Achia boliviana Clark and Burke, 2007

López-Guerrero, Irma, 2007, 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. 542-550 : 548-550

Achia boliviana Clark and Burke , new species

( Figs. 5, 6 )

Description. Body ( Figs. 5, 6 ) stout; length 3.0– 3.4 mm, width 1.6–1.8 mm. Integument mostly ferruginous, darker on head, proximal portion of rostrum, pronotum, elytral interstriae 8 and 9, thoracic sterna, and femoral apices. Head, rostrum, pronotum and elytra with admixture of short, broad, pallid and darker fulvous scales and darker ferruginous to fuscous scales; lower portion of head, pleural regions of thorax and thoracic sterna with broader, densely imbricate, cretaceous scales; legs and scales on abdominal sterna with longer, cretaceous to fulvous, apically narrowed scales. Elytra ( Fig. 6 ) without discal patch; vestiture consisting predominantly of pallid fulvous scales, but scattered cretaceous scales present, and with darker ferruginous to fuscous scales on high points of basal prominence on interstria 3 and on narrow, median, irregularly diagonal band and posteromedian, horizontal, subapical band sutural ( Fig. 6 ) interstriae with elongate, middorsal spot of dark ferruginous to fuscous scales. Vestiture of prothorax ( Fig. 6 ) consisting of admixture of broad, non-imbricate, uniformly recumbent, ferruginous to fuscous scales and of sparser, more pallid fulvous scales and of sparse, broad, cretaceous scales in indistinct median vitta and diffuse horizontal band. Rostrum ( Fig. 5 ) distinctly, evenly curved in both sexes; in dorsal view slightly wider at base than at apex, subequal in length to length of prothorax along midline; densely rugose-punctate and sparsely covered with scales well apicad of antennal attachments; proximal portion feebly tricarinate in apical twothirds; lateral rostral groove well defined, with carinate dorsal margin and with narrow scales. Antennae attached in distal one-third of rostrum in both sexes; scape strongly enlarged in apical one-fifth, apex curved outward; funicular segment 1 strongly clavate, about as long as following three segments combined; segment 2 slender, 2–3X longer than broad, about as long as next two segments combined; following five segments approximately same length, 6 and 7 slightly broader than others; club elongate-oval, segments tightly joined, much shorter than preceding funicular segments combined. Head with frons flat, without median carina; scales broad, slightly broader around eyes than medially; frontal fovea not visible. Prothorax ( Fig. 6 ) 1.3X wider than long; sides subparallel at base, evenly rounded to subapical constriction; integument on disc closely, coarsely, evenly punctate. Scutellum ( Fig. 6 ) short, less than 2X longer than wide, densely covered with cretaceous scales. Elytra ( Fig. 6 ) distinctly wider than prothorax at base; interstria 3, but not 5 and 7, strongly elevated at extreme base; sides slightly convergent from behind humeri to apex. Pygidium simple, somewhat flattened medially. Venter with broad, dense, pallid fulvous scales; scales on meso- and metasterna broader, imbricate; scales more slender on abdominal sterna. Abdominal sternum 1 along midline about as long as sterna 2 and 3 combined; sternum 2 distinctly longer than 3; sterna 3 and 4 subequal in length; sternum 5 distinctly longer than sternum 3, shorter than 3 and 4 combined, unmodified. Genitalia with male body of aedeagus slightly curved throughout most of length in side view, slightly more curved at apex, with slight, ventral, subapical prominence; in dorsal view, sides slightly, nearly evenly, narrowed to apex, with slight apicolateral prominences, slightly rounded apically; endophallus with sparse, minute spines, without evident sclerite. Legs with long, slender, cretaceous to pallid fulvous scales on femora, with more hair-like on tibiae; profemur 2.9– 3.0X longer than broad; protibia of male, in anterior view, evenly curved, slightly expanded in apical one-third, with minute, apical uncus.

Discussion. Achia boliviana is sympatric with A. uniformis . It is distinguished from that species by the presence of an elongate rather than chevron-shaped spot of dark scales on the elytra, by the generally less stout body form, and by other characters included in the key to species.

Host Relationships. Adults of A. boliviana emerged from seeds of Urvillea chacoensis Hunz. collected in Santiago del Estero Province, Argentina.

Distribution. Achia boliviana is known from Bolivia and northern Argentina.

Type Material. Holotype, male, Bolivia: Bolivien / Germain. Coll. Kraatz. MUSEUM PARIS/1949/ Col. A. HUSTACHE. achia/boliviana/m. ( MNHN) . Paratypes (total, 14), 1 female, Bolivien /Germain. Coll. Kraatz. MUSEUM PARIS/1949/ Col. A. HUSTACHE. ( MNHN) . 1 female, Bolivia / Coroico /Germain. Coll. Kuschel. ( NZAC) . 1 male, Argentina , Salta: ARGENTINA. Prov. Salta / Cerrillos, INTA/ 5-9.II.1982 / H. & A. Howden. ( CMNC) . 1 male, ARGEN- TINA. Prov. Salta / Viñaco, 15 kmS. El Carril / 12.II.1982 / H. & A. Howden .

( CMNC). Santiago del Estero: 3 males, 2 females, ARGENTINA / Sgo. del Estero prov./ 9 Jun 2006 / Mc Kay col. Emerged from/seeds of/ Urvillea chacoensis / GPS:016. ( MACN, TAMUIC) . 3 males, 2 females, ARGENTINA / Sgo. del Estero prov./ 30 Apr 2006 / Cabrera col. Emerged from/seeds of/ Urvillea chacoensis /GPS:248. ( MACN) .

Figures

Figs. 5–6. Achia boliviana: habitus, female, Santiago del Estero, Argentina. 1) lateral view; 2) dorsal view.