Species diversity of entomophilous plants and flower-visiting insects is sustained in the field margins of sunflower crops Author Torretta, Juan Pablo CONICET - Cátedra de Botánica Agrícola, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C 1417 DSE, Buenos Aires, Argentina; Author Poggio, Santiago L. IFEVA / CONICET - Cátedra de Producción Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, C 1417 DSE, Buenos Aires, Argentina text Journal of Natural History 2013 2013-01-15 47 3 - 4 139 165 http://dx.doi.org/10.1080/00222933.2012.742162 journal article 10.1080/00222933.2012.742162 1464-5262 4631907

Table 2. Number of species of entomophilous plants and floral visitors sampled in sunflower field margins.

Sites (acronyms)
Plants are grouped according to their status (natives and exotics) and life forms (forbs and no-forbs). Floral visitors were arranged according the five represented taxonomical orders.
	Sáenz	Reconquista	Sunchales	Paraná	Paunero	Roca	Hortensia	Balcarce	Total
	Peña (SP)	(RE)	(SU)	(PA)	(P)	(RO)	(HO)	(BA)
Entomophilous plants
Number of weed species	37	26	31	17	13	36	35	18	149
Number of weed species with	13 (35)	12 (46)	21 (68)	11 (65)	9 (69)	22 (65)	19 (54)	9 (50)	43 (41)
floral visitors (% of total)
Status
Natives	35	23	20	14	9	18	16	3	106
Exotics	2	3	11	3	4	18	19	15	43
Life form
Forbs	22	21	11	7	9	33	33	18	127
No forbs	15	5	20	10	4	3	2	0	22
Floral visitors
Total species (families)	25 (4)	69 (22)	44 (15)	49 (15)	30 (16)	50 (19)	58 (20)	13 (9)	247 (36)
Hymenoptera	24 (3)	33 (7)	20 (5)	24 (5)	19 (8)	33 (8)	40 (9)	3 (2)	151 (10)
Diptera	1 (1)	29 (9)	18 (7)	16 (5)	7 (4)	10 (4)	10 (5)	5 (3)	61 (13)
Lepidoptera		7 (6)	6 (3)	7 (3)	2 (2)	3 (3)	4 (2)	4 (3)	26 (7)
Coleoptera				1 (1)	2 (2)	4 (4)	4 (3)	1 (1)	8 (5)
Blattaria				1 (1)			1 (1)		1 (1)