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Chrysis severa Mocsáry
Chrysis praestans de buysson

Life   Insecta   Hymenoptera   Chrysidoidea   Chrysididae   Chrysis

Chrysis severa, head
R. M. Bohart L. S. Kimsey, 1982 · 1
Chrysis severa, head

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Chrysis severa, face
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, face
Chrysis severa, tail
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, tail

Chrysis severa, top
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, top
Chrysis severa
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa

Chrysis severa, face
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, face
Chrysis severa, tail
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, tail

Chrysis severa, face
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, face
Chrysis severa, female, face
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, female, face

Chrysis severa, female, tail
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, female, tail
Chrysis severa, female, tail
Native Bee Inventory and Monitoring Lab; Photographer: Erika Tucker · 1
Chrysis severa, female, tail

Chrysis severa, male paramere
R. M. Bohart and L. S. Kimsey · 1
Chrysis severa, male paramere
Chrysis severa, S8
R. M. Bohart and L. S. Kimsey · 1
Chrysis severa, S8
Overview
Chrysis praestans Buysson
(Figs. 288, 307, 313)
Chrysis praestans Buysson 1898:144. Holotype female, Granada, West Indies (Paris).

Discussion: The most distinctive feature of this species is the long malar space (fig. 288), 2.0 to 3.0 MOD in both sexes. None of the other nearctic Chrysis in the smaragdula group have a malar space longer than 1.5 MOD. Additional diagnostic features of praestans are: F-I more than twice as long as broad, propodeal teeth lobate beneath, T-III area beyond pit row not depressed between medial teeth which are about as long as basal width, most lateral tooth forming a right angle or acute. The paramere (fig. 307) resembles that of wasbaueri although it is more sparsely setose and S-VIII tends to be shorter and broader than that of other species in this group (fig. 313).

Material examined: 45 males, 66 females including type.

Distribution: California, New Mexico, Colorado, Montana, Washington, Idaho, Kansas, Virginia, Nevada, Arizona, Oregon, New Jersey, Missouri, Iowa, Wyoming, Tennessee; Kentucky, Utah; Manitoba, Alberta, British Columbia; San Luis Potosi, Coahuila; West Indies. Collection dates are June through September.



Species group of Chrysis smaragdula Fabricius
Diagnosis: Male F-I variable, sometimes shorter than F-II or F-III, sometimes longer than either, 1.0-2.0 times as long as broad, female F-I 2.0-2.5 times as long as broad; subantennal distance 1.0- 2.5 MOD, often shorter than malar space which is 0.5 (tularensis) to 2.5 (praestans) MOD; transverse frontal carina completeto near eye, partial, or absent, not curved in below, usually without backward branches; midocellus surmounted by a thin eyelidlike fold; genal carina separated from eye by at least a narrow pitted area; mesopleuron sometimes dentate, metanotum simple; T-II sometimes with a partial and polished median longitudinal ridge, posterolateral corner 90 degrees or acute; T-III single or double edged, six toothed, lateral edge straight to moderately convex; male genitalia fairly uniform, paramere usually tapering abruptly to slender apical lobe.
Included species: archboldi Kimsey, arizonica Bohart, bequaerti Bohart, brooksi Kimsey, Cresson, inaequidens Dahlbom, intricata Brulle oraria Bohart, praestans Buysson, serrata Taylor, smaragdula Fabricius, tularensis Bohart, and wasbaueri Bohart.
Discussion: Members of this group are medium to large chrysidids with 6 teeth on T-III. A combination of characters distinguish them from our other hexadentate species in the genus: midocellus lidded, frontal carina present, genal carina separated from eye, posterolateral corner of T-II a right angle or acute, no median pit in T-III row, and paramere relatively simple. C. aridula has the posterolateral angle of T-II obtusely rounded, and has a large median pit in the T-III row. C. tenuicornis has the midocellus unlidded, T-II obtuse posterolaterally, and many peculiar features. The smaragdula species group was assigned by Bodenstein (1951:725) to the subgenus Pyria, but it has been amply demonstrated that Pyria, with a greatly reduced F-I in both sexes, as well as a produced or distorted metanotum, is a distinct genus which does not occur in the New World. Bohart (1962) reviewed our hexadentate Chrysis and provided many illustrations.
Based on the three species for which data are available, the smaragdula group attacks Eumenidae: Monobia, Euodynerus, Pachodynerus, Stenodynerus, and Parancistrocerus.

Key to the Chrysis smaragdula group

1. Mesopleuron with two large polished knobs (fig. 294) ………………………………..2
Mesopleuron without two large polished knobs ……………………………………….4
2. IOD about 0.8 OOD, malar space a little less than 1.0 MOD and shorter than subantennal distance ………………………………………………………brooksi Kimsey
IOD equal to OOD; malar space 1.0 MOD or more …………………………………...3
3. Malar space longer than subantennal distance, S-II spots confluent, forming a narrow medial spot in female and large subrectangular or trilobate spot in male, length 8-11 mm ……………………………………………………………………………..intricata Brulle
Malar space shorter than subantennal distance; S-II spots touching, forming a linear black stripe across sternum in both sexes; length 11-15 mm ……….smaragdula Fabricius
4. Malar space 1.0 MOD long or shorter, usually a little less and in any case shorter than subantennal distance ……………………………………………………………………..5 Malar space more than 1.0 MOD long and equal to or longer than subantennal distance …………………………………………………………………………………..8
5. T-III lateral tooth broadly obtuse ……………………………………..tularensis Bohart
T-III lateral tooth right angled or acute ……………….6
6. Clypeal margin strongly emarginate (fig. 289), emargination almost 1.0 MOD deep; T-III medial ridge of pit row sunken and more weakly developed than adjacent ridges (fig. 299) ………………………………………………………………………….serrata Taylor
Clypeal margin weakly concave, concavity less than 0. 5 MOD deep, T-III medial ridge not particularly sunken and more strongly developed than adjacent ridges ……….7
7. Propodeal tooth weakly lobate beneath, clypeus broadly rounded medially, T-III with edge of submedia.l notch slightly thickened but not bicarinate ……….…bequaerti Bohart
Propodeal tooth slightly convex or straight beneath, clypeus subconical medially, T-III with edge of submedial notch thickened and bicarinate (figs. 297, 300) ……clara Cresson
8. Malar space at least 2.0 MOD long (fig. 288) subantennal distance 1.5 to 2.0 MOD, F-I usually longer than 2.2 times breadth (fig. 288) ……………………….praestans Buysson
Malar space less than 2.0 MOD long, subantennal distance less than 1.5 MOD, F-I length usually less than 2.2 times breadth ………………………………………………..9
9. Propodeal teeth slightly convex beneath (fig. 290) …………………….10
Propodeal teeth strongly lobate beneath (fig. 291), lobe about equal to size of midocellus ……………………………...11
10. T-III medial and submedial teeth pronglike, much longer than wide at base, medial and submedial notches incised to pit row (fig. 296), pit row overhung by transverse swelling …………………………………………………………………..arizonica Bohart
T-III medial and submedial teeth subtriangular, about as broad at base as long (or broader), medial and submedial notches not incised to pit row, transverse swelling above pit row weakly developed and not overhanging pits ……………………archboldi Kimsey
11. T-III medial and submedial teeth much longer than broad at base ………oraria Bohart
T-III medial and submedial teeth subtriangular, about as long as broad or broader at base ……………………………………………………………………………………...12
12. T-III edge of submedial notch thickened and bicarinate (fig. 302), transverse swelling preceding pit row large, forming nearly a right angle in lateral view (fig. 302) …………………………………………………………………………...wasbaueri Bohart
T-III edge of submedial notch not thickened or bicarinate, transverse swelling preceding pit row usually small, forming an obtuse angle inlateral view ………………………………………………………………………inaequidens Dahlbom

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Updated: 2018-07-16 05:23:22 gmt
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