Parkerodynerus Fateryga, 2021

Fateryga, A. V., 2021, Two new Nearctic genera in the tribe Odynerini s. str. revealed on the bionomics and morphology, with a comment on the cocoons of the eumenine wasps (Hymenoptera: Vespidae: Eumeninae), Far Eastern Entomologist 427, pp. 1-19 : 9-11

Genus Parkerodynerus Fateryga , gen. n.

http://zoobank.org/NomenclaturalActs/ 87229E9E-360A-49EC-9DD2-C9070C9101CA

Type species: Odynerus erythrogaster Bohart, 1939 , here designated.

DIAGNOSIS. The new genus is closely related to Bohartodynerus gen. n. and can be also distinguished from the genus Odynerus by a narrow apical margin of the clypeus, the absence of distinct pronotal foveae, sharply impressed notauli and distinct parapsidal lines,

the tegula with a small but evident inner posterior angle where it adjoins the scutum, a dense short pilosity of the posterior sterna in the male, a different structure of the male genitalia,

and a reddish pattern. At the same time, Parkerodynerus gen. nov. differs from Bohartodynerus gen. n. by the truncate apical margin of the clypeus with rectangular lateral teeth in the female ( Fig. 24 ), a larger flagellomere 11 in the male ( Fig. 29 ), very large and deep cephalic foveae, separated by a distance significantly smaller than that between lateral ocelli in the female ( Fig. 25 ), the pronotal carina, which is strongly developed and forming large acute angles at the anterolateral corners of the pronotum ( Fig. 26 ), the absence of a distinct epicnemial carina, the presence of a sharp sub-basal carina bordering shallow concavity at the base of the mid femur in the male, the presence of a distinct basomedian longitudinal sulcus lateral view; 24 – clypeus; 25 – head, frontal view, arrow indicates a cephalic fovea; 26 –

pronotum and mesonotum; 27 – tegula, arrow indicates the inner posterior angle); 28–31 –

male (28 – clypeus; 29 – apex of antenna; 30 – mid leg beneath, arrow indicates the basal concavity; 31 – genitalia, dorsal view). Photos by M.Yu. Proshchalykin.

on the sternum 2, and a narrower aedeagus, which is rounded apically in the male ( Fig. 12 ).

The new genus is also somewhat similar to Gymnomerus due to its relatively slender body form and the structure of the pronotum but the latter taxon has the clypeus widely and deeply emarginate, mandible with a notch in both sexes, small and shallow cephalic foveae in the female, mid femur without a basal concavity in the male, the male posterior sterna without dense short pilosity, and different genitalia, particularly the aedeagus ( Fig. 9 ).

DESCRIPTION. Female. Head about 1.1 as wide as long in frontal view; clypeus about

1.2 as wide as long, with apical truncation as wide as distance between antennal foveae, apical teeth rectangular ( Fig. 24 ). Mandible without notch. Proboscis short, not reaches mid coxae.

Maxillar palpi with 6 articles; labial palpi with 4 articles. Vertex approximately as long as upper portion of compound eye in dorsal view; cephalic foveae large and deep, separated by distance significantly smaller than that between lateral ocelli ( Fig. 25 ). Anterior face of pronotum without distinct foveae; pronotal carina strongly developed, forming large acute angles at anterolateral corners of pronotum; pronotum beneath without acute angle anteriorly. Notauli sharply impressed, running entire length of scutum; parapsidal lines present on distal 2/3 of scutum; scutum evenly punctured ( Fig. 26 ). Tegula small, nearly rounded posteriorly but with evident inner posterior angle where it adjoins scutum ( Fig. 27 ); parategula very small.

Epicnemial carina indistinct. Scutellum rather flat; axillary fossa deep. Metanotum rounded posteriorly. Propodeal shelf not developed. Propodeal concavity rather flat, its lateral borders rounded. Propodeal valvula entire. Second submarginal cell of fore wing not petiolate, with acute basal angle. Parastigma shorter than pterostigma. Tergum 1 hardly petiolate, without transverse carina at summit and without apical furrow. All metasomal terga without apical lamellae. Sternum 2 with distinct basomedian longitudinal sulcus. Black wasps with reddish pattern and mostly dark pilosity ( Fig. 23 ).

Male. Resembles female but clypeus as wide as long, with apical emargination and acute apical teeth; clypeus covered with pale appressed setae besides erect dark pilosity ( Fig. 28 ).

Gena without projection behind mandible. Antenna with flagellomere 10 not much shorter than flagellomere 11; apex of antenna forming loose coiling ( Fig. 29 ). Fore femur beneath without sharp edge. Mid coxa without projection; mid femur with sharp sub-basal carina bordering shallow concavity ( Fig. 30 ). Sterna 3–6 with dense short pale pilosity. Genitalia as in Fig. 31 . Aedeagus not very broad, rounded apically ( Fig. 12 ).

ETYMOLOGY. The new genus-group name is dedicated to Frank D. Parker, an outstanding entomologist, for his significant contributions to the taxonomy and bionomics of the

American eumenine wasps, including the bionomics of the species in this new genus. The gender is masculine.

SPECIES INCLUDED. Parkerodynerus erythrogaster (Bohart, 1939) , comb. n. only.

DISTRIBUTION. Nearctic region ( USA, Mexico).

Figures

Figs 23–31. Parkerodynerus erythrogaster (Bohart, 1939): 23–27 – female (23 – habitus,

Figs 7–12. Aedeagus, dorsal view: 7 – Paravespa (Paravespa) quadricolor (Morawitz,