Dihammaphora brasileira, Napp & Mermudes, 2010

Napp, Dilma Solange & Mermudes, José Ricardo M., 2010, Revision of the genus Dihammaphora Chevrolat (Coleoptera, Cerambycidae). I. Species with 11 - segmented antennae, Journal of Natural History 44 (13 - 14), pp. 869-889 : 879-880

Dihammaphora brasileira sp. nov.

( Figure 1G )

Description

Male. Head, prothorax and prolegs orangish, concolorous. Antennae orangish-brown. Elytra from brown to almost orangish. Mesosternum orangish-brown to black. Metasternum and urosternites black. Peduncles of intermediate and hind legs, orangish-brown to black. Vertex, frons, clypeus, genae, margin of lower eye lobes and mandibles densely clothed by silky, yellowish-white pubescence, obscuring integument.

Antennae reaching apical third of elytra. Scape scabrous, subpyriform to subcylindrical, yellowish pubescent. Segments from 3, very finely, densely punctuate, clothed by whitish or yellowish pubescence gradually denser to distal segments. Segments 3–5 cylindrical, not expanded at apex; 3 as long as scape, little longer than 4, and subequal to 5; 6 longest, slightly expanded at apex; 7–10 decreasing in length, subcylindrical, slightly expanded at apex; 11 subcylindrical, as long as or little shorter than 3.

Prothorax slightly sinuate at sides before and behind middle, barely attenuate apically. Pronotum with silky, yellowish pubescence organized in longitudinal vittae on each side from apex to base; latero-basal gibbosities prominent and subacuminate; disk barely depressed before and behind middle, with some erect setae, lacking pubescence. Sides of prothorax with sparse, silky, yellowish pubescence. Prosternum with whitish pubescence, denser at middle and on intercoxal process; with a large, roughly rectangular, smooth, glabrous patch on each side in front of procoxae. Remainder of ventral surface clothed by somewhat elongate, whitish or olivaceous pubescence.

Elytra subparallel at sides. Disk depressed, more so at base, dorsal costa prominent from base almost to apex. Densely, moderately coarsely punctuate; punctures deep, not seriate, separated by less than one diameter, becoming finer and shallower at apical third; a single row of punctures between dorsal and lateral costae, except at base and apex with two rows. Densely clothed by silky, whitish to yellowish pubescence almost obscuring punctures; without setae. Margins very weakly asperate, the asperities far from each other. Elytral apices truncate to rounded-truncate.

Peduncles of femora shallowly sulcate, pubescent, with asperate punctures and whitish setae sparsely throughout. Metafemora surpassing elytral apices by about half the length of club. Metatibiae straight. First segment of metatarsi 1.3 times as long as the following two combined.

Measurements (mm) male/female. Total length, 5.3–6.8/5.2–7.5; prothorax length, 1.3–1.6/1.3–1.9; maximum width of prothorax, 0.9–1.1/0.8–1.2; elytral length, 3.6– 4.5/3.6–5.2; humeral width, 1.1–1.4/1.0–1.6.

Variability

Antennae, principally the distal segments, orangish-brown. Meso- and metafemora black to brownish, the peduncles even orangish-brown; profemora with peduncles orangish to black. Pubescence of the head and prothorax yellowish to whitish. Three examples with the vertex brownish.

Type material

Holotype male, from Brazil, Espírito Santo: Baixo Guandu , 26–30 November 1971, C. Elias col. ( DZUP) . Paratypes, same locality as holotype: one female, 9–14 November 1979, 13 males , nine females, 26–30 November 1971, seven males, five females, 15–21 December 1971, C. Elias col. ( DZUP); Bahia: Condeúba, one male, January 1976, S. Souza col. ( DZUP); Minas Gerais: Passos, one female, October 1961, C. Elias col. ( MNRJ); Pedra Azul, two males, four females, November 1972, Seabra and Oliveira col. ( MNRJ) .

Remarks

Dihammaphora brasileira sp. nov. is similar to D. gracicollis by having the head and prothorax orangish, elongate, subcylindrical, antennae with distal segments not shortened, and elytra with dense, not seriate punctures. The new species differentiates by the elytra with prominent dorsal costae from base to apical third, densely clothed by whitish to olivaceous pubescence partially obscuring punctures; pubescence of pronotum forming a longitudinal vitta on each side; and by the third antennal segment longer than both scape and segment 4. In D. gracicollis , the elytra have no dorsal costae and are sparsely, whitish pubescent; the pubescence of the pronotum is evenly distributed not forming vittae, and the third antennal segment is shorter than both scape and segment 4. The males of the new species have large, smooth, glabrous areas on the prosternum, but males of D. gracicollis were not available, which prevented the drawing of comparisons.

Etymology

From Portuguese, brasileiro, an inhabitant of Brazil.

Figures

Figure 1. Dihammaphora species. Dihammaphora falsa sp. nov., (A) male paratype, (B) lateral view of prothorax showing median apical projection of prosternum, (C) unciform projection of procoxae. (D) Dihammaphora uncinata sp. nov., male holotype. (E) Dihammaphora scutata Gounelle, syntype female (?) (reproduced from slide). (F) Dihammaphora gracicollis Chevrolat, female. (G) Dihammaphora brasileira sp.nov., male paratype.