Systematics of Lasiopogon

by Cannings, Rob

• ISBN13: 9780772646361
• ISBN10: 0772646368
• Format: Hardcover
• Copyright: 2002-11-01
• Publisher: The Royal British Columbia Museum

Summary

The genus Lasiopogon is a widespread group of robber flies (Diptera: Asilidae) inhabiting the north temperate parts of the Earth. This study is the first to examine the genus as a complete entity and clearly define intrageneric relationships. It is also the first to pay special attention to the male and female genitalia, important structures in the taxonomy of the genus. There are 118 known species of Lasiopogon, about half of these yet to be described. Dr Cannings gives a cladistic overview of some defined species groups, and provides a detailed taxonomic and phylogenetic analysis of the 7 species groups and 29 species in the opaculus section, comprising about 25 per cent of the genus. He describes 14 new species in this section and redescribes the others.

Author Biography

Robert A. Cannings is Curator of Entomology at the Royal British Columbia Museum in Victoria, Canada.

Table of Contents

Preface	1	(3)
Introduction	3	(1)
General Biology of the Asilidae	3	(1)
Introduction to Lasiopogon	4	(2)
Taxonomic History	6	(4)
Materials and Methods	10	(11)
Sources of Material	10	(4)
Specimen Preparation	14	(1)
Measurements and Drawings	15	(3)
Presentation of Species Treatments	18	(1)
Species concept for Lasiopogon	19	(1)
Phylogenetic Analysis	19	(2)
Morphology of Lasiopogon and Structures Used in Classification	21	(19)
Head	22	(2)
Thorax and Appendages	24	(4)
Abdomen	28	(1)
Male Genitalic Structure	28	(6)
Female Genitalic Structure	34	(4)
Genitalic Inversion	38	(1)
Copulation	39	(1)
Taxonomy of Lasiopogon	40	(227)
Genus Lasiopogon Loew	40	(8)
Synonomy	40	(1)
Type Species Designation	40	(1)
Generic Diagnosis	41	(1)
Similar Genera	42	(1)
Immature Stages	43	(1)
Natural History	44	(3)
Distribution	47	(1)
Identification Keys to the Lasiopogon Species of the Nearctic and East Palaearctic Regions	48	(23)
Identification key to the Nearctic species of Lasiopogon occurring east of the Rocky Mountains	49	(6)
Key to the Nearctic species of Lasiopogon occurring in and west of the Rocky Mountains	55	(13)
Key to the Lasiopogon species of the East Palaearctic (east of 60° E longitude)	68	(3)
Descriptions of Species in the opaculus Section	71	(196)
Lasiopogon akaishii	71	(6)
L. apache sp nov.	77	(6)
L. appalachensis sp.nov.	83	(6)
L. chaetosus	89	(6)
L. chrysotus sp. nov.	95	(4)
L. cinereus	99	(12)
L. coconino sp. nov.	111	(6)
L. flammeus sp. nov.	117	(4)
L. hasanicus	121	(7)
L. hinei	128	(10)
L. kjachtensis	138	(6)
L. lavignei sp. nov.	144	(5)
L. lehri sp. nov.	149	(7)
L. leleji sp. nov.	156	(4)
L. marshalli sp. nov.	160	(6)
L. monticola	166	(13)
L. oklahomensis	179	(6)
L. opaculus	185	(8)
L. phaeothysanotus sp. nov.	193	(4)
L. piestolophus sp. nov.	197	(6)
L. qinghaiensis sp. nov.	203	(5)
L. quadrivittatus	208	(10)
L. rokuroi	218	(6)
L. schizopygus sp. nov.	224	(7)
L. shermani	231	(6)
L. slossonae	237	(8)
L. terneicus	245	(7)
L. tetragrammus	252	(8)
L. woodorum sp. nov.	260	(7)
Phylogeny of Lasiopogon	267	(41)
Phylogenetic Interpretation of the Stichopogoninae and the Monophyly of Lasiopogon	267	(8)
Character Analysis	267	(4)
Relationships Among the Genera of the Stichopogoninae and the Monophyly of the Subfamily	271	(2)
The Monophyly of Lasiopogon	273	(2)
Phylogeny of the Species Groups	275	(20)
Character Analysis	275	(14)
Phylogenetic Relationships	289	(6)
Phylogeny of the opaculus section	295	(13)
Character Analysis	295	(5)
Phylogenetic Relationships	300	(8)
Biogeography of Lasiopogon	308	(21)
Distributional Patterns	308	(8)
The cinctus clade and other West Palaearctic species	308	(2)
The bivittatus clade exclusive of the opaculus section	310	(2)
The opaculus section	312	(4)
Theoretical Preamble	316	(1)
Geological and Climatic History	317	(2)
Historical Biogeography of Lasiopogon	319	(10)
Fossil Asilidae	319	(1)
The Jurassic and Pangaea	319	(1)
Early Vicariance and the cinctus clade	320	(2)
The bivittatus clade	322	(7)
Concluding Remarks	329	(2)
Acknowledgements	331	(2)
Appendix: Checklist of the Species and Species Groups of Lasiopogon	333	(6)
References	339	(12)
Index	351