Holubia gabonica, López-Guerrero, 1921

López-Guerrero, Irma, 1921, Figs. 30 – 33. Attavicinus monstrosus. 30 in Comparison of Mouthpart Morphology of Three Species of Mexican Oniticellini (Coleoptera: Scarabaeidae: Scarabaeinae) in Relation to Their Trophic Habits, The Coleopterists Bulletin 24 (4), pp. 560-566 : 564

Holubia gabonica , new species

( Fig. 2)

Description of Female Holotype. Length 11.8 mm, width 4.9 mm, widest on dorsal surface across base of pronotum, width across second visible abdominal ventrite subequal to pronotal width; elongate, subcylindrical, flattened above; shining aeneous; surface moderately, shallowly punctate; pubescence of moderately long, adpressed yellowish setae, concentrated laterally on pronotum, in broad, longitudinal band on anterior half of elytra and in three irregular, ‘‘zig zag’’ fasciae on posterior half of elytra. Head: narrowed, produced, bilobed between eyes on frontovertex; eyes large, inner margins diverging dorsally; ocular grooves extend along inner margins to dorsal-most point, confluent with supraantennal grooves; frontoclypeus compressed, carinate between antennal cavities, emarginate distally, depressed laterally for basal antennomeres in repose; gena with margin obtusely angulate. Antennae: antennomere 2 elongate, narrowly fusiform, subequal to 3 + 4, 5–10 broadly serrate; 11 oblong, curved. Pronotum: 1.7 times as wide as long, widest at base; anterior margin feebly arcuate; posterior margin bisinuate on either side of broad subtruncate prescutellar lobe; basal angles feebly acute, rounded; lateral margins subparallel to middle then narrowing, arcuate to anterior margin; disk flatly convex along entire length, depressed laterally, with short prelateral carinae on either side in apical 1/2. Scutellum: triangular, longer than basal width. Elytra: narrower than pronotum, widest at humeri; sides subparallel past humeri, narrowing slightly to basal 1/2, widening to before apical 1/3, then attenuate to obliquely truncate, separately rounded apices; epipleuron separated from disk by carina which extends posteriorly to metepimeron; disk with base depressed between humeri and scutellum, otherwise feebly transversely convex. Thoracic ventrites: prosternum with broadly produced, medially arcuate mentonierre; process with rounded lateral lobes, rounded attentuate apex; metasternum triangularly emarginate basally; metepimeron partially visible; metacoxal plate with posterior margin very feebly concave, lateroapical angle roundly acute. Legs: femora narrowly fusiform; tibiae slender, feebly arcuate on external margin; metatibiae with sparse setal comb for almost entire length; tarsomere 5 longer than 1–4 together, claws bifid. Abdomen: pygidium emarginate around apically projecting tooth, visible between elytral apices; ventrites: suture between ventrite 1 and 2 feebly indicated laterally, other sutures transverse; lengths of 1 + 2 subequal to 3 + 4 + 5; 5 with transversely carinate plate. Genitalia: ovipositor of ‘‘coraebine’’ type, with strongly setose ventral brushes (for discussion of coraebini ovipositors, see Bellamy 1988 a:416, figs. 28, 61, 87; 1988 b:104, figs. 9–11).

Specimens Examined. Holotype ♀ ( NMPC): Bas Ogooni , Gabon, Favarel.

Etymology. The epithet gabonica is chosen for the country of origin.

Comments. This second species of the Holubia differs from the type species by virture of elytral punctation, color, pubescent pattern, the configuration of the pronotal basal angles and geographical distribution. Holubia kheili is greenish in color; the dorsal pubescence slightly more expansive on the elytra with the posterior fasciae slightly longer; the elytral punctation is coarse, but punctures separate rather than confluent and rugose; the posterolateral pronotal angles are strongly acute and the known distribution is limited to Congo. I have examined the holotype and compared it directly to H. gabonica .