Dihammaphora fosterorum, Clarke, 2015

Clarke, Robin O. S., 2015, Bolivian Cerambycinae: new anthophilous species (Coleoptera, Cerambycidae), Insecta Mundi 2015 (453), pp. 1-22 : 11-13

Dihammaphora fosterorum sp. nov.

Fig. 16

Description of holotype. Male, length 6.00 mm. Color of head and pronotum rufous-chestnut, sides of pronotum duskier; elytra paler, somewhat ochreous-chestnut; underside black (except apical margin of prosternum); antennae black and chestnut. Front legs orange (tarsi chestnut), middle legs dark chestnut (femoral peduncles and apex of tibiae slightly paler, tarsi black), hind leg peduncle black with chestnut base, clave sepia.

Surface ornamentation of clypeus, frons and vertex with rugose, large punctures embedded in matrix of dense micropunctures. Pronotum with scattered setae anteriorly, towards base denser and brassy in color; densely punctured (the details hidden by pubescence), somewhat uneven (with transverse depression just anterior to rather prominent latero-basal gibbosities). Elytra clothed with dense, short, recumbent, brassy colored pubescence; surface details hidden by minute, thick hairs; but appears to be densely punctured, with 6–7 rows of non-seriate, small punctures. Underside almost entirely covered by short, recumbent, grey pubescence (very dense and silver colored on mesosternum). Antennae sparsely pubescent basally, denser apically.

Sturcture. Head with antennal tubercles separated by about twice width of scape, these rounded, but somewhat projecting laterally. Antennae ten-segmented, rather robust, passing middle of elytra at middle of antennomere IX. Scape (0.50 mm) pyriform and rather robust, with rugose, dense, small punctures. Antennomeres III–V subcylindrical, weakly widened at apex, III and IV (0.4 mm) slightly shorter than V (0.45 mm); VI (0.50 mm) widening from middle to moderately tumid apex; VII and VIII as long as V; VII widening from base to slightly tumid apex; IX (0.40 mm), X (0.65) fusiform with constriction at middle, as broad as IX, 1.62 longer than III and longer than all other segments. Prothorax 1.22 longer than wide, widest at middle (0.95 mm); vase-shaped (rather abruptly widened for middle third, attenuate and almost straight to front margin, sinuate to base); width of base about 1.4 narrower than humeri; latero-basal gibbosities rather prominent. Elytra 2.9 longer than width across humeri; weakly sinuous at sides, narrowest at middle; distinctly depressed at base and on disc. Dorsal costa strong and almost reaching apex. Margins entirely, but weakly asperate (denser at apex). Elytral apices broadly tumid, somewhat obliquely rounded. Legs with peduncle of all femora distinctly bicarinate and sulcate. Metafemora just failing to reach apex of elytra. Metatibiae moderately bisinuate (viewed laterally). Apex of protibia without tooth laterally. First segment of metatarsus (0.40 mm) as long as the following two combined.

Male variation. The single male paratype hardly differs from the holotype, but pronotum 1.3 longer than wide; and elytra 3.1 longer than width across humeri. Golden pubescence on front tibia much reduced.

Female. In one paratype general color paler, and more ochreous than in male, and asperations on sides of elytra slightly stronger. In both paratypes antennae and legs almost entirely pale chestnut. Antennae passing middle of elytra at middle of antennomere X; X 1.67–1.75 longer than III. Pronotum 1.2–1.3 longer than wide; and elytra 2.7–3.0 longer than width across humeri. Metatibiae more strongly bisinuate since apical third rather abruptly curved. First segment of metatarsus (0.4 mm) distinctly shorter than II+III (0.6 mm).

Measurements (mm). 2 males / 2 females, total length 6.00–6.60/4.80–6.50; length of pronotum 1.25–1.50/1.05–1.35; width of pronotum 1.05–1.15/0.85–1.05; length of elytra 3.75–4.05/3.00–4.10; width of humeri 1.30/ 1.10–1.35 in both male specimens.

Diagnosis. This species, with ten-segmented antennae, is closest to Dihammaphora auricollis Martins, 1981 , from which it can be separated by the following male characters. In D. fosterorum antennae black and chestnut, middle and hind legs not entirely black (in D. auricollis antennae and legs usually entirely black); in D. fosterorum dense black patch covering most of prosternum and extreme sides of pronotum (in D. auricollis prosternum usually concolorous, or partially clouded dusky, or at most with paired, small, black vittae adjacent to coxal cavities); in D. fosterorum antennomere XI about 1.6 longer than III (in D. auricollis about 1.9 longer); in D. fosterorum prothorax vase-shaped, rather abruptly widened at middle, distinctly attenuated to front margin, strongly sinuate to basal margin, and about 1.2 longer than wide (in D. auricollis prothorax almost cylindrical, and about 1.4 longer than wide); in D. fosterorum apical margin of elytra broadly tumid and rather rounded (in D. auricollis apical margin not tumid and sinuate-truncate); in D. fosterorum apical third of protibia densely covered with golden pubescence mesally (in D. auricollis sparsely pubescent towards apex); in D. fosterorum metatarsomere I about as long as the following two combined (in D. auricollis 1.26– 1.29 longer than II+III).

Type material. Holotype male: BOLIVIA, Santa Cruz , 18°09’S /63°49’, 1,300 m, Achira, on whiteflowering Acacia , 25.XI.2004 ( MNKM). Paratypes: BOLIVIA, Santa Cruz : 18°08’S /63°53’, 6–8 km

NNE Samaipata, Rd to La Yunga de Mairana , female, 6.II.2013, Lingafelter & Garzon col. ( USNM) ; 4–5 km N. Achira, Rd to Amboro , male, 12–13.XII. 2000, Wappes & Dozier col. ( RCSZ) ; Florida, Mataral , 2000 m, female, XII.1984, L.E. Peña col. ( ACMT) .

Etymology. This species is named in appreciation of Sue and Cole Foster, who provided transport to the type locality, and for their generous contribution of equipment for our work on the Bolivian Cerambycidae .

Figures

Figures 16–22. Dihammaphora species. 16) Dihammaphora fosterorum sp. nov., male holotype, dorsal habitus. Figures 17-18. Dihammaphora densiserrata sp. nov. 17) male holotype, dorsal habitus. 18) female paratype, dorsal habitus. Figures 19-20., Dihammaphora espinotibiae sp. nov. 19) male holotype, dorsal habitus. 20) female paratype, dorsal habitus. 21) Dihammaphora densiserrata sp. nov. male holotype, protibia. 22) Dihammaphora espinotibiae sp. nov. male holotype, protibia.