Effects of fragmentation on a distinctive coastal sage scrub bee fauna revealed through incidental captures by pitfall traps
Journal of Insect Conservation
Keng-Lou James Hung*, John S. Ascher, Jason Gibbs, Rebecca E. Irwin and Douglas T. Bolger
*Corresponding author. Department of Biological Sciences, Dartmouth College, Hanover, NH 03755. Current address: Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California, San Diego, La Jolla, CA 92093-
0116. <kenglou.hung@gmail.com>
Online Resource 1:
Map of the study area produced using Google Earth (© Google 2015). Four reserve plots (dark circles) in the northwest are located in Mission Trails Regional Park (northernmost point at N32.8274, W117.0510). The four reserve plots in the southwest are located within the Otay-Sweetwater (northernmost point at N32.7318, W116.9549). The Otay-Sweetwater plots form a cluster in which spatial autocorrelation may be possible; however, analyses that are conducted with the exclusion of any three of the four data points in the cluster yield results qualitatively similar to analyses of the full dataset. Thus, we have chosen to report the results from the analyses of the full dataset.
1

Effects of fragmentation on a distinctive coastal sage scrub bee fauna revealed through incidental captures by pitfall traps
Journal of Insect Conservation
Keng-Lou James Hung*, John S. Ascher, Jason Gibbs, Rebecca E. Irwin and Douglas T. Bolger
*Corresponding author. Department of Biological Sciences, Dartmouth College, Hanover, NH 03755. Current address: Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California, San Diego, La Jolla, CA 92093-
0116. <kenglou.hung@gmail.com>
Online Resource 2: Native bee species and morphospecies collected via pitfall traps in coastal sage scrub habitats of southwestern San Diego County, California, USA. Asterisks (*) denote species represented only by records from outside of San
Diego County in queried institutional databases, and daggers (†) denote species represented by fewer than 50 individuals in institutional databases. Institutional databases were obtained from the American Museum of Natural History, the US Department of Agriculture Bee Biology and Systematics Laboratory, the Kansas Natural History Museum Snow Entomology Collection, and the University of California Riverside Entomology Research Museum, and include specimens collected using all available collecting methods (i.e., not limited to pitfall samples). The abbreviation “nr.” means “near” or “similar to,” suggesting a species related to the specific epithet given and “cf.” means “compare to,” suggesting uncertainty in the identification.
# collected # institutional
Family Species
(reserve / fragment) records (including non-SD records)
Andrenidae Andrena cryptanthae Timberlake
Andrena osmioides † Cockerell
1 / 0
0 / 3
121
19
Andrena timberlakei
Andrena nr. subtilis
*† Cockerell 21 / 11
1 / 0
18
Calliopsis rhodophila Cockerell
Macrotera tristella (Timberlake)
41 / 129
74 / 56
64
131
Apidae
Perdita claypolei Cockerell
Perdita interrupta Cresson
Perdita sp. 1
Anthophora urbana Cresson
Anthophorula nitens (Cockerell)
3 / 4
3 / 1
0 / 1
1 / 0
4 / 0
821
267
8110
129
Anthophorula torticornis *† (Cockerell)
Bombus californicus Smith
Bombus vosnesenskii Radoszkowski
Ceratina acantha Provancher
Ceratina arizonensis Cockerell
79 / 115
5 / 4
2 / 1
2 / 2
48 / 131
30
1258
2332
1410
900
Ceratina nanula Cockerell
Diadasia australis (Cresson)
Diadasia bituberculata (Cresson)
Diadasia diminuta
Diadasia laticauda Cockerell
Diadasia martialis Timberlake
Diadasia ochracea (Cockerell)
Diadasia opuntiae † Cockerell
Diadasia rinconis
Eucera tricinctella
(Cresson)
Cockerell
*† (Timberlake)
0 / 2
7 / 12
2 / 1
1 / 0
6 / 3
2 / 1
1 / 1
0 / 1
5 / 13
8 / 0
7302
954
445
4332
384
194
1457
29
1835
6
Eucera cf. virgata
Melissodes communis Cresson
Melissodes plumosa † LaBerge
Melissodes tessellata LaBerge
3 / 1
11 / 13
27 / 40
15 / 36
866
23
51
2

Family
Apidae
Colletidae
Halictidae
Megachilidae
Melittidae
Species
Melissodes velutina † (Cockerell)
Neopasites nr. mojavensis
Tetraloniella davidsoni † (Cockerell)
Tetraloniella pomonae (Cockerell)
Colletes sp. 1
Agapostemon texanus Cresson
Augochlorella pomoniella (Cockerell)
Conanthalictus bakeri Crawford
Dufourea rhamni *† (Michener)
Halictus farinosus Smith
Halictus tripartitus Cockerell
Lasioglossum brunneiventre * (Crawford)
Lasioglossum imbrex *† Gibbs
Lasioglossum incompletum * (Crawford)
Lasioglossum macroprosopum *† Gibbs
Lasioglossum microlepoides * (Ellis)
Lasioglossum nevadense * (Crawford)
Lasioglossum petrellum * (Cockerell)
Lasioglossum punctatoventre * (Crawford)
Lasioglossum sisymbrii (Cockerell)
Lasioglossum cf. avalonense
Lasioglossum cf. impavidum
Lasioglossum cf. nigrescens
Lasioglossum cf. robustum
Lasioglossum nr. actinosum
Lasioglossum nr. incompletum
Lasioglossum sp. 1
Micralictoides ruficaudus * (Michener)
Sphecodes sp. 1
Sphecodes sp. 2
Anthidium jocosum † Cresson
Ashmeadiella sp. 1
Ashmeadiella sp. 2
Atoposmia pycnognatha * (Michener)
Dianthidium dubium Schwarz
Dianthidium pudicum (Cresson)
Hoplitis grinnelli Cockerell
Hoplitis semirubra * (Cockerell)
Hesperapis fuchsi † (Viereck)
Hesperapis rufipes * (Ashmead)
134
94
713
1226
714
307
37
220
70
1127
5348
# institutional records (including non-SD records)
37
2
103
2710
1073
522
39
3226
25996
1718
5
3692
4
11226
3012
129
8 / 17
0 / 1
102 / 85
3 / 4
1 / 0
0 / 1
1 / 0
6 / 6
0 / 2
0 / 4
0 / 10
1 / 0
3 / 9
1 / 0
16 / 11
22 / 37
2 / 3
29 / 4
8 / 7
1 / 0
0 / 1
1 / 0
# collected
(reserve / fragment)
1 / 0
0 / 3
1 / 0
0 / 1
1 / 0
37 / 39
2 / 0
22 / 7
16 / 29
8 / 2
113 / 165
5 / 46
1 / 8
270 / 194
3 / 30
40 / 45
58 / 47
5 / 0
3