Megastilicus formicarius Casey 1889
Creators
- 1. 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. & Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00 - 679, Warszawa, Poland.
- 2. Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00 - 679, Warszawa, Poland.
Description
Megastilicus formicarius Casey, 1889
Fig. 1
Type materialLectotype (here designated) USA • ♂; “Drac. Mass. / Type USNM 38356 / Megastilus formicarius Csy ”; NMNH.
Paralectotypes USA • 1 spec.; “Drac. Mass. / Casey bequest 1925 / formicarius-5 PARATYPE USNM 38356 ”; NMNH • 1 spec.; “Casey bequest 1925 / formicarius-2 PARATYPE USNM 38356 ”; NMNH • 1 spec. with ant; “Casey bequest 1925 / formicarius-3 PARATYPE USNM 38356 ”; NMNH • 1 ♂; “Mass / Casey bequest 1925 / formicarius-6 PARATYPE USNM 38356 ”; NMNH.
Additional studied materialUSA • 1 spec.; “Pen Mar Pa”; NMNH • 1 spec.; “ Harrisonville Mo. / Aug 2015 ”; NMNH • 1 spec.; “ Cumberland Co. / Maine 1916”; NMNH • 1 spec.; “ Newark NJ”; NMNH • 1 spec.; “ Linell? Coll Chittenden ”; NMNH • 1 ♂; “ CypMills Tex / Coll Chittenden ”; NMNH • 1 spec.; “ Sherborn, Massachusetts / IV-5 ’-25 / C.A. Frost /John George Gehring collection”; MCZ • 1 spec. [with Formica exsectoides]; “Wickham collection 1933 / Iowa City / Wickham IV-24-98 ”; MCZ • 2 specs; “ Natick / V-12-12 / Mass”; MCZ • 9 specs; “ Drac. Mass / 4/4/-86 ”; MCZ • 1 spec. [with Formica exsectoides]; “ Newfoundl’d, N.J. / X.17.1913 / C.A. Frost / C.A. Frost Collection 1962”; MCZ • 1 spec.; “ Chocorua N.H. / 5-2-06 / F.C. Bowditch Collection ”; MCZ • 1 spec.; “ Palos Park / Ill. / 4.14.34 / c. Seevers”; AMNH • 1 spec.; “ Natik Mass. Frost. 12.5 / Massachusetts / N.am / Mus 8 crm”; AMNH • 1 spec.; “ Crawfordsville Ind. 4.XII.50 ”; AMNH.
DiagnosisHead longer than wide.Antennomere 4 elongate. Teeth on labrum blunt. Eyes smaller than in M. iowaensis sp. nov., ca ⅙ of head length. Median emargination of posterior margin of sternum VIII deeper and broader than in M. iowaensis sp. nov.
RedescriptionBODY. Colour of specimens from pale brown/sandy to brown (Fig. 1A–B). Head and tip of abdomen darker. Body length from tip of head to tip of abdomen 5.5–6.0.
HEAD. Width 1.0–1.1, length 1.0–1.5. Antennomere 1 elongate, widest at tip; antennomeres 2 and 3 elongate; antennomere 4 weakly elongate; antennomeres 5 to 10 gradually becoming strongly transverse; antennomere 11 elongate, 1.5 × as long as antennomere 10. Antennomeres 1 and 2 sparsely pubescent; antennomeres 3 and 4 more densely pubescent, 5 to 11 densely covered with tomentose pubescence. Maxillary palpomere 2 short and slender, with only few setae, maxillary palpomere 3 slightly expanded towards apex with denser setation, maxillary palpomere 4 glossy. Eyes about ⅙ of head length, shifted anteriorly, ¼ to ⅕ of temple length.
THORAX. Pronotum width 0.9–1.0, length 1.0–1.1. Elytra width 1.4–1.5, length 1.3–1.4.
LEGS. Two long setae on outer margin of metacoxa. Seta closer to abdomen longer and thicker than seta more distant from abdomen.
ABDOMEN. Sternum VII with apical margin straight. Tergum VIII with rounded posterior margin. Male with sternum VIII with moderately deep and broad median emargination of posterior margin; depth of emargination of ca ⅕ of sternum length; sides of emargination rounded (Fig. 1C); surface right anterior to emargination without setae, while margins with dense setation.
AEDEAGUS. With ventral process in parameral view narrower in middle; lateral plates of internal sac fused to sides of median lobe and indistinctive (Fig. 1D–E).
OccurrenceThe species has previously been recorded from the Canadian provinces of Manitoba, Newfoundland and Labrador, and Ontario and the following US states: Illinois, Indiana, Iowa, Massachusetts, New Jersey and Ohio (A. Newton, unpublished database). New state records include: Missouri, New Hampshire, Pennsylvania and Texas.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- AMNH , MCZ , NMNH
- Event date
- 1950-12-04 , 1998-04-24 , 2006-02-05 , 2012-05-12
- Family
- Staphylinidae
- Genus
- Megastilicus
- Kingdom
- Animalia
- Material sample ID
- USNM 38356
- Order
- Coleoptera
- Phylum
- Arthropoda
- Scientific name authorship
- Casey
- Species
- formicarius
- Taxon rank
- species
- Type status
- lectotype , paralectotype , paratype
- Verbatim event date
- 1950-12-04 , 1998-04-24 , 2006-02-05 , 2012-05-12
- Taxonomic concept label
- Megastilicus formicarius Casey, 1889 sec. Żyła & Koszela, 2021
References
- Casey T. L. 1889. Notes on the Paederini. Entomologica Americana 5: 182 - 184.