Systematic position of
Pseudomalus triangulifer
(Abeille, 1877)
Subfamily & Tribe
Chrysidinae (Elampini)
Size (mm):
4.5-7.0
Genus & species
Pseudomalus triangulifer (Abeille, 1877)
Species group
Original combination
Omalus triangulifer Abeille, 1877
Type series
Lectotypus ♀ des. by Kimsey (1986)
Original description
Long. 6 millim. - Viridi-cyaneus, abdominis dorso aurato, emarginatura triangulari, ultimi segmenti lateribus unisinuatis. Capite confertim et mediocriter punctato; prothoracis et mesothoracis punctis laevibus ac diffusis; scutelli et postscutelli validis et confertis. Postscustello sub hemisphœrico-truncato. - Sainte-Baume, sur les hêtres, très-rare. Diffère de tous les autres Omalus par l'incision triangulaire de l'abdomen; s'éloigne en outre de l'auratus par sa ponctuation plus serrée et les côtés du 3e segment ventral unisinués; du punctulatus, par l'impression faciale remontant plus prés des ocelles; de l'œneus, par ses pro et mesonotum ponctués; des pusillus et minutus, par son abdomen d'un doré cuivreux non douteux; du cœruleus, par sa couleur et sa forme plus élancée; du Wesmaëli, par son corps plus court et son postécusson non conique.
Synonyms and subspecies
Systematic notes
Geographic distribution of
Pseudomalus triangulifer
(Abeille, 1877)
World distribution
Type locality
France (St. Baume)
Kimsey & Bohart
Palaearctic: Europe (France), Turkey
Linsenmaier
Europe, Daghestan, Anatolia
Other Authors
The Netherlands (Veenendaal, 2011)
Chorology
European
Distribution notes
Geographic distribution of
Pseudomalus triangulifer
(Abeille, 1877)
Italian distribution according to the Checklist of the species of the Italian Fauna
Macroregion
North (N):
South (S):
Sicily (Si):
Sardinia (Sa):
Endemic
Italian distribution by Administrative Region (Personal evidences, Literature records and other sources)
Invrea, 1921 (as Ellampus auratus triangulifer; on Inula viscosa Ait. and Lavatera arborea L. infested by aphids, on leaves of Ceratonia siliqua L., on flowers of Euphorbia cyparissias L. and of Rubus);
Biology of
Pseudomalus triangulifer
(Abeille, 1877)
Known Hosts
Polyphagous
Tenthredinidae
Vespidae
Eumenidae
Masaridae
Sphecidae
Rhopalum tibiale, Ectemnius planifrons (Berland & Bernard, 1938), Pemphredon lugubris (Valkeila, 1971), Pemphredon lethifer, P. rugifer in galls of Andricus kollari (Har.) (Strumia, 1996); from artificial nests of Pemphredon lugens and of Passaloecus insignus provisioned with Homoptera Lachnidae (Veenendaal, 2011)
Apidae
Colletidae
Halictidae
Megachilidae
Anthophoridae
Lepidoptera
Notes on Hosts
Known Habitat
Habitat
Plants for rest/refuge
Inula viscosa Ait. and Lavatera arborea L. infested by aphids, leaves of Ceratonia siliqua L., flowers of Euphorbia cyparissias L., Rubus (Invrea, 1922), flowers of Euphorbia (Schmidt, 1977)
Parasites
Biological notes
Because Pseudomalus females have never been observed at the nest entrances of their hosts, the suggestion is that Pseudomalus species place their eggs on the body of aphids before they are collected by Pemphredoninae (Veenendaal, 2011)
More info on
Pseudomalus triangulifer
(Abeille, 1877)
Systematic position of
Pseudomalus triangulifer
(Abeille, 1877)
Subfamily & Tribe
Chrysidinae (Elampini)
Size (mm):
4.5-7.0
Genus & species
Pseudomalus triangulifer (Abeille, 1877)
Species group
Original combination
Omalus triangulifer Abeille, 1877
Type series
Lectotypus ♀ des. by Kimsey (1986)
Original description
Long. 6 millim. - Viridi-cyaneus, abdominis dorso aurato, emarginatura triangulari, ultimi segmenti lateribus unisinuatis. Capite confertim et mediocriter punctato; prothoracis et mesothoracis punctis laevibus ac diffusis; scutelli et postscutelli validis et confertis. Postscustello sub hemisphœrico-truncato. - Sainte-Baume, sur les hêtres, très-rare. Diffère de tous les autres Omalus par l'incision triangulaire de l'abdomen; s'éloigne en outre de l'auratus par sa ponctuation plus serrée et les côtés du 3e segment ventral unisinués; du punctulatus, par l'impression faciale remontant plus prés des ocelles; de l'œneus, par ses pro et mesonotum ponctués; des pusillus et minutus, par son abdomen d'un doré cuivreux non douteux; du cœruleus, par sa couleur et sa forme plus élancée; du Wesmaëli, par son corps plus court et son postécusson non conique.
Synonyms and subspecies
Systematic notes
Geographic distribution of
Pseudomalus triangulifer
(Abeille, 1877)
World distribution
Type locality
France (St. Baume)
Kimsey & Bohart
Palaearctic: Europe (France), Turkey
Linsenmaier
Europe, Daghestan, Anatolia
Other Authors
The Netherlands (Veenendaal, 2011)
Chorology
European
Distribution notes
Geographic distribution of
Pseudomalus triangulifer
(Abeille, 1877)
Italian distribution according to the Checklist of the species of the Italian Fauna
Macroregion
North (N):
South (S):
Sicily (Si):
Sardinia (Sa):
Endemic
Italian distribution by Administrative Region (Literature records)
Adm. Region
Literature records
Piemonte|Piedmont
Strumia, 2005;
Valle d Aosta|Aosta V.
Rosa, 2002c, 2005a, 2006a;
Lombardia|Lombardy
Rosa, 2002a, 2002b;
Trentino Alto Adige
Rosa, 2005a;
Veneto
Friuli V.G.
Liguria
Invrea, 1921 (as Ellampus auratus triangulifer; on Inula viscosa Ait. and Lavatera arborea L. infested by aphids, on leaves of Ceratonia siliqua L., on flowers of Euphorbia cyparissias L. and of Rubus);
Italian distribution by Administrative Region (Personal evidences)
Adm. Region
Personal records
Piemonte|Piedmont
Valle d Aosta|Aosta V.
Lombardia|Lombardy
Trentino Alto Adige
Veneto
Friuli V.G.
Liguria
Emilia Romagna
Toscana|Tuscany
Umbria
Marche
Lazio
Abruzzo
Molise
Campania
Puglia|Apulia
Basilicata
Calabria
Sicilia|Sicily
Sardegna|Sardinia
Distribution notes
Biology of
Pseudomalus triangulifer
(Abeille, 1877)
Known Hosts
Polyphagous
Tenthredinidae
Vespidae
Eumenidae
Masaridae
Sphecidae
Rhopalum tibiale, Ectemnius planifrons (Berland & Bernard, 1938), Pemphredon lugubris (Valkeila, 1971), Pemphredon lethifer, P. rugifer in galls of Andricus kollari (Har.) (Strumia, 1996); from artificial nests of Pemphredon lugens and of Passaloecus insignus provisioned with Homoptera Lachnidae (Veenendaal, 2011)
Apidae
Colletidae
Halictidae
Megachilidae
Anthophoridae
Lepidoptera
Notes on Hosts
Known Habitat
Habitat
Plants for rest/refuge
Inula viscosa Ait. and Lavatera arborea L. infested by aphids, leaves of Ceratonia siliqua L., flowers of Euphorbia cyparissias L., Rubus (Invrea, 1922), flowers of Euphorbia (Schmidt, 1977)
Parasites
Biological notes
Because Pseudomalus females have never been observed at the nest entrances of their hosts, the suggestion is that Pseudomalus species place their eggs on the body of aphids before they are collected by Pemphredoninae (Veenendaal, 2011)
More info on
Pseudomalus triangulifer
(Abeille, 1877)
Agnoli G.L. & Rosa P. (2023) Pseudomalus triangulifer (Abeille, 1877), in: Chrysis.net website. Interim version 28 May 2023, URL: https://www.chrysis.net/database-of-the-italian-chrysididae/species/?rif=Pseudomalus_triangulifer.