.
Type
species:
Aztecencyrtus flavus
Timberlake, 1926
, by monotypy and original designation.
Syn. n.
Perissodromus
Blanchard 1940
: 107
.
Type
species:
Perissodromus longipes
Blanchard, 1940
, by monotypy. Synonymized under
Brethesiella
by
De Santis 1964
: 169
, 171.
Neocopidosoma
Blanchard 1940
: 126
.
Type
species:
Neocopidosoma coccidophaga
Blanchard, 1940
, by monotypy. [Junior homonym of
Neocopidosoma
Ishii, 1923
]. Synonymized under
Brethesiella
by
Noyes 1980
: 183
.
Noblanchardia
Ghesquière 1946
: 369
. [Replacement name for
Neocopidosoma
Blanchard, 1940
]. Synonymized under
Brethesiella
by
Noyes 1980
: 183
.
Brethesiella
Porter
:
De Santis 1964
: 169
–171;
De Santis 1979
: 206
–207;
Noyes 1980
: 183
.
Noblanchardia
Ghesquière
:
De Santis 1964
: 175
, 176.
Aztecencyrtus
Timberlake
:
De Santis 1979
: 242
;
Noyes 1980
: 180
.
Diagnosis
FEMALE. Occipital margin sharp. Eye with concave posterior margin, kidneyshaped in lateral view. Antennal scrobes not meeting above. Antenna slender, not broadened; scape much longer than wide, subcylindrical; pedicel subconical, longer than wide; funicle 6segmented, with F1 very short, ringlike; clava 3segmented, with third claval segment obliquely truncate ventrally. Mandible with 3 teeth, the middle tooth relatively large, much larger than lateral teeth; maxillary palpus 4segmented, labial palpus 2 (the
flava
species group) or 3segmented (the
latifrons
species group). Mesoscutum with notauli indicated anteriorly only. Wings not abbreviated; submarginal vein without a triangular expansion; marginal vein punctiform or at most
2x
as long as wide; stigmal vein almost straight, with an uncus at apex; postmarginal vein well developed, usually at least somewhat shorter than stigmal vein. Legs long and slender; midtibial spur very long, as long as or slightly longer than mid basitarsus. Hypopygium reaching apex of gaster; paratergites absent; ovipositor either not or slightly (by not more than 1/5 of total length of ovipositor) exserted (the
latifrons
species group) or strongly (by at least 1/2 of total length of ovipositor) exserted (the
flava
species group) beyond apex of gaster.
MALE. Antennal clava entire, more or less rounded at apex or obliquely truncated dorsally. Genitalia without parameres.
Comments
Brethesiella
is placed in the tribe Homalotylini, subtribe Brethesiellina (
De Santis 1964
;
Trjapitzin 1973
;
Noyes 1980
).
Aztecencyrtus
Timberlake
also belongs in Brethesiellina (
Trjapitzin 1973
) and differs from
Brethesiella
mainly in having a different palpal formula (4: 2) and a very long ovipositor; however, we consider these at most speciesgroup, rather than generictype characters, so a synonymy of
Aztecencyrtus
under
Brethesiella
is proposed here (also considering the fact that their ranges overlap and both genera parasitize similar hosts). Indeed, both described species of
Aztecencyrtus
were reared from margarodids:
A. flavus
Timberlake
from
Icerya palmeri
Riley & Howard
in
Mexico
(
Timberlake 1926
) and
A. iceryae
(Howard)
from
Crypticerya rosae
(Riley & Howard)
in
Jamaica
(
Howard 1892 [as
Cerchysius
]
).
Key to species of
Brethesiella
, females
1 Ovipositor at most a little (not more than by 1/5 of total length of ovipositor) exserted beyond apex of gaster (
latifrons
species group)............................................................ 2 Ovipositor strongly exserted (by at least 1/2 of total length of ovipositor) beyond apex of gaster (
flava
species group) ...................................................................................... 5 2 Postmarginal vein short, at most 0.5x as long as stigmal vein
B. latifrons
(Timberlake)
Postmarginal vein at least 0.6x as long as stigmal vein ................................................ 3 3 Pedicel 1.2–1.3x as long as F2
.............................................
B. abnormicornis
(Girault)
Pedicel at least 1.5x as long as F2................................................................................. 4
4 Vertex less than 1/3 head width. Pedicel 1.5–1.6x as long as F2. Ovipositor not exserted beyond apex of gaster
.................................................
B. longipes
(Blanchard)
Vertex about 1/2 head width. Pedicel at least 2.0x as long as F2 (
Fig. 1
). Ovipositor projecting beyond apex of gaster by 1/6–1/7 total length of ovipositor (
Fig. 2
) ............
..............................................................................................................
B. mojave
,
sp. n.
5 Postmarginal vein about as long as stigmal vein (
Fig. 8
) ...............................................
......................................................................................
B. flava
(Timberlake)
,
comb. n.
Postmarginal vein about 0.6x as long as stigmal vein (
Fig. 10
) .....................................
........................................................................................
B. iceryae
(Howard)
,
comb. n.