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74 BULLETIN OF THE UNIVERSITY OF NEBRASKA STATE MUSEUM Wildlife Area; THOMAS CO. (60): Halsey Forest Reserve; WASHINGTON CO. (2): Ft. Calhoun; WEBSTER CO. (1): Red Cloud; YORK CO. (1): No data. Temporal Distribution. Rangewide: February to October (Peck and Kaulbars 1987). Nebraska: April (5), May (11), June (230), July (1,944), August (2,221), September (296), October (270), November (3). The large numbers in July and August reflect, in part, a concerted trapping program in Lincoln County in 1995. Remarks. Nicrophorus marginatus cannot be separated from N. obscurus and N. guttula based on overall appearance. It can be separated from these other two species because it has short setae (shorter than those on humerus) on the anterior face of the procoxa in the basal half; the two other species have long setae (as long or longer than those on humerus). The larval stage was described by Anderson (1982b), and a brief larval diagnosis was given by Anderson and Peck (1985). Adults become active in the spring when the weather is consistently warm; most adults become active in June in Nebraska. Reproduction occurs in June and July, and the new generation of adults appears in July and August. Overwintering is in the adult stage. According to Peck and Kaulbars (1987), most collections have been from open fields, montane meadows, prairies, and desert woodlands. This species is abundant in the grasslands of western Nebraska. Lomolino et al. (1995) and Lingafelter (1995) demonstrated that this species shows a strong preference for meadows or open, grassy areas. This species is probably diurnal even though some specimens have been taken at lights. I and my students have taken N. marginatus in large numbers using baited pitfall traps. Clark (1895) observed extensive feeding by adults on fly larvae at carrion. Nicrophorus mexicanus Matthews (Figs. 81, 88, 114-115) Necrophorus mexicanus Matthews 1888: 91. Diagnosis. Length 14.0-20.8 mm. Head: Club of antenna with basal segment black, remaining segments orange. Thorax: Pronotum subquadrate, both anterior and posterior angles rounded. Lateral Fig. 114. Nebraska distribution of Nicrophorus marginatus, N. mexicanus, N. obscurus.
and basal margins wide; anterior transverse impression deep, distinct (Fig. 81). Metasternum with dense, dark brown pubescence. Metepim-eron with small, central patch of dark brown setae. Elytra: Each elytron with two transverse, orange maculae, anterior orange macula joined at suture, posterior macula long but not quite reaching suture. Epipleuron orange with anterior black band crossing onto it (Fig. 88). Legs: Posterior tibia straight. Anterior face of procoxa with minute setae on basal half. Distribution. Nicrophorus mexicanus was formerly known from the southern Rocky THE CARRION BEETLES OF NEBRASKA 75 Fig. 115. Nicrophorus mexicanus Matthews. Mountain states southward through Mexico to El Salvador (Peck and Kaulbars). The specimen listed below from central Nebraska represents a NEW STATE RECORD and represents a range extension from the closest known current collection localities in central Colorado. Locality Records (Fig. 114). 1 Nebraska specimen examined. CUSTER CO. (1): 17 mi. E. Anselmo. Temporal Distribution. Rangewide (including Mexico): All months. United States: May to October (Peck and Kaulbars 1987). Nebraska: July (1).
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Cover. An adult burying beetle, Nic
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Bulletin of the University of Nebra
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Bulletin of the University of Nebra
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Extensive collecting was conducted
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THE CARRION BEETLES OF NEBRASKA 5 F
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the spring and fall. Drought freque
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they are referred to as “pampas,
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THE CARRION BEETLES OF NEBRASKA 11
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ea s t e r n de c i d u o u s Fo r
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insects are attracted to a cadaver
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The jar or container should not be
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SUBFAMIly SIlPhINAe The Silphinae i
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3’. Head may have short setae, bu
Page 29 and 30: In a report by Lawrence Bruner on t
Page 31 and 32: THE CARRION BEETLES OF NEBRASKA 25
Page 33 and 34: certain areas of the Pacific Northw
Page 37 and 38: distributed throughout the eastern
Page 39 and 40: on the dried remains of hide, sinew
Page 41 and 42: elytra are exposed and are a bright
Page 43 and 44: will distinguish the larva of this
Page 45 and 46: GARDEN CO. (2): Crescent Lake; GOSP
Page 47 and 48: Creek Reservoir, Red Willow Reservo
Page 49 and 50: Adults in the genus Nicrophorus are
Page 51 and 52: A few field studies have shown that
Page 55 and 56: preparing the feeding cavity of the
Page 57 and 58: is allocated to the parents’ own
Page 59 and 60: oods reared on small carcasses by f
Page 61 and 62: 5. Anterior face of procoxa with sh
Page 65 and 66: KEY TO THE SPECIES OF THIRD INSTAR
Page 67 and 68: in north-central Nebraska (Ratcliff
Page 69 and 70: U.S. Fish and Wildlife Service (199
Page 71 and 72: factors responsible for the decline
Page 73 and 74: Mexico) had relatively low efficien
Page 75 and 76: face of the procoxa in the basal ha
Page 77 and 78: Kaulbars 1987). In Nebraska, this s
Page 79: ADAMS CO. (30): No data; ARTHUR CO.
Page 83 and 84: narrow; basal margin wide; anterior
Page 85 and 86: Mormon Island; HARLAN CO. (17): Rep
Page 87 and 88: ADAMS CO. (2): No data; CLAY CO. (1
Page 89 and 90: Park; SALINE CO. (4): Swan Creek; S
Page 91 and 92: LITERATURE CITED ABBOTT, C.E. 1927a
Page 93 and 94: (Nicrophorus americanus) in Oklahom
Page 95 and 96: HERSCHEL, J.D. 1807. Die Europäisc
Page 97 and 98: (Nicrophorus spp.). Journal of the
Page 99 and 100: REED, H.B. 1958. A study of dog car
Page 101 and 102: TRUMBO, S.T. 1990a. Reproductive be
Page 103 and 104: GLOSSARY (modified from Torre-Bueno
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