Anchonidium unguiculare ( Aubé, 1850 )

Germann, Christoph, 2020, On Anchonidium Bedel, 1884 sensu stricto, with descriptions of two new species from the Iberian peninsula (Coleoptera, Curculionidae: Molytinae), Revue suisse de Zoologie 127 (1), pp. 27-41 : 32-37

Anchonidium unguiculare ( Aubé, 1850)

Figs 1 A-J; 2D-F; 3I-L; 4F, H, J-K; 6.

Material examined

France

2 ex.; St. Martin, Landes; coll. G.A.K. Marshall ( NHML). – 1 ♂; Morlaix ; leg. R. Hervé, coll. G. Frey ( NMB). – 1 ex.; Gallia , La Ferta [ La Fertais ]; coll. Frivaldsky ( HNHM). – 2 ♀; Morlaix ; leg. E. Hervé ( NMB). – 2 ex.; Sos , Bauduer [roundish yellow and green labels] ( MHNG). – 1 ex.; Gallia ; leg. Merkl, coll. Reitter ( HNHM). – 1 ex.; Gallia mer. [meridionale] ; coll. Reitter ( HNHM). – 1 ex.; Sos ; coll. Reitter ( HNHM). – 1 ex.; Gallia ; coll. Reitter ( HNHM). – 1 ex.; Blain, Loire-Inf.; Revelière , coll. Cn. Tournier ( MHNG). – 1 ex.; Sos ; Bauduer, coll. Cn. Tournier ( MHNG). – 1 ex.; Bordeaux ; leg. G. Tempère, coll. V. Kodrić ( MHNG). – 3 ex.; Beg-Meil , 09.1903; coll. Odier ( NHML). – 3 ex.; Huelgoat , Finistère, 10.1904; coll. Odier ( NHML). – 1 ♂; env. de Bordeaux , 04.05.1908; coll. A. Mathey ( NMBE). – 1 ♀; Bordeaux , 04.05.1908; coll. A. Mathey ( NMBE). – 1 ex.; Tresses, Env. de Bordeaux , 3.[19]36; leg. G. Tempère, coll. V. Kodrić ( MHNG). – 1 ex.; Cambes, Gironde , 09.04. [19]37; leg. E. Giraud, coll. H. Perrot in coll. M. Curti ( MHNG). – 1 ex.; Cave Oloron , B.P. 17.07.[19]48; coll. J. Ochs ( MHNG). – 1 ex.; Oxybar [cave close to Camou Cihique] B. P. X.[19]48; coll. J. Ochs ( MHNG). – 1 ex.; Ronceraux [Roncesvalles] , Pyr. Occ. Esp. , 26.04.[19]74; ( MHNG). – 1 ex.; Licq-Athéray, Bass. Pyr. , 20.09.197; leg. M. Curti ( MHNG). – 1 ex.; Bager d’Olozon , Oloron, B. Pyr. , 21.09.1979; leg. M. Curti ( MHNG). – 1 ex.; Bénéjacq , Bass. Pyr., 23.09.1979; leg. M. Curti ( MHNG). – 1 ex.; Corvèze , Donzence, N Brive , 08.09.1984; leg. J. Martens (cLB). – 1 ex.; Corrèze , Beynat , 400 m, 13.- 31.07.1992; leg. Schawaller (cLB). – 1 ex.; Hossegor , Landes, 23.07.1993; (cJM). – 3 ex.; Cassagnes-Bégonhès, ravin de la Barthette , 500 m, 03.10.2016, tamisage de mousse dans un bois de feuillus; leg. G. Alziar (cGA). – 10 ex.; Cassagnes-Bégonhès , ravin de la Barthette , 570 m, 04.10.2017, tamisage de mousses dans un bois de feuillus divers; leg. G. Alziar (cGA). – 1 ex.; Cassagnes-Bégonhès , au-dessus du Céor , bois 550 m, 18.11.2018, sous les Festuca; leg. G. Alziar (cGA). – 5 ♂, 3 ♀; Brittany, Ille-et Vilaine depart. , 1.5 km E St.-Coulomb, 3 km W Cancale, wood along rivulet, N48°40’23” W1°53’22”, 34 m, 25.08.2015; leg. C. Braunert // sifting (cCB). – 1 ♀; Brittany, Ille-et Vilaine depart. , 3.5 km NW St.-Coulomb., 3 km NE Rothéneuf Pointe du Meinga, 48°42’6”N, 1°56’12”W, 34 m, 27.08.2015, shore cliff; leg. C. Braunert // Sifting (cCB). – 1 ♀; Brittany, Illeet Vilaine depart, 1.5 km N St.-Coulomb, 4.5 km NW Cancale Anse Margot, 48°41’25”N, 1°54’26”W, 2 m, shore, cliff; leg. C. Braunert // Sifting (cCB). – 3 ex.; Cassagnes-Bégonhès , ravin de la Barthette , 500 m, 03.10.2016, tamisage de mousse dans un bois de feuillus; leg. G. Alziar (cGA). – 10 ex.; Cassagnes-Bégonhès , ravin de la Barthette , 570 m, 04.10.2017, tamisage de mousses dans un bois de feuillus divers; leg. G. Alziar (cGA). – 1 ex.; Cassagnes-Bégonhès , au-dessus du Céor , bois 550 m, 18.11.2018, sous les Festuca; leg. G. Alziar (cGA) .

Great Britain

Apparently only known from a single locality, namely Gweek in the extreme south-west of the island (comm. Max Barclay ): 4 ♂, 3 ♀; W. Cornwall, Gweek , SW 708260, 10.8.2008; leg. R.G. Booth // Winkler bag extraction of woodland litter (cCG, NHML) .

Spain

1 ex.; Caboalles , leg. Paganetti, coll. J. Fodor ( NHHM). – 1 ex.; Caboalles ; leg. Paganetti ( NHHM). – 1 ♂; Sierra de Moncayo ; leg. H. Franz ( NHMP). – 1 ♂, 3 ex.; Monte Aa b. Ruente, Prov. Santander ; leg. H. Franz ( NHMP – 2 ♂, 2 ♀; Manzanal ; leg. Paganetti, coll. G. Frey ( NMB). – 6 ♂, 1 ♀; Ponferrada ; leg. Paganetti, coll. G. Frey ( NMB). – 1 ♂; Branuelas ; leg. Paganetti, coll. G. Frey ( NMB). – 2 ♂; Algesiras [Algeciras] Andal. ; leg. Breit, coll. G. Frey ( NMB). – 2 ♂, 1 ♀, 7 ex.; Caboalles ; leg. Paganetti ( HNHM). – 1 ♂; Ponferrada ; leg. Paganetti ( HNHM). – 1 ♀ Cancas Ast[uria] ; leg. Paganetti ( NMB). – 1 ♀; Algesiras [=Algeciras], Andal. [= Andalucia]; leg. Breit ( NMB). – 2 ♀; Ponferrada ; leg. Paganetti ( NMB). – 7 ex.; Ponferrada ; leg. Paganetti ( NHMP). – 27 ex.; Ponferrada ; leg. Paganetti ( SDEI). – 2 ex.; Ponferrada ; coll. Künnemann ( SDEI). – 6 ex.; Cancas Ast[uria] ; leg. Paganetti ( SDEI). – 2 ex.; Ponferrada ; leg. Paganetti, coll. J. Ochs ( MHNG). – 4 ex.; Ponferrada ( Paganetti ); Coll. Perrot ( MHNG). – 40 ex.; Ponferrada ; leg. Paganetti ( HNHM). – 5 ex.; Cancas Ast. [Asturias]; leg Paganetti, coll. J. Fodor ( HNHM). – 2 ex.; Cancas Ast. [Asturias]; leg Paganetti ( NHHM). – 1 ex.; Asturien [Asturias]; Getschmann 1879, coll. Reitter ( NHHM). – 3 ♂; W-Pyrenäen , Mte Alzo , B. Tolusa , 14.03.1951; leg. H. Franz, coll. G. Frey ( NMB). – 1 ♂; Villafurfe de Carriedo, Santander , 13.07.[19]54; leg. S.V. Paris (cLB). – 1 ex.; Coruña, dint., Sobrado Montes, Laguna , 15.6. 1989, 500 m; leg. M. Meregalli ( NHML). – 1 ex.; Oviedo, Sierra Navaliego, 400 m, Rio Cerezal , 20.06.1989; leg. M. Meregalli ( NHML). – 1 ex.; Coruña, dint., Carballo, 400 m, Silva, 15.06.1989; leg. M. Meregalli ( NHML). – 1 ex.; Santander , P. to S. Glorio vers. N., 1200 m, 22.06.1989; leg. M. Meregalli ( NHML). – 1 ♂, 1 ex.; Santander, Cab. de la Sal , Rio Bayones , 350 m, 24.06.1989; leg. M. Meregalli ( NHML). – 2 ex.; Pontevedra , 4 km S Moscoso, Frenza , 14.06. 1989, 400 m; leg. M. Meregalli ( NHML). – 1 ex.; Pontevedra, Caldas R. , Cequeril , 350 m, 14.06.1989; leg. M. Meregalli ( NHML). – 2 ex.; Lugo, Pontenovo, Vilaboa , 400 m, 17.06.1989; leg. M. Meregalli ( NHML). – 1 ♀; Oviedo, Sierra de Bobla-Bres , 500 m, 16.06.1989; leg. M. Meregalli ( NHML). – 2 ex.; Oviedo, Tineo , 5 km N Pola de Allande, 800 m, 16.06.19; leg. M. Meregalli ( NHML). – 2 ♂, 19 ex.; Cantabria, Alto Campoo , W Reinosa, 04.06.[19]91, 1400 m, Eichenwald [sifting]; leg. L. Zerche (cLB). – 1 ♂; Oviedo, Tuiza, Strasse zum Puerto de Cubilla, 1400 m, 08.06.[19]91, Spritzmoos; leg. L. Zerche (cLB). – 1 ex.; Vitoria, Sra de Cantabria , 850 m, 12.06.1991; leg. M. Meregalli ( NHML). – 1 ex.; Monforte, Sta Peña Reconde , Parada das Montes , 06.06.1991; leg. M. Meregalli ( NHML). – 2 ex.; Vitoria, Mt. de Olivarri , 05.07.1993; leg. M. Meregalli ( NHML). – 1 ex.; Bilbao, Rio Ceberio , 05.07.1993; leg. M. Meregalli ( NHML). – 18 ex.; Cádiz , Andalusien, ca. 10 km W Los Barrios, Gesiebe unter Korkeichen , 210 m, 36°11’ N 5°34’ W, 10.02.1999; leg. L. Zerche (cLB, SDEI). – 2 ♂; Andalusien, Cádiz, Canuto Garganta del Medio , 15 km NO Alcalá de los Gazules, Bachufer , Streu von Rhododendron ponticum , 450 m, 36°32’N, 5°38’W, 02.02.1999; leg. L. Zerche (cLB, SDEI). – 2 ♀; Galicia, Edreida , 18 km NE Viana do Bolo, Sierra do Eixe , 1200 m, 05.08.2002, 42°16’33 N, 6°55’31” W, Ginster auf Fels [sifting]; leg. C. Germann (cCG). – 2 ♂, 2 ♀; Cádiz, Los Barrios , 10.11.2009; leg. J. L. Torres // cribando en el suelo (cCG, cJT). – 2 ♂, 1 ♀; Cádiz, Los Barrios , 10.04.2012; leg. J. L. Torres // cribando bajo Quercus canariensis (cCG, cJT). – 1 ♂; Sta Marina , 43.494°N, 8.047°W, 15.04.2013; leg. T. Struyve ( CPH). – 1 ♂; Galicia, Pontevedra prov., Uma , 42.159°N, 8.421°W, 19.05.2013; leg. T. Struyve ( CPH) .

Portugal:

1 ♀; Serra do Gerés , Portelo do Leonte / Portelo do Homem, 10.06.1997; leg. Th. Assmann (cLB). – 13 ex.; Minho , Covas , Caminha , 02.-17.10.[19]99; leg. J. Messutat (cJM). – 1 ♂; Minho , Covas , Caminha , 02.- 17.10.[19]99; leg. J. Messutat (cLB). – 3 ex.; Minho , Covas, Caminha , 05.06.[20]03; leg. J. Messutat (cJM) .

Morocco:

1 ex.; 7 km S Essaouira, 24.12.2000; leg. J. Messutat (cJM). – 2 ♂, 5 ♀; 10 km W Sebta, 3 km N Benzou, Q. suber, Steineiche , Pistacia , 330 m, N35°53’06” W5°24’06”, 25.12.2001; leg. C. Germann (cCG). – 2 ♀; Rif Mountains, 10 km W Ketama (=Issaguen), 1600 m, Zedern, Laurus [sifting], 34°57’40” N, 4°40’51” W, 26.12.2001; leg. C. Germann (cCG). – 1 ♂; Jbel Tazzeka, 20 km SW Taza, 1650 m, Eiche, N34°04’15”, W4°10’50”, 05.01.2002; leg. C. Germann (cCG). – 1 ♂, 1 ♀; Chefchauen, Rif Mts. , Tleta-des-Beni-YdarCheki , 15 km SW Zinat, 570 m, mixed oak forest, leaf litter sifted, 14.03.2003; leg. D.W. Wrase (cIW). – 7 ex.; S Ksar-es-Seghir , 278 m, N35°45’16” W 05°30’49”, Pistacia , Quercus suber , 09.05.2009; leg. L. Behne (cLB, SDEI). – 19 ex.; W Sebta , vir. Birez , 337 m, N35°53’04” W05°24’08”, Quercus suber , Smilax , Arbutus , 09.05.2009; leg. L. Behne (cLB, SDEI).

Redescription

Size: 2.2-3.6 mm. Body color auburn. Head hidden in pronotum, eyes oval, flat and small, comprising six to eight ommatidia, eyes lateral of rostral base, below middle of rostral diameter ( Fig. 1G ). Rostrum constricted at base, about 3.5 times longer than wide at level of insertion of antennae ( Fig. 1A ), parallel sided along basal 2/ 3 in dorsal view, widened from antennal insertion to tip, buckled downwards at basal constriction in lateral view ( Fig. 1D ), ventral side straight to tip, dorsal side weakly bowed. Dorsum of rostrum tricarinate in basal half, middle carina diverging behind antennal insertion, and converging before, thus opening a spindle-shaped groove. Sides of rostrum coarsely punctuate, tip of rostrum glabrous and with fine punctuation. Vestiture consisting of yellowish recumbent bristles, these standing in rows on dorsum of rostrum ( Fig. 1A ), pointing towards spindle-shaped groove along carinae, longer recumbent bristles beard-like below lower edge of antennal scrobes ( Figs 1B, G ). Antennal insertion behind last fourth of rostral length, scrobes lateral, straight pointing to lower margin of eye ( Fig. 1D ), reaching ventral side of rostrum ( Fig. 1B ).

Antennae with scape a bit longer than one third of rostrum, parallel sided from base to last third, from there on culled. Antennal funiculus with 7 segments, first one twice as long as wide, second 1.5 longer than wide, following ones wider than long, steady broadened towards club ( Fig. 1I ). Club with jar-shaped first segment ( Fig. 1I ), as long as last four funicular segments together, following two hardly visible ones short and flat, club densely covered with whitish hairs.

Pronotum L/W: 1.0-1.1times about as long as wide, roundish, strongly constricted behind fore margin, only weakly at hind margin, with V-shaped impression on upper side, and a longitudinal carina, which ends before hind margin in a deep impression ( Fig. 1F ). Pronotum densely and coarsely punctuate, vestiture consisting of yellowish recumbent bristles. Scutellum hardly visible, punctiform. Ventral side at fore margin with a faint and shallow rostral notch or channel. Procoxae close to each other, separated by a thin interspace ( Fig. 1C ). Mesocoxae separated by half their diameter, mesosternal process trapezoid ( Fig. 1E ), coarsely punctuate; Metacoxae separated from mesocoxae by hardly their diameter, and twice their diameter between themselves ( Fig. 1J ); length of metasternum hardly as long as diameter of mesocoxae or as long as two of the coarse punctures in line; in middle on first ventrite with roundish-oval groove due to confluent 2 or 3 huge punctures ( Fig. 1J ).

Elytra L/W: 1.4-1.5, elongate, parallel sided, widest in middle, no humeral calli, apterous ( Figs 2 D-F). 10 striae very coarsely and regularly punctuate, counting 10-12 punctures from elytral base to declivity, intervals narrow, elevated in shape of prominent ridges, uneven ones higher elevated and somewhat wider. Vestiture with same bristles as pronotum and rostrum, bristles in one row on even intervals and 2-3 irregular rows on uneven ones.

Ventral side abdomen ( Fig. 1J ): Five glabrous ventrites, first and second ones fused but separated by a suture fainted in middle; first and second ventrites coarsely punctuate with sparse yellowish appressed hairs, directed backwards; following two similarly narrow, with one row of bowed hairs, last ventrite finely punctuate with more dense standing appressed yellowish hairs.

Legs: unarmed, strong, set with yellowish appressed hairs; tibiae with a fringe of orange stiff spines at apex; inner angle of tibiae with strong uncus directing inwards ( Fig. 1H ), tibiae with three subsequent strong tarsomeres, third one bilobed, fourth minute, narrow, claw segment narrow, longer than second and third combined, claws free.

Genitals, male: penis tube shaped, dorso-ventrally flattened, bowed in lateral view, apex blunt in dorsoventral view, almost rectangular or conical with rounded sides, in lateral view apex pointed, apex at dorsal side, just before weakly sclerotized window, with fringe of several straight appressed setae ( Figs 3 I-L).

Female: ventrite VIII (or spiculum ventrale) with rhomboidal plate, feebly sclerotized in middle ( Fig. 4C ), apodeme 1.5 the length of plate with anchor-shaped apex. Spermatheca c-shaped with broad and rounded cornu, base bottle shaped with hardly noticeable ramus and nodulus ( Fig. 4F ). Gonocoxite of ovipositor triangular, weakly sclerotized, styli pointed ( Fig. 4H ). Bursal atrium remarkably strong sclerotized ( Figs 4 J-K), cab-shaped with small bubble at apex.

Figures

Fig. 1. Anchonidium unguiculare, morphological details. Scale bars 0.25 mm. (A) Dorsum of rostrum. (B) Underside rostrum with beard like bristles and conjoint antennal grooves.(C) Ventral view on pronotum with faint and shallow rostral notch and narrow standing procoxae. (D) Lateral view on rostrum. (E) Mesocoxae and mesosternal process. (F) Pronotum surface. (G) Dorsofrontal view on head and pronotum. (H) Right protarsus and apex of protibia. (I) Right antenna with bowl shaped club.

Fig. 2. Habitus of Anchonidium spp. Scale bars 1 mm. (A) A. braunerti sp. nov., Portugal, Serra do Estrela, male. (B) A. spathiferum sp. nov., ventral side; the arrow indicates missing groove between metacoxae in comparison with A. unguiculare. (C) A. spathiferum sp. nov., Portugal, Serra de Monchique. (D) A. unguiculare, Spain, Cadiz. E. ditto Spain, Alto Campoo. (F) A. unguiculare, Great Britain, Cornwall.

Fig. 3. Male genitalia of Anchonidium and similar genera (dorsal and lateral view). Scale bars 0.25 mm. (A-B) A. spathiferum sp. nov., Serra da Estrela. (C-D) A. spathiferum sp. nov., Serra do Marão. (E-F) A. braunerti sp. nov., Serra de Monchique. (G-H) A. braunerti sp. nov., Serra de Monchique. (I-J) A. unguiculare, Morocco Sebta. (K-L) A. unguiculare, Spain, Pontevedra. (M- N) Caulomorphus wittmeri. (O-P) Anchonidium caucasicum. (Q-R) Pseudoanchonidium tauricum.

Fig. 4. Female genitalia, scale bars 0.25 mm. A. spathiferum sp. nov., Serra da Estrela: (A) Ventrite VIII. (D) Spermatheca. (G) Gonocoxite of ovipositor. (L-M) Sclerotized bursal atrium (dorso-ventral and lateral view). A. braunerti sp. nov., Serra do Monchique: (B) Ventrite VIII. (E) Partly broken spermatheca. (ovipositor and bursal atrium are missing). A. unguiculare, France, St.-Coulomb: (C) Ventrite VIII. (F) Spermatheca. (H) Gonocoxite of ovipositor. (J-K) Sclerotized bursal atrium (dorso-ventral and lateral view) A. spathiferum sp. nov.: (I) Dissected female genitalia.Abbreviations: te = tergite VIII; ve = ventrite VIII; ov = ovipositor; in = intesticals; bu = strongly sclerotized bursal atrium; sp = spermatheca. A. caucasicum: (N-O) Sclerotized bursal atrium. Caulomorphus lederi: (P-Q) Sclerotized bursal atrium.