Glaresis bajaensis Gordon and Hanley,

Gordon, Robert D. & Hanley, Guy A., 2014, Systematic revision of American Glaresidae (Coleoptera: Scarabaeoidea), Insecta Mundi 2014 (333), pp. 1-91: 10

publication ID

publication LSID


persistent identifier

treatment provided by


scientific name

Glaresis bajaensis Gordon and Hanley

new species

Glaresis bajaensis Gordon and Hanley  , new species

Description. Female. Length 4.2 mm, width 2.2 mm; body form elongate, slightly widened from elytral base to apical 1/3 ( Fig. 3AView Figures 3). Color yellowish brown. Head with clypeal surface smooth, shiny, frons and vertex densely, coarsely microreticulate, clypeus and frons with dense, small punctures separated by a diameter or less, setae short, barely emergent from punctures; vertex without median basal carina. Clypeal apex truncate, smooth, narrow, angled posteriorly, posterior margin of angled apex not thickened ( Fig. 3BView Figures 3), lateral angles obtusely angled. Mandible pair symmetrical; mesal tooth strong; lateral prominence strong, pronounced; outer margin angular. Pronotum with feeble central furrow extended from base nearly to apex, surface shiny, densely micoreticulate, with dense, elongate, vertical ridges, setae short, barely noticeable ( Fig. 3CView Figures 3). Anterior and lateral pronotal margins not bordered, anterior margin smooth medially, crenulate in lateral 1/4, lateral and basal margins entirely crenulate. Elytron with flat striae lacking carinae, surface feebly shiny, distinctly, densely microreticulate; each stria with small, widely spaced, nearly round, seta-bearing tubercles, setae short, slightly shorter than diameter of an interval puncture; interval with small, round punctures ( Fig. 3EView Figures 3). Metasternum long, feebly shiny, finely, densely microreticulate, surface not tuberculate medially, laterally with some closely spaced, long, oblique, seta-bearing ridges; without trace of metasternal groove ( Fig. 3DView Figures 3). Lateral protibial teeth evenly spaced, basal tooth reduced. Mesotibia with 5 spines laterally, spinal bases widely separated, outer apex of tibia not strongly projecting. Posterior margin of metatrochanter with 2 large teeth, 1 small tooth, small tooth barely visible ( Fig. 3GView Figures 3); posterosuperior surface without tubercles. Metafemoral surface with narrowly spaced, elongate, setae-bearing tubercles, finely microreticulate, shiny in apical 2/3, posterior 1/3 densely microreticulate, dull, slightly elongate; width to length ratio 1.4:2.0, without flange on anterior margin; posterosuperior margin with single large tooth, sometimes with additional small tooth. Metatibial surface finely microreticulate except extreme apex and apex of lateral expansion shiny (probably from wear). Outer lateral metatibial margin serrate with row of small, seta-bearing teeth, posteromedian lateral projection large, shelf-like, apical margin uneven; row of more or less 3 tubercles anterior to lateral expansion; median surface and apex without tubercles; inner lateral margin with row of small, seta-bearing tubercles, emarginate in apical 1/3, small tooth present at base of emargination ( Fig. 3FView Figures 3). Apex of 5th adominal ventrite truncate.

Male. Unknown.

Variation. Length 4.0 to 4.3 mm, width 2.1 to 2.4 mm. Clypeal apex with smooth area slightly varying in width; mesotibia with 4 or 5 lateral spines.

Type material. Holotype female: Mexico. Baja California: MEX: Baja Calif. Sur, 5.7 mi. SE Mulege BL, VI-28-/30-77, Sand dunes, Joselyn K. Aalbue col. ( CASC)  . Paratypes, 4: (2) same data as holotype; (1)  MEX: Baja California Norte , 6 mi. N Guerro Negro, VII-4-1979, Hardy, Andrews & Guiliani; (1)  MEX: Baja Calif. Norte, 6 mi. N Guerro Negro , VII-4-1979, Hardy, Andrews & Giuliani, Walking on dunes at night. ( CASC) ( CSCA ( USNM). 

Remarks. This species is similar to G. ecostata  but is distinguished from that species by head with punctures small; smooth anterior area of clypeus narrow, posterior border not thickened; pronotum with carinae closely spaced; metafemoral surface with ridges narrowly spaced; and posterolateral mesotibial emargination with 4 spines, spinal bases close together.

Males of this Mexican species were not present in material examined.

Etymology. The specific name refers to Baja California where the type specimens were collected.


California State Collection of Arthropods


Smithsonian Institution, National Museum of Natural History