Elytroleptus scabricollis Bates, 1892

GRZYMALA, TRACI L. & MILLER, KELLY B., 2013, Taxonomic Revision and Phylogenetic Analysis of the Genus Elytroleptus Dugés (Coleoptera: Cerambycidae: Cerambycinae: Trachyderini), Zootaxa 3659 (1), pp. 1-62 : 42-44

Elytroleptus scabricollis Bates, 1892

( Figs. 17 , 38 )

Elytroleptus scabricollis Bates, 1892: 172 ; Aurivillius, 1912: 456; Linsley, 1935: 96; Blackwelder, 1946: 588; Linsley, 1961a: 10; 1962b: 10; Chemsak & Linsley, 1965: 196; 1975: 110; 1982: 57; Chemsak et al., 1992: 83; Chemsak & Noguera, 1995: 63; Monné & Giesbert, 1995: 148; Noguera & Chemsak, 1996: 402; Toledo et al., 2002: 529; Noguera et al., 2002: 624; Turnbow et al., 2003: 17; Monné, 2005: 606; Monné & Hovore, 2006: 143; Hovore, 2006: 374.

Type locality. Mexico, Guerrero, Iguala .

Type material. Lectotype. (here designated) Elytroleptus scabricollis ( BMNH, sex unknown) labeled: ‘Type/ Iguala, Guerrero. Höge./ Elytroleptus scabricollis Bates / Elytroleptus scabricollis Bates /Sp. figured/Tr.E.Soc.1892. 92-90.’ [see Remarks section below]. Paralectotype. (here designated) Elytroleptus scabricollis (Muséum national d’Histoire naturelle, Paris, sex unknown), photograph of specimen seen, labels obscured.

Diagnosis. This species is distinguished from all other species of Elytroleptus by the following combination of characters: 1) elytral margins subparallel, greatest width <1.5 × humeral angle width, 2) pronotum lacking longitudinal lines of dense pubescence, 3) pronotal and elytral pubescence long and erect, and 4) elytral punctures decreasing in diameter medially to basally. This species most closely resembles E. luteus and can be separated by the elytral punctures decreasing in diameter medially to basally and apically along with the presence of distinct pronotal calli. Additionally, males of E. luteus possess pronotal gland pores whereas males of E. scabricollis lack this character.

Description: Male. TL 6.0– 11.9 mm, GW 2.0– 3.7 mm. Body elongate, subparallel, dorsoventrally flattened.

Head. HL 0.4–0.8 mm, HW 1.1–1.6 mm, DBE 0.5–0.9 mm, DBA 0.5–0.6 mm. Testaceous except apices of mandibles, supraorbital area, and venter piceous. Finely punctate with short, sparse, suberect to erect, testaceous pubescence; gular region glabrous; rugose posterior to lower eye lobe. Antennal tubercles slightly raised, subtriangular, and separated by approximate width of four antennal sockets. Genal apices generally rounded, width ½ × height. Eyes moderately large, finely faceted, lower lobe with about 27 facets at greatest height; integument length, antennomeres IV–VI subequal, antennomeres VI–X decreasing in length, antennomere XI subequal to IV– VI and moderately appendiculate.

Thorax. PL 1.2–2.2 mm, PW 1.3–2.5 mm. Pronotum piceous, width slightly greater than length; apical width subequal to basal width, lateral margins slightly angulate, widest medially. Pronotal disc shining, punctate, with long, erect, testaceous pubescence arising from punctation; punctation on shining areas shallow, individual punctures moderate and varying in diameter and shape, majority not strongly delimited; pronotal disc flat to slightly convex; sides impressed in dorsal aspect, margin apparently elevated; 3 calli present, 2 moderately to slightly raised, anterolaterad to center (one on each side), 1 moderately raised, medial, slightly apical to pronotal basal margin. Pro-, meso-, and metasternum black, shining, with sparse, long, erect, testaceous setae. Scutellum piceous, small, subtriangular, length subequal to width, medially impressed, with short, moderate black pubescence.

Wings. EL 4.4–8.9 mm. Elytron basal 3/5 yellow, apical 2/5 piceous, margin irregular. About 4.2 × PL, width at humeral angles about 1.1 × PW. Elytron subparallel, greatest width <1.5 × width at humeral angle. Elytron with 3 distinct costae; from suture, costa I arising from anterior margin and extending to 3/5 elytral length, costa II arising from anterior margin and extending to 4/5 elytral length, costa III arising from humeral angle and extending to 3/5 elytral length; elytron with distinct deep punctation, 4–5 punctures medially between suture and costa I, increasingly irregular, shallower apically, puncture diameter distinctly decreasing medially to basally; elytron with sparse, long, erect pubescence, one seta per puncture, pale on pale areas, black on dark areas, becoming shorter apically, outer elytral margins with pubescence more dense. Metathoracic wing completely darkly tinted.

Abdominal Sternites. Piceous, shining; finely punctate, covered in sparse, long, erect, black pubescence. Legs. Piceous, except prothoracic trochanter, femora, tibia, and tarsi testaceous. Femora and tibia covered in sparse, erect, black pubescence; tarsal pubescence recumbent and more dense. Metatibia straight, not strongly sinuate. Genitalia. Sternite VIII sides gradually tapering towards apex, lacking slightly sinuate areas, often with slight concavity medially. Tergite VIII gradually tapering towards apex, lacking sinuate areas, often with slight concavity medially.

Female. TL 7.0– 12.6 mm, GW 5.2–9.5 mm, HL 0.5–0.9 mm, HW 1.2–1.7 mm, DBE 0.6–1.0 mm, DBA 0.4– 0.7 mm, PL 1.3–2.2 mm, PW 1.4–2.5 mm, EL 5.2–9.5 mm. As male, except antennae extending only to 1/5 elytral length; antennomeres V–XI less strongly serrate; antennomere XI less strongly appendiculate.

Intraspecific variation. Head integument coloration varies from above description to entirely piceous except labrum, clypeus, lower frons, and triangular area on vertex. The pronota vary greatly in coloration with some individuals entirely ferrugineous, some with a dorsal subquadrate ferrugineous area, some with two subcircular ferrugineous areas, some with two ferrugineous longitudinal lines. Some females with scutellum ferrugineous. Pronotal calli vary in visibility. Legs vary from above description to entirely testaceous.

Remarks. Bates originally described this species based on two specimens, one is currently housed in The Natural History Museum, London and the other is in the Muséum national d’Histoire naturelle, Paris. The specimen in London was examined during this revision and is hereby designated as the lectotype. The specimen in Paris was examined only through photographs during this revision and was seen to have a red “ Holotype ” label, though Bates never designated the specimen as such. The Paris specimen is designated as a paralectotype in this revision and the holotype label is therefore inappropriately placed on this specimen. It is mentioned here to avoid any future confusion in regards to this specimen’s type status.

Phylogenetic relationship. This species is sister to E. luteus supported by the mixture of large and shallow punctation on the pronotum (Characters 7) and the homoplasious character of the elytral punctation larger and deeper medially than basally (Character 18) ( Figs. 31 , 32 ).

Distribution. Guatemala (El Progreso, Zacapa), Mexico (Chiapas, Guerrero, Jalisco, Mexico, Michoacan, Morelos, Nayarit, Oaxaca, Puebla , Sinaloa, Sonora), and Nicaragua (Matagalpa). Also recorded from Honduras ( Turnbow et al., 2003), but no specimens examined in this study had labels with this locality ( Fig. 38 ).

Natural history. Flight period May through August. Adults have been collected on flowers and foliage of plants in the families Euphorbiaceae ( Croton culicanensis Croizat , Jatropha curcas L., Sapium sp. ), Fabaceae ( Acacia sp. ), Flacourtiaceae ( Casearia sp. ), Loganiaceae ( Buddleia sp. ), Meliaceae ( Trichilia americana (Sessé & Moc.) , Polygonaceae ( Coccoloba sp. ), and Rutaceae ( Xanthoxylum sp. ). Specimens have also been collected at

Material examined. GUATEMALA, El Progreso: Morazan , 1 ♂, 29.v–2.vi.1989, Giesbert, E. ( FSCA) ; Estn de la Virgen , 2 ♂, 3.vi.1991, Wappes, J.E. ( ACMT) ; Zacapa: San Lorenzo , 8 ♂, 8 ♀, 3–6.vi.1989, Giesbert, E. ( FSCA) ; 1 ♂, 2 ♀, same except, ( WFBM) ; 19 ♂, 8 ♀, 1–15.vi.1991, Giesbert, E. ( FSCA) ; 8 ♂, 3 ♀, 1–10.vi.1991, Wappes, J.E. ( ACMT) ; 7 ♂, 3–6.vi.1989, Wappes, J.E. ( ACMT) ; 3 ♂, 3–6.vi.1989, Wappes, J.E. ( TAMU) ; 3 ♂, same except ( USNM) ; 1 ♂, same except 1–10.vi.1991 ( USNM) ; 1 ♂, same except, ( WFBM) ; Teculutan , 2 ♀, v.2000, Monzon, J. ( DHPC) . MEXICO, Chiapas: Arriaga , 8 ♂, 1 ♀, 23.vi.1987, Giesbert, E. ( FSCA) ; 2 ♂, 1 ♀, 18–26.vi.1987, Wappes, J.E. ( ACMT) ; 2 ♂, same except ( USNM) ; El Sumidero , 4 ♂, 27.vi.1990, Thomas, M.C. ( FSCA) ; Jocote , 1 ♂, 17.vi.1987, Wappes, J.E. ( TAMU) ; Ocozocoautla , 1 ♂, 22.vi.1987, Giesbert, E. ( FSCA) ; Guerrero: Chilpancingo , 1 ♂, 17.vii.1984, Cope, J. ( DHPC) ; 1 ♂, 24.vi.1983, Dozier, B.K. ( FSCA) ; Iguala , 1 ♀, 5.vii.1987, Anderson, R. ( TAMU) ; 5.vii.1987, 1 ♀, Kovarik, Schaffner ( MAIC) ; Rio Mexcala , 2 ♂, 6.viii.1965, Nelson, G.H. ( EMEC) ; 4 ♂, same except ( FSCA) ; 2 ♂, same except ( ACMT) ; Xochipala , 7 ♂, 1 ♀, 18.vii.1984, Carroll, Schaffner, & Friedlander ( TAMU) ; 1 ♂, 14.vii.1985, Jones & Schaffner ( TAMU) ; 3 ♂, 13.vii.1985, Jones & Schaffner ( TAMU) ; 2 ♂, 18.vii.1985, Woolley, J.B. ( TAMU) ; Zumpango del Rio , 1 ♀, 18.vii.1983, Chemsak, J. & Michelbacher, A. & M. ( EMEC) . Jalisco: Chamela , 6 ♀, 7–15.vii.1987, Chemsak, J. & Linsley, E.G. & J.M ( EMEC) ; 1 ♀, 8–16.vii.1985, Chemsak, J., Katsula, H., & Michelbacher, A. & M. ( EMEC) ; 3 ♀, 14–22.vii.1992, Chemsak, J. ( EMEC) ; 2 ♀, 10–20.vii.1985, Giesbert, E. ( FSCA) ; 16 ♂, 7–15.vii.1987, Chemsak, J. & Linsley, E.G. & J.M. ( EMEC) ; 1 ♂, 9–19.vii.1993, Wappes, J.E. ( USNM) ; 1 ♂, 20.vii.1993, R.L. Westcott ( RLWE) ; La Huerta , 1 ♀, 15.vii.1993, R. L. Westcott ( RLWE) ; Melaque , 1 ♀, 10.vii.1987, Chemsak, J. & Linsley, E.G. & J.M. ( EMEC) ; 1 ♀, 15–17.vii.1992, Chemsak, J. ( EMEC) ; Pian de Barrancas , 1 ♂, 8.vii.1963, Parker, F.D. & Stange, L.A. ( EMEC) ; Tomatlan , 3 ♂, 6 ♀, 13.vii.1985, Giesbert, E. ( FSCA) ; Mexico: Temescaltepec , 1 ♀, vii.1932, Hinton, H.E. & Usinger, R.L. ( EMEC) ; Michoacan: Aquila , 1 ♂, 13.vii.1984, Carroll, Schaffner, & Friedlander ( TAMU) ; Morelos: Alpuyeca , 1 ♂, 2 ♀, 3.vii.1951, Evans, H.E. ( EMEC) ; 1 ♂, 1 ♀, 3.vii.1951, Hurd, P.D. ( EMEC) ; 1 ♀, 27.vi.1951, Hurd, P.D. ( EMEC) ; 1 ♂, 27.vi.1951, Evans, H.E. ( EMEC) ; Contlalco , 1 ♂, 16.vii.1999, R. L. Westcott ( RLWE) ; Yautepec , 3 ♀, 2 ♂, 13.vii.1963, Parker, F.D. & Stange, L.A. ( EMEC) ; Nayarit: Acaponeta , 1 ♀, 4.vii.1963, Parker, F.D. & Stange, L.A. ( EMEC) ; Ahuacatlan , 1 ♀, 18–22, vii.1951, Hurd, P.D. ( EMEC) ; Jesus Maria , 1 ♂, 2 ♀, 5.vii.1955, Malkin, B. ( EMEC) ; Oaxaca: El Camaron, 1 ♀, 14.vii.1971, Clark, Murray, Hart, & Schaffner ( TAMU) ; Juchitan , 3 ♂, 3 ♀, 5.vii.1955 ( EMEC) ; Matias Romero , 1 ♂, 24–25.v.1969, Bright, D. & Campbell, J.M. ( CNC) ; Tehuantepec , 14 ♂, 4 ♀, 8.vii.1955, Giuliani, D. ( CASC) ; 2 ♂, 2 ♀, 27.vii.1963, Doyen, J. ( EMEC) ; Totolapan , 20.vii.1987, 1 ♂, 3 ♀, Kovarik, Schaffner ( MAIC) ; Zopilote , 1 ♀, 5.vi.1987 ( DHPC) ; Puebla: Acatlan , 1 ♂, 19.vii.1955, Vaurie, P. & C. ( AMNH) ; Tehuitzingo , 2 ♂, 2 ♀, 29.vi.1961 ( EMEC) ; 1 ♂, 3.vii.1953 ( EMEC) ; Sinaloa: Choix , 1 ♂, 25.vii.1969, Sears, T.A., Gardner, R.C., & Glaser, C.S. ( UCD) ; Culiacan , 1 ♀, 21.vii.1973, Giesbert, E. ( FSCA) ; Elota , 8 ♂, 2.vii.1963, Parker, F.D. & Stange, L.A. ( EMEC) ; Guamuchil , 12 ♂, 2 ♀, 7.viii.1964, Powell, J. ( EMEC) ; 13 ♂, 7.viii.1964, Chemsak, J.A. ( EMEC) ; Mazatlan , 3 ♂, 1 ♀, 27.vii.1964, Chemsak, J.A. ( EMEC) ; 1 ♂, 31.vii.1972, Chemsak, J.A. & M.A. & Michelbacher, A. & M. ( EMEC) ; 1 ♂, 1.viii.1972, Chemsak, J.A. & M.A. ( EMEC) ; 1 ♂, 24.vii.1964, Chemsak, J.A. ( EMEC) ; 1 ♂, 1 ♀, 24–29.vii.----, Howden, H.F. ( CNC) ; 2 ♂, 2 ♀, 5–7.viii.1964, Howden, H.F. ( CNC) ; 1 ♀, 27.vii.1964, Howden, H.F. ( CNC) ; 1 ♂, 1 ♀, 25.vii.1973, Chemsak, J.A., Linsley, E.G. & Michaelbachers ( EMEC) ; 1 ♂, 5 ♀, 4.viii.1983, Giesbert, E. ( FSCA) ; 1 ♀, 4.vii.1984, McCleve, S. & Jump, P. ( TAMU) ; 4 ♂, 31.vii.1964, Mason, W. R.M. ( CNC) ; 1 ♂, 31.vii.1983, Giesbert, E. ( FSCA) ; 2 ♂, 6.viii.1983, Giesbert, E. ( FSCA) ; Sanalona , 1 ♀, 24.vii.1952, Lattin, J.D. ( EMEC) ; Venodio , 2 ♀, 27.vi.1918, Van Dyke ( EMEC) ; 1 ♂, 17.vi.1918, Kusche, A. ( USNM) ; Sonora: Alamos , 1 ♀, 21.vii.1960, Loomis, R.B. & Maris, J. ( EMEC) ; 1 ♂, 30.vii–9.viii.1957, Westcott, R.L. ( EMEC) ; 1 ♂, 2 ♀, same except, ( RLWE) ; 2 ♂, 1 ♀, 9.viii.1957, R.L. Westcott ( RLWE) ; Cerro Prieto , 5 ♂, 24.vii.2008, R. L. Westccott ( RLWE) ; Minas Nuevas , 1 ♂, 1 ♀, 7.viii.1952, Vaurie, C. & P. ( AMNH) ; 5 ♂, 5 ♀, same except ( EMEC) ; Navajoa , 2 ♀, 13.viii.1959, Nutting, W.L. & Werner, F.G. ( EMEC) ; San Bernardo , 2 ♂, 15.vii.1935 ( EMEC) ; Yecora , 1 ♂, 1 ♀, 18.vii.2005, Swift, I. ( ISPC) ; Cotaxtla , 1 ♀, 29.vi.1962 ( EMEC) ; Cuernavaca , 1 ♀, ( USNM) ; Tepic , 1 ♀, 24.vi.1940, Saylor, L.W. ( EMEC) ; 1 ♂, 4.vii.1932, Hinton, H.E. & Usinger, R.L. ( EMEC) ; 1 ♂, vii.1932, Hinton, H.E. & Usinger, R.L. ( EMEC) . NICARAGUA, Matagalpa: 1 ♀, 28.v.2005, Van den Berghe, E. ( DHPC) .

Figures

FIGURE 31. Three of six most parsimonious trees retrieved from phylogenetic analysis of Elytroleptus (L = 59, CI = 50, RI = 75). Numbers above branches are characters and numbers below branches are character states. Characters are optimized for

FIGURE 32. Strict consensus for six most parsimonious cladograms resulting from cladistic analysis of Elytroleptus. Numbers above branches are Bremer support values.

FIGURE 38. Distribution map for Elytroleptus rufipennis, Elytroleptus scabricollis, and Elytroleptus similis.

FIGURES 16–18. Dorsal habitus of Elytroleptus rufipennis (LeConte) (16), Elytroleptus scabricollis Bates (17), and