Temnocerus pseudaeratus, Hamilton, 2010

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 30-31

Temnocerus pseudaeratus , new species

( Fig. 39, 40 , 77 , 92 )

Type locality. Mexico, Michoacan, Hwy. 15.8 mi NW Quiroga

Type depository. Charles W. O’Brien collection ( CWOB)

Type specimens. Holotype male and Allotype with the following data: Mexico , Mich., Hwy. 15.8 mi NW Quiroga, 7700‘, 8 Aug. 1982, CW & L O’Brien & G Wibmer ( CWOB) . Paratype data as follows: MEXICO: 2 females, Mich. [Michoacan], Hwy. 15, 21 mi E. Morelia, 15 Aug 1982, 7000’, CW & L O’Brien & G. Wibmer ; 1 female, Mich. , 8 mi W Patzcuaro, 14 Aug. 1982, 7,600’, CW & L O’Brien & G. Wibmer ; 1 male, Qto. [Queretaro], km 8 Neblina-Agua Zarca , 23-6-1998, G. Ortega, L. Ceruantes ; 1 male, Oax. , 43 km SE Nochixtlan, Nov. 10, 1977, on pine & oak, A. N. Garcia Andrete ; 1 female, Tam. [Tamaulipas], Hwy 101, 14 mi SW Cd. ( Cuidad ) Victoria , 23 July 1982, 5,000’, CW & L O’Brien & G. Wibmer ; 1 female, Chis. [Chiapas], SE San Cristobal Las Casas , vi-5-1974, 7,500’, CW & L O’Brien & Marshall ; 1 female, Chiapas, 2 mi NW Pueblo Nuevo LLU Biol. Sta., vii-13-1965, Collector G.H. Nelson ( CWOB). 1 male, Mexico, Chiapas, 13 mi n. Ocozocoautla , July 10, 1971, Clark, Murray, Hart, Schaffner ; 1 female, Mexico, Puebla, 3 mi SE Izucar de Matamoros , July 20, 1984, JB Woolley ( TAMU) .

Description. Color and pubescence: Body coppery metallic above with a faint rosy luster and bluishblack to blackish below; Pubescence conspicuous, composed of fine whitish reclinate setae; setae long and more conspicuous on metapleura. Size: Male (n = 3) 2.2 × 0.8 mm to 2.3 × 0.9 mm; (Female (n = 7) 2.1 × 0.9 mm to 2.5 × 1.0 mm. Head quadrate, moderately punctured; punctures small, round, shallowly impressed; interspaces minutely granulose; frons wide,.50 times wider than rostral base; eyes large strongly protuberant. Rostrum.33 times longer than head, basal 3/4 minutely granulose; sides parallel in dorsal view, distinctly depressed from antennal insertions to apex. Antennae as long as rostrum, inserted at basal 1/4 of rostrum; scape and funicular segment 1 subequal, ovoglobose; funicular segments 2-5 narrow, subequal, weakly clavate; segments 6-8 short, 7 and 8 bead-like; basal and middle club segments subequal; terminal club segment small, rounded at apex. Pronotum longer than wide, widest near middle; densely set with large setigerous punctures; interspaces narrow, minutely granulose. Elytra elongate, more than twice as long as pronotum, widest just behind middle; humeri simple; strial punctures distinct throughout, deeply impressed; interspaces weakly convex, with single row of setigerous punctures; interspaces between striae with single setigerous puncture. Thoracic pleura and sterna densely and coarsely punctured. Abdominal ventrites with moderate to dense setigerous punctures.

Distribution. Specimens are recorded from the following Mexican states of Chiapas, Michoacan, Oaxaca, Puebla, Queretaro and Tamaulipas ( Fig. 92 ).

Etymology. The specific epithet is in reference to the similarity of this species to the North American Temnocerus aeratus (Say) .

Comments. Adults are easily recognized by the coppery metallic luster, coarse dense punctation and whitish pubescence. The rostrum in lateral view is distinctly tapered and depressed in the apical half (“needle-nosed”) in both sexes and the dorso-basal half of the rostrum is minutely granulose as in the interspaces of the head. The aedeagus ( Fig.77 ) has a nearly parallel-sided median lobe with the sides only slightly narrowed apically. The pedon apex is sharply truncated. The tectum is spatulate in shape. The tegminal cap piece is finger-like with the knob-like pigmented apex bearing a cluster of setae. Endophallic bands are linear, relatively long and distinctly pigmented.

Plant association. Unknown.

Figures

Figure 35-46. Heads of Temnocerus species, frontal view, male left and female right. 35-36) T. oculatus (Sharp). 37-38) T. potosi n.sp., holotype and allotype. 39-40) T. pseudaeratus n.sp., holotype and allotype. 41-42) T. pueblensis n.sp., holotype and allotype. 43-44) T. pusillus (Sharp). 45-46) T. regularis (Sharp).

Figure 59-86. Aedeagal tegmen and median lobe of Temnocerus species, dorsal view, 64X. 59) T. abdominalis (Voss). 60) T. chiapensis n. sp. 61) T. chiriquensis (Sharp). 62) T. confertus (Sharp). 63) T. cyaneus n. sp. 64) T. ellus n. sp. 65) T. giganteus n. sp.; 66) T. guatemalenus (Sharp). 67) T. guerrerensis n. sp. 68) T. herediensis n. sp. 69) T. mexicanus n. sp. 70) T. michoacensis n. sp. 71) T. minutus n. sp. 72) T. niger n. sp. 73) T. oaxacensis n. sp. 74) T. obrieni n. sp. 75) T. oculatus (Sharp). 76) T. potosi n. sp. 77) T. pseudaeratus n. sp. 78) T. pueblensis n. sp. 79) T. pusillus (Sharp). 80) T. regularis (Sharp). 81) T. rostralis n. sp. 82) T. rugosus n. sp. 83) T. salvensis n. sp. 84) T. tamaulipensis n. sp. 85) T. thesaurus (Sharp) 86) T. yucatensis n. sp.

Figure 91-94. Distribution of Temnocerus species. 91) T. rugosus, red; T. obrieni, black; T. oaxacensis, blue; T. niger, green. 92) T. pseudaeratus, black; T. potosi, blue; T. cyaneus, green; T. oculatus, red. 93) T. pueblensis, red; T. pusillus, blue; T. regularis, black; T. salvensis, green. 94) T. tamaulipensis, red; T. thesaurus, blue; T. yucatensis, black.