Temnocerus cyaneus, Hamilton, 2010

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 11-13

Temnocerus cyaneus , new species

( Fig. 11, 12 , 63 , 92 )

Type locality. Costa Rica, Heredia, 16 km SSE La Virgen

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

Type specimens. Holotype male with the following data: COSTA RICA: Prov. Heredia, 16 km SSE La Virgen , 10 o 16’ N 84 o 05’ W, 21 Marzo 2001, 1050- 1150 m, 11/M/03/043, ALAS transect [Malaise], Project ALAS INB0003220553, INBio-OET ( INBC) . Allotype with the following data: PANAMA: 1 female, Chiriqui Prov., 2 km W Cerro Punta , 8 o 51’ N 82 o 36’ W, 25-29.v.77, 1720 m, H & A Howden ( CMNC) . Paratype as follows: 1 female, Chiriqui Prov., 5 km NW Hornito, 08 o 41’08’’N 82 o 15’17’’W, el 3160 ft, 7-viii-1999, JB Woolley 99/088 ( TAMU).

Description. Color and pubescence: Body distinctly shiny bluish-black throughout; antennae and extremities brownish-black. Pubescence composed of inconspicuous sparse, very short, reclinate brownish setae. Head and pronotum with few or no obvious setae. Size: male (n = 1) 2.3 × 0.8 mm; female (n = 1) 2.5 × 1.0 mm. Head sub-quadrate, about as long as wide; punctures small, round, widely spaced; interspaces minutely granulose; frons about twice as wide as width of rostral base; eyes large, oval, moderately protuberant. Rostrum about.33 times longer than head, gradually widened from antennal insertions to apex, moderately punctured, with shallow minutely granulate channel at mid-dorsal base; width at apex about 3/4 as wide as frons. Antenna inserted just in front of basal 1/4 of rostrum, about 1/3 longer than rostrum; scape and funicular segment 1 ovoglobose, subequal; funicular segments 2-3 narrow, sub-equal, weakly clavate; segments 4-7 subequal, like 2 and 3 but slightly shorter; club abrupt, basal & middle club segments subequal, narrowed basally; terminal segment slightly longer and narrower than basal or middle segment, acuminate. Pronotum longer than wide, widest just behind middle, with weak anterior constriction, moderately punctured; punctures small, round, shallowly impressed; interspaces minutely granulose. Elytra about twice as long as pronotum, widest just behind middle; humeri simple; striae rounded, moderately impressed, becoming somewhat smaller posteriorly; interspaces between striae with single small setigerous or non-setigerous puncture; intervals smooth, shiny, with a single row of very small punctures; some punctures with setae. Thoracic pleura and sterna moderately punctured; punctures round, medium sized. Abdominal ventrites moderately to densely punctured; punctures small, round; lateral interspaces minutely strigate & granulate.

Distribution. The holotype is from Costa Rica and the allotype from Panama ( Fig. 91 ). Etymology. The specific epithet is in reference to the distinct bluish black body of this species.

Comments. Adults of this species are similar to adults of T. confertus (Sharp) . Both are strongly bluish black and similar in size. However, they differ in punctation. The head punctures in T. cyaneus are very small and more widely spaced than those in T. confertus and the pronotal punctures are small, round and not dense while in T. confertus they are larger, more deeply impressed and dense. The female rostrum is long and mostly smooth and shiny in both species but it is more widened apically in T. cyaneus . The aedeagus ( Fig. 63 ) has a short tapered median lobe with the pedon apex truncated and thinly rebordered. The tectum is broadly spearhead-shaped and bluntly pointed. The tegminal cap piece is finger-like with a distinctly pigmented knob-like apex bearing a cluster of short setae. Endophallic bands are short and linear.

Plant association. Unknown. The holotype was taken in a Malaise trap along an ALAS project transect in Costa Rica.

Figures

Figure 11-22. Heads of Temnocerus species, frontal view, male left and female right. 11-12) T. cyaneus n.sp., holotype and allotype. 13-14) T. ellus n.sp., holotype and allotype. 15-16) T. giganteus n.sp., holotype and allotype. 17-18) T. guatemalenus (Sharp). 19-20) T. guerrerensis n.sp., holotype and allotype. 21-22) T. herediensis 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.