Fusiogramma, Boderau & Roques & Nel, 2024

Genus Fusiogramma nov.

Zoobank LSID: urn:lsid:zoobank.org:act:76FD194F-214E-4A72-BF8A-7487700E0E53

Type species: Fusiogramma minuta sp. nov., by monotypy; see below.

Etymology: In reference to the basal fusion of vein MA with RP and the suffix gramma, identical, employed for the Caloneurodea . Gender feminine.

Diagnosis.—As for the type species, by monotypy.

Remarks.— Fusiogramma gen. nov. is attributed to Caloneurodea due to the presence of the following diagnostic characters ( Béthoux et al. 2004): fusion of CuPaα with MP + CuA as a short anterior branch CuPaα between MP + CuA and CuPa, the latter character is typical of the Panorthoptera; a vein MP + CuA +CuPaα with at most a short terminal twig; convex vein MP + CuA +CuPaα and concave vein CuPaβ running close, parallel and straight; MP running fused with CuA +CuPaα; anal area considerably reduced. Due to the weakness of the current familial classification within the Caloneurodea , we can only compare Fusiogramma gen. nov. with the various genera currently attributed to this order ( Béthoux et al. 2004).

Fusiogramma gen. nov. differs from Aviogramma Prokop et al., 2014a , from the same coal slag heap of Avion in its much smaller size (7. 9 mm long vs. 32.0 mm), main stem of RP anteriorly curved vs. nearly straight, and MA basally fused with the stem of RP ( Prokop et al. 2014a). The length of its wing is comparable to that of Oudardgramma Nel & Roques, 2021a, from the lower Langsettian (Moscovian) of Bruay-en-Artois (also from the Pas-de-Calais), but it differs from MA basally fused with RP vs. only touching it, and the long stem of RP ( Nel and Roques 2021a). All the other Caloneurodea View in CoL strongly differ from Fusiogramma gen. nov. in the MA not fused with RP and running separately to wing margin ( Béthoux et al. 2004; Loureiro et al. 2010; Garrouste et al. 2018; Huang et al. 2020; Dvořák et al. 2021; Nel and Roques 2021b; Santos et al. 2024). The partial fusion of MA with RP is not sufficient at this stage of knowledge to define a new family because such fusions are frequent in Archaeorthoptera ( Sharov 1968; Béthoux and Nel 2002).

Stratigraphic and geographic range.—Moscovian, Northern France.