Glaresis donaldi Gordon and Hanley, 2014

Gordon, Robert D. & Hanley, Guy A., 2014, Systematic revision of American Glaresidae (Coleoptera: Scarabaeoidea), Insecta Mundi 2014 (333), pp. 1-91 : 47-48

Glaresis donaldi Gordon and Hanley , new species

Description. Female. Length 2.8 mm, width 1.5 mm; body form short, wide, strongly widened from elytral base to apical 1/3 ( Fig. 32A ). Color dark brown. Head with clypeal surface and anteromedian 1/3 of frons slightly shiny, with finely reticulate sculpture and small, sparse tubercles, posterior portion of frons and vertex feebly shiny, with coarse reticulate sculpture; setae short, indistinct. Clypeal apex truncate, with small, evenly spaced tubercles, appearing somewhat serrate, lateral angles oblique, angulate ( Fig. 32B ). Mandible pair symmetrical; mesal tooth strong; lateral prominence strong, pronounced; outer margin slightly abruptly rounded. Pronotum with deep, long, transverse fovea in anterior 1/4 extended completely across pronotum, small slightly transverse fovea on each side of middle in anterior 1/2, wide, deep fovea on each side medially near lateral margin, deep central furrow extended from base to transverse furrow; surface densely rugose, surface with sparse, short, slightly irregular, setae-bearing carinae, setae about 1/2 length of carinae ( Fig. 32C ); anterior and lateral pronotal margins crenulate, not bordered, lateral margin slightly crenulate. Elytra with surface shiny, finely microreticulate; all striae smooth, strongly carinate, carinae appearing continuous but narrowly interrupted adjacent to space between interval punctures, each carinal segment bearing an apical seta about 1/2 length of segment; intervals with deep, round punctures ( Fig. 32E ). Metasternum long, dull, finely, densely microreticulate, median surface not tuberculate medially, most of remaining surface with short, dense, irregular carinae forming reticulate pattern, median area flat, with median carina extended 2/3 distance to mesocoxae; metasternal groove narrow, shallow, inner margin rounded, outer margin with weak ridge ( Fig. 32D ). Lateral protibial teeth not evenly spaced, 2nd and 3rd teeth close together. Mesotibia with 4 short, closely spaced spines from base to apex of posterolateral emargination, tibia strongly projecting at apex, projection with acute apex ( Fig. 32D ). Posterior metatrochanteral margin smooth, with indistinct row of tubercles on surface of posterior flange; posterosuperior surface of metatrochanter with single large tooth, tooth not visible directly in ventral view. Metafemoral surface densely, coarsely microreticulate, with sparse, small, round, setae-bearing tubercles in anterior 1/2; width to length ratio 1.0:1.6, with wide flange on anterior margin, posterior margin without teeth; posterosuperior margin without teeth ( Fig. 32F ). Metatibia narrow at base, abruptly widened before apex, surface entirely, strongly microreticulate, lateral margin with narrow row of small teeth from near base to lateral projection, with distinct posteromedian lateral projection, medially with uniform row of large, widely spaced, tubercles, tubercles posterior to posteromedian lateral projection transversely oblique, inner margin smooth, pubescent ( Fig. 32F ). Apex of 5th abdominal ventrite not examined.

Male. Unknown.

Variation. Holotype only.

Type material. Holotype female: Mexico. Puebla: MEXICO: Puebla, 6 Mi. SW. Tehuacan , July 8-10m 1973, Mastro & Schaffner ( TAMU).

Remarks. The unique female holotype is distinguished from other known species in this subgroup by the metatibia having a distinct posteromedian lateral projection. It is also smaller in size and has a ventral surface somewhat more strongly, densely microreticulate than the other species.

This specimen represents the first published record of a Glaresis species from southern Mexico. All other Mexican species are recorded from northern Mexico and Baja California.

Etymology. This species is named in honor of the late Donald Whitehead, coleopterist, old Mexico hand, and former colleague of one of us (RDG). A good friend, excellent scientist, and good man to travel with.

Figures

Figures 32A-32F. Glaresis donaldi, new species.A) Habitus view. B) Clypeus and head surface. C) Pronotal surface and elytral striae. D) Metasternum and mesotibia. E) Elytral striae. F) Metaleg and trochanter with teeth, dorsal view.