Microtrachelizus altostriatus, 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

publication ID

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

persistent identifier


treatment provided by


scientific name

Microtrachelizus altostriatus


Microtrachelizus altostriatus   n.sp.

Microtrachelizus species 4   , Zimmerman, 1991: 151; 1994: 195.

Type material. HOLOTYPE ♂, Cape York Pen., N. Q., Iron Range , 15 Sept. 1974, Coll. A. & M. Walford-Huggins ( ANIC)   . PARATYPE ♂, 12°44'S 143°16'E, 6 km ENE of Mt. Tozer , QLD, 30 June 1986, T. Weir & A. Calder, collected at light, MNHN EC1817 ( MNHN) GoogleMaps   .

Description. Measurements. Length: 6.3–6.5 mm; width across humeral calli: 1.0– 1.1 mm; ratios: length of head/length of pronotum: 0.9–1.0; length of pronotum/width of pronotum: 1.3; base of pronotum/apex of pronotum: 1.3–1.4; length of pronotum/length of elytra: 0.4; length of elytra/width of elytra: 3.3. — Colour. Brownish-red. — Habitus. Figs 5–6 View Figs 1–8 . — Head ( Fig. 34 View Figs 34–50 ) broader than long, smooth, with three strong basal notches. Eyes large, projecting laterally; temples indistinct. Vertex and frons not grooved. Metarostrum and mesorostrum strongly grooved, the groove vanishing on prorostrum; metarostrum with deep lateral grooves. Prorostrum 0.5× as long as head + metarostrum + mesorostrum.Antennal segment 3 ( Fig. 35 View Figs 34–50 ) broader than long, conical; 4–8 broader than long, cylindrical; 9–10 not flattened, 11th 1.7–1.8× longer than 10th and acuminate at apex. Venter of head and metarostrum grooved; mesorostrum with a small projection on either side under antennal base. — Pronotum ( Fig. 34 View Figs 34–50 ) without punctures, longitudinally grooved. Prothorax with a small fovea in front of procoxae; prosternellum almost indistinct. Protibiae ( Fig. 36 View Figs 34–50 ) 1.40–1.45× longer than profemora. Metasternum flat, grooved, laterally carinate, not punctate. Meta- and mesofemora not pedunculate; inner spur of meso- and metatibia enlarged in male, not bifid. Elytra glabrous, base slightly concave; interstriae elevated. Interstria 2 distinct only at apex; 3 present from base to apex; 4 reaching apical declivity; 5, 6 and 7 fused anteriorly to form a common humeral callus. Apex of elytra rimmed, external apical border formed by interstria 9. Hind wings ( Fig. 40 View Figs 34–50 ) with basal sclerite.

Sternites III–IV in male ( Fig. 37 View Figs 34–50 ) depressed, very slightly carinate on sides before lateral declivities; V–VI each with three basal notches in middle; VII in middle with deep basal notch and apical fovea, latero-apically with two depressions. Spiculum gastrale as in Fig. 38 View Figs 34–50 . Tegmen ( Fig. 39 View Figs 34–50 ) with parameres fused at base.

Female unknown.

Distribution. Only known from Queensland, Australia.

Etymology. The specific epithet derives from the Latin words “ altus ”, meaning deep, and “ striatus ”, meaning striated, referring to the well-marked elytral striae of the species.

Remarks. This species is probably related to the Oriental species M. bhamoensis (Senna, 1892)   and M. cylindricornis (Power, 1880)   , which also have the parameres fused at the base, but it differs from the former in having more strongly elevated interstriae and a less strongly rounded elytral apex and from the latter in having elytral interstria 2 distinct posteriorly (obsolete in H. cylindricornis   ).


Australian National Insect Collection


Museum National d'Histoire Naturelle














Microtrachelizus altostriatus

Mantilleri, Antoine 2011

Microtrachelizus species 4

Zimmerman, E 1994: 195
Zimmerman, E 1991: 151