Eurhoptus sordidus LeConte, 1876

Anderson, Robert S. & Caterino, Michael S., 2018, A revision of the genus Eurhoptus LeConte, 1876 (Curculionidae, Cryptorhynchinae) of America north of Mexico, ZooKeys 787, pp. 37-80 : 51-53

Eurhoptus sordidus LeConte, 1876 Figures 4, 5

Acalles sordidus LeConte, 1876: 243; Blatchley and Leng 1916: 501.

Eurhoptus sordidus (part); Blatchley and Leng 1916: 501; Kissinger 1964: 64; O’Brien and Wibmer 1982: 136.

Notes about types.

This species was described from a single specimen labelled “Tex”. It has a rectangular label “776” and a red square label with "Type 5268" and a handwritten label " A. sordidus Lec.". It is not dissected but appears to be a male based on the more coarsely punctate rostral apex. The type was not examined although high resolution images posted on the MCZC Online Type Database (http://140.247.96.247/mcz/Species_record.php?id=5002) were examined. The name E. sordidus has been consistently applied to specimens of Eurhoptus that were not E. pyriformis from Texas east into eastern North America; however, specimens from Texas are distinct from those further east and at least two species under this name have been suggested ( Anderson 2002). LeConte’s type came from Gustaf Wilhelm Belfrage who collected insects mainly in Bosque County, Texas, where he lived from 1870-1879 ( Geiser 1933). We here apply the name E. sordidus to specimens from throughout Texas north into bordering Oklahoma and Arkansas, and east through Louisiana to Mississippi. The herein described new species and the resurrected species closely related to E. sordidus occur further to the east and not into Texas although the three are narrowly sympatric in Louisiana and Arkansas. Kissinger (1964) was the first to recognize this species as Eurhoptus .

Redescription.

Body length (exclusive of head and rostrum) 2.1-2.7 mm, cuticle largely bare, variously covered with short, fine recurved seta-like scales only, although often encrusted and coated with a fine film. Pronotum with lateral margins rounded, margins strongly constricted at about apical one-third such that apical one-third is distinctly tubulate, greatest width at about basal one-third, medially carinate or not. Elytra strongly rounded dorsally and laterally, striae distinct, punctures moderate in size and depth; all elytral intervals evenly elevated, slightly rounded, each with single row of fine recurved seta-like scales. Metaventrite medially impressed behind mesoventral cup. Abdomen with ventrite 1 with pair of obliquely arranged transversely elongate pits which are shallowly continuous medially (but because of encrustation appearing as separate in most specimens), area around pits with dense inwardly directed scales. Legs with femora and tibiae at most fringed with a few erect scales especially along outer margin of tibiae, hind tibiae subequal in width throughout most of length. Aedeagus about as long as one-half length of aedeagal apodemes, in lateral view slightly ventrally curved, in dorsal view with margins subparallel but gradually tapered towards apex at about apical one-third where more strongly tapered, apex not produced medially as narrow extension, broadly rounded at tip. Internal sac with large distinct cruciform apical sclerite complex, with well-defined transverse bar, anterior and posterior bars not well defined.

Distribution

(Figure 5). This species is distributed from Texas and Oklahoma east into Arkansas and Louisiana with a single outlying specimen from southern Missis sippi. Any literature records of this species from the eastern U.S.A. are of E. curtus or E. aenigmaticus . We have been able to sequence individuals from Arkansas and Texas, and they are very similar and closely related.

Specimens examined

(208). ARKANSAS: Montgomery Co.: 2.42 km. E. Crystal Recreation Area, slopes at FS 177K (34.5, -93.6), C.E. Carlton & H.W. Robison, 19 Jun 1992, (1, UAAM); Montgomery Co.: Crystal Recreation Area, S. of campground (34.5, -93.6), C.E. Carlton & H.W. Robison, 27 Sep 1991, deciduous litter (1, UAAM); Montgomery Co.: Little Missouri Falls Recreation Area, SW of river (34.4, -93.9), C.E. Carlton & H.W. Robison, 25 Apr 1992, maple beech litter (1, UAAM); Montgomery Co.: (34.29035, -93.35577), C.E. Carlton, (1, CUAC), DNA extract SSM512; Polk Co.: Caney Creek Wilderness Area, 5.63 km. N. Bard Springs (34.4, -94.1), C.E. Carlton & H.W. Robison, 25 Jun 1991, maple beech litter (1, UAAM); Polk Co.: Ouachita National Forest (34.3808, -94.0273), C.E. Carlton & J.S. Park, 16 Oct 2012, leaf litter (2, CUAC; 2, LSAM), DNA extracts SSM491, SSM476, SSM477, SSM492. LOUISIANA: Calcasieu Par.: Sam Houston Jones State Park (30.3, -93.267), A. Cline; A. Tishechkin, 11 Feb 2002, leaf litter (2, CMNC); Natchitoches Par.: Kisatchie National Forest, Kisatchie Bayou (31.44, -93.09), A.R. Cline & S. Dash, 20 Sep 2003, sifting (1, CWOB); Natchitoches Par.: Kisatchie National Forest, Kisatchie Bayou (31.44, -93.09), A.R. Cline, 20 Jul 2003, litter/tree holes (3, CWOB); Natchitoches Par.: Kisatchie Na tional Forest. Red Bluff Campground (31.5, -93.14), E.G. Riley; L. Prochaska, 1 Apr 1989, beech- Magnolia -pine litter (1, CMNC). MISSISSIPPI: Jackson Co.: Ocean Springs (30.41, -88.828), R.L. Brown, 10 May 1981 (1, MEM). OKLAHOMA: Latimer Co.: 11.26 km. S. Wilberton (34.81, -95.31), P.W. Kovarik, 15 Oct 1989, sawdust (1, CMNC); Latimer Co.: (34.9, -95.1), K. Stephan, Mar 1983, (1, ASUIC); Latimer Co.: (34.9, -95.1), K. Stephan, Dec 1981, (1, TAMU); Latimer Co.: (34.9, -95.1), K. Stephan, Feb 1983, (1, TAMU); Latimer Co.: (34.9, -95.1), K. Stephan, Mar 1983, (5, TAMU); Latimer Co.: (34.9, -95.1), K. Stephan, Apr 1983, (5, TAMU); Latimer Co.: (34.9, -95.1), K. Stephan, Nov 1982, (1, ASUIC); Latimer Co.: (34.9, -95.1), K. Stephan, 8 Aug 1990, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Dec 1987, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Dec 1991, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Jul 1992, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Jun 1991, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, May 1990, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, May 1991, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, May 1992, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Nov 1990, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Nov 1991, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Sep 1991, (1, FSCA); Latimer Co.: (34.9, -95.1), K. Stephan, Dec 1985, (2, ASUIC); Latimer Co.: (34.9, -95.1), K. Stephan, Dec 1986, (2, ASUIC); Latimer Co.: (34.9, -95.1), K. Stephan, Mar 1986, (2, ASUIC); Latimer Co.: (34.9, -95.1), K. Stephan, 4 Apr 1990, (2, FSCA); Latimer Co.: Buffalo Mountains (34.9, -95.1), K. Stephan, Jun 1991, (2, TAMU); Latimer Co.: Red Oak (34.95, -95.08), K. Stephan, 14 May 1978 (3, CWOB). LeFlore Co.: Rich Mt. (34.7, -94.5), K. Stephan, 24 Feb 1992, (1, FSCA). LeFlore Co.: Ouachita National Forest (34.78, -94.99), K. Stephan, Jul 1994, (2, TAMU). McCurtain Co.: Beaver Bend State Park (34.13, -94.70), W. Suter, 31 Jul 1968, litter (1, CWOB); McCurtain Co.: Beaver Bend State Park (34.13, -94.70), W. Suter, 27 Jul 1968, litter (1, CWOB); McCurtain Co.: Beaver Bend State Park (34.13, -94.70), W. Suter, 27 Jul 1968, litter (1, LSAM). TEXAS: Bandera Co.: Hill Country Natural Reserve (29.6, -99.2), C.W. O’Brien & E. Gage, 11 Mar 2001, mixed oak litter (1, ASUIC); Bandera Co.: Lost Maples State Natural Area (29.81958, -99.57066), R.S. Anderson, 28-30 Apr 1988, berlese leaf litter (1, CMNC); Bandera Co.: Lost Maples State Natural Area (29.81958, -99.57066), R.S. Anderson, 28 Apr-2 May 1987, berlese leaf litter (4, CMNC); Bandera Co.: Lost Maples State Natural Area, Maple Trail (29.82, -99.57), C.W. O’Brien & Gages, 10 Mar 2001, litter (1, ASUIC); Bandera Co.: Lost Maples State Natural Area, (29.82, -99.57), C.W. O’Brien, 9 Mar 2001, litter (2, CWOB); Bastrop Co.: Buescher State Park (30.041, -97.162), R.S. Anderson, 3 May 1988, leaf litter berlese (2, CMNC); Bell Co.: Camp Kachina , 6.44 km. W. Temple (31.16, -97.49), E.G. Riley, 5 Mar 1995, leaf litter berlese (1, EGRC); Bexar Co.: San Antonio, Ebony Hill Research Station (29.488, -98.700), E.G. Riley, 9 Feb 1996, berlese forest litter (2, TAMU); Blanco Co.: Pedernales Falls State Park, Nature Trail (30.306, -98.256), R.S. Anderson, 3 May 1988, oak-elm-juniper litter (2, CMNC); Blanco Co.: Pedernales Falls State Park, Twin Falls (30.334, -98.252), R.S. Anderson, 3 May 1988, Carya / Celtis leaf litter berlese (2, CMNC); Brazos Co.: Ball’s Ferry, 9.66 km. S.W. College Station (30.49, -96.34), E.G. Riley, 26 Nov 2004, cottonwood leaf litter berlese (1, EGRC); Burnett Co.: Inks Lake State Park, Pecan Flat Campground (30.733, -98.364), R.S. Anderson, 21 May 1989, pecan-juniper leaf litter berlese (5, CMNC); Colorado Co.: 1 km. S. Altair on #71 (29.54, -96.45), R.S. Anderson, 1 Feb 1989, live oak/ Ilex woodland litter berlese (1, CMNC); Colorado Co.: Columbus (29.70665, -96.53534), R.S. Anderson, 4 Nov 1988, riparian ravine hardwood litter (1, CUAC), DNA extract MSC2474; Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 4 Nov 1988, riparian ravine litter (12, CMNC); Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 21 Feb 1989, riparian ravine litter (15, CMNC); Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 22 Mar 1988, riparian ravine litter (2, CMNC); Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 6 Apr 1988, riparian ravine litter (3, CMNC); Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 1 Feb 1988, riparian ravine litter (5, CMNC); Colorado Co.: Columbus (29.7072, -96.5344), R.S. Anderson, 17 May 1987, riparian ravine litter (9, CMNC); Gonzales Co.: Palmetto State Park, near East entry (29.59339, -97.58558), R. Anderson, 17-18 Apr 1989, leaf litter berlese (16, CMNC); Grimes Co.: limestone outcrop, 6.44 km. E. Navasota (30.453, -96.026), E.G. Riley, 17 Feb 1996, berlese soil surface litter (5, TAMU); Houston Co.: Big Slough Wilderness Area, FR517 and Four C’s Hiking Trail (31.496, -95.118), R.S. Anderson, 9 May 1988, bottomland hardwood litter (2, CMNC); Houston Co.: Big Slough Wildlife Area, 0.8 km. N. junction FR517 and FR511-3 (31.496, -95.118), R.S. Anderson, 9 May 1988, pine-hardwood litter berlese (1, CMNC); Sabine Co.: 14.5 km. E. Hemphill, Beech Bottom (31.386, -93.706), R. Anderson; E. Riley; E. Morris, 24 Apr 1989, leaf litter berlese (5, CMNC); Sabine Co.: 14.5 km. E. Hemphill, Beech Bottom (31.386, -93.706), E.G. Riley, 16 Mar 1997, litter Berlese beech- Magnolia forest (2, EGRC); Sabine Co.: Hemphill Sabine National Forest, 0.8 km. N. of P. Gomer Rd (31.36489, -93.70636), beech bottom litter (2, CUAC; 2, LSAM), DNA extracts SSM480, SSM481, SSM482, SSM497; San Patricio Co.: Welder Wildlife Refuge (28.118, -97.407), H. & A. Howden; C. Scholtz, 17-25 May 1985, (2, CMNC); San Patricio Co.: Welder Wildlife Refuge (28.118, -97.407), R.S. Anderson, 18-19 Apr 1989, (4, CMNC); San Patricio Co.: Welder Wildlife Refuge, Hackberry Motte (28.118, -97.407), R.S. Anderson, 12-13 Oct 1988, (3, CMNC); San Patricio Co.: Welder Wildlife Refuge, Hackberry Motte (28.118, -97.407), R.S. Anderson, 13-15 Jun 1988, Celtis leaf-branch litter (9, CMNC); San Patricio Co.: Welder Wildlife Refuge, 11.26 km. N. Sinton (28.118, -97.406), R.S. Anderson, 18-19 Apr 1989, (1, CUAC), DNA extract MSC2473; San Patricio Co.: Welder Wildlife Refuge, near Hackberry Motte (28.118, -97.407), R.S. Anderson, 1-2 Nov 1988, berlese (1, CMNC); San Patricio Co.: Welder Wildlife Refuge, Big Lake (28.120, -97.372), E.G. Riley, 8 Dec 2007 (2, EGRC); San Patricio Co.: Welder Wildlife Refuge (28.118, -97.407), J.M. Mora, 20 Jul 1989, pitfall trap, live oak woodland (3, TAMU); Travis Co.: Austin, Brackenridge Field Lab (30.284, -97.778), E.G. Riley, 10 Feb 1996, berlese rotten pecan log (1, EGRC); Travis Co.: vic. Long Hollow Creek (30.458, -97.875), 7 May 1994, E.G. Riley, berlese forest litter (2, TAMU); Travis Co.: Shelberg Tract, near Cypress Creek arm of Lake Travis (30.44, -97.87), E.G. Riley, 7 May 1994, berlese forest litter and dung pellets (2, TAMU); Tyler Co.: 4.5 km. W. 3 km. N. Spurger, Big Thicket Natural Preserve, Beech Woods Trail (30.719, -94.227), R.S. Anderson, 8 Mar 1989, beech- Magnolia leaf litter berlese (1, CMNC); Uvalde Co.: Garner State Park (29.6, -99.7), C.W. O’Brien, 10 Mar 2001, oak litter (1, ASUIC); Uvalde Co.: Concan, Neal’s Lodge Area (29.494, -99.714), E.G. Riley, 9 Apr 1995, berlese forest litter (6, EGRC); Walker Co.: Sam Houston National Forest, Stubblefield Lake Campground (30.56, -95.64), E.G. Riley, 15 Oct 1995, berlese forest litter (1, EGRC).