Ptychoderes virgatus Fåhraeus, 1839, Fahraeus, 1839

Mermudes, José Ricardo M. & Napp, Dilma Solange, 2006, Revision and cladistic analysis of the genus: Ptychoderes Schoenherr, 1823 (Coleoptera, Anthribidae, Anthribinae, Ptychoderini), Zootaxa 1182 (1), pp. 1-130: 42-44

publication ID

http://doi.org/ 10.11646/zootaxa.1182.1.1

publication LSID

lsid:zoobank.org:pub:56758062-FF9C-448F-98AE-92C3EC71022C

persistent identifier

http://treatment.plazi.org/id/A02F87F5-FFB5-F948-1730-FD83FDC2FA7F

treatment provided by

Felipe

scientific name

Ptychoderes virgatus Fåhraeus, 1839
status

 

Ptychoderes virgatus Fåhraeus, 1839  

Figs. 32 View FIGURES 24–36 , 84 View FIGURES 70–84 , 98, 112 View FIGURES 85–112 , 126 View FIGURES 113–126 , 181–184 View FIGURES 177–195 , 218 View FIGURES 215–220 , 247 View FIGURES 239–250 , 253 View FIGURES 251–262 , 264 View FIGURES 263–264. 263

Ptychoderes virgatus Fåhraeus   in Schoenherr, 1839: 157; Jekel, 1849: 10 (list.); Jekel, 1855: 64; Gemminger & Harold, 1872: 2722 (cat.); Bovie, 1906: 220 (cat.); Preudhomme, 1906: 32 (cat.); Wolfrum, 1929: 6 (cat.); Rheinheimer, 2004: 10 (cat.).

Ptychoderes virgata   [sic]; Blackwelder, 1947: 725 (cat.).

Male. Vestiture ( Fig. 218 View FIGURES 215–220 ): pale dorsal vitta with dense, appressed, whitish scales intermingled with decumbent brownish to pale­brownish scales denser on elytral interstriae 1, 2 and 4. Pygidium with predominance of brown scales. Ventral surface and legs with dense, appressed, yellowish scales, sparser on pro­ and mesosternum. Sides of prosternum, below lateral carina, with a continuous dark vitta of blackish­brown scales feebly narrowed between pleural suture and posterior margin of prothorax. Sides of mesosternum with narrow glabrous vitta. Mesepimera, episterna and sides of metasternum with shallow setigerous punctures, each provided with a brownish scale. Outer surface of meso­ and metafemora with two spots of blackish­brown scales.

Rostrum 1.2–1.3 times as long as wide across base, weakly swollen at each side of apical impressions. Distance between scrobe and eyes subequal or shorter than maximum width of eye. Sides barely depressed between two vestigial carinae, upper carina more conspicuous. Scrobes careniform at dorsal and basal margins; extension vanishing with a deep distal pit. Mentum with moderately coarse, confluent punctures; shallowly grooved at apical margin and strongly depressed at sides. Gula with sparse, fine punctures. Frons with weakly prominent carinae.

Antennae ( Fig. 218 View FIGURES 215–220 ) either short, reaching elytral basal third to slightly longer than body, exceeding elytral apex by 2–3 segments. Segments IV to IX, depressed and deeply grooved, X grooved at base; II to IV thickening, increasing in length; V–VI subequal; VII slightly longer than each VI and VIII; IX at least 3 times as long as X; XI one third longer than X (II = 0.7–1.1; III = 0.9–2.0; IV = 1.1–2.9; V = 1.2–3.3; VI = 1.0–3.3; VII = 1.2–3.6; VIII = 1.0–3.2; IX = 1.2–2.7; X = 0.4–0.7; XI = 0.8–1.2).

Prothorax ( Figs. 32 View FIGURES 24–36 , 218 View FIGURES 215–220 , 247 View FIGURES 239–250 , 253 View FIGURES 251–262 ) as long as or longer than wide, almost parallelsided, distinctly narrower at anterior margin. Pronotal depression from shallow to slightly deep, divided by a weakly prominent, more or less transverse tubercle reaching lateral margins of depression. Pronotum rugose throughout, more so on tubercle and near lateral carinae, less so inside depression. Antebasal carina interrupted at middle (at least twice width of carina), oblique towards lateral carina. Lateral carina slightly sinuous. Secondary carina straight, narrowly interrupted at middle, almost reaching second lateral carina. Laterobasal carina reaching posterior margin of prothorax. Prosternum ( Fig. 253 View FIGURES 251–262 ) raised, with dense, deep, coarse punctures; antecoxal furrow deep, wide, anterior margin curved, without median projection. Mesosternum with moderately coarse, shallow, irregularly sparse punctures, and a deep, irregularly transverse impression near intercoxal process. Intercoxal process of mesosternum longitudinally impressed, not swollen at lateral and apical margins, with evident lateroapical projections. Elytra 2.1–2.2 times as long as wide across humeri, depressed at basal two thirds, convex at apical third; basal gibbosities weakly prominent; surface rugose from base to middle of elytra, more so at base, less so near suture. Sides subparallel, barely convergent apically from basal third. Anteapical tubercles absent, interstriae 3 to 9 barely swollen. Wings without radial cell.

Abdomen. Intercoxal process of ventrite I deeply grooved; sex patch absent. Ventrite V not depressed on disk, slightly emarginated at apex. Pygidium slightly wider than long, depressed, with an elongate groove to fit elytra, rounded­truncate at apex.

Terminalia. Tergite VIII ( Fig. 84 View FIGURES 70–84 ) as wide as long, strongly convergent at apical two thirds, rounded at apex; sternite VIII ( Fig. 98 View FIGURES 85–112 ) with sides convergent, apical margin rounded with well defined lateral lobes, apodeme vestigial; apodeme of sternite IX ( Fig. 112 View FIGURES 85–112 ) 3.5 times as long as arms. Tegmen ( Fig. 126 View FIGURES 113–126 ) rounded at apex. Aedeagus ( Figs. 181–184 View FIGURES 177–195 ) without arc between apodemes; tectum ( Fig. 182 View FIGURES 177–195 ) curved at proximal margin, acuminate at apex; pedon ( Figs. 181, 183 View FIGURES 177–195 ) with body slightly curved, thickened apically; apodemes straight, oblique at proximal 1/5. Internal sac ( Fig. 181 View FIGURES 177–195 ) slightly longer than aedeagus, spiculated medially, denser ventrally, lateral membrane with pigmented rods; antemedian sclerites narrow, weakly pigmented ( Fig. 184 View FIGURES 177–195 ).

Female. Rostrum slightly shorter, 1.0–1.1 times as long as wide across base; extension of scrobe shallow. Antennae either reaching or exceeding the posterior margin of prothorax by one segment; segment IX grooved, X strongly impressed at base; II–III subequal in length; IV slightly longer than V; V to VIII subequal; IX and XI subequal and slightly longer than X (II = 0.4–0.7; III = 0.5–0.8; IV = 0.7–1.0; V = 0.6–0.8; VI = 0.5–0.7; VII = 0.5–0.7; VIII = 0.4–0.6; IX = 0.7–1.0; X = 0.4–0.5; XI = 0.7–1.0). Elytra slightly more convex. Ventrite V sparsely, minutely granulate, truncate at apex. Pygidium longer than broad, rounded at apex. Terminalia similar to that of P. jordani   ( Figs. 189–192 View FIGURES 177–195 ) differing by tergite VIII with sides subparallel, and sternite VIII emarginate at apex.

Measurements, in mm, male/female, respectively. TL = 12.7–19.7/12.3–19.7; RL = 1.9–3.2/1.2–1.6; RAW = 1.7–2.4/1.2–1.5; RBW = 1.5–2.3/1.1–1.4; HW = 1.9–3.0/ 1.8–3.0; DSO = 0.7–1.6/0.5–0.8; MLO = 1.3–1.5/1.2–1.8; PL = 3.3–5.0/3.2–5.0; PW = 3.3–4.8/3.2–4.8; EL = 8.2–12.3/7.8–13.1; EW = 3.7–5.7/3.7–5.8.

Type material

Female holotype, not examined, deposited in the Naturhistoriska Riksmuseet, Stockholm ( NHRS). Type locality: according to Fåhraeus in Schoenherr (1839), the species was based on a single female from Cayenne ( French Guiana)   .

Remarks See remarks under P. depressus   .

Distribution ( Fig. 264 View FIGURES 263–264. 263 )

FRENCH GUIANA, BRAZIL (Amapá, Rondônia, Amazonas, Pará, Mato Grosso) and BOLIVIA. Recorded to Peru by Rheinheimer (2004).

Material examined

FRENCH GUIANA. Cayenne, 1 F ( NHMB)   . BRAZIL. Amapá: Ilha de Maracá, 1 M (no date), Benton leg. (in malaise) ( INPA); Serra do Navio (assentamento), 6 M, 2 F   , X.1996, 1 M, X.1997, 1 F, X.1999, Magno leg. ( MNRJ); Porto Grande ( Nova Colina , assentamento), 1 F   , I.2001, Magno leg. ( MNRJ). Rondônia: Ouro Preto d’Oeste , 1 M   , X.1996, Magno & Becker leg. ( MNRJ). Amazonas: Rio Autaz, 1 F, Roman leg. ( BMNH); Manaus , 1 M, 1 F   , X.1957, 1 F, XI   .1957, Elias & Roppa leg., 1 F, VII.1958   , Fernandes leg. ( MNRJ). Pará : Óbidos. 1 M, 1 F, II.1923, H. C. Boy leg., 2 M, XII.1938, (collector illegible), 1 F, I.1954, Brazilino leg., 1 F, IX   .1955, Oliveira leg. ( MNRJ), 1 F, IV.1960, Dirings leg., 1 F, VIII.1968   (no leg.) ( MZSP), (Colônia Rio Branco ), 3 M, XII.1952, Teles leg., 2 M, VIII.1953, 2 M, 4 F, X.1953, Bazilino leg., 4 M, 1 F, IX   .1953, 1 M, X.1953, Oliveira leg. ( MNRJ), Jacareacanga , 1 F, XII   .1968, Alvarenga leg. ( MNRJ), Tucurui , 1 F   , I.1983, Silva leg. ( MNRJ). Mato Grosso: Diamantino (Alto Rio Arinos ), 1 M   , X.1983, Becker, Roppa & Silva leg. ( MNRJ); Sinop ( Faz. Teles ), 2 M   , X.1974, 2 M, 2 F, X.1976, Silva leg., (12°31’ S, 55°37’W, BR 163, Km 500–600, 350 m), 2 F, IX GoogleMaps   .1974, 2 M, 1 F, IX.1976 GoogleMaps   , Alvarenga & Roppa leg. ( MNRJ – MZSP); Vera   GoogleMaps (12°46’S, 55°36’ W), 1 M, 2 F, X.1973, Alvarenga & Roppa leg. ( MNRJ)   . BOLIVIA. La Paz: Reyes (Rio Beni),1 M, 1891, Balzan leg. ( BMNH)   .

NHRS

Swedish Museum of Natural History, Entomology Collections

NHMB

Natural History Museum Bucharest

INPA

Instituto Nacional de Pesquisas da Amazonia

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Anthribidae

Genus

Ptychoderes

Loc

Ptychoderes virgatus Fåhraeus, 1839

Mermudes, José Ricardo M. & Napp, Dilma Solange 2006
2006
Loc

Ptychoderes virgata

Blackwelder, R. E. 1947: 725
1947
Loc

Ptychoderes virgatus Fåhraeus

Rheinheimer, J. 2004: 10
Wolfrum, P. 1929: 6
Bovie, A. 1906: 220
Preudhomme, M. 1906: 32
Gemminger, M. & Harold, E. 1872: 2722
Jekel, H. 1855: 64
Jekel, H. 1849: 10
Schoenherr, C. J. 1839: 157
1839