Microtrachelizus australicus, Mantilleri, 2011

Mantilleri, Antoine, 2011, Revision of the Tribe Microtrachelizini Zimmerman, 1994, from Australia: New Taxa and Records (Insecta: Coleoptera, Brentidae), Records of the Australian Museum 63 (1), pp. 89-98: 96-97

publication ID

http://doi.org/ 10.3853/j.0067-1975.63.2011.1555

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scientific name

Microtrachelizus australicus


Microtrachelizus australicus   n.sp.

Microtrachelizus species 6   , Zimmerman, 1991: 153; 1994: 195.

Type material. HOLOTYPE ♂, QLD.AUST., Cairns, 11 Oct 71, Whitfield R., 11 miles [along road], Collr A. & M. Walford-Huggins ( ANIC)   . PARATYPES: 1♂, Whitfield R., Cairns N. Q., 1350', 16.II.71, J. G. Brooks, MNHN EC1821 ( MNHN)   ; 1♀, Whitfield , Cairns N. Q., 1100', 14.XII.70, J. G. Brooks ( ANIC)   ; 1♀, Australia: n. Qld , Windsor Tableland, 38 km from main road, 15.I.–8.III.1986, Storey & Brown, MDPI intercept trap site no. 14C ( ANIC)   ; 1♂, Australia, Cairns , Qld, Nov. 1947, J. G. Brooks, E. Gowing-Scopes collection ( NHM)   ; 1♂, Australia, N. QLD, Millaa Millaa Falls , 4.I.–7.II.1990, Storey & Halfpapp, MDPI F.I.T. site 34, E. Gowing-Scopes collection ( NHM)   ; 1♀, Kuranda , N. Q., 8.3.69, J. G. B., prép. micro. no. AM00086, MNHN EC1818 ( MNHN)   .

Description. Measurements. Length: 4.4–5.4 mm; width across humeral calli: 0.7–0.9 mm; ratios: length of head/ length of pronotum: 0.7–0.9; length of pronotum/width of pronotum: 1.3–1.4; base of pronotum/apex of pronotum: 1.4–1.6; length of pronotum/length of elytra: 0.40–0.45; length of elytra/width of elytra: 3.1–3.3. — Colour. Head, antennae and pronotum brownish-red; legs and elytra paler. Elytra with darker sutural stripe and transverse post-median blotch. — Habitus. Figs 7–8 View Figs 1–8 . — Head ( Fig. 41 View Figs 34–50 ) strongly broader than long, finely punctate, with small basal median notch. Eyes large, projecting laterally; temples short not protruding behind eyes. Vertex and frons shallowly grooved. Metarostrum, mesorostrum and base of prorostrum longitudinally grooved, metarostrum without lateral grooves. Prorostrum with very fine punctures, 0.5–0.7× as long as head + metarostrum + mesorostrum. Antennal segment 3 ( Fig. 42 View Figs 34–50 ) broader than long, conical; 4–8 subglobular, broader than long, with a row of long raised setae; 9–11 slightly flattened, 11th 1.6–2.0× longer than 10th. Venter of head, metarostrum and mesorostrum longitudinally grooved; mesorostrum with small projection on either side under antennal base. — Pronotum ( Fig. 41 View Figs 34–50 ) flattened, almost depressed on disc, longitudinally grooved, much broader at base than at apex, with numerous fine punctures. Prothorax without fovea in front of quite rounded, hardly conical procoxae; prosternellum distinct. Protibiae ( Fig. 43 View Figs 34–50 ) 0.5–0.6× as long as profemora. Metasternum longitudinally grooved, laterally not carinate, punctate (especially on lateral declivities). Elytra glabrous, base straight. Interstria 2 present from base to apex; 3 more elevated and present from base to apex; 4 present from base to apical declivity; 5, 6 and 7 fused anteriorly to form a common humeral callus; 8 present only on 2nd half of elytra; 9 forming external apical border of elytra. Apex of elytra not explanate nor notched at apex. Hind wings ( Fig. 50 View Figs 34–50 ) without basal sclerite.

Sternites III–IV ( Fig. 44 View Figs 34–50 ) slightly grooved and punctate, laterally not carinate, weakly depressed in male; V–VI finely punctate posteriorly; VII with transverse median notch at base and two latero-apical depressions, without apical fovea, in male with two rows of raised setae between latero-apical depressions. Spiculum gastrale as in Fig. 45 View Figs 34–50 . Tegmen ( Fig. 46 View Figs 34–50 ) with parameres reduced, filiform, short, not fused. Tergite VIII of female ( Fig. 47 View Figs 34–50 ) bluntly denticulate at apex. Spermatheca as in Fig. 48 View Figs 34–50 . Gonocoxites ( Fig. 49 View Figs 34–50 ) fused at base; styli reduced, lateral.

Distribution. Only known from North Queensland, Australia.

Remarks. This species cannot be confused with any other of the genus, but its affinities are still unclear.


Australian National Insect Collection


Museum National d'Histoire Naturelle














Microtrachelizus australicus

Mantilleri, Antoine 2011

Microtrachelizus species 6

Zimmerman, E 1994: 195
Zimmerman, E 1991: 153