Temnocerus niger, Hamilton, 2010

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 26

Temnocerus niger , new species

( Fig. 29, 30 , 72 , 91 )

Type locality. Costa Rica, Heredia, La Selva Biological Station.

Type depository. National Institute of Biodiversity, Costa Rica ( INBC)

Type specimens. Holotype male and allotype with the following label data: Costa Rica, Heredia Pr: La Selva Biol. Sta., 3 km S. Pto.Viejo, 10 o 26’N 84 o 01’W, 25-vii-1996, Mimosa pigra, H. A. Hespenheide.

Description. Color and pubescence: Body black throughout. Pubescence consisting of inconspicuous short, fine, reclinate brownish setae. Size: Male (n=1) 2.3 × 0.8 mm; Female (n=1) 2.5 × 0.9 mm. Head subquadrate, about as long as wide, moderately punctured; interspaces minutely granulose; frons twice as wide as rostral base; eyes large, strongly protuberant. Rostrum.33 times longer than head, slightly arcuate, apically depressed, laterally punctured, slightly widened apically; mid-dorsal apex smooth, shiny; mid-dorsal base with short shallow channel; Antenna longer than rostrum, inserted at basal 1/4 of rostrum; scape and funicular segment 1 ovoglobose, subequal; funicular segments 2-5 narrowed, more cylindrical, subequal; segments 6 and 7 shorter more robust than 2-5; club abrupt, basal club segment longer than middle or terminal segment, narrowed to base; middle segment rectangular, wider than long; terminal segment bluntly acuminate. Pronotum longer than wide, subcylindrical, densely punctured; interspaces smooth, shiny, faintly granulose. Scutellum small, subrectangular, wider than long, with setigerous punctures. Elytra twice as long as pronotum, widest near middle; humeri simple, strial punctures deeply impressed, distinct throughout, only becoming slightly smaller beyond middle; intervals slightly raised, with single row of setigerous punctures; interspaces between striae with single setigerous puncture. Thoracic pleura and sterna with densely set with coarse setigerous punctures. Abdominal ventrites moderately set with setigerous punctures.

Distribution. Specimens have been collected only at the La Selva Biological Station in the Costa Rican province of Heredia ( Fig. 91 ).

Etymology. The specific epithet is in reference to the overall black color of this species.

Comments. Only a single male and female of this species were found in the study material. They are distinguished by the overall black color and short basi-rostral channel. The aedeagus ( Fig.72 ) has a nearly parallel-sided median lobe with the pedon apex sharply truncate. The tectum is spearhead-shaped. The tegminal cap piece is narrowly finger-like with the pigmented knob-like apex bearing a cluster of divergent setae. Endophallic bands are short and weakly crescent shaped.

Figures

Figure 23-34. Heads of Temnocerus species, frontal view, male left and female right. 23-24) T. mexicanus n.sp., holotype and allotype. 25-26) T. michoacensis n.sp., holotype and allotype. 27-28) T. minutus n.sp., holotype and allotype. 29-30) T. niger n.sp., holotype and allotype. 31-32) T. oaxacensis n.sp., holotype and allotype. 33-34) T. obrieni n.sp., holotype and allotype.

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.