Genus Evagetes


This key is constructed from H. E. Evan's Taxonomic Study of the Nearctic Spider Wasps Belonging to the Tribe Pompilini from 1951. Likely includes all expected species in this genus in Arkansas for both sexes. There are five other northern and western species.

Females

 

1  Posterior margin of pronotum broadly arcuate, at most with a very small angulate notch in the middle; body rendered by the pubescence more or less brilliantly bluish, violet or blue-green

2

1' Posterior margin of pronotum angulate or subangulate, rarely nearly arcuate; pubescence at most obscurely reflecting metallic colors

subangulatus

 

2 Front and hind wings wholly and uniformly deep fuliginous; body wholly without silvery pubescence, even on the lower front; submedian cell of hind wing usually broadly rounded or somewhat truncate apically, sometimes appendiculate, size 10.5 to 18mm

ingenuus

 

2 Wings not wholly fuliginous (when nearly so, the lower front, at least, silvery-sericeous); submedian cell of hind wing pointed or narrowly rounded apically, never appendiculate

3

 

3 Front basitarsus with three short comb-spines, the apical one not equal to more than .8 the second tarsal segment; color dark bluish or purplish, not very brilliant, at most in small part silvery-sericeous

parvus

 

3 Front basitarsus more strongly spined, either with three comb-spines, the apical one subequal to or longer than the second segment, or with four or five comb-spines; body rather brilliantly metallic-refulgent and/or extensively silvery

4

 

4 Front basitarsus with from 3 to 5 (usually 4) comb-spines, the spines somewhat braod and flat, the apical one on the basitarsus subequal to or a little longer than the 2nd tarsal segment; propodeum at least slightly hairy; 3rd submarginal cell small, usually shorter above and below than the 2nd, or wider

hyacinthus

 

4 Front basitarsus with 3 very long, slender comb-spines, the apical one considerably longer than the 2nd tarsal segment; propodeum without erect hair; 3rd submarginal cell small, usually shorter above and below than the 2nd, often triangular

 

padrinus minisculus

 

 

Males

 

1  Marginal cell very long, less than its own length from the apex of the wing; stigma very large; apex of abdomen compressed, the subgenital plate strongly so, though the apical abdominal segments are usually telescoped into the basal ones (sometimes short-antennaed males of this species keys to this genus key)

Agenioideus birkmanni

1' Marginal cell at least its own length from the wing-tip; stigma small or of moderate size; subgenital plate not strongly compressed

Evagetes species

 

2 Subgenital plate with the median line elevated in the form of a ridge which is arcuate in profile; 3rd submarginal cell small, shorter above and below than the 2nd, sometimes petiolate

padrinus minisculus

 

2 Median line of subgenital plate only feebly elevated; 3rd submarginal cell usually at least as wide below as the 2nd

3

 

3 Front and hind wings wholly and almost uniformly deep fuliginous; submedian cell of hind wing usually broadly rounded or somewhat truncate apically, sometimes appendiculate; 3rd antennal segment about twice the length of 2nd, which is very short

ingenuus

 

3 Wings not wholly fuliginous; submedian cell of hind wing pointed or narrowly rounded apically, never appendiculate; 3rd antennal segment not twice the 2nd

4

 

4 Posterior margin of pronotum subangulate; vestiture deep blue-black, nowhere silvery; digiti of genitalia subclavate, the apex scarcely extended inward

subangulatus

 

4 Posterior pronotal margin arcuate, at most with a slight median notch; pubescence markedly bluish and/or silvery; digiti to some extent produced inward at apex

5

 

5 Propodeum without more than a very few inconspicuous erect hairs on the sides apparent above the coarse silvery pubescence; front barely to moderately hairy; digiti less strongly extended inward apically, sparsely and rather uniformly setose

parvus

 

5 Propodeum usually with noticeable dark erect hairs; front with abundant erect hairs just above the antennal bases; digiti slightly more strongly extended inward apically, clothed with numerous short setae which tend to be crowded toward the upper, outer angles

hyacinthus

 

Pompilid list