In:
ZooKeys, Pensoft Publishers, Vol. 893 ( 2019-12-02), p. 115-123
Abstract:
A new sawfly of Megalodontesidae, Jibaissodes peichenae sp. nov. , is described from the Lower Cretaceous Yixian Formation of Northeastern China. It is established mainly based on the pectinate antenna comprising 42 flagellomeres and the proximal 28 bearing apical rami, which gradually shorten in length toward the apex of the flagellum. The pterostigma of the forewing is infuscated apically and on the hind wing, vein 1-Rs is nearly equal to 1r-m and slightly shorter than 1-M. The first tergum is widely excised posteriorly and roundly protruding laterally alike in Megalodontes . This find supports that pectinate antennae in extant sawflies of Megalodontesidae originated at least during or before the Early Cretaceous.
Type of Medium:
Online Resource
ISSN:
1313-2970
,
1313-2989
DOI:
10.3897/zookeys.893.38512
DOI:
10.3897/zookeys.893.38512.figure1
DOI:
10.3897/zookeys.893.38512.figure2
DOI:
10.3897/zookeys.893.38512.figure3
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2019
detail.hit.zdb_id:
2445640-8
SSG:
12
