Valid Names Results
Criniverticillus Lin, Yao & Ren, 2018 (
Weitschatidae)
Nomenclatural History
- Criniverticillus
Lin, Yao & Ren
2018: 428.
Type species: Criniverticillus longicumulus Lin, Yao & Ren
by original designation
.
accepted valid name
Remarks
- Systematics: http://zoobank.org/urn:lsid:zoobank.org:act:A5025B96-B712-418B-958C-FB3A91475B51
Criniverticillus is assigned to the family Weitschatidae based on the presence of the following
features (contrasting conditions in the other fossil taxa/families are given in brackets): antennae without capitate setae (capitate setae present in Arnoldus (Arnoldidae)); radial sector of forewing absent (present in Xylococcus (Xylococcidae)); tarsal digitules undifferentiated (clavate in Arnoldus and Xiphos); membranous lateral areas of scutellum absent (present in Grohnus (Grohnidae) and Xiphos) and cubital ridge extending beyond middle of wing (cubital ridge very short, reaching posterior wing margin at 1/4 its length in Serafinus (Serafinidae)). In particular, the shape of the pterostigma in Criniverticillus is very similar to that of Weitschatus and Pseudoweitschatus (Weitschatidae) (absent in other Xylococcid-like taxa).
Criniverticillus differs from the other two genera in Weitschatidae by the following combination of characters (contrasting conditions in the other taxa are given in brackets): antenna significantly longer, 2.10–2.40 mm in Criniverticillus (1.30–1.33 mm in Pseudoweitschatus); most setae on antenna forming distinct whorls (without whorls in Weitschatus); antennal apical segment with the short ‘curved bristles’ of Vea & Grimaldi (2015) (absent in Weitschatus); hamulohaltere leaf-shaped (bilobed in Weitschatus); first three abdominal tergites with distinct
median ridge (median ridge absent in Weitschatus and Pseudoweitschatus); a single row of tubular ducts present on each of abdominal tergites VI and VII (2–4 rows of pores in Weitschatus), and the presence of a pair of short tubercular projections on the apex of abdominal segment VIII (absent in Pseudoweitschatus).
- Structure: Body large; antenna long (ca. 2.1–2.4 mm most antennal setae forming distinct whorls, antennal apical segment with curved bristles (Fig. 2G); hamulohaltere leaf-shaped; basisternum without a median ridge ; abdominal tergites well developed and sclerotized, first three tergites each with distinct median ridge; abdominal tergites VI and VII each with a transverse row of 7–9 tubular ducts extruding wax filaments; a pair of short tubercular projections present on apex of abdominal segment VIII.(Lin, Yao Ren, 2018)
- General Remarks: Detailed description, photographs and illustration in Lin, Yao & Ren, 2018.
Keys
Associated References
1 Species
