Glaresis bajaensis 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 : 10

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. 3A ). 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. 3B ), 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. 3C ). 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. 3E ). 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. 3D ). 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. 3G ); 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. 3F ). 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.

Figures

Figures 3A-3G. Glaresis bajaensis, new species. A) Habitus view. B) Clypeus and head surface. 3C) Pronotal surface. D) Metasternum and mesotibia. E) Elytral striae. F) Metaleg and trochanter, dorsal view. G) Metaleg and trochanter, ventral view.