Heterophlebia buckmani ( Brodie, 1849 )

JOUAULT, CORENTIN, TISCHLINGER, HELMUT, HENROTAY, MICHEL & NEL, ANDRÉ, 2022, Wing coloration patterns in the Early Jurassic dragonflies as potential indicator of increasing predation pressure from insectivorous reptiles, Palaeoentomology 5 (4), pp. 305-318 : 307

Heterophlebia buckmani ( Brodie, 1849)

Form ‘A’

Material. Specimen HT 88/58, stored at collection Helmut Tischlinger, Stammham, Germany.

Description. A complete forewing, 32.5 mm long, 8.9 mm wide, with venation identical to those of the other specimens attributed to Heterophlebia buckmani (see Nel et al., 1993). Wing membrane hyaline except for a large elongate and distally rounded area in costal half, between discoidal cell and pterostigma.

Locality and horizon. Sulzkirchen/Kerkhofen, Franconian Alb, Southern Germany; ‘Laibstein beds’ of the lower Toarcian (upper Liassic) Posidonienschiefer Formation.

Form ‘B’

Material. Specimen HT 88/57, stored at collection Helmut Tischlinger, Stammham, Germany ; specimen MNHN.FA71358 ( BTDK2 , coll. Michel Henrotay), stored at the Muséum National d’Histoire Naturelle, Paris, France .

Locality and horizon. Sulzkirchen/Kerkhofen, FranconianAlb,Southern Germany;lower Toarcian(upper Liassic); Bascharage, Grand-Duché-du-Luxembourg ‘Laibstein beds’ of the lower Toarcian (upper Liassic) Posidonienschiefer Formation.

Description. Complete forewings, HT 88/57 is 34.5 mm long and 9.1 mm wide; MNHN.F-A71358 is 33.0 mm long and 8.8 mm wide (slightly smaller); venation identical to those of the other specimens attributed to Heterophlebia buckmani . Wing membrane hyaline except for a rounded area in costal half, extending along costal margin in between the zone situated two cells distad nodus and base of pterostigma.