Glaresis, Erichson, 1848

Gordon, Robert D. & Hanley, Guy A., 2014, Systematic revision of American Glaresidae (Coleoptera: Scarabaeoidea), Insecta Mundi 2014 (333), pp. 1-91 : 20-21

Key to species of Glaresis - Inducta Group

1. Elytral striae raised, distinctly carinate, carinae nearly continuous ( Fig. 17A, C ) ................... 2

— Elytral striae convex or nearly flat, not distinctly carinate, carinae reduced to short segments, or very short, serving only as setal bases ( Fig. 12A , 16E ) ........................................................... 3

2(1). Posterolateral mesotibia with 4-5 spines on lateral margin, spinal bases widely separated ( Fig. 17D ); metatibial surface with small, mostly oblique transverse ridges or carinae ( Fig.17F ); size small, length 2.60 to 3.20 mm; body form short, stout, lateral margins of elytra slightly rounded medially ( Fig. 17A ) ......................................................................................... G. inducta Horn

— Posterolateral metatibia with 6 or more spines on lateral margin, spinal bases close together ( Fig. 18D ); metatibial surface with coarse, dense armature composed of tubercles and ridges( Fig. 18F ); size large, length 3.30 to 4.30 mm; body form comparatively more elongate, lateral margins of elytra not rounded medially ( Fig. 18A ) ............................................ G. canadensis Brown

3(1). Metasternal groove present, distinct ( Fig. 15D ); southern Utah, Wyomng .................................. ...................................................................................................................... G. sabulosa , n. sp.

— Metasternal groove not visible or only slightly so ( Fig. 13D ); Arizona, southern California, South America ............................................................................................................................ 4

4(1). Elytral striae flat, or nearly so, strial carinae reduced to setal bases ( Fig. 12C ); Arizona, southern California, South America ......................................................................................................... 5

— Elytral striae raised, strial carina composed of widely separated carinal segments ( Fig.16E ); El Paso Co., Texas ............................................................................................. G. warneri , n. sp .

5(4). Posterior metatrochanteral margin serrate, with large tooth near metafemur ( Fig. 14H ); posterior metafemoral margin with tooth ( Fig. 14H ); South America ........... G. fritzi Martinez et al.

— Posterior metatrochanteral margin not serrate, without large tooth; posterior metafemoral margin without tooth; not known from South America ....................................................................... 6

6(5). Outer margin of metatibia with pronounced, continuous, wide shelf-like projection extended about 1/2 width of metatibia ( Fig. 12F ); mesotibia with 4 or 5 spines on external margin ( Fig. 12D ); spines on posterosuperior metatrochanteral surface widely separated; Kelso Dunes, San Bernardino Co., California ........................................................................ G. arenata Gordon

— Outer margin of metatibia with posteromedian projection not shelf-like, usually not extended more than 1/3 width of metatibia ( Fig. 13G ) ; mesotibia with 6 or more spines on external margin; spines on posterosuperior metrochanteral surface narrowly spaced ( Fig. 13H ); Arizona ............................................................................................................... G. zvirgzdinsi Warner

Figures

Figures 12A-12G. Glaresis arenata Gordon. 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.

Figures 13A-13H. Glaresis zvirgzdinsi Warner. A) Habitus view. B) Clypeus and head surface. C) Pronotal surface. D) Metasternum and mesotibia. E) Elytral striae. F) Male genitalia. G) Metaleg and trochanter, dorsal view. H) Metaleg and trochanter, ventral view.

Figures 14A-14H. Glaresis fritzi Martinez. A) Habitus view. B) Clypeus and head surface. C) Pronotal surface. D) Metasternum and mesotibia. E) Elytral striae. F) Male genitalia. G) Metaleg and trochanter, dorsal view. H) Metaleg and trochanter, ventral view.

Figures 15A-15G. Glaresis sabulosa, new species. 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.

Figures 16A-16H. Glaresis warneri, new species. A) Habitus view. B) Clypeus and head surface. C) Elytra. D) Metasternum and mesotibia. E) Elytral striae. F) Male genitalia. G) Metaleg, dorsal view. H) Metaleg and trochanter, ventral view.

Figures 17A-17G. Glaresis inducta Horn. A) Habitus view. B) Clypeus and head surface. C) pronotal surface. D) Metasternum and mesotibia. E) Male genitalia. F) Metaleg, dorsal view. G) Metaleg and trochanter, ventral view.

Figures 18A-18G. Glaresis canadensis Brown. A) Habitus view. B) Clypeus and head surface. C) Elytral striae. D) Metasternum and mesotibia. E) Male genitalia. F) Metaleg and trochanter, dorsal view. G) Metaleg and trochanter, ventral view.