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Genus Pachodynerus

Wasp - Pachodynerus nasidens - male id please - Pachodynerus erynnis Potter Wasp - Pachodynerus Family Vespidae - Mason and Pollen Wasps, ID please - Pachodynerus erynnis - female Insect Florida - Pachodynerus erynnis Wasp on Basil flower - Pachodynerus erynnis Wasp on Pentas - Pachodynerus erynnis Pachodynerus erynnis - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Vespoidea (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps and allies)
Family Vespidae (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps)
Subfamily Eumeninae (Potter and Mason Wasps)
Genus Pachodynerus
Synonyms and other taxonomic changes
revised in(1); our fauna reviewed in(2) (nomenclature obsolete)
Explanation of Names
Pachodynerus Saussure 1870
Numbers
5 spp. in our area(2), 45 total(3)
Identification
P. californicus - a restricted species known only from southern California and Baja California, Mexico. The markings are ivory to light yellow, with abdominal bands restricted to the margins of T1 and T2.


P. erynnis - a distinctive species and our only red-marked species of Pachodynerus. It can be separated from red-and-black species in other genera by the lack of a reddish spot behind the eyes.


P. guadulpensis - a yellow-marked species with abdominal bands on all segments. It can be separated from the cryptic P. nasidens / P. pulverulentus pair by the additional band on T1.


P. nasidens - a yellow-marked species with abdominal bands beginning on T2. Often not separable from P. pulverulentus from photos where the two co-occur in Texas and Arizona. The only of the pair to occur in CA and NV. Under microscopy(1)(2): ocellar area with distinct ridges, fore femur with a distinct longitudinal carina, scutum with dense golden pubescence, abdomen with punctation on T2 throughout gradually decreasing toward the anterior.


P. pulverulentus - a yellow-marked species with abdominal bands beginning on T2. Often not separable from P. nasidens from photos where the two co-occur in Texas and Arizona. The only of the pair to occur in FL. Under microscopy(1)(2): ocellar area lacking ridges, fore femur lacking a carina, scutum with sparse silvery-yellow pubescence, abdomen with punctation on T2 restricted to the apical margin (otherwise impunctate).
Range
New World, most diverse in S. America(1)
Works Cited
1.Revisión del género Pachodynerus Saussure (Hymenoptera: Vespidae, Eumeninae)
Willink A., Roig-Alsina A. 1998. Contrib. Am. Entomol. Inst. 30: 1-117.
2.The genus Pachodynerus in North America (Hymenoptera: Vespidae: Eumeninae)
Carpenter J.M. 1986. Proc. Ent. Soc. Wash. 88: 572-577.
3.Vespidae (Insecta: Hymenoptera) of Puerto Rico, West Indies
Carpenter J.M., Genaro J.A. 2011. Insecta Mundi 0202: 1-35.