Hedychridium tyrrhenicum Strumia, 2003


Database of the Italian Chrysididae

Hedychridium tyrrhenicum Strumia, 2003

Chorology: Italian-continental
Chorology: Italian-continental
Italian distribution of Hedychridium tyrrhenicum
Italian distribution

Posizione sistematica di Hedychridium tyrrhenicum Strumia, 2003

Sottofamiglia & Tribù Chrysidinae (Elampini) Size (mm)
Dimensioni (mm):
Genere & specie Hedychridium tyrrhenicum Strumia, 2003
Gruppo di specie monochroum
Combinazione originale Hedychridium tyrrhenicum Strumia, 2003
Serie tipica  
Descrizione originale Color: pronotum bronze-red without black dot or central and transverse stripe (over 95% of individuals), head vertex, mesonotum and scutellum bronze-red to pink-red, central part of mesonotum often partially black, facial cavity green or golden green, rarely bronze-red, metanotum green-gold to bronze-red; mesopleuron from bronze-red to green-gold; femora and tibiae from bronze-red to bronze-green, tarsi brown. T-I color ranges from bronze-red to golden-green without trace of black stripe or dots near the posterior margin. T-II of the same color as T-I but with a large central black dot starting from the anterior margin but not reaching the posterior one. T-III variable in color from bronze-red to green with red or gold shining, sternum mostly metallic bronze to bronze-green (Fig. 1, 2). Antennae normal, not expanded; scape metallic bronze; pedicel and flagellum black; F-I 1/w = 3.0; length ratio F-I/P = 1.4; length ratio F-I/F-II = 1.5 to 1.7; flagellomere from F-IV on 1/w > 1.
Face oval in shape in frontal view, facial W/H = 1.45; punctures on frons and vertex reticulate PD = 0.4 MOD, TFC absent. Scapal basin with coarse punctures laterally (PD = 0.4 MOD), and a few coarse and transverse striae in the middle, Clypeus short, 0.9 MOD; malar space short (1.0 MOD) and strongly converging. Mandible dark, brown at center, with two additional teeth. IOA smaller than 90° (for 54 Corso-Sardinian individuals the average is IOA = 84.6°, SD = 1.7°, for the 11 Maltese islands specimens IOA = 85.7°, SD = 1.1°; for the 18 Sicilian specimens IOA = 87.3°, SD = 2.3°). IOD smaller than OOD, and vertex with the occipital angles rounded.
Pronotum slightly converging on anterior border; punctures on pronotum, mesonotum and scutellum reticulate to close (PD = 0.4 MOD), uniform; notauli parallel. Metanotum punctures reticulate, uniform PD = 0.5 MOD, metanotum as long as scutellum; mesopleuron rounded ventrally, with punctures simple, close to reticulate, uniform, PD = 0.3-0.4 MOD. Lateral propodeal angle acute and pointing outward. Pronotum to scutellum length ratio 1.1; head to pronotum width ratio 1.2; anterior femora simple, without ventral longitudinal carina.
Wings light brown, veins brown; tegulae metallic bronze; median vein M nearly straight; Rs =1.2 times stigma length; Cu not sclerotized; posterior wings with 5-6 hamuli. Abdomen markedly convex, short, 1/w = 1.05, without longitudinal or transverse carinae, punctures simple, uniform, close to reticulate, PD = 0.2-0.3 MOD, posterior margin of T-III round, smooth and canaliculated. The punctures on S-II are numerous, sparse and deep, PD = 0.2 MOD. Pubescence on all body white and short, less than 1 MOD in length. Sexual dimorphism absent, only the male posterior margin of T-III more round and S-IV less visible.
The male genital capsule is similar to that of monochroum, but the males from the Corso-Sardinian region have a different paramere internal margin as shown in Figure 3. The individuals from this region (including Asinara, Capraia, and Montecristo) appear to be a uniform group with facial cavity, mesopleuron and metanotum prevalently golden green to green.
Individuals from the Maltese islands are more or less entirely red-bronze in color, including the central part of mesonotum, that is, on the contrary, stained more or less black in the Corso-Sardinian individuals. Such differences are possible evidence of two distinct subspecies. The individuals from Sicily are unfortunately known only from a single locality near Selinunte and show a color range from pink-red, close to those from the Maltese islands, to more greenish where only the scutellum is bronze-red in color, the remainder being a mixture of bronze and green. In the same locality, the only known to me from Sicily, also 8 specimens of H. monochroum were found. Two additional individuals showed mixed characters and the presence of hybrids cannot be ruled out.
Sinonimi e sottospecie  
Note sistematiche  

Distribuzione geografica di Hedychridium tyrrhenicum Strumia, 2003

Distribuzione mondiale

Località tipica Italy and Malta.
Localities: 1) from Maltese islands, 11 specimens: 1 f St. Marija Bay, Comi-no, 13-VII-1976; 2 f St. Thomas Bay, Malta, 26-VII-1977; 1 m and 2 f Wied Mistra, 13-VIII-1997, Malta; 1 m Ghasti Wied Lunzjata, 20-VIII-1996, Malta; 4 f Marsalforn, 27/28-IX-1980, Gozo; 2) from Sardinia, 21 specimens: 5 f Elmas (Cagliari), 01/02- IX-1993; 2 m Quartu St. Elena (Cagliari), 01-IX-1993; 2m 1 f Geremeas (Cagliari), 01-IX-1993; 1 f Stintino (Sassari), 08-IX-1993; 1 f Berchidda, 490 m. a.s.l., (Sassari), summer 2000 and 16 f 04-VI/30-VIII-2002, Malaise trap (40° 47.49' N 9° 08.87' E); 1 f Luras, 450 m. a.s.l., (Sassari), Malaise trap (40°56.84' N 9°09.65' E), 17/31-VIII-2000; 3) from Asinara: 1 m 5 f, VIII-1903, legit S. Folchini; 2 m and 11 f Fornelli Malaise trap (40°59.48' N 8°l4.73' E) 11-VI/09-X-2002; 4) from Corsica, 29 specimens: 2 m 6 f, Moltifao near the bridge on the Asco river, Pan trap, 08/10-VII-1998; 1 m La Marana, Casone, Pan trap, 01/04-VII-1997; 1m Piana, River Tartagine, 09-VI-1997; Castirla, River Golo, Malaise trap (42°22.91' N 9°09.08' E), 1 m and 7 f 11-VI/16-VIII-1999; 5 f 24-VI/24-VII-2000, 2 f 05-VI/01-VIII-2002, 5 f Cuttoli, Malaise trap (41°57.85' N 8°50.83' E), 15-VII/15-VIII-2001; 5) from Montecristo, Malaise trap: 2 f 25-VII/25-VIII-1999, 1 f 30-VI/15-VII-2000, 1 f 1/15-VII-2001; 6) from Capraia, Malaise trap, 25 specimens: 1 f 30-VI/31-VII-2000; 1 f 03/15-VII-1999 (I Pollai: 43°02.17' N 9°50.02' E), 1 m and 8 f 06/22-VI-2002, 8 f 22-VI/08-VII-2002, 6 f 08/23-VII-2002 (San Rocco: 43°02.63' N 9°50.54r E); 7) from Sicily 18 specimens: 1 f Selinunte (Trapani), 12-VI-1983; 2 m and 15 f, Foce del Modione, Selinunte (Trapani), 10-VIII-1985; 8) from Ustica: 2 f, 17 and 18-VII-1984.
Kimsey & Bohart  
Altri Autori  
Corologia Italian-continental
Note sulla distribuzione  

Distribuzione geografica di Hedychridium tyrrhenicum Strumia, 2003

Distribuzione italiana secondo la Checklist delle specie della Fauna italiana

Macroregione Nord (N): Sud (S): Sicilia (Si): Sardegna (Sa):

Distribuzione italiana per regione amministrativa (Record bibliografici, evidenze personali e altre fonti)

Regione amministrativa Record bibliografici Record FEI Record personali
Valle d Aosta
Trentino Alto Adige
Friuli V.G.
Emilia Romagna
Toscana Strumia, 2003; Strumia, 2005;
Sicilia Strumia, 2003; Strumia, 2005;
Sardegna Strumia, 2003; Strumia, 2005;
Note di distribuzione known from island and continental Italy.

Biologia di Hedychridium tyrrhenicum Strumia, 2003

Ospiti conosciuti

Note sugli ospiti

Habitat conosciuto

Piante per posa/rifugio  
Parassiti noti  
Note biologiche  

Copyright, Authorship, and Ownership statements

All text and images of this page are copyright ©️ Chrysis.net unless otherwise stated - please see individual cases for authorship and copyright details. The specimens pictured are from the authors' or other collaborators' personal collections and from the collections of various museums. Unless otherwise specified, the whole content of this web site is for personal, non-commercial, scientific, and educational purposes given proper accreditation to the page from which they were derived are provided, and under Chrysis.net Terms and Conditions.

For citation purposes

Agnoli G.L. & Rosa P. (2020) Hedychridium tyrrhenicum Strumia, 2003, in: Chrysis.net website. Interim version 29 September 2020, URL: https://www.chrysis.net/it/database-dei-chrysididae-italiani/specie/?rif=Hedychridium_tyrrhenicum.