Lestiphorus Lepeletier de Saint Fargeau, 1832

Mokrousov, M. V., Proshchalykin, M. Yu., & Aibek, U., 2020, Review of the Palaearctic species of Lestiphorus Lepeletier de Saint Fargeau (Hymenoptera: Crabronidae: Bembicinae), Far Eastern Entomologist 416, pp. 18-28 : 19-21

Genus Lestiphorus Lepeletier de Saint Fargeau, 1832

Lestiphorus Lepeletier de Saint Fargeau, 1832: 70 . Type species: Crabro bicinctus Rossi,

1794, by monotypy.

Lestophorus Agassiz, 1847: 208 . Unjustified emendation of Lestiphorus Lepeletier de Saint

Fargeau, 1832.

Hypomellinus Ashmead, 1899: 299 . Type species: Gorytes rufocinctus W. Fox, 1892 [=

Gorytes piceus Handlirsch, 1888 ], by original designation. Synonymized with Lestiphorus by Pate, 1936: 50.

Mellinogastra Ashmead, 1899: 300 . Type species: Gorytes mellinoides W. Fox, 1895 , by original designation. Synonymized with Lestiphorus by Krombein, 1939: 143.

DIAGNOSIS. Genus Lestiphorus , according to Bohart and Menke (1976) with clarifica-

tions, characterized by: moderate-sized wasps; inner eye margins essentially parallel, least interocular distance two to three times median clypeal length; mandible with an inner subtooth;

labrum inconspicuous, flagellum long and slender, FI longer than scape, last four flagello-

meres in male distinctively flattened or concave beneath; pronotal collar thin and rather closely appressed to scutum, female foretarsal rake well developed, fore basitarsus with three long setae before apex; female foreleg arolium much larger than other arolia, male arolia about equal on all legs; posterolerolateral oblique scutal carina present; anterior scutellar sulcus foveolate; epistenal and scrobal sulci faint or absent, scrobal sulcus not continued forward to omaulus. omaulus and sternaulus present, sometimes discontinuous; no acetabular carina; forewing usually spotted, media diverging before cu-a, stigma moderate, veinlet of submarginal cell II between recurrents about one-fourth posterior length of submarginal cell

I; jugal lobe considerably larger than tegula, hindwing media diverging at or very near cu-a which is nearly straight; midtibia with two apical spurs; metapostnotum usually longitudinally striate, unusually large and occupying more than half of horizontal surface of propodeum; spiracular groove lacking or visible near spiracle; T1 nodose apically; male with seven terga normally visible, sterna without fimbriae; sternum VIII deeply emarginate apically and bispinose; female pygidial plate variable, punctate to striate, sometimes short.

Key to the Palaearctic species of the genus Lestiphorus (males are unknown in L. nemkovi , L. pacificus and female is unknown in L. pictus )

1. T1 without apical constriction, convex to apex (Fig. 3) ...................................................... 2

– T1 with apical constriction, weak at some species, apical edge flattened (Figs 6, 15) ....... 3

2. T1 slightly elongate, ratio L/ W 1.1 –1.3×. Mesonotum and mesopleuron with dense fine punctures, without micropunctation. Meso- and metanotum, mesopleuron and propodeum completely black; only T2 , T3 and S2 (often S1 too) with yellow band; T1 with lateral spot (Figs 1–3) .................................................................................. 1. L. bicinctus (Rossi)

– T1 distinctly elongate, ratio L/ W 1.6 –1.8×. Mesonotum and mesopleuron with large scattered punctures, with micropunctation. Yellow pattern very reach: metanotum, mesopleuron, lateral parts of mesonotum and propodeum with large spots, metasomal terga and sterna with apical band or predominantly yellow ( Figs 7–8 ) ............... 3. L. egregius (Handlirsch)

3. Metanotum and posterior part of scutellum with longitudinal regular rugae. T3 completely black ....................................................................................... 7. L. peregrinus (Yasumatsu)

– Metanotum and scutellum without rugae. T3 with ferruginous coloration or yellow pattern ............................................................................................................................................. 4

4. Apical constriction of T1 very deep, T 1 in lateral view gibbous (Fig. 6). Metasoma without ferruginous coloration ......................................................................................................... 5

– Apical constriction of T1 weak, T 1 in lateral view more or less uniformly convex ( Fig. 15 ). Metasoma with ferruginous coloration ........................................................................ 6

5. Propodeal spiracular groove lacking. Punctation on S2 dense and clear. T1 and T2 with lateral spot, T3 with apical band (Figs 4–6) ................................ 2. L. bilunulatus A. Costa

– Propodeal spiracular groove at upper is distinct. Punctation on S2 sparse and not clear. T1 completely black, T2 and T3 with band ( Fig. 18 ) ................... 6. L. pacificus Gussakovskij

6. Propodeal spiracular groove at upper is distinct. Mesosoma and metasoma without yellow pattern ( Figs 16–17 ) ............................................... 5. L. oreophilus (Kuznetzov-Ugamskij)

– Propodeal spiracular groove lacking. Mesosoma and metasoma with yellow pattern ....... 7

7. Propodeum (except metapostnotum and posterolateral small area) smooth and shiny, with sparse irregular punctation ( Fig. 14 ). Yellow are: ventral spot on scape ( Fig. 10 ), very reduced maculation on pronotal collar, transverse spot on posterior part of scutellum ( Fig. 14 ), large lateral spots on T2, small lateral spots on S2 and S3, transverse apical band on T3. T1 ferruginous (except base) .......... 4. L. nemkovi Mokrousov et Proshchalykin , sp. n.

– Propodeum (except small area ventrally in anterolateral part) with distinct longitudinal or oblique rugae. Head and metasoma with reach yellow pattern, all terga and S2 with transverse yellow band, S3 with large posterolateral spot. Base of T1 and T2 ferruginous ( Fig. 19 ) ................................................................................................ 8. L. pictus Nemkov

Figs 1–6. Lestiphorus bicinctus (Rossi) (1–3) and L. bilunulatus A. Costa (4–6). 1, 3, 4, 6

– females; 2, 5 – males; 1, 2, 4, 5 – habitus, dorsolateral view (1, 4); lateral view (2, 5); 3, 6 –

T1, dorsolateral view (1–2 – from Bulgaria; 3 – from Russia, Nizhni Novgorod Reg.; 4–6 –

from Russia, Primorsky Terr.). Scale bars: 2.0 mm.

Figures

Figs 7–8. Lestiphorus egregius (Handlirsch), habitus. 7 – female, dorsolateral view; 8 –

Figs 9–15. Lestiphorus nemkovi sp. n., holotype, female. 9 – habitus, dorsolateral view

Figs 16–19. Lestiphorus oreophilus (Kuznetzov-Ugamskij) (16, 17), L. pacificus Guss.