Iphthiminus opacus (LeConte 1866)

Gardiner, Rebekka M. & Pollock, Darren A., 2015, Revision of the Nearctic species of the genus Iphthiminus Spilman (Coleoptera: Tenebrionidae), Zootaxa 4048 (3), pp. 352-391 : 362-363

Iphthiminus opacus (LeConte 1866)

( Figs. 4 , 5 , 6 , Appendix 2)

Iphthimus opacus LeConte 1866a: 121 , 172, 174 [Type Area: Nebraska, Kansas, N. Dakota, S. Dakota, Oklahoma, Colorado, Wyoming, Montana, etc. (see notes on types). Type repository: MCZ] LeConte 1866b: 61; Casey 1890: 408; Slosson 1893: 290; Slosson 1894: 4; Bowditch 1896: 9; Casey 1924: 327; Leng et al. 1920: 235.

Iphthinus opacus: Spilman 1973b: 89 .

Iphthiminus opacus : Poole and Gentili 1996: 437; Bousquet 1991; 261; Majka et al. 2008: 694, 708, 709.

Notes about type material. No specific gender of specimens was mentioned in the original description. There are four type specimens: one lectotype and three paralectotypes. The lectotype (here designated) is of undetermined gender, and has the following labels: light green circular label/ [handwritten det label] “I. rugosus Lec.”/ “ opacus Lec ”/ “ Type 7206”/ “Jan-Jul 2005 MCZ Image Database” / [red label] “ LECTOTYPE Iphthimus opacus LeConte design. Gardiner & Pollock 2015”. The three paralectotypes are unlabeled, except for a small circular label on each (two with pink label, one with light green label). The lectotype has the following characteristics: all appendages intact, elytra separated posteriorly. Light green circular labels represent localities in Nebraska, Kansas, N. Dakota, S. Dakota, Oklahoma, Colorado, Wyoming, Montana, etc. (pers. comm., Dr. Philip Perkins, 2013).

Description. With general features of Iphthiminus , and the following characteristics: GHW 2.5–3.8 mm.; GPW 4.00– 6.45 mm; GEW 5.15–8.2 mm; HL 2.7–4.5 mm; PL 2.7–4.7 mm; EL 9.4–14.5 mm; TL 14.8–22.7 mm; ratio of HL/HL 0.71–1.1; PW/PL 1.05–1.54; GEW/EL 0.47–0.67; HW/PW 0.52–0.75; HL/PL.77–1.16; PL/EL 0.27–0.37; TL/GEW 2.46–3.27; GEW/EL 1.5–2.12; PW/GEW 0.60–0.89. Pronotal punctation coarse, punctures confluent, giving rise to pronotal sculpturing, lateral edges of pronotum distinctly serrate; elytral striae extremely coarse, often overlapping to form ‘dashes’; apex of parameres closely associated with each other, slightly flared.

Diagnosis. Specimens of Iphthiminus opacus ( Fig. 4 ) are diagnosed on the following characteristics: pronotum and elytra rugose, with punctures often confluent, pronotal margins distinctly serrate, paramere apices closely associated ( Fig. 5 ).

Distribution. Based on examined specimens, the geographic range ( Fig. 6 ) of this species is as follows, organized by county (detailed locality list in Appendix 2): UNITED STATES OF AMERICA. Arizona: Maricopa (1). California: Riverside (1), San Bernardino (1), Unknown (1). Connecticut: Litchfield (1). Maine: Aroostook (2), Hancock (3), Lincoln (1), Penobscot (5), Washington (1), York (2), Unknown (1). Massachusetts: Barnstable (1), Essex (3), Franklin (2), Worcester (1), Unknown (6). Michigan: Alcona (1), Alger (2), Arenac (1), Baraga (1), Charlevoix (2), Cheboygan (8), Chippewa (5), Delta (1), Emmet (1), Lake (1), Mackinac (1), Marquette (23), Newaygo (1), Wayne (1), Unknown (5). Minnesota: Beltrami (9), Cass (1), Hubbard (1), Ramsey (1), Roseau (1), Saint Louis (9), Unknown (7). Montana: Carter (1). New Hampshire: Carroll (1), Cheshire (1), Coos (3), Grafton (4), Hillsborough (1), Strafford (6), Sullivan (4), Unknown (2). New York: Clinton (3), Essex (9), Nassau (1), St. Lawrence (4), Unknown (15). Pennsylvania: Lycoming (1), Monroe (6), Northampton (1), Pike (2), Potter (1), Westmoreland (4). South Dakota: Custer (5), Fall River (1), Pennington (1), Unknown (7). Texas: Unknown (1). Vermont: Bennington (1), Windsor (1). Virginia: Henrico (1). Wisconsin: Bayfield (11), Oconto (1), Vilas (5), Waupaca (1), Unknown (1). Wyoming: Crook (8), Unknown (2). CANADA. Alberta (1). Manitoba (10). Nova Scotia (4). Quebec (39). Ontario (22). Saskatchewan (1). Unknown (4).

Figures

FIGURE 4. Iphthiminus opacus, dorsal habitus. Duparquet, Quebec.

FIGURE 5. Male genitalia of Iphthiminus opacus, dorsal. AP = Apex, PM = Parameres, PB = Phallobase. Scale bar = 1 mm.

FIGURE 6. Distribution of Iphthiminus opacus. Circles indicate specific locations. Canadian provinces (NOAA 1999) and US counties (NOAA 2014) are shown as outlines.