Chrysis leptomandibularis Niehuis, 2000

Paukkunen, Juho, Berg, Alexander, Soon, Villu, Odegaard, Frode & Rosa, Paolo, 2015, An illustrated key to the cuckoo wasps (Hymenoptera, Chrysididae) of the Nordic and Baltic countries, with description of a new species, ZooKeys 548, pp. 1-116 : 69-70

Taxon classification Animalia Hymenoptera Chrysididae

Chrysis leptomandibularis Niehuis, 2000 Figs 118, 127, 142, 145

Chrysis leptomandibularis Niehuis, 2000: 192.

Diagnosis.

Length 5-8 mm. The size and shape of the body are similarly slender and elongate as in Chrysis angustula . However, the flagellomeres are shorter, S2 is greenish (not reddish) with shorter black spots (Figs 118, 127) and the mesoscutum has wider, strongly shining interstices between the punctures in the female. The mandible is extremely thin in the female (medial width less than one third of its basal width) (Fig. 142) and somewhat thicker in the male (medial width about one third of its basal width) (Fig. 145). Compared to Chrysis schencki , the mandible is thinner, the punctation of the mesoscutum is sparser and the body is more slender.

Distribution.

Estonia, Finland, Latvia, Lithuania, Norway. Rare. Only one old record is known from Finland. New to Norway (1 ♀, Østfold, Aremark, Teigen, 59.254°N, 11.644°E, 9.VIII.2015, leg. F. Ødegaard). - West Palearctic: central and northern Europe ( Niehuis 2000).

Biology.

Habitat: forest margins, clearings and gardens with sun-exposed dead wood. Adults have occasionally been found on flowers of Apiaceae and Rosaceae ( Rosa 2006, our own obs.). Flight period: June to August. Host: probably Symmorphus debilitatus (Saussure) ( Vespidae ) ( Niehuis 2000, Pärn et al. 2014).