A review of the tachinid parasitoids (Diptera: Tachinidae) of Nearctic Choristoneura species (Lepidoptera: Tortricidae), with keys to adults and puparia
Author
O’Hara, James E.
text
Zootaxa
2005
938
1
46
journal article
10.5281/zenodo.171153
33181367-eefc-4e3a-90f2-ca6390420139
11755326
171153
Key to adults of tachinid parasitoids of Nearctic
Choristoneura
species
1. Eye bare or very sparsely haired .................................................................................. 2
– Eye densely haired (
Figs. 1–3
)...................................................................................... 4
2. Wing vein
R
1 bare dorsally
......................................................
Ceromasia auricaudata
– Wing vein
R
1 haired dorsally along most of its length (
Figs. 12–13
) ........................... 3
3. Wing vein
CuA
1 usually bare dorsally (very rarely with 1–3 hairs) and distal portion of
CuA
1 0.27–0.38 length of proximal portion (
Fig. 12
); male with flagellomere 1 not enlarged (
Fig. 37
)
....................................................................................
Actia diffidens
– Wing vein
CuA
1 usually haired dorsally most of distance to crossvein
dmcu
(very rarely with as few as 4 hairs) and distal portion of
CuA
1 0.37–0.51 length of proximal portion (
Fig. 13
); male with flagellomere 1 enlarged (
Fig. 38
)
...........
Actia interrupta
4. Prosternum bare
..................................................................................
Lypha fumipennis
– Prosternum haired (
Fig. 14
) ......................................................................................... 5
5. Katepisternum with four setae (
Fig. 4
)
........................................................
Nilea erecta
– Katepisternum with two or three setae (
Figs. 5–6
,
11
) ................................................. 6
6. Facial ridge haired on 1/2 or more of distance between vibrissa and lower margin of scape (
Figs. 1–2
) .......................................................................................................... 7
– Facial ridge haired on 1/3 or less of distance between vibrissa and lower margin of scape (
Fig. 3
)............................................................................................................... 11
7. Eye very large, distance between eye and lower margin of head in lateral view not wider than basal width of maxillary palpus (
Fig. 43
); two katepisternal setae; katepimeron haired along most of length
.........................................
Hemisturmia parva
– Eye smaller, distance between eye and lower margin of head in lateral view several times wider than basal width of maxillary palpus (
Figs. 1–2
); three katepisternal setae (
Figs. 5–6
); katepimeron bare or with one to several hairs anteriorly (
Fig. 11
) ........... 8
8. Maxillary palpus (
Fig. 2
) dark coloured; katepisternum with lowermost seta nearly equidistant between outer two setae (
Fig. 6
) ................................................................ 9
– Maxillary palpus yellow; katepisternum with lowermost katepisternal seta closer to anterior than posterior seta (as in
Fig. 5
)..................................................................... 10
FIGURES 1–10
.
1
.
Phryxe pecosensis
, male head.
2
.
Madremyia saundersii
, male head.
3
.
Smidtia fumiferanae
, male head.
4
.
Nilea erecta
, katepisternum.
5
.
Eumea caesar
, katepisternum.
6
.
Phryxe pecosensis
, katepisternum.
7
.
Cyzenis incrassata
, scutellum.
8
.
Compsilura concinnata
, scutellum.
9
.
Hyphantrophaga blanda
, dorsal view of mid leg.
10
.
Eumea caesar
, dorsal view of mid leg.
Abbreviations: ad s, anterodorsal setae; a kepst s, anterior katepisternal seta; ar 3, aristomere 3; a scut s, apical scutellar seta; d scut s, discal scutellar seta; fc rd s, facial ridge setae; l fr s, lowermost frontal seta; l kepst s, lowermost katepisternal seta; max plp, maxillary palpus; oc s, ocellar seta; pafc h, parafacial hairs; p kepst s, posterior katepisternal seta.
FIGURES 11–13
.
11
. Lateral view of tachinid thorax.
12
.
Actia diffidens
, right wing.
13
.
Actia interrupta
, right wing.
Abbreviations (not including veins and crossveins): f cx, fore coxa; h cx, hind coxa; kepm, katepimeron; kepst, katepisternum; trn sut, transverse suture.
9. Facial ridge with hairs decreasing to tiny size on upper portion of haired area (
Fig. 1
); aristomere 3 evenly tapered to tip (
Fig. 1
)
...........................
Phryxe pecosensis
, in part
– Facial ridge with strong setae only (
Fig. 2
); aristomere 3 thickened along most of length and tapered near tip (
Fig. 2
)
............................................
Madremyia saundersii
10. Scutellum (
Fig. 11
) with posterior half orange; discal scutellar setae narrowly separated, distance between them not greater than distance between apical scutellar setae (
Fig. 7
); female with tiny nonpiercing ovipositor; ocellar setae well developed (as in
Fig. 3
)
...............................................................................................
Cyzenis incrassata
– Scutellum mostly gray; discal scutellar setae more widely spaced, distance between them twice the distance between apical scutellar setae (
Fig. 8
); female with long piercing ovipositor (
Fig. 40
); ocellar setae usually absent or very weak ...............................
...................................................................................................
Compsilura concinnata
11. Parafacial with fine hairs on middle portion (
Fig. 3
)
.....................
Smidtia fumiferanae
– Parafacial bare (
Figs. 1–2
) or with a few hairs directly below lowermost frontal seta... ..................................................................................................................................... 12
12. Mid tibia with one anterodorsal seta (
Fig. 9
) ............................................................. 13
– Mid tibia with two or more anterodorsal setae (
Fig. 10
) ............................................ 15