Pachystilicus quadriceps
Authors/Creators
- 1. Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00 - 679 Warsaw, Poland. & Department of Invertebrate Zoology and Parasitology, University of Gdańsk, 80 - 308, Gdańsk, Poland. & Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA 50011, USA.
- 2. Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00 - 679 Warsaw, Poland.
Description
Pachystilicus quadriceps (LeConte, 1880)
Fig. 3
Stilicus quadriceps LeConte, 1880: 178 (original description, key, notes).
Pachystilicus quadriceps – Casey 1905: 227 (redescription). — Leng 1920: 104. — Lucas 1920: 475 (genotype fixed). — Blackwelder 1952: 285 (notes). — Moore & Legner 1979: 112. — Poole & Gentili 1996: 370. — Newton et al. 2001: 387 (comment on taxonomic status). — Bousquet et al. 2013: DwC-A database.
Diagnosis
Differs from P. hanhami by longer and denser setae covering body, longitudinal carina of basisternum more elevated. Additionally, median emargination of posterior margin of sternite VIII is deeper and broader than in P. hanhami, depth of emargination of ca ¼ of sternite length.
Type material
Lectotype (designated here) USA • ♂; “ Cal. / ♂ / Type 6584 / S. quadriceps Lec. / J.L. LeConte Collection ”; MCZ.
Additional studied material
CANADA – British Columbia • 1 spec.; “ Mts. Between Hope and Okanagan B. C. Sept. 90 / F C Bowditch Coll. / Stilicus quadriceps Lec ”; MCZ.
USA – California • 1 spec.; “Cala / Coll Hubbard and Schwarz / quadriceps Lec ”; NMNH. – Massachusetts • 1 spec.; “ Brookline Mass 4-14-88 / F. C. Bowditch Coll ”; MCZ.
Redescription
MEASUREMENTS. Body length: 5 mm; forebody length: 2.75–2.90 mm. COLOURATION. Dark brown to reddish brown; head darker, legs and antennae reddish brown (Fig. 3A).
HEAD. As in generic description (HL: 0.95–1.00 mm; HW: 1.0– 1.1 mm), with antennomere 1 elongate, widest at tip; antennomeres 2–4 elongate; antennomere 5 weakly elongate; antennomeres 6–10 gradually becoming transverse; antennomere 11 elongate, 1.5 × as long as antennomere 10.
THORAX. As in generic description (pronotal size: PL: 0.8–0.9 mm; PW: 0.8–0.9 mm; elytra size: EL: 1 mm; EW: 1.1–1.2 mm).
ABDOMEN. As in generic description; sternite VII with apical margin straight.
Distribution
The species has previously been recorded from the following US states: California, Massachusetts, and Missouri (Newton 2018). We newly report this species from the Canadian province of British Columbia.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- MCZ , NMNH
- Event date
- 1988-04-14
- Verbatim event date
- 1988-04-14
- Scientific name authorship
- LeConte
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Order
- Coleoptera
- Family
- Staphylinidae
- Genus
- Pachystilicus
- Species
- quadriceps
- Taxon rank
- species
- Type status
- lectotype
- Taxonomic concept label
- Pachystilicus quadriceps (LeConte, 1880) sec. Żyła, Tokareva & Koszela, 2022
References
- LeConte J. L. 1880. Short studies of North American Coleoptera. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 8 (3): 163 - 218. https: // doi. org / 10.2307 / 25076392
- Casey T. L. 1905. A revision of the American Paederini. Transactions of the Academy of Science of Saint Louis 15 (2): 17 - 248. https: // doi. org / 10.5962 / bhl. title. 9845
- Leng C. W. 1920. Catalogue of the Coleoptera of America, North of Mexico. The Cosmos Press, Cambridge, MA, USA. https: // doi. org / 10.5962 / bhl. title. 6543
- Lucas R. 1920. Catalogus alphabeticus generum et subgenerum Coleopterorum orbis terrarum totius (famil., trib., subtr., sect. incl.). V. 1. Nicolaische, Berlin.
- Blackwelder R. E. 1952. Generic names of the family Staphylinidae. Bulletin of the United States National Museum 200: 1 - 483.
- Moore I. & Legner E. F. 1979. An Illustrated Guide to the Genera of the Staphylinidae of America North of Mexico exclusive of the Aleocharinae (Coleoptera). Division of Agricultural Sciences, California University. Available from http: // www. faculty. ucr. edu / ~ legneref / eflpub / 185. htm [accessed 11 Apr. 2022].
- Poole R. W. & Gentili P. 1996. Nomina Insecta Nearctica: a Checklist of the Insects of North America. Volume 1 (Coleoptera, Strepsiptera). Entomological Information Services, Rockville, MD, USA. Available from http: // nearctica. com / nomina / main. htm [accessed 11 Apr. 2022].
- Newton A. F., Thayer M. K., Ashe J. S. & Chandler D. S. 2001. Staphylinidae Latreille, 1802. In: Arnett Jr J. H. & Thomas R. H. (eds) American Beetles. V. 1. Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia. CRC Press LLC, Boca Raton, FL, USA. https: // doi. org / 10.1201 / 9781482274325
- Bousquet Y., Bouchard P., Davies A. E. & Sikes D. S. 2013. Checklist of beetles (Coleoptera) of Canada and Alaska. Second edition. ZooKeys 360: 1 - 44. https: // doi. org / 10.3897 / zookeys. 360.4742
- Newton A. 2018. Staphyliniformia world catalog database. In: Banki O., Roskov Y., Doring M., Ower G., Vandepitte L., Hobern D., Remsen D., Schalk P., DeWalt R. E., Keping M., Miller J., Orrell T., Aalbu R.,