Perilampus laevifrons Dalman, 1822

Mitroiu, Mircea-Dan & Koutsoukos, Evangelos, 2023, Perilampus neglectus and other neglected species: new records of Palaearctic Perilampidae (Hymenoptera, Chalcidoidea), with a key to European species of Perilampus, Journal of Hymenoptera Research 96, pp. 57-99 : 57

Perilampus laevifrons Dalman, 1822

Fig. 8

Perilampus laevifrons Dalman, 1822: 400-401.

Perilampus inaequalis Förster, 1859: 122. Synonymy by Mayr (1905: 569).

Perilampus nigriventris Förster, 1859: 119. Synonymy by Mayr (1905: 569).

Diagnosis.

Head black, dorsally with blue green reflections; mesosoma dorsally green with golden or bronze reflections; female flagellum brown. Body size: 1.75-3.00 mm. Head shape in frontal view (Fig. 8B ) much wider than high. Head in lateral view not unusually long, without distinct sulcus separating posterior eye margin from temple. Clypeal margin (Fig. 8B ) truncate. Supraclypeal area (Fig. 8B ) slightly transverse (less than 1.5 × as wide as high), sides well defined; in male without oval lateral impressions. Malar sulcus versus anterior margin of malar depression shorter. Frontal keels (Fig. 8B ) absent. Face between scrobes and eye (Fig. 8B ) striate (more strongly so in male). Face between clypeus and eye (Fig. 8A, B ) almost smooth. Lateral ocellus small (OOL at least twice the largest ocellar diameter). Funicular segments in female (Fig. 8A ): most segments quadrate to transverse. Male scape (Fig. 8B ) strongly widened distally; ventral pores on more than half scape length. Mesosoma (Fig. 8C ) not narrow (less than 1.4 × as long as wide). Mesoscutum sculpture (Fig. 8C ) without smooth median tubercle; interspaces smaller than punctures, rugose. Scutellum hind margin (Fig. 8C ) without a double carina, with large bilobed protruding projection. Prepectus (Fig. 8D ) wide, dorsal margin longer than pronotal collar; well defined anteriorly (i.e. suture with pronotum very distinct); anterior margin without punctures.

Material examined.

Greece: 1♂, " Attiki, Salamina, Patris hill, 37.970°N, 23.489°E, xi.2020, By hand Leg. Koutsoukos, V." (MICO) . Italy: 1♂, "Italia (Ferrara): Comacchio, Lido d. Naz., 19.8./11.xi.83. Pantaleoni", "ex planidium fixed to Chrysopa viridana and transferred on Anisochrysa flavifrons", "Perilampus laevifrons Dalm., Bouček det. 1983" (NHMUK) . Mongolia: 1♀, " Mongolia: Central aimak, Tosgoni ovoo, 5-10 km N von Ulaan-Baator, 1500-1700 m, Exp. Dr. Z. Kaszab, 1967", "Nr. 926, 19-20.- 23-24.VII.1967 ", Perilampus Perilampus Dalm., Bouček det. 1982" (NHMUK). Romania: 1♀, " Cornereva , Caraș-Severin, 44.98325°N, 22.49011°E, 617 m, 16.07.2015, Popovici & Trufin" (MICO); 1♀, " Tulcea county, Măcin National Parc, meadow, Malaise trap, 23-25.vii.2004, M.-D. Mitroiu leg." (MICO) .

Hosts.

Associated with Tortricidae ( Lepidoptera ); hyperparasitoid of Braconidae and Ichneumonidae ( Hymenoptera ). According to Steffan (1952) a primary parasitoid of Chrysopidae ( Neuroptera ). This seems to be confirmed by the information above, the species being reared from Pseudomallada (= Anisochrysa ) Pseudomallada flavifrons (Brauer) ( Neuroptera : Chrysopidae ) - new biological association.

Distribution.

Belarus, Bulgaria, Czechia, France, Germany, Hungary, Italy, Moldova, Mongolia, Netherlands, North Africa, Russia, Serbia, Slovakia, Sweden, Ukraine, United Kingdom. New species to Greece and Romania.

Comments.

The female of P. laevifrons can be confused to those of P. aquilus , P. masculinus (Fig. 9 ) and P. aureoviridis (Fig. 4 ). It differs from females of P. aquilus in having at least the distal funicular segments quadrate to transverse (Fig. 8A ) and the face at least slightly striate between scobes and eye (face smooth in P. aquilus according to Nikol’skaya (1952)) (Fig. 8A, B ); from females of P. masculinus mainly in having the supraclypeal area less than 1.5 × as wide as high and narrower than the clypeal area (Fig. 8A, B ); for differences between P. laevifrons and P. aureoviridis , see the comments on the latter species.

Figures

Figure 4. Perilampus aureoviridis A female, head in frontal view B male, head in frontal view C female, head and mesosoma, dorsal view D female, prepectus.

Figure 8. Perilampus laevifrons A female, head in frontal view B male, head in frontal view C male, head and mesosoma, dorsal view D male, prepectus.

Figure 9. Perilampus masculinus A female paratype, head in frontal view B male paratype, head in frontal view C female paratype, head and mesosoma, dorsal view D female paratype, prepectus.