Anoplius

This is a complex key. And it is a large genus with the whole group comprising a quarter to a third of all the likely species in Arkansas and the south central region. First portion of the key is to Evan's subgroups within the genus and the latter portion breaks the groups down to species. All wasp sections have to be divided into male and female keys because of the very useful structures in the male wasp genitalia for those specimens. In some species the females are unknown to collectors or science (or were at the time of Evans work). Scans are being added as possible from the Evans paper. Some scans are once again from the Sphecid Wasps of the World by Bohart and Menke.


   Females

 

1 Front tarsus without a comb, the second segment with only 1 to 3 very small spines on the outer side, much shorter than that at the apex of the segment; transverse median vein of fore wing usually meeting the media beyond the origin of the basal vein

Anoplius Group

 

1 Front tarsus with a true comb, that is, there is a single spine on the outer side near the middle of the second segment which is as long as that at the apex of the segment

 

2

 

2 Anterior margin of clypeus with a distinct median emargination; posterior margin of pronotum arcuate; head, thorax, and propodeum with abundant erect hairs

 

Lophopompilus Group

 

2 Anterior margin of clypeus with a distinct emargination only in a few species, and in these either pronotum is angulate behind or the propodeum is without erect hairs or practically so

 

3

 

3 Transverse median vein of fore wing meeting the media beyond the origin of the basal; third submarginal cell usually petiolate; spines of the tarsal comb from one to two times as long as the thickness of the tarsus; wings never wholly deep fuliginous

 

Pompilinus Group

 

3 Transverse median vein of fore wing meeting the media at or slightly before the origin of the basal (rarely slightly beyond, but tin this case either the spines of the tarsal comb are more than twice as long as the thickness of the tarsus, or the wings are wholly deep fuliginous)

 

4

 

4 Marginal cell very long, removed from the wing-tip by not more than its own length, the radial vein nearly evenly arched; third submarginal cell large, wider on the radius than the second submarginal; front narrow; spines of the tarsal comb very short

Anopliodes group

Anoplius bolli Banks

 

4 Marginal cell of variable length, the radial vein always somewhat angled at the third transverse cubital vein; third submarginal cell much narrowed above, shorter on the radius than the second, occasionally triangular or petiolate

 

5

 

5 Apical margin of clypeus with a median emargination; front narrow, the middle interocular distance not over .56 times the transfacial distance

Notiochares group

Anoplius amethystinus atramentarius (Dahlbom)

 

5 Apical margin of clypeus truncate or slightly concave, except in one species in which the front is very broad, the middle interocular distance varying from .57 to .60 times the transfacial

Arachnophroctonus Group

 

 

   Males

 

1 Subgenital plate with a large plumose process at its base which projects from the emargination of the preceding sternite; head, thorax, and propodeum with abundant erect hairs

 

Lophopompilus Group

 

1 Subgenital plate without a plumose process

2

 

2 Sternite 4 of the abdomen with a semicircular area of dense, felt-like pubescence along its posterior margin; subgenital plate with a sharp, V-shaped incision apically, internally with lateral expansions which terminate in a group of stout setulae

 

 

Notiochares group

Anoplius amethystinus atramentarius (Dahlbom)

 

2 Sternite 4 without such a patch of felt-like pubescence; subgenital plate without a sharp, V-shaped incision or basal lateral expansions

3

 

3 Last segment of front tarsus unmodified, the sides nearly parallel, not at all produced; wings subhyaline basally, darker apically; marginal cell long, the third submarginal wide above; basal hooklets of genitalia wanting

Anopliodes group

Anoplius bolli Banks

 

 

3 Last segment of front tarsus with the inner margin slightly to strongly produced, the segment thus asymmetrical (barely so in one species having wholly deep fuliginous wings); basal hooklets well developed

4

 

4 Transverse median vein of fore wing meeting the media at or slightly before the origin of the basal

5

 

4 Transverse median vein of fore wing meeting the media beyond the origin of the basal vein

6

 

5 Either (a) the wings rather heavily infuscated, usually wholly and uniformly so; or (b) the propodeum without more than some very short, inconspicuous erect hairs; propodeum with the slope very slight in front (see image at 6 below)

Arachnophroctonus Group

 

5 Wings hyaline or subhyaline, with a darker marginal band; propodeum with noticeable dark hairs; slope of propodeum low and nearly even from front to rear (see image at 6' below)

Anoplius Group

 

6 Propodeum, in profile, with the slope very slight in front, steepened behind; third submarginal cell nearly always petiolate; parameres of genitalia long, usually broadened apically

 

Pompilinus Group

 

6 Propodeum with the slope low and nearly even from front to rear; third submarginal cell only occasionally petiolate; parameres slender or broad, but not broader apically than near the base, often rather short

 

Anoplius Group

 

 

Key Main