Palaeopetia terminus, Grimaldi, 2018

Grimaldi, David A., 2018, Basal Cyclorrhapha In Amber From The Cretaceous And Tertiary (Insecta: Diptera), And Their Relationships: Brachycera In Cretaceous Amber Part Ix David A. Grimaldi, Bulletin of the American Museum of Natural History 2018 (423), pp. 1-97 : 1-97

publication ID

https://doi.org/ 10.1206/0003-0090-423.1.1

DOI

https://doi.org/10.5281/zenodo.4631161

persistent identifier

https://treatment.plazi.org/id/03B187A8-FFC6-FFBF-FD5F-3DEC7EB9F93E

treatment provided by

Felipe

scientific name

Palaeopetia terminus
status

sp. nov.

Palaeopetia terminus , new species

Figures 12 View FIG ; 38C, D, F, G, I View FIG ; 40A View FIG

DIAGNOSIS: Distinguished from P. dorsalis , n. sp., as given in the diagnosis above.

DESCRIPTION: Very similar to P. dorsalis with the exception of the following features: Head: Antenna with arista terminal, not dorsal-preapical. Male eyes large, holoptic for length of approximately 8 facets; ocellar triangle and small portion of frons exposed; no differentiation of facets; ocelli on low tubercle, close together. Thorax: Posteriormost notopleural seta very long and robust, ca. 2× the length and width of other notopleurals; 2 (vs. 1) postalar setae (anterior one finer). Transverse suture well developed. Anteriormost scutellar seta very small, length less than 0.3× that of adjacent scutellar seta (vs. approximately equal in size). Legs: Hind tibia with dorsal row of 6 stout, slightly curved setae, alternating with smaller stout setae. Wing: As drawn: longer, L/ W 1.89 (vs. 1.77), from tip to level of crossvein h. M 1 slightly more arched; microtrichia confined to wing margin. Terminalia: Epandrium glabrous, brown, apparently heavily sclerotized; laterally flattened (clamlike), with fine setae on inner edge; surstylus pendulous, setulose, curved and clavate, apparently articulating with ventrolateral portion of epandrium (not fused). Aedeagus and paraphallic structures not observable.

SPECIMENS EXAMINED: Holotype, male, AMNH Bu-SE2/6, in Burmese amber. In excellent condition.

ETYMOLOGY: In reference to the position of the arista on the basal flagellomere.

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Ironomyiidae

Genus

Palaeopetia

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