Homaeotarsus sellatus ( LeConte, 1863 )

Brunke, Adam J. & Schnepp, Kyle E., 2021, Taxonomic Changes in Nearctic Paederinae, New Records and a Redescription of the Enigmatic Genus Acrostilicus Hubbard (Coleoptera: Staphylinidae), The Coleopterists Bulletin 75 (4), pp. 883-894 : 892

Homaeotarsus sellatus ( LeConte, 1863) ( Fig. 3D ) BOLD:ACX6867

Cryptobium sellatum LeConte 1863: 45 . Homaeotarsus (Hesperobium) sellatus : Newton

2019 (catalog).

Type Material. Syntype (male, MCZ, examined virtually): “[yellow disc]/[male symbol]/ C. sellatum Lec [handwritten label]/Type 6428 [red label]”.

Other Material. CANADA: Ontario: Prince Edward Co., 24.VII., J. F. Brimley (1, FSCA) . Toronto Reg., Toronto , 28.IV.1894 (3, CNC) ; Hastings Co., Trenton , 22.VI.1908, Evans (1, CNC) ; Leeds and Grenville Co., St. Lawrence Is. Nat park, Grenadier Interpretive Centre , black light, 2.VI.1975, E. Sigler (9, CNC) [including barcode voucher CNCCJ2656-14]. Quebec: Knowlton , 7.VII.1929, L. J. Milne (1, CNC) ; Limbour, Touraine , 21.VI.1973, R. Sexton (1, CNC) [barcode voucher CNCCJ2655-14].

UNITED STATES: Indiana: Lake Co., W. S. B. 15.IV.1906 (3, PERC) ; Knox Co., W. S. B., 13.IX.1920 (2, PERC) ; Lake Co., W. S. B. 21.IV.1906 (3, PERC) ; Posey Co., W. S. B., 11.IV.1901 (1, PERC) ; Putnam Co., W. S. B., 24.VIII.1920 (1, PERC) ; Tippecanoe Co., W. Lafayette, 18.V.1978, M. and N. Deyrup (1, RMBC) ; Tippecanoe Co., Lafayette , 9.VI.1983, U-V light, N. M. Downie (1, FSCA) ; Tippecanoe Co., S. River Rd, V.1950, corn borer lights (1, PERC) ; Lafayette, Agronomy Farm , light trap, 1–8. VI.1950 (4, PERC) ; Lafayette, Agron. Farm , 24.V.1950, Light Trap (1, PERC) . Nebraska: Cherry Co., Valentine Wildlife Refuge , 28.VI.1968 (2, CNC) ; Hall Co., Alda , light trap, 31.V.1966, B. C. Ratcliffe (2, CNC) . New York: Clinton Co., Plattsburgh AFB, 10.VI.1982, C. W. Mills, III, at ultraviolet light; St. Lawrence Co. , Rossie , 12–16. VI.1978, N. M. Downie (1, RMBC) ; Thomas Co., Nebraska Nat. For. , mv + bl, 19.V.2007, R. Turnbow (1, FSCA) ; Washington Co., Whitehall , 1.X.1918, H. Notman (1, CNC) . Wisconsin: Door Co., Sturgeon Bay , 2.VII.1957 (1, PERC) .

Diagnosis. Homaeotarsus sellatus is easily distinguished by the combination of obsolete hind angles of the head, head with moderately dense punctures, and sutural area of elytra with a crisply defined keyhole-shaped dark marking ( Fig. 3D ).

Distribution. Canada: ON, QC. United States: IL, IN, MA, ME, NE [new record], NH, NY [new record], WI [new record].

Comments. Homaeotarsus sellatus is broadly distributed in northeastern North America ( Newton 2019) and is here newly reported from New York, Wisconsin, and much farther west in Nebraska.

Figures

Fig. 3. Paederinae. A) Stamnoderus monstrosus, dorsal head, B) Pseudolathra oregonensis, protibia, ventral protrusion absent, C) Lobrathium grande, protibia, ventral protrusion present, D) Homaeotarsus sellatus, dorsal habitus, E) H. cribratus, dorsal habitus, F) H. serpentinus, dorsal habitus. Scale bars = 0.2 mm (A–C), 1 mm (D–F).