Taxonomic revision of the flavopalliata species group of Signiphora (Hymenoptera: Signiphoridae)
Author
Woolley, J. B.
Author
Dal Molin, A.
text
Zootaxa
2017
2017-08-31
4315
1
1
150
journal article
32248
10.11646/zootaxa.4315.1.1
1386f25d-9147-4038-8c94-6554c1eb409d
1175-5326
858445
4B923D2F-4D36-4AA1-BAC9-C9F1CE20E87B
Signiphora biloba
Woolley & Dal Molin
,
n. sp.
urn:lsid:zoobank.org:act:1EF01CF3-4D89-4E2F-9258-B5318ADA52E2
Figures 49–60
Diagnosis.
Mt1 shape unique and distinctive, consisting mostly of two widely separated lateral lobes (
Fig. 58
); female sternites with distinctive shape of anterior projections: those on Ms6 are of normal length, but those on Ms3–Ms5 are quite short. The small mandibles with very short teeth are also diagnostic. Other diagnostic features, in combination with the above, are a fore wing without discal seta and marginal vein with at least seta M1 absent, sometimes also M1 and M2. This is also one of the smallest species of
Signiphora
.
Description.
Female
.
Length, anterior margin of pronotum to epiproct apex,
0.34–0.36 mm
(n=5). Head mostly pale tan with distinct dark band at clypeus. Pronotum and anterior half of mesoscutum brown, posterior half of mesoscutum and metanotum pale yellow, propodeum slightly darker (tan); Mt1–Mt4 brown, remainder of metasoma pale yellow. Antenna entirely pale tan. Fore wing with normal coloration for
flavopalliata
group, with infuscated area extending just beyond stigma vein and two hyaline areas at wing base.
Head
. Vertex and frons weakly imbricate, with a few scattered punctations. Mandible with two very short teeth, the ducts not visible in slide mounts and apparently not well developed. Pedicel length:scape length 0.59– 0.70; 3 anelli, second anellus 1.3–3.0 the length of first, third anellus 2.67–4.0 the length of first, clava length:scape length 1.22–1.43.
Mesosoma
. Mesoscutum and medial sclerite of propodeum transversely imbricate. Scutellum with 4 setae and 2 campaniform sensilla, medial propodeal sclerite rounded, process on medial sclerite narrowly rounded. Fore wing without discal seta, length:width 3.9–4.2, fore wing LMS:fore wing width 2.1; marginal vein length:stigmal vein length 1.2–1.7; marginal vein with 4 or 5 dorsal and no ventral setae; M1 or M1 and M2 without setae; seta M3 length:marginal vein length 0.8–1.0, apical end of costal cell at M2 or M3. Hind wing with margins parallel, hind wing length:width 14.7; hind wing width:fore wing width 0.25; hind wing LMS:hind wing width 6.67.
Mesofemur with 1 long spine and usually 1 short spine on posteroapical margin about ¼–1/5 length of long spine, mesotibial spur with 2 or 3 teeth; mesotibial spur length:basitarsus length 1.06–1.07; basitarsus:mesotibia length 0.40–0.42.
FIGURES 49–52.
Signiphora biloba
n. sp.
: 49, head (TAMU-ENTO X0616378); 50, female antenna (TAMU-ENTO X0616380); 51, mandibles (TAMU-ENTO X0616380); 52, middle leg, female (TAMU-ENTO X0616381).
Metasoma
. Mt1 shape distinctive, consisting of two widely separated lobes; Mt1 length:Mt2 length subequal or Mt1 slightly longer than Mt2; ovipositor with anterior-most portion lying under Mt3–Mt5; ovipositor length:metasoma length 0.54–0.77; ovipositor sheath length:ovipositor length 0.18–0.23; Ms3–Ms6 with anterior projections distinctive, those on Ms6 long but those on Ms3–Ms5 very short; Ms
6 in
posterior ¼–posterior ¼–1/5 of metasoma and with 6–9 setae; Mt8 with anterodorsal margin apparently transverse with broad medial incision, but not clear in specimens examined.
Male
.
Unknown.
Discussion.
Unfortunately, the shape of Ms8 is not clear in any of the specimens available. A series of five specimens mounted in balsam (
Guatemala
, Cocales, coll. E.J. Hambleton,
16.v.1965
, ex:
Odonaspis
Leonardi
sp.) appears to be this species, but the specimens are in poor condition. So far as can be determined in this series, Mt1 has the distinctive bilobed shape of this species but the lobes are a bit wider and closer together than in the
type
series. In addition, the anterior projects on Ms3–Ms6 are longer than in the
type
series.
Type material. HOLOTYPE
♀: slide-mounted in balsam (TAMU-ENTO X0616380) “Ithaca, N.Y. March ’25”. Deposited in CUIC.
PARATYPES
:
Four
♀
mounted in balsam, same data (TAMU-ENTO X0616378– X0616379 and X0616381–X0616382); two additional
paratype
♀
in balsam, apparently from the same rearing, collected
Ithaca, N.Y.
,
March 19, 1925
, reared from
Diaspis boisduvalli
(Signoret)
on
Cattleya
by
Grace Griswold
,
USNM
ENT
0 0 763155 and
USNM
ENT
0 0 763156
. Paratypes deposited at CUIC, USNM, CNC, BMNH and TAMU.
Other
material examined.
GUATEMALA
:
5 ♀
,
USNM
ENT 763150–763154
(
USNM
).
Biology.
The
type
series was reared from
Diaspis boisduvalli
on
Cattleya.
Etymology
. The species name refers to the distinctive shape of Mt1. It is to be treated as an adjective.