Pseudoscolia ferruginea Radoszkowski, 1880

Mokrousov, Mikhail V., Proshchalykin, Maxim Yu. & Maharramov, Mahir M., 2025, Taxonomic notes on two species of Pseudoscolia (Hymenoptera, Crabronidae, Philanthinae) described by O. Radoszkowski, Zootaxa 5715 (1), pp. 291-299 : 295-297

Pseudoscolia ferruginea Radoszkowski, 1880

( Figs 4–9 , 18–23 )

Pseudoscolia maculata Radoszkowski, 1876: 103 , ♂ (part.).

Pseudoscolia ferruginea Radoszkowski, 1880: 154 , ♀. Holotype: ♀, Armenia: Echmiadzin. MfN URL http.//coll.mfn-berlin. de/u/6a49bc [MNHU, photos examined].

Material examined. Armenia, Echmiadzin , 1 ♀ [photos of holotype, MNHU] ; Azerbaijan, Nakhchivan AR, Babek, Sirab , 39°18’N 45°31’E, 1090 m, 1. VI .2020, 1 ♂, M. Maharramov [ MMC] .

Diagnosis. Closely related to Pseudoscolia angelae ( Kohl, 1891) , P. theryi ( Vachal, 1893) and P. splendida Giner Marí, 1945 . It differs from P. theryi by: yellow triangular spots at bottom of inner eye margins well developed (absent in P. theryi ); male mandible without row of setae (in P. theryi external surface of basal part with row of setae), male forebasitarsus L/H ratio (lateral view) near 2× (about 3× in P. theryi ). The female differs from these three species by a long ocello-ocular distance (distinctly longer then hind ocellus diameter in P. ferruginea , and not longer in P. angelae , P. theryi and P. splendida ). The male differs from P. angelae and P. splendida by the forebasitarsus L/H ratio (lateral view) near 2× (less than 2× in P. angelae and P. splendida ) as well as antenna shape—F 8–10 slightly pointed apicoventrally, F 11 slightly longer than wide (F 8–10 pectinate, F 11 L/W ratio near 2× in P. angelae , F 8–10 rounded and F 11 L/W ratio near 1.2× in P. splendida ).

Description. Male. Body length 11.0 mm. Black, with the following yellow: mandible (except apex), apical upper margin of scape, posterior surface of F 5–9, clypeus (except free margin), elongate lateral macula at face bottom, lateral large macula on pronotum, tegula, transverse fascia of metanotum, transverse fasciae of T 1–4 (with lateral excision), lateral spot on S 2–4. Pronotal lobe ventrally, apical part of all terga and sterna ferruginous. Femora ferruginous anteriorly, darkened posteriorly, with yellow apex; forefemur with large yellow spot apicoventrally. Tibiae and tarsi predominantly ferruginous, fore- and midtibiae yellowish anteriorly. Wing veins yellow basally.

Head in frontal view slightly transverse, H/W ratio = 0.83× ( Fig. 22 ), inner eye margins distinctly divergent downwards, minimum distance between eye and hind ocellus nearly equal to hind ocellus diameter, POL/OOL ratio = 2.15× ( Fig. 21 ). Median clypeal lobe with four acute teeth. Mandible unidentate, stout, sharply curved at middle, almost straight apically, without row of setae, only with small external area at middle with few long setae. Antenna distinctly flattened towards apex, flagellomeres widened; F 8–10 slightly pointed apicoventrally ( Figs 6–9 ). Head densely punctate, on clypeus, vertex and gena more sparsely. Setae silver, at frons slightly yellowish, not hiding sculpture, long setae on frons and gena about 1.5× midocellus diameter.

Pronotal collar with thin median furrow, near anterolateral angle with small, but distinct transverse tubercle. Lateral surface of pronotum microridged, pronotal collar with few punctures.

Mesonotum with clear parapsidal line; punctures different sizes, punctation dense anteriorly and posteriorly, central lateral parts shiny, with large impunctate interspaces. Mesonotal setae ill developed. Mesopleuron densely punctate, with setae about midocellus diameter long. Mesopostnotum shiny, with sparse punctures.

Metapostnotum well separated, asetose, at central part and base longitudinally rugose, laterally with delicate longitudinal wrinkles.

Lateral and posterior surfaces of propodeum densely punctate, with setae about as long as 1.5× midocellus diameter.

Foretarsus not flattened, basitarsomerus with deep ventral incision at base, tarsomerus IV shortened, tarsal rake greatly reduced ( Figs 4–5 ). Tibial spines and setae whitish.

Wings venation typical for the genus.

Metasoma without constrictions between segments, terga with fairly dense micropunctation, punctation sparser towards apical segments. Pygidial plate broadly rounded apically, with slightly widened and raised sides; with distinct punctures and microsculpture, matt. Long setae present on T 1, base of T 2, lateral parts of T 6 and sterna. Setae noticeably denser on T 6 laterally and S 6 apically.

Female. In coloration similar to male, but legs and metasoma predominantly ferruginous ( Fig. 18 ); yellow marks at inner eyes margins wider. Ocello-ocular distance distinctly longer then hind ocellus diameter.

Distribution. Armenia, Azerbaijan (new record).

Figures

FIGURES 4–9. Pseudoscolia maculata Radoszkowski, 1876, ♂, syntype, figures from Radoszkowski 1876: Tab. II (4, 6) and Pseudoscolia ferruginea Radoszkowski, 1880, ♂ (5, 7, 8, 9); 4, 5—foretarsus, anterolaterodorsal view; 6–9—antenna, combined illustration (6), lateral view of apical flagellomeres (7), anterior (8) and posterior (9) views.

FIGURES 18–19. Pseudoscolia ferruginea Radoszkowski, 1880, holotype, ♀; 18—habitus, dorsolateral view; 19—labels. (Photos by S. Krause).

FIGURES 20–23. Pseudoscolia ferruginea Radoszkowski, 1880, ♂; 20—habitus, dorsolateral view; 21—head, pro- and mesonotum, dorsal view; 22—head, frontal view; 23—metanotum and metapostnotum, dorsal view.