Nematodes rugosipennis Otto, 2021

Otto, Robert L., 2021, A review of the Nearctic species of Nematodes (Coleoptera: Eucnemidae: Macraulacinae: Nematodini) with a description of one new species, Insecta Mundi 2021 (881), pp. 1-19 : 16-19

Nematodes rugosipennis Otto , new species

Fig. 18–21

Diagnosis. A well-developed, elongate, incomplete femoral ridge will readily distinguish N. rugosipennis new species from most Nematodes species in the region, except N. penetrans . A shorter antennomere V in relation to antennomere IV will further distinguish the new species from N. penetrans .

Type material. Female holotype: “ FLORIDA: ALACHUA COUNTY, GAINESVILLE, BEVILLE HTS, 19-III-80, L.A. STANGE, BLACKLIGHT TRAP” / “ HOLOTYPE:, Nematodes , rugosipennis ♀, Otto, det. R.L. Otto, 2019” (red printed label). Male allotype: “ Florida: Marion Co., ~ 4 miles E Ft. McCoy, April 26–June 15, 2015, Lindgren funnel trap, Kyle E. Schnepp” / “ ALLOTYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label). Holotype is deposited in FSCA. Allotype is deposited in KESC.

Paratypes. 17 ♂♂, 22 ♀♀: FLORIDA: 2 ♂♂ 1 ♀, “ USA FLORIDA Columbia Co., O’Leno State Park, 01-V- 96, Coll. Robert Vigneault” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♂ (or ♀), Otto, Det. R.L. Otto, 2019” (yellow printed label) (3, GERP); 1 ♂, “ USA FLORIDA Orange Co., Wekiwa Springs SP, 12-V-96, Coll. Robert Vigneault” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARA- TYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, GERP); 1 ♀, “FL: Polk Co., Green Swamp WMA, May 2001, Morris and Nigg, Malaise Trap” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, GERP); 2 ♀♀, “ USA: FL: Wakulla Co.; Apalachicola; Nat. For.; FS 366; Pine/oak savanna; 15–20-MAY-2005; 30°19.751’N; 84°30.309’W; Deans & Murray; EX: “ant heaven” malaise trap” / PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2020” (yellow printed label) (2, CDAE); 1 ♀, “ USA: FL: Leon Co.; Apalachicola; NF; FS390; 30°21.884’N; 84°40.774’W; Mosquito Hell; Malaise trap; bottomlands; 21 – 28.V.2005; S. Joshi” / PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2020” (yellow printed label) (1, CDAE); 1 ♂, “ FLORIDA: Alachua, Co., Oleno State Park, 21-IV-2009, L.A. Wilby, EAB trap w/ Manula oil” / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, FSCA); 2 ♀♀, “ FLORIDA: Wakulla Co., Ochlockowee Riv. St. Pk., 11-V-2009, L. Wilby, EAB trap w/ manuka oil” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (2, FSCA); 1 ♀, “ FLORIDA: Alachua Co., O’Leno St. Pk., 27-V-2009, L. Wilby, EAB trap w/ manuka oil” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, FSCA); 2 ♂♂, “ FLORIDA: Highlands Co., Highlands Hammock St. Pk., 27.47070, -81.55.254, 5-IV-2011, C. Carrero-Turnbull, D. Gaskilla, lindgren funnel, manuka oil” / ““ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (2, FSCA); 2 ♂♂, “ Florida: Alachua Co., San Felasco Preserve, April 5–May 6, 2014, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2021” (yellow printed label) (2, KESC); 3 ♀♀, “ Florida: Alachua Co., 3.4 miles WNW Archer, March 30–June 12, 2015, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (3, KESC); 1 ♀, “ Florida: Marion Co., ~ 4 miles E Ft. McCoy, March 21–April 26, 2015, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, KESC); 2 ♀, “ Florida: Marion Co., ~ 4 miles E Ft. McCoy, April 26–June 15, 2015, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (2, KESC); 1 ♀, “ Florida: Suwanee Co., ~ 7 miles W White Springs, March 29–April 19, 2017, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2021” (yellow printed label) (1, KESC); 1 ♀, “ Florida: Suwanee Co., ~ 7 miles W White Springs, April 19–May 16, 2017, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2021” (yellow printed label) (1, KESC); 1 ♂, “FL: Polk co., 2635 E Ewell Rd., Lakeland, 16–26/II/2018, R. Morris, WPT” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, GERP); 3 ♂♂, “FL: Polk co., 2635 E Ewell Rd., Lakeland, 18–29/III/2018, R. Morris, WPT” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (3, GERP); 1 ♂, “FL: Polk co., 2635 E Ewell Rd., Lakeland, V/1–13, /2018, R. Morris, Window pane Trap” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, GERP); 1 ♂, “ Florida: Liberty Co., Torreya S.P. at light, May 11, 2018, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2021” (yellow printed label) (1, KESC); 1 ♂, “ Florida: Alachua Co., San Felasco H.P.S.P., April 24–May 5, 2021, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2021” (yellow printed label) (1, KESC); 3 ♀♀, “ Florida: Alachua Co., San Felasco H.P.S.P., April 24–May 5, 2021, Lindgren funnel trap, Kyle E. Schnepp” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2021” (yellow printed label) (3, KESC). GEORGIA: 1 ♀, “ GEORGIA: Bibb County, 2.6 km SSW Walden, 32.68599, -83.67626, 108m, 29 Mar–13 Apr 2018, LFT, C. Barnes, BSF#78312” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2020” (yellow printed label) (1, CMNH); 1 ♀, “ GEORGIA: Cook County, 4.7km E of Ellenton, 76m, 31.17202, -83.53825, 25 Apr–15 May 2018, LFT, N. Skaggs, BSF#85831” / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2020” (yellow printed label) (1, CMNH). OKLA- HOMA: 1 ♀, “ OKLAHOMA Grady Co., Tuttle, VI/10/05, Lindgren traps, Brian Baldwin” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♀, Otto, Det. R.L. Otto, 2019” (yellow printed label) (1, GERP); 2 ♂♂, “ OKLAHOMA Grady Co., Tuttle, VI/22/05, Blacklight traps, Brian Baldwin” / “Collection of the Global, Eucnemid Research Project, (Robert L. Otto)” (green framed white label) / “ PARATYPE:, Nematodes , rugosipennis ♂, Otto, Det. R.L. Otto, 2019” (yellow printed label) (2, GERP). Paratypes are deposited in CDAE, CMNH, FSCA, GERP, and KESC.

Description. Female holotype: Length, 10.0 mm. Width, 2.5 mm. Body subcylindrical, elongate; uniformly pitch black; antennae dark brown; legs including tarsi dark brown; head, pronotum and elytra clothed with short, recumbent yellowish setae ( Fig. 18 ). Head: Subspherical; integument confluently rugose, somewhat dullish; frons convex, with median, round, shallow fovea above frontoclypeal region; apical margin of frontoclypeal region weakly trilobed, about 2 times wider than base; mandibles stout, bidentate, densely punctate. Antenna: Filiform to weakly serriform from antennomeres III–XI, attaining nearly 1/3 the length of the body; antennomere III longer than IV; antennomeres IV–V each sub-equal, longer than wide, each slightly shorter than VI; antennomeres VI–IX each sub-equal, longer than wide; antennomere X slightly shorter than IX; antennomere XI stout, slightly longer than X, less than 2.0 times longer than wide. Pronotum: Integument dullish, densely granulose to rugose; longer than wide, with moderate, sharp hind angles; lateral sides basally constricted above pronotal hind angles, parallel-sided, cranially arcuate; disc convex with deep median groove and 2 pairs of deep, circular fovea; base sinuous. Scutellar shield: Elongate, sub-triangular, setose, shallowly punctate and distally rounded. Elytra: Distinctly striate; interstices elevated; integument somewhat shiny, transversely rugose. Legs: First tarsomere as long as the combined lengths of the remaining four on meso- and metatarsi; tibiae rounded in cross section; metatarsomeres I–III simple; metatarsomere IV excavate-emarginate; metatarsomere V elongate with simple claws. Venter ( Fig. 19 ): Very closely punctate, with short, recumbent yellowish setae; hypomeron with basally obliterated lateral antennal grooves; well-developed femoral ridge incomplete, elongate, extending near the lateral side of the pronotum; metepisterna parallel-sided; elytral epipleura punctate; metacoxal plates medially more than 3.0–6.0 times wider than laterally; last abdominal ventrite apically produced.

Male allotype ( Fig. 20 ). Length, 9.0 mm. Width, 2.0 mm. Antennae filiform to weakly serriform, reaching at least 1/3 the length of the body; habitus similar to holotype; legs and antennae dark brown; antennomere X is as long as antennomere IX; pronotum similar to holotype, except second pair of circular fovea posterolaterad of the first pair are absent; integument similar to holotype.

Aedeagus (paratype) ( Fig. 21 ). Basal piece longer than wide, laterally parallel-sided, dorsally open, apically rounded; remaining parts elongate, constricted laterally just above the basal piece, laterally sinuous; parameres elongate, apically rounded, triangular-shaped lateral tooth present near apices; median lobe elongate and narrow, apically pointed, deeply and narrowly bifid, longer than parameres.

Variation. Seventeen male and 22 female paratypes were examined. Male paratypes measured 7.0–10.0 mm long and 1.5–2.0 mm wide. Female paratypes measured 6.0– 11.5 mm long and 1.5–2.5 mm wide. Fifteen of the 22 female paratypes are shorter and narrower than the holotype. The three female paratypes are larger and wider than the holotype. The four remaining female paratypes are just as long as but slightly narrower than the holotype. All male paratypes are smaller and narrower than the holotype. Four of the 17 male paratypes is as long as and as wide as the allotype. Five male paratypes are longer than the allotype. Eight male paratypes are shorter than the allotype. Circular fovea on the pronotal disc are much deeper in seven of the 17 male paratypes and eight of the 22 female paratypes compared to the other paratypes, holotype, and allotype. All paratypes lack the second pair of circular fovea on the pronotum. Two male paratypes are brownish in color, possibly teneral at the time they were collected. There are no other exoskeletal difference between any paratypes, allotype, and the holotype.

Distribution. This eucnemid species is known from 41 specimens taken from a number of locations in Florida, two locales in Georgia and a single location in Oklahoma.

Biology. The holotype was taken from a blacklight trap placed in Gainesville, Florida. Eleven female paratypes, three male paratypes and male allotype were taken from Lindgren funnel traps deployed in Alachua, Marion, and Suwanee Counties, Florida. Five male paratypes were taken from a window pane trap deployed in Polk County, Florida. Two female paratypes were taken from “ant heaven” Malaise trap placed within a pine/oak savanna in Wakulla County, Florida. One female paratype was taken from a Malaise trap placed in bottomlands within Leon County, Florida. One female paratype was taken from a Malaise trap placed in Polk County, Florida. One male and three female paratypes were taken from Emerald Ash Borer trap baited with Manuka oil in two Florida Counties. Two male paratypes were taken from Lindgren funnel trap baited with Phoebe oil in Highlands County, Florida. One male paratype was taken from light in Liberty County, Florida. Two female specimens were taken from Lindgren funnel traps placed in two locations in Georgia. Two male paratypes were taken from blacklight in Oklahoma. One female paratype was taken from Lindgren funnel traps in Oklahoma. Immature stages remain unknown.

Etymology. The specific epithet is derived from its transversely rugose surfaces present throughout the elytral interstices.

Note. Basal sex combs present in male Nematodes species are often difficult to observe when examining specimens under magnification. Protarsomere I was observed to be shorter in male specimens compared to the length of protarsomere I in female specimens.

Figures

Figures 18–21. Nematodes rugosipennis Otto, sp. nov. 18) Female holotype, dorsal habitus. 19) Female holotype, ventral habitus. 20) Male allotype, dorsal habitus. 21) Male paratype, aedeagus, dorsal. (Scale: 18–20 = 5.0 mm; 21 = 1.0 mm.)