Carcinops rugulus, 2017

Reese, Ellen M. & Swanson, Alexander P., 2017, A Review of the CactophilicCarcinopsMarseul (Coleoptera: Histeridae) of the Sonoran Desert Region, with Descriptions of Six New Species, The Coleopterists Bulletin 71 (1), pp. 159-190 : 161

KEY TO THE SUBGENERA AND SPECIES OF NEARCTIC CACTOPHILIC CARCINOPS

1. Ground punctures formed by a cluster of 3–4 micropunctures ( Fig. 6 ), lateral disc of 1 st abdominal ventrite tristriate ( Fig. 2E ). Subgenus Carcinopsida .............................2

1′. Ground punctures simple, lateral disc with fewer than 3 striae. Subgenus Carcinops ....................................................................3

2. Parameres of aedeagus sinuate, terminating in rounded hooks converging toward the midline ( Fig. 9E ).............. C. opuntiae (LeConte)

2′. Parameres of aedeagus straight, terminating

in strongly acute, deflexed hooks ( Fig. 9J )....

.................... C. wenzeli Reese and Swanson ,

new species

3. Frontal stria of head continuous with marginal epistomal stria ( Fig. 4B, C ) ................ ............................... C. corticalis (LeConte)

3′. Frontal stria interrupted anteriorly, marginal epistomal stria absent ( Figs. 3B, 5B )............ 4

4. Lateral discs of metasternum and 1 st abdominal ventrite with relatively strong microsculpture between punctures, especially apparent under normal magnification when specimen is angled so as to produce a reflective glare from aforementioned sclerites ( Fig. 2B ) ....................................... C. rugulus Reese and Swanson , new species

4′. Lateral discs of metasternum and 1 st abdominal ventrite smooth, not sculptured between punctures ( Fig. 2A )...................................... 5

5. Marginal stria of pronotum distinctly sinuate behind head ( Fig. 5A )..........................6

5′. Marginal stria of pronotum essentially straight behind head ( Figs. 3A, 4A ).............................7

Figures

Figs. 3–6. Head morphology of Carcinops kumeyaay, with arrows showing key character states: 3) C. kumeyaay; 4) C. corticalis; 5) C. curtus. Photographs by E. Reese. 6) Ground punctation patterns on the pronotum of species in the subgenus Carcinopsida (Carcinops wenzeli). Photograph by A. Swanson.

Fig. 2. Variation of the lateral disc of the first abdominal ventrite in Carcinops species. A) Single stria present (C. torquatus), B) Single stria with microsculptures present (C. rugulus), C) Bistriate (C. consors), D) Bistriate (C. yaqui), E) Tristriate (C. wenzeli). Photographs by A. Swanson.

Fig. 9. Aedeagal morphology of Carcinops species, with parameres toward the top of the page and basal pieces toward the bottom. A) C. consors, B) C. gilensis, C) C. corticalis, D) C. papagoanus, E) C. opuntiae, F) C. curtus, G) C. rugulus, H) C. torquatus, I) C. yaqui, J) C. wenzeli. Photographs by A. Swanson.