Parisognoriste, Blagoderov, Vladimir, Hippa, Heikki & Nel, Andre, 2010

Blagoderov, Vladimir, Hippa, Heikki & Nel, Andre, 2010, Parisognoriste, a new genus of Lygistorrhinidae (Diptera: Sciaroidea) from the Oise amber with redescription of Palaeognoriste Meunier, ZooKeys 50, pp. 79-90 : 81

Parisognoriste gen. n.

Type species.

Parisognoriste eocenica , sp. n.

Diagnostic description.

Small lygistorrhinid flies. Proboscis small, about 1/3 of the height of head, palpus four-segmented, much longer than proboscis. Ocelli three, median ocellus smaller than the lateral ocelli. Scutum moderately convex, laterotergite bare. Vestiture of tibiae in rows on apical part. Outer tibial spurs 2 and 3 shorter than inner. Hind leg much longer that fore and mid leg, but its tibia and tarsus only slightly expanded. Wing membrane without macrotrichia. Sc joining C. R1 short, approximately half of wing length. Rs distinct. Crossvein m-cu present, aligned with r-m. M1 and M2 fork base and M stem weak or reduced. M3+4 and CuA without a common stem. R1 setose, Sc, R5, M, and CuA bare.

Etymology.

The genus name is compound word formed from parisos (Greek πάρ ǐσος, almost equal, just alike) and the genus name Gnoriste . The name is feminine.

Discussion.

Parisognoriste resembles Archaeognoriste from the Upper Cretaceous Burmese amber, but the latter has palpi longer than head height, frons membranous, all longitudinal wing veins setose, Sc ending free, R1 longer than half wing length, M stem and base of M1 and M2 fork distinct and the tibial spurs of equal length. Parisognoriste is similar to Palaeognoriste Meunier but the latter has a long proboscis, one-segmented palpus and club-shaped hind tibia (see also under Phylogenetic analysis).