Temnocerus abdominalis ( Voss 1932 )

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 5-6

Temnocerus abdominalis ( Voss 1932)

( Fig. 2 , 3, 4 , 59 , 87 )

Type locality. Mexico

Type depository. Zoologisches Institut und Zoologisches Museum ( ZMUH). Eduard Voss collection.

Specimens examined. Holoype male with the following data: Mexico, Hoge, Cotype, Coenorrhinus (Pselaphorhynchites) abdominalis n. sp. HONDURAS: 1 male and 1 female, Honduras, La Ceiba, i-30- 1978, G.V. Manley ( CWOB). MEXICO: 12 males and 10 females, Oaxaca, 11 km SE Mitla , 22 Aug 1982, Clark and Cave ; 1 female, Oaxaca, 22 km S Oaxaca , 20 Aug 1982, Clark & Cave ; 1 male, Pue [Puebla], 2.7 km NW Petlacingo Hwy 190, 7-vii-1992, N 18 o 04’ W 97 o 58’, 1570 m, C.L. Bellamy ; 1 male, Puebla, 6 km S Acatepec , 19 Aug 1982, Clark & Cave ; 1 female, Chiapas, 30 km NW La Angostura , 14 Sept 1981, Clark & Coe ; 1 female, Puebla, 3 mi NW Petlalcingo, iii-4-72, F Parker & D Miller ; 1 female, Oaxaca, 22 km S Oaxaca , 20 Aug 1982, Clark & Cave ; 1 male, Pue [Puebla], 14 mi SE Petlalcingo, vi-1-1974, 5,800’, O’Brien & Marshall ; 1 female, Oax. [Oaxaca], 18 mi SE Tlalcolula, vi-2-1974, 6, 300’, O’Brien & Marshall ; 1 female, Mor. [Morelos], 11 mi NW Cocoyoc, Aug 14, 1974, 4500’, CW O’Brien & L Marshall ; 1 male and 3 females, Yucatan, ca. 5 km S Progreso, 26 October 1984, W.E. Clark ( CWOB). 1 female, Oaxaca, Monte Alban, 2-vii-1969, H. A. Hespenheide ( CHAH). 5 males and 3 females, Oaxaca, 5.5 mi. northeast Huajuapan de Leon , July 14, 1974, Clark, Murray, Ashe, Schaffner ; 1 male, Oaxaca, 16.1 mi. nw. Totolapan , July 21, 1974, Clark, Murray, Ashe, Schaffner ; 2 females, Oaxaca, 14 mi. n. Miahuatlan , July 16, 1974, Clark, Murray, Ashe, Schaffner ; 2 males and 4 females, Oaxaca, 10 mi. n. Miltepec, July 26, 1974, Clark, Murray, Ashe, Schaffner ; 3 males and 3 females, Oaxaca, 10 mi. n. Miltepec, July 15-16, 1971, Clark, Murray, Ashe, Schaffner ; 1 female, Mexico, Hidalgo, 2 mi. n. Zimapan , March 18, 1975, Clark & Schaffner ; 2 males and 5 females, Mexico, Puebla, 5.1 mi. sw. Tehuacan , July 27, 1974, Clark, Murray, Ashe, Schaffner ; 3 males and 2 females, Mexico, Puebla, 11.8 mi. nw. Izucar de Matamoros , July 13, 1974, Clark, Murray, Ashe, Schaffner ; 1 female, Mexico, Puebla, 13.3 mi. ne. Tehuitzingo , July 13-14, 1974, Clark, Murray, Ashe, Schaffner ( TAMU) .

Description. Color and pubescence: Body brownish-black with rosy bronze luster. Pubescence consists of short reclinate pale brownish to brownish-white setae. Size: Male (n = 34) 1.5 × 0.5 mm to 2.0 × 0.8 mm; Female (n= 38) 1.6 × 0.7 mm to 2.2 × 1.0 mm. Head quadrate, moderately punctured; punctures

small, round; interspaces minutely granulose; frons wide, about twice as wide as width of rostrum at base; eyes sub-circular, strongly protuberant. Rostrum short, only slightly longer than head, apical 1/3 only slightly depressed, moderately punctured; sides sub-parallel, slightly widened apically; mid-dorsal apical area smooth, shiny; dorsal base weakly striate and minutely granulose. Antenna inserted near basal 1/3; scape and funicular segment 1 ovoglobose; funicular segment 1 more robust than scape; funicular segments 2-4 narrowed, weakly clavate; segment 2 slightly longer than 3 or 4; segments 5-7 short, subequal, bead-like; club abrupt, basal segment and middle segment subequal in length; basal segment narrowed basally; middle segment transversely rectangular; terminal segment slightly longer and slightly more robust than basal and middle segments, broadly rounded at apex. Pronotum longer than wide, widest just behind middle, densely punctured; interspaces smooth, shiny. Scutellum small, rectangular, about twice as wide as long. Elytra about twice as long as pronotum, widest just behind middle; striae moderately impressed, distinct throughout, only slightly diminishing in size beyond middle; intervals flat, smooth, shiny, with single row of setigerous punctures; interspaces between striae with single setigerous puncture. Thoracic pleura and sterna densely punctured; punctures coarse. Abdominal ventrites densely punctured; punctures round, setigerous; setae more or less forming uniform transverse rows.

Distribution. Specimens of T. abdominalis have been taken in Honduras and the Mexican states of Chiapas, Hidalgo, Morelos and Oaxaca ( Fig. 87 ).

Comments. Adults are small with a rosy bronze luster and are easily confused with T. thesaurus . The short nearly parallel-sided rostrum, numerous uniformly aligned abdominal punctures and the strongly protuberant eyes of the male serve to distinguish it. The aedeagus ( Fig. 59 ) has a short weakly tapered median lobe with the pedon apex broadly rounded. The tectum is spatulate in shape. The cap piece of the tegmen is short and lobe-like with a small pigmented apex bearing long terminal setae. Endophallic bands are absent or only weakly defined. The aedeagus is very similar to that of T. tamaulipensis ( Fig. 84 ).

Plant association. Unknown

Figures

Figure 1-2. Temnocerus species, lateral habitus. 1) T. potosi n.sp. 2) T. abdominalis (Voss).

Figure 3-10. Heads of Temnocerus species, frontal view, male left and female right. 3-4) T. abdominalis (Voss). 5- 6) T. chiapensis n.sp., holotype and allotype. 7-8) T. chiriquensis (Sharp). 9-10) T. confertus (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 87-90. Distribution of Temnocerus species. 87) T. abdominalis, red; T. chiapensis, blue; T. chiriquensis, black; T. rostralis, green. 88) T. confertus, red; T. ellus, blue; T. giganteus, black. 89) T. guerrerensis, blue; T. guatemalenus, red; T. herediensis, black. 90) T. mexicanus, red; T. michoacensis, blue; T. minutus, black.