Temnocerus chiapensis, Hamilton, 2010

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 6-7

Temnocerus chiapensis , new species

( Fig. 5, 6 , 60 , 87 )

Type locality. Mexico, Chiapas, 10 km NW Chicoasen

Type depository. Canadian Museum of Nature, Ottawa, Canada ( CMNC)

Type specimens. Holotype male with the following data: Chiapas , Mex. (190 m), 10 km NW Chicoasen, 15 SEP 1990, ex. Haematoxylon brasiletto , 532 W, T. Eager, P.G. da Silva ( CMNC) ; Allotype with same data as holotype except (200 m), 7 km NW Chicoasen , 16 SEP 1990, 548N. Paratype data as follows: MEXICO: 1 male, Chiapas, 15 km W Ocozocoautla , 18 JUL 1990, (800 m), 318 AN, ex Haematoxylon brasiletto, P.G. da Silva & T. Eager ; 1 male, Chiapas, 15 km W Ocozocoautla , 18 JUN 1990, (800 m), 142 E, ex Haematoxylon brasiletto, T. Eager & P.G. da Silva ; 1 female, Chiapas, 15 km W Ocozocoautla , 20 AUG 1990, (800m), 427 AA, ex Haematoxylon brasiletto, T. Eager & P.G. da Silva ; 1 female, Chiapas, 10 km NW Chicoasen , 23 AUG 1990, (190 m), 445Q, ex Haematoxylon brasiletto, T. Eager & P.G. da Silva ; 1 female, Chiapas, 15 km W Ocozocoautla, 20 AUG 1990, (800 m), 427 W, ex Haematoxylon brasiletto , 1 female, Chiapas, 7 km NW Chicoasen , 22 AUG 1990, (200 m), 436 R, ex Haematoxylon brasiletto, P.G. da Silva & T. Eager ; 1 female, Chiapas, 15 km NW Ocozocoautla, 14 Sep 1990, (800 m), ex. Haematoxylon brasiletto, P.G. da Silva & T. Eager (CMNC) . 1 female, Chis [Chiapas], 13 mi W Tuxtla Gutierrez, Aug. 1, 1974, 3,300’, O’Brien & Marshall ; 1 female, Chiapas, Hwy 190, 8 km E. Tuxtla Gutierrez, Aug 9, 1975, 410 m, A.N. Garcia-Aldrete & B. Garcia Gonzalez (CWOB) .

Description. Color and pubescence: Body blackish throughout; pronotum with faint brassy luster. Pubescence inconspicuous, composed of short fine reclinate setae. Size: Male (n = 3) 1.5 × 0.6 mm to 1.8 × 0.8 mm; Female (n = 8) 1.6 × 0.7 mm to 1.8 × 0.8 mm. Head quadrate, as long as wide, moderately punctured; punctures round, moderately impressed; interspaces minutely granulose eyes large, oval, moderately protuberant. Rostrum short, only as long as the head, only slightly widened beyond antennal insertions, moderately to densely punctured, in lateral view apically depressed, with distinct median dorsal channel in basal 1/3; channel minutely granulose. Antennae distinctly longer than rostrum, inserted near basal 1/3 of rostrum; scape and funicular segment 1 ovoglobose, subequal; funicular segments 2-4 narrow, cylindrical; segments 5-7 shorter more robust; 7 and 8 bead-like; club segments subequal; terminal segment bluntly acuminate. Pronotum longer than wide, widest near base, densely punctured; interspaces minutely granulose. Scutellum quadrate, as long as wide, minutely punctured. Elytra about twice as long as pronotum, widest at apical 1/3; humeri simple; striae distinct throughout, moderately impressed; intervals weakly raised, with single row setigerous punctures; strial interspaces with single setigerous puncture. Thoracic pleura and sterna with dense setigerous punctures. Abdominal ventrites weakly concave through middle, with sparse to moderately set small round setigerous punctures.

Distribution. All specimens examined are from Chiapas, Mexico ( Fig. 87 ).

Etymology. The specific epithet is in reference to the Mexican state of Chiapas.

Comments. The adults are small, blackish, and with a faint brassy luster above. They have a distinct dorsal channel in the basal 1/3 of the rostrum and a densely punctured head and pronotum. The aedeagus ( Fig. 60 ) has a short median lobe with a narrowly pointed blade-like pedon and a narrowly pointed tectum. The tegminal cap piece is narrow and finger-like with the small pigmented apex bearing a cluster of very short setae. The tectum is spearhead-shaped. Endophallic bands are short, linear and weakly defined. The aedeagus of this species and that of T. pueblensis indicate a close relationship.

Figures

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.