Pseudomorpha (Pseudomorpha) pima Amundson & Erwin, 2013

Erwin, Terry L. & Amundson, Lauren M., 2013, Beetles that live with ants (Carabidae, Pseudomorphini, Pseudomorpha Kirby, 1825): A revision of the santarita species group, ZooKeys 362, pp. 29-54 : 39-40

Pseudomorpha (Pseudomorpha) pima Amundson & Erwin sp. n. Figures 4 , 10 , 17 , 18

Holotype.

USA: Arizona, Pima County, Santa Rita Mountains, Lower Madera Canyon, 31.745°N, 110.919°W, 1174m, 14-16 July 1978 (W.H. Tyson) (CAS: 8111006, female). A paratype is listed below; see other specimens examined.

Derivation of specific epithet.

The epithet " pima " is a singular feminine noun used in apposition and is the name of Aztecan descended peoples that live along the Gila and Salt rivers in southern Arizona.

Proposed english vernacular name.

Pima False-form beetle.

Diagnosis.

Color tone of dorsum piceous with head slightly darker over eyes; body robust and rectangulate, lateral margins of elytra tapering to an apically truncated and laterally slightly rounded apex; dorsum mostly glabrous with irregularly and wide-spaced short erect setae; pronotum with lateral margins moderately explanate, about coequal in width to that of elytra across humeri, disc markedly convex and planar; elytral interneurs moderately impressed and visible under low magnification, interneurs slightly convex; 10 umbilicate setae present near lateral margin, dorsal edge of epipleuron lined with long laterally erect setae.

Description.

( Figs 4 , 10 , 17 ). Table 4 . Size: Large for genus, ABL = 6.3 to 6.8 mm, SBL = 6.3 to 6.7 mm, TW = 5.1 to 5.7 mm. Preocular lobe-eye ratio: 0.56 to 0.57. Pronotum ratio (L/W): 0.31. Elytron ratio (L/W): 1.5 to 1.6. Color: Dorsum piceous, slightly lighter brown along explanate edges of dorsum. Luster:Dorsum dull, slightly matte. Microsculpture: Small isodiametric sculpticells throughout dorsal surface. Head: Genal lobe obsolete, rim posteriad and below eye bearing at least five robust setae directed perpendicular to head; preocular lobe distinct, moderately prominent, and more or less straight ( Fig. 10 ); eye not exceeding preocular lobe/gena boundary, shallowly arcuate; clypeus fused to frons with pigmented furrow entire and visible, bisetose, setae laterad on margin; labrum with four setae projecting anteriorly ( Fig. 10 ); antennal flagellum markedly setose, antennomeres 1-3 bisetose. Prothorax: Pronotum ( Fig. 4 ) mostly glabrous with irregularly and wide-spaced short erect setae, apex slightly arcuate medially and narrower than ocular boundary, disk markedly convex and planar, width slightly wider than elytra across humeri, base and apex fringed with more or less evenly spaced setae, median line ending about ¾ before basal margin, lateral margins of pronotum with wide explanate sides, anterior angle 89.22°; prosternal apex fringed with short, evenly spaced setae. Pterothorax: Scutellum (normally) visible, moderate sized, narrowly rounded apically; elytra smooth ( Fig. 4 ), interneurs very shallow, clearly visible under low magnification, markedly zig-zagged, intervals slightly convex on disc, lateral margin very slightly sinuate at basal third, 10 umbilicate erect setae on the ventrally directed curvature of the elytral lateral portion. Abdomen: All sterna sparsely setiferous, sternum III densely so; male unknown; female with 2 pairs of 4 setae on sternum, and numerous longer setae on sterna IV, V, and VI. Legs: Legs flattened, setiferous, tibia bearing fringed ring of setae on distal end, femur with distinct lateral sulcus, femora and tibiae sparsely setose. Female Genitalia: (see Fig. 17 ).

Dispersal potential.

These beetles are macropterous and have been recorded at lights, hence capable of flight; they are swift and agile runners. Accordingly, the species may be expected to be more broadly distributed across a wider geographical range than current records indicate. Female adults are attracted to lights.

Way of life.

Adults are likely found in ant nests and the surrounding vicinity; females are ovoviviparous ( Liebherr and Kavanaugh 1985); larvae are ant nest inquilines ( Erwin 1981). Members of Pseudomorpha pima occur at midland and upland altitudes near the Sonoran Desert. Adults are active in early to mid-July, a very hot month in this area. For images of habitats at the paratype locality (Bog Springs) see: http://www.meetup.com/phoenix-atheists/events/109850282/.

Other specimens examined.

USA: Arizona, Pima County, Santa Rita Mountains, Bog Springs, 31.726°N, 110.874°W, 1524m, 3 July 1958 (J. von Bloeker Jr.) (SBNHM: ADP109219, female paratype).

Geographic distribution.

( Fig. 18 ). This species is currently known from Arizona.

Figures

Figure 18. Distribution map for species of the santarita group of Pseudomorpha.

Figure 1 - 6. 1 Pseudomorpha huachinera sp. n., male holotype, ADP 110112; Arroyo El Cocono, Sierra Huachinera, Sonora, Mexico. Habitus, dorsal aspect, ABL = 5.88 mm 2 Pseudomorpha patagonia sp. n., male holotype, ADP 110694; Madera Canyon, Santa Rita Mountains, AZ. Habitus, dorsal aspect, ABL = 4.39 mm 3 Pseudomorpha penablanca sp. n., female holotype, CAS 8111005; Pena Blanca Lake, Arizona. Habitus, dorsal aspect, ABL = 6.37 mm 4 Pseudomorpha pima sp. n., female holotype, CAS 8111006; Madera Canyon (lower), Santa Rita Mountains, Arizona. Habitus, dorsal aspect, ABL = 6.76 mm 5 Pseudomorpha santacruz sp. n., male holotype, ADP 111870; Madera Canyon, Santa Rita Mountains, Arizona. Habitus, dorsal aspect, ABL = 5.78 mm 6 Pseudomorpha santarita sp. n., male holotype, ADP 110817; Pajarito Mountains, AZ. Habitus, dorsal aspect, ABL = 5.33 mm.

Figure 7 - 12. 7 Pseudomorpha huachinera sp. n., male holotype, ADP 110112; Arroyo El Cocono, Sierra Huachinera, Sonora, Mexico. Head, dorsal planar aspect 8 Pseudomorpha patagonia sp. n., male paratype, ADP 110694; Madera Canyon, Santa Rita Mountains, AZ. Head, dorsal planar aspect 9 Pseudomorpha penablanca sp. n., female holotype, CAS 8111005; Pena Blanca Lake, Arizona. Head, dorsal planar aspect 10 Pseudomorpha pima sp. n., female holotype, CAS 8111006; Madera Canyon (lower), Santa Rita Mountains, Arizona. Head, dorsal planar aspect 11 Pseudomorpha santacruz sp. n., male holotype, ADP 111870; Madera Canyon, Santa Rita Mountains, Arizona. Head, dorsal planar aspect 12 Pseudomorpha santarita sp. n., male holotype, ADP 110817; Pajarito Mountains, AZ. A Head, dorsal planar aspect.

Figure 13 - 17. 13 Pseudomorpha huachinera sp. n., male paratype, ADP 110961; Pajarito Mountains, AZ. Male genitalia, median lobe and parameres labeled as in repose in male, A right lateral aspect, B left lateral aspect, and C dorsal aspects. 14 Pseudomorpha patagonia sp. n., male paratype, ADP 110694; Harshaw Creek, Patagonia Mountains, AZ 15 Pseudomorpha santacruz sp. n., male holotype, ADP 111870; Madera Canyon, Santa Rita Mountains, AZ 16 Pseudomorpha santarita sp. n., male paratype, ADP 110388; Santa Rita Ranch, Santa Rita Mountains, AZ 17 Pseudomorpha pima sp. n., female paratype, ADP 109219; Bog Springs, Santa Rita Mountains, AZ. Ovipositor sclerites, Legend: gc 1 gonocoxite 1; gc 2 gonocoxite 2; lt laterotergite; b base of gonocoxite 2; bl blade of gonocoxite 2. Scale lines = 0.5 mm.