Glaresis phoenicis Fall, 1907

Gordon, Robert D. & Hanley, Guy A., 2014, Systematic revision of American Glaresidae (Coleoptera: Scarabaeoidea), Insecta Mundi 2014 (333), pp. 1-91 : 14-15

Glaresis phoenicis Fall

Glaresis phoenicis Fall 1907: 24 ; Gordon 1970: 502.

Description. Male. Length 3.2 mm, width 1.6 mm; body form elongate, nearly parallel-sided, slightly widened from elytral base to apical 1/3 ( Fig. 7A ). Color yellowish brown. Entire head surface densely microreticulate, dull, clypeus and frons with small tubercles separated by less than to twice diameter of a tubercle, setae short, barely visible. Clypeal apex weakly emarginate medially, somewhat sinuate, with small, dense, evenly spaced tubercles, appearing serrate, without large tubercle on each side of middle, lateral angles oblique, pronounced, outwardly toothed ( Fig. 7B ). Mandible pair symmetrical; mesal tooth strong; lateral prominence strong, pronounced; outer margin abruptly rounded. Pronotum with all foveae weakly impressed except fovea on each side medially near lateral margin strongly impressed; surface densely rugose, with sparse, setae-bearing carinae, carinae elongate, straight ( Fig. 7C ). Elytra with surface dull, densely microreticulate; striae convex, feebly carinate, carinal segments widely separated, each with short seta; intervals with shallow, slightly rectangular punctures. Metasternum long, feebly shiny, finely, densely microreticulate, surface medially flat without median carina, lateral surface with short ridges in basal 3/4 ( Fig. 7D ); metasternal groove nearly invisible. Lateral protibial teeth unevenly spaced, basal 2 teeth close together. Mesotibia with 4 spines laterally, 1 spine near apex of posterolateral emargination, 3 spines closely grouped on or near median projection, tibia strongly projecting at apex ( Fig.7D ). Posterior metatrochanteral margin without teeth, outer angle lacking tooth; posterosuperior surface of metatrochanter with single large tooth often visible directly in ventral view ( Fig. 7G ). Metafemoral surface with widely scattered, elongate, setae-bearing tubercles, microreticulate; width to length ratio 1.0:1.6, with narrow flange on anterior margin, large, blunt tooth at angle near trochanter; posterosuperior margin without tooth ( Fig. 7G ). Metatibia broadly triangular, surface entirely microreticulate, outer margin without large teeth, with series of small, subequal teeth from base nearly to apex, inner margin smooth, pubescent ( Fig. 7F ). Apex of 5th abdominal ventrite truncate. Genitalia long, basal piece about as longer as parameres, proximal end curved; median lobe shorter than parameres, slightly tapered from base to acute apex, narrow, about width of paramere at middle, curved upward before apex; parameres feebly curved in lateral view, apex bluntly rounded ( Fig. 7E ).

Female. Abdominal apex with triangular notch.

Variation. Length 3.2 mm to 4.3 mm, width 1.6 to 2.2 mm.

Type locality. Arizona, Phoenix.

Type depository. MCZ.

Temporal distribution. March-August.

Geographical distribution. UNITED STATES. Arizona: Phoenix; La Paz Co., Parker; 9.5 mi. SE AZ-CA state line at Parker; Maricopa Co., Jct. Airport Rd. & Gila R., S. of Liberty; Mohave Co., Kingman; Mohave Co., Virgin River Rec. Area; Pima Co., Tucson; Pima Co., Verde River; Yuma Co., Dateland; Yuma Co., Ehrenberg; Mohawk Dunes; Yuma. California: Imperial Co., Algodones Dunes, 7.4 mi S Glamis; Inyo Co., Eureka Valley; Riverside Co., Bradshaw Trail Rd. 4 mi. W. Graham Pass Rd; San Bernardino Co., Needles; Kelso sand dunes. Nevada: Clark Co., Mesquite; Mercury. ( BYUC) ( CASC) ( CMNC) ( CNIC) ( CSCA) ( FSCA) ( SMCC) ( RCCC) ( TAMU) ( UCRC) ( USNM).

Remarks. Glaresis phoenicis , G. montenegro , G. dakotensis and G. imitator differ from G. medialis by the outer metatibial margin serrate with small teeth, without a larger posteromedian lateral tooth. Glaresis phoenicis and G. montenegro are distinguished from G. dakotensis by a distinctly tuberculate head, absence of small tubercle or swelling on each side of apical clypeal emargination, teeth on outer margin of metatibia equal from base to apex; width to length ratio of metafemur 1.0:1.6; and median lobe of male genitalia distinctly shorter than paramere, narrow, about width of paramere. The mesotibial figure for G. phoenicis is not accurate in the number of lateral spines seen. Two of these spines have been broken off because there should be 4 visible. See Remarks under G. montenegro .

Figures

Figures 7A-7G. Glaresis phoenicis Fall. A) Habitus view. B) Clypeus and head surface. C) Pronotal surface. D) Metasternum and mesotibia. E) Male genitalia. F) Metaleg and trochanter, dorsal view. G) Metaleg and trochanter, ventral view.