Temnocerus rugosus, Hamilton, 2010

Hamilton, R. W., 2010, Central American Temnocerus Thunberg, 1815 (Coleoptera: Rhynchitidae), Insecta Mundi 2010 (128), pp. 1-42 : 36-37

Temnocerus rugosus , new species

( Fig. 49, 50 , 82 , 91 )

Type locality. Mexico, Durango, 9 mi NW La Zarca

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

Type specimens. Holotype male and allotype with the following data: Mex., Dgo. [Durango], 9 mi NW La Zarca , vii-1-1971, 6500', O’Brien & Marshall ( CWOB) . Paratype data as follows: MEXICO: 23 males and 11 females with same data as primary types ; 1 female with same data as primary types except 14 mi NW La Zarca ; 1 male and 2 females, Mexico, Dgo. , 2mi SW Yerbanis, Aug. 20, 1974, 6500', CW & L O’Brien & Marshall ; 7 males and 14 females, Mex., Chi. [Chihuahua], 5 mi NE Hidalgo del Parral , vii-1- 1971, 6000', CW O’Brien ; 1 male and 4 females, Qro. [Queretaro], 1 mi E Cadereyta, Aug. 15, 1974, 6800, CW & L O’Brien & Marshall ; 1 female, Mexico, Qro., Hwy 120, 1 mi N Cadereyta , 27 July 1982, 6800, CW & L O’Brien & Wibmer ; 1 female, Queretaro, mpio: Toliman [San Miguel Toliman?], km 46, Carreta Bernal-Toliman , 16-viii-2000, JL Cozar ; 1 male and 1 female, N. L. [Nuevo Leon], 40 mi NW Jcn [junction] Hwy 57 & 60, vi-22-1971, CW O’Brien & Marshall ; 1 female, SLP [San Luis Potosi], 16 mi S Sta. Maria del Rio , vi-29-1971, 6500', C O’Brien & Marshall ; 1 female, Dgo. , 5 mi NE Fco. [Francisco] I. Madero, 6600’, 8-20-1974, on Mimosa warnockii , C & L O’Brien & Marshall ( CWOB). 2 males and 3 females, Coah. [Coahuila], 7500’, nr. Jame, 33 mi S.E.Saltillo, vii-18-63, A.T. Howden ; 1 female, SLP [San Luis Potosi], 11.6 km E. San Luis Potosi, 1,945 m, 3.vii.87, R. Anderson, Acacia-cactus scrub, 87-1 ; 1 male, San Luis Potosi, 43.8 mi. S. San Luis Potosi, on #57, 5,600’, 8-viii-83, Acacia /cactus desert, R. Anderson ( CMNC). 1 male, Sin. [Sinaloa], 26 miles west of El Fuerte , viii-17-65, H. Burke & J. Meyer ( TAMU) .

Description. Color and pubescence: Head, rostral base, pronotum, elytra and legs beyond coxae with rosey golden to bronze metallic luster; thoracic and abdominal ventrals bluish-black; antennae reddishbrown. Pubescence of numerous fine appressed grayish setae. Size: Male (n=36) 1.9 × 0.7 mm to 2.7 × 1.1 mm; Female (n=36) 2.2 × 0.9 mm to 2.5 × 1.1 mm. Head quadrate, slightly wider at base, very densely punctured; interspaces rugose; eyes moderately protuberant. Rostrum subequal to head in length, gradually and distinctly widened from antennal insertions to apex; dorsal base rugose; mid-dorsal 2/3 smooth, shiny; lateral 2/3 distinctly punctured; in lateral view only slightly arcuate, depressed in apical 1/3. Antennae inserted near basal 1/5 of rostrum; scape and funicular segment 1 ovoglobose, subequal; funicular segments 2 and 3 narrowed, clavate, subequal in length to segment 1; segments 4 and 5 subequal, globose, slightly shorter than 2 and 3; segments 6 and 7 subequal in length to 4 and 5, more robust, beadlike; club abruptly widened; basal segment subtriangular; middle segment slightly shorter than basal segment, transverse; apical segment subequal in length to basal segment, rounded, apex broadly rounded. Pronotum longer that wide; sides weakly rounded out; widest just behind middle; with weak anterolateral constriction; very densely punctured; some punctures fused; interspaces rugose and with numerous setigerous punctures. Scutellum small, quadrate, punctured. Elytra about twice as long as pronotum, widest behind middle; humeri simple; striae distinct throughout; with a single setigerous punctures in interspace between striae; intervals weakly convex; with row of setigerous punctures. Thoracic pleura and sterna densely and coarsely punctured. Abdominal ventrites moderately punctured, weakly concave.

Distribution. Specimens were collected from the Mexican states of Chiapas, Durango, Nuevo Leon, Queretaro and San Luis Potosi ( Fig. 91 ).

Etymology. The specific epithet is in reference to the dense punctures and rugose interspaces of the head in this species.

Comments. Temnocerus rugosus is recognized by the dense punctation of the head and pronotum and the rosy golden and bronze luster of the upper surface. Sexual dimorphism is not as pronounced in this species. The male rostrum is only slightly shorter and slightly wider at the apex than in the female. Also, the eyes of the male are not distinctly larger and more protuberant in this species as they are in most other species of this genus. It is similar to Temnocerus dilatarostris (Hamilton) from North America but the apex of the aedeagal pedon and the tegminal cap piece are different. The aedeagus ( Fig. 82 ) has the short median lobe strongly tapered into a bluntly pointed blade-like pedon. The tectum is spatulate in shape. The tegminal cap piece is finger-like and the knob-like pigmented apex bears a cluster of short divergent setae. Endophallic bands are short, linear and weakly defined.

Figures

Figure 47-58. Heads of Temnocerus species, frontal view, male left and female right. 47-48) T. rostralis n.sp., holotype and allotype. 49-50) T. rugosus n.sp., holotype and allotype. 51-52) T. salvensis n.sp., holotype and allotype; 53-54) T. tamaulipensis n.sp., holotype and allotype. 55-56) T. thesaurus (Sharp). 57-58) T. yucatensis 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.