Sciara protoberidis Cockerell, 1915

Dale E. Greenwalt, Daniel J. Bickel, Peter H. Kerr, Gregory R. Curler, Brian V. Brown, Herman de Jong, Scott J. Fitzgerald, Torsten Dikow, Michal Tkoč, Christian Kehlmaier & Dalton De Souza Amorim, 2019, Diptera of the middle Eocene Kishenehn Formation. I. Documenting of diversity at the family level, Paleontologia Electronica 22 (2), No. 50, pp. 1-56 : 24

Sciara protoberidis Cockerell, 1915 , reassigned Figure 20

Material examined. Holotype, USNM 61437 , housed in the National Museum of Natural History , Washington, D.C., USA.

Type horizon. Bembridge Marls , UK, Latest Eocene

Type locality. Gurnard Bay , Isle of Wight, UK

Remarks

Sciara protoberidis is an insect body of 1.83 mm in length through tergite 5, 2.23 mm to the end of what may be the terminalia. Head not elongate. Wing length, 1.87 mm (left) and 1.71 mm (right), width 0.63 mm. No macrotrichia visible on any of the veins. Right wing R 1 and R 4+5 1.16 mm and 1.5 mm in length, respectively (7:9). Fork of M 0.73 mm in length, maximum width twice that at the wing’s margin, as figured by Cockerell; stem of M not preserved, at most as long as fork, probably shorter. There are no morphological characters present that distinguish this specimen from the many genera of the family or the families within Sciaroidea. We assign S. protoberidis to Sciaroidea incertae sedis.

Figures

FIGURE 20. Sciara protoberidis Cockerell 1915, USNM 61437; Habitus. Distal portions of M1 and M2 labeled. Scale bars equal 1.0 mm.