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20 BULLETIN OF THE UNIVERSITY OF NEBRASKA STATE MUSEUM Fi g s. 21-33. Left elytron of 21-22, Heterosilpha ramosa, male and female; 23-24, Necrodes surinamensis, male and female; 25-26, Necrophila americana, male and female; 27-28, Oiceoptoma inaequale, male and female; 29-30, O. novaboracense, male and female; 31-32, Thanatophilus lapponicus, male and female; 33, T. truncatus (either sex).
3’. Head may have short setae, but not with stout setae in a distinct row behind eye . . . 5 4. Humerus with small tooth (Figs. 27-30) or acute angle. Elytra without reticulate sculpturing . . . . . . . . . . . . . . . . Oiceoptoma A. Pronotum entirely black . . . . . . . . . . . . . . . . . . . . . . . O. inaequale (Fabr.) A’. Pronotum black with reddish orange margins . . . . O. novaboracense (Forster) 4’. Humerus rounded, lacking tooth. Elytra with reticulate sculpturing . . Heterosilpha 5. Humerus with small tooth (Figs. 31-33). Labrum shallowly emarginate. Mesocoxae widely separated (by about width of mesocoxa) . . . . . . . . . . . . . . . . Thanatophilus A. Elytra smooth, lacking costae (Figs 33, 64) . . . . T. truncatus (Say) A’. Elytra tuberculate, with costae (Figs. 31, 32, 62) . . . . T. lapponicus (herbst) 5’. Humerus rounded. Labrum deeply emarginate. Mesocoxae narrowly separated (by about half or less width of mesocoxa) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aclypea THE CARRION BEETLES OF NEBRASKA 21 Key TO The GeNeRA AND SPe- CIeS OF ThIRD INSTAR lARVAe OF SIlPhINAe IN NeBRASKA (modified from Anderson and Peck 1985) 1. Urogomphi distinctly longer than 10th abdominal segment (by at least half their length) (Figs. 34-35). Sternum of 2nd abdominal segment with 3 large sclerites . . 2 1’. Urogomphi equal to or slightly longer than 10th abdominal segment (Figs. 36-39). Sternum of 2nd abdominal segment with 1 large sclerite . . . . . . . . . . . . . . . . . . . . . . . 3 2. Basal segment of urogomphus up to twice as long as 10th abdominal segment (Fig. 35). Dorsal color dark brown to black . . . . . . . . . . . . . . . . . . . . . . . Thanatophilus 2’. Basal segment of urogomphus more than twice as long as 10th abdominal segment (Fig. 34). Dorsal color reddish brown . . . . . . . Necrodes surinamensis (Fabr.) 3. Second segment of antenna with 1 large sensory cone (Fig. 40). Prothoracic tergite Fi g s. 34-39. Abdominal apex of larval silphine (dorsal view): 34, Necrodes surinamensis; 35, Thanatophilus truncatus; 36, Necrophila americana; 37, Oiceoptoma novaboracense; 38, Aclypea bituberosa; 39, Heterosilpha ramosa (Figs. 38-39 after Anderson and Peck 1985).
Page 2 and 3: Cover. An adult burying beetle, Nic
Page 4 and 5: Bulletin of the University of Nebra
Page 7 and 8: Bulletin of the University of Nebra
Page 9 and 10: Extensive collecting was conducted
Page 11 and 12: THE CARRION BEETLES OF NEBRASKA 5 F
Page 13 and 14: the spring and fall. Drought freque
Page 15 and 16: they are referred to as “pampas,
Page 17 and 18: THE CARRION BEETLES OF NEBRASKA 11
Page 19 and 20: ea s t e r n de c i d u o u s Fo r
Page 21 and 22: insects are attracted to a cadaver
Page 23 and 24: The jar or container should not be
Page 25: SUBFAMIly SIlPhINAe The Silphinae i
Page 29 and 30: In a report by Lawrence Bruner on t
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 and 80:
ADAMS CO. (30): No data; ARTHUR CO.
Page 81 and 82:
and basal margins wide; anterior tr
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
Page 105 and 106:
THE CARRION BEETLES OF NEBRASKA 99
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