great lakes entomologist - Michigan Entomological Society

Vol. 22, No. 1

Spring 1989

THE

GREAT LAKES

ENTOMOLOGIST

PUBLISHED BY

THE MICHIGAN

ENTOMOLOGICAL

SOCIETY

THE GREAT LAKES ENTOMOLOGIST

Published by the Michigan Entomological Society

No. 1

Volume 22 ISSN 0090·0222 TABI"E OF CONTENTS

Two new genera of Hemisarcoptidae (Acari: Astigmata) from the Huron Mountains of northern Michigan Barry M. OConnor and Marilyn A. Houck ............ . ............... . Some aspects of the biology of a predaeeous anthomyiid fly, Coenosia tigrina Francis A. Drummond, Eleanor Groden, D.L Haynes and Thomas C. Edens .....................................................

II

State records and confirmations of Arkansas flat bugs (Heteroptera: Aradidae) Steven J. Taylor and J.E. McPherson ...................................

19

Insect pests associated with birdsfoot trefoil, Lotus corniculatus, in Wisconsin Mark S. Wipfli, John L Wedberg, David B. Hogg, and Thomas D. Syverud ...................................................

25

Late lilac, Syringa villosa: New host of the lace bug Leptoypha mutica (Heteroptera: Tingidae) A.G. Wheeler, Jr. .....................................................

35

An annotated list of the Orthoptera of Beaver Island, Lake Michigan R.G. Bland ...........................................................

39.

Trimerotropis huroniana (Orthoptera: Acrididae), a new record for Wiseonsin Harvey E. Ballard, Jr. ......................... . . . . . . . . . . . . . . . . . . . . . . . .

45

Estimating parasitism of Colorado potato beetle eggs, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae), by Edovum puttleri (Hymenoptera: Eulophidae) E. Groden, F.A. Drummond, R.A. Casagrande, and J.H. Lashomb

47

A new location for Valgus hemipterus (Coleoptera: Scarabaeidae) Joseph Mahar .........................................................

55

COVER ILLUSTRATION Papilio glaucus canadensis butterflies puddling at a site near Agawa Canyon, Ontario. Photograph by John Hicks.

THE MICHIGAN ENTOMOLOGICAL SOCIETY 1988-89 OFFICERS President . President-Elect Executive Secretary Journal Editor Newsletter Editor

Phil Watson Richard 1. Snider M. C. Nielsen Mark F. O'Brien Robert Haack

The Michigan Entomological Society traces its origins to the old Detroit Entomological Society and was organized on 4 Novemher 1954 to " ... promote the seience of entomology in all its branches and by all feasible means, and to advance cooperation and good fellowship among persons interested in entomology." The Society attempts to facilitate the exchange of ideas and information in both amateur and professional circles, and encourages the study of insects by youth. Membership in the Society, which serves the North Central States and adjacent Canada, is open to all persons interested in entomology. There are four paying classes of membership: Student (including those currently enrolled as college sophomores}-annual dues $4.00 Active-annual dues $8.00 Institutional-annual dues $20.00 Sustaining--annual contribution $25.00 or more Lif~$160.00

Dues are paid on a calendar year basis (Jan. J-Dec. 3J). Memberships accepted before July I shall begin on the preceding January I; memberships accepted at a later date shall begin the following January I unless the earlier date is requested and the required dues are paid. All members in good standing receive the Newsletter of the Society, published quarterly. All Active and Sustaining Members may vote in Society affairs. All dues and contributions to the Society are deductible for Federal income tax purposes.

SUBSCRIPTION INFORMATION Institutions and organizations, as well as individuals not desiring the henefits of memhership, may subscribe to The Great Lakes Entomologist at the rate of $15.00 per volume. The journal is published quarterly; subscriptions are accepted only on a volume (4 issues) basis. Single copies of The Great Lakes Entom%gist are available at $4.25 each, with a 20 percent discount for 25 or more copies sent to a single address. MICROFILM EDITION: Positive microfilm copies of the current volume of The Great Lakes Entomologist will he available at nominal cost, to members and bona fide subscrihers of the paper edition only, at the end of each volume year. Please address all orders and inquiries to University Microfilms, Inc., 300 Zeeb Road, Ann Arhor, Michigan 48106, USA. Inquiries about back numbers, subscriptions and Society business should be directed to the Executive Secretary, Michigan Entomological Society, Department of Entomology, Michigan State University, East Lansing, Michigan 48824, USA. Manuscripts and related correspondence should be directed to the Editor (see inside back cover). Copyright

1989. The Michigan Entomological Society

1989


TWO NEW GENERA OF HEMISARCOPTIDAE

(ACARI: ASTIGMATA) FROM THE HURON MOUNTAINS OF

NORTHERN MICHIGAN

Barry M. OConnor i and Marilyn A. Houck2 ABSTRACT Two new genera and species of Hemisarcoptidae, Superioropus huronmontanus and Huronopus michiganensis are described from deutonymphs phoretic on ichneumonid wasps from the Huron Mountains, Marquette County, Michigan.

The family Hemisarcoptidae is a poorly known group of astigmatid mites associated with a wide variety of insects. OConnor (1982) diagnosed the family and recognized 5 genera: Hemisarcoptes, species of which are predators of diaspidid scale-insects with deutonymphs phoretic on coccinellid beetles of the genus Chilocorus; Linobia, the single species of which is an ectoparasite of the chrysomelid beetle, Chrysomela populi in Europe; Congovidia, most species of which are known only from deutonymphs phoretic on a variety of insect groups from Europe, Africa and South America; Nanacarus, a Holarctic genus known from polypore fungi and synanthropic habitats; and Divilia, with a single described species from ants in the Soviet Union. Volgin and Mironov (1979) described the genus Nanacaroides from a single species from a polypore fungus from Siberia. OConnor (1984) regarded this genus as a synonym of Congovidia, however, this synonymy was based upon ancestral character states retained in both genera. We now believe Nanacaroides should be regarded as a valid genus. Finally, Fain (1987) added a seventh genus, Espletiacarus. described from a deutonymph collected from flowers of Espletia incana (Asteraceae) in Colombia. Fain (1988) has given additional information on character states in some of these genera. To date, only 2 species of Hemisarcoptidae have been described from the Nearctic region, Hemisarcoptes malus (Shimer 1868) and H. cooremani (Thomas 1964). As part of a systematic revision of the family, we have collected free living stages and phoretic deutonymphs representing a number of new species in North America. MATERIALS AND METHODS Insects were collected on the property of the Huron Mountain Club by sweep net, Malaise traps and pitfall traps during the summers of 1986 and 1987. The site consists of mixed deciduous and coniferous forest, and attempts were made to collect in as many habitat types as possible. Detailed descriptions of the habitats are included in Wells and Thompson (1976) and Gosling (1986). Whenever possible, insects were collected and

IMuseum of Zoology and Department of Biology, The University of Michigan, Ann Arbor, Michigan 48109-1079. 2Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson,

Arizona 85721

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Vol. 22, No. 1

stored in individual vials to prevent contamination. Mites were mounted in Hoyer's medium; insect hosts were labelled with voucher numbers and identificd by specialists. RESULTS From our extensive collections from the Huron Mountains, we have identified 16 species of Hemisarcoptidae, all previously undescribed. Species in the genera Congov idia, Nanacarus and Divilia will be treated separately. Due to the presence of combinations of ancestral and derived character states, two species could not be included within the named genera without seriously altering generic concepts. These new taxa are described below. In the descriptions, all lengths are given in micrometers (f.Lm). Superioropus New Genus

This genus is known only from the deutonymph. Diagnosis: hemisarcoptid mites with deutonymphs rctaining the following ancestral character states: propodosornal and hysterosomal sclerites with linear sculpturing; dorsal hysterosomal chaetotaxy complete, including setae dl; gnathosoma with subcapitulum, separate palps and palpal solenidia; anterior coxal apodemes II not connected to sternum by surface sclerotization; posterior median apodeme free anteriorly, simple posteriorly; tibiae I-II with apical triangular projections; leg setation: tarsi 6-6-4-6, tibiae 1-1-1-0, genua 2-2-0-0, femora 1-1-0-1, trochanters 1-1-1-0, Solenidion (,t)-3 of tarsus I subapical; solenidion IT II present Derived character states of the known species include the loss of solenidia (,t)-2 from tarsus I and 4> from tibia III, and the loss of the famulus from tarsus 1. Type-species: Superioropus huronmontanus n. sp. by original designation. Superioropus huronmontanus New Species

Deutonymph (figs. 1-7). Body ovoid, length and width of holotype 202 x 145, of two paratypes 200 x 150 and 205 x 139. Gnathosoma with subcapitulum and palps well-developed; palpal solenidia long, gnathosomal setae absent. Venter (fig. 1). Coxal fields unsclerotized. Anterior apodemes of coxal fields I fused to form sternum; posterior apodemes I fused to anterior apodemes II; anterior apodemes II with surface sclerotization directed laterally from medial apices; posterior apodemes II with surface sclerotization along 3/4 of length; apodemes III directed antero-medially, medial apices not closely associated with posterior median apodeme; anterior apodemes IV fused with median apodeme; posterior apodemes IV underlying anterior margin of attachment organ; median apodeme ending simply. Setae of coxal fields I and III absent, represented by vestigial alveoli; setae of coxal fields IV filiform. Genital opening posterior to coxal fields IV; anterior genital setae long and filiform, positioned at junction of apodemes IV and median a odeme; posterior genital setae filiform, f1anking anterior end of genital opening; genit Hae two segmented, elongate and pointed medially. Attachment organ broadly ov , with raised margin; anterior suckers stalked, median suckers relatively small, similar in size to anterior suckers; lateral conoidal setae slightly posterior to a plane connecting centers of median suckers; posterior conoidal setae with bases almost contiguous; anterior, lateral and posterior median cuticular suckers well developed. Dorsum (fig. 2). Dorsum largely covered by propodosomal and hysterosomal sclerites; scjugal furrow well developed, separating sclerites. Propodosomal and hysterosomal sclerites with a pattern of coarse furrows and smaller pits. Ocelli present near apex of propodosomal sclerite, overlying single pigment spot. Dorsal setation complete for family (ve absent from ancestral astigmatid mite pattern), setae dl present but shorter than most

1989


3

)

! l

50 tm

\

\

1 Figure 1.

Superioropus huronmontanus n. sp. deutonymph, venter.

other dorsal setae. All dorsal setae filiform, supracoxal setae of legs I slightly inf1ated basally. Cupules ia between bases of setae 1I and h; im ventral to setae 13; ip not observed; ih ventral, near postero-Iateral margins of attachment organ. Opisthonotal gland openings between setae 12 and 13.

4


50

Vol. 22, No. 1

~m

2 Figure 2.

Superioropus huronmontanus n. sp., deutonymph, dorsum.

Legs (figs. 3-7, figured from femur-tarsus). Legs similar in structure to other Hemisarcoptidae, all segments free except tibia-tarsus IV fused. Tibiae I-II bear triangular scIerotized processes at their apices. Setation: trochanters 1-1-1-0, all setae filifonn; femora 1-1-0-1, all setae filiform, seta wF IV extending beyond the apex of leg IV; genua 2-2-0-0, setae cG, mG filifonn; tibiae 1-1-1-0, all setae filifonn; tarsi 6-6-4-6, tarsi I-II with ventral setae la, wa, and ra filiform, la and ra very long, dorsal setae d and e coupled, setae d and f short and filifonn, e foliate; tarsus HI with setae d, rand w filifonn and ventral seta s a heavy spine; tarsus IV with 6 filifonn setae: wand d very long and apical, with w (length 211) longer than d (length 160), three thin filifonn setae (s, p and q, lengths 10-12) more proximo-ventral, and a final, longer filifonn seta (r, length 23) even more proximal. Solenidiotaxy: tarsi 2-1-0-0, tarsus I with w-l basal, w-3 positioned slightly more than


1989

5

ra

Figure 3-7. Superioropus huronmontanus n. sp., deutonymph. 3. Leg I dorsal. 4. Leg II dorsal. 5. Leg III dorsal. 6. Tarsus III ventral. 7. Leg IV ventral.

2i3 the distance from base to apex of tarsus, w-2 absent, position marked by a thin spot in the cuticle; tarsus II with w basal, more spindle shaped than w-l of tarsus 1. Tibiae 1-1-0-0; CONVENTIONAL

40

e

l

-.

. - - CONVENTIONAL NO SPRAY

en w

30

:::i u..

20

a: w

10

(!)

i=

0

JUNE

JULY

AUG

SEPT

OCT

1982 30

a..

«

a:

I

-.

20

en w ..J

u..

10

a:

w

(!)

i=

0'.-0'-0

o~~~~~~~~·~··~·-~···~~~

JUNE Figure 2.

JULY

AUG

SEPT

OCT

Relative abundance of Coenosia tigrina adults during 1981 and 1982.

were not found to be significantly different (z .98, n.s., a .05, df = 30). A pooled estimate of the association (r + .72 ± .12, P .001) indicated that there is sufficient evidence to suspect a positive correlation between onion cull density and earthworm density. Therefore, growers' harvest practices may greatly influence the population dynamics of the tiger fly. Depending on the affinity the earthworms have for onions and the maximum distance of horizontal migration, it may be possible to manipulate the density of culls in such a manner that predation and survival of the tiger fly is increased. In both 1981 and 1982, tiger fly trap catches suggest three distinct generations from the beginning of June until September (Fig. 2). The first generation peaked on approximately 10 June in 1981 and in 1982. The second generation peaked on ca. 13 July in 1981 and 12 July in 1982. Not enough of the incidence curve could be constructed to determine the date or peak third generation occurrence in 1981, but in 1982 it appears peak abundance


16

Vol. 22, No.1

Table 2. Adult Tigerfly Abundance b in 1981 and 1982. Treatment

Year 1981 1982

Control

High Input A

High Input B

Organic

0.92 ± 2.06***b 1.08 ± 1.24***

0.62 ± 1.45*** 0.33 ± 0.65***

0.08 ± 0.28*** 0.08 ± 0.28***

16.60 ± 20.00 7.33 ± 9.54

Analysis of Variance Source

DF

SS

MS

Total Treatment Years Treatment X Years Error

63 3 I

226.43 189.84 0.47

63.28 0.47

109.46 0.82

3 56

3.74 32.37

1.25 0.58

2.15

F

Sig. Level 0.001 0.37 0.11

dMean number of adult C. tigrina per trap per collection date. b***Significantly different between years at p = 0.001.

of adults occurred between 6 and 20 September. Since it is known that the tiger fly overwinters as a larva, a generation of adults probably occurs in April and May. Tiger fly populations in both years are much higher in the organic field than either the control or high input fields (Table 2). The low tiger fly trap catches in the ,'ontrol field in 1981 and 1982 suggest that it may take more than two years for a population to recover after the cessation of chemical input. Also, the control site had little "structure" relative to the organic site which was intercropped and had field borders supporting diverse biotic systems (Motyka and Edens 1984). Tomlin et al. (1985) conducted a study in Ontario, Canada, where they caught tiger fly adults only from onion fields which did not receive pesticides over the two years of the study period. Management practices in commercial onion fields in Michigan may have both detrimental and beneficial effects on the tiger fly. Direct pesticide-induced mortality of C. tigrina adults was investigated by Carruthers et al. (1985). They found that three commonly used herbicides (Chloro-IPC, nitrofen, and CDAA) and two fungicides (maneb and chlorothalanil) had no effect on mortality at recommended field application rates. The LC so of Malathion for the tiger fly was ca. one and a half times higher on a numerical basis than that of the seed corn maggot fly and almost six times higher than that of the onion maggot fly. However, there appears to be little residual activity of malthion. Residue five hours after application resulted in only ten percent mortality. Mortality was less than one percent ten hours after application. However, some Michigan onion growers apply insecticide as frequently as every three days during portions of the season (Whitfield et al. 1985) and C. tigrina is certainly detrimentally affected by insecticide applications relative to onion maggot flies. In conclusion, we have provided a preliminary data set which supports previously published laboratory studies showing the deleterious effects of pesticides upon the tiger fly. We are aware that the proper design for a study aimed at quantifying the impact of onion production practices upon tiger fly populations needs to be replicated across regions. In the study, however, limited resources and a lack of organic onion farms prevented us from carrying this out. Admittedly, this does not allow us to draw strong conclusions about differences in abundance between fields. Future studies aimed at elucidating this relationship between the tiger fly and its prey, earthworm populations,

1989


17

and cropping practices may make it possible for less damaging management practices to be implemented in commercial onion production.

ACKNOWLEDGMENTS We would like to thank Mr. Fred Warner and Me. William Taft for assisting in the collection of pitfall trap data and Me. Neal Newman for assisting in the collection of the earthworm data. We also thank Ms. Becky Mather for typing the manuscript.

LITERATURE CITED Carruthers, R. 1., G. H. Whitfield, and D. L. Haynes. 1985. Pesticide-induced mortality of natural enemies of the onion maggot, Delia antiqua (Dip.: Anthomyiidae). Entomophaga 30:151-161. Drummond, F. A. 1982. Post-harvest biology of the onion maggot. Hylemya antiqua (Meigen). M.S. Thesis. Michigan State University. 353 pp. Drummond, F. A., E. Groden, and R. J. Prokopy. 1982. Comparative efficacy and optimal positioning of traps for monitoring apple maggot flies (Diptera: Tephritidae). Environ. EntomoL 13:232-235. Edwards, C. A. and J. R. Lofty. 1972. Biology of Earthworms. Bookworm Publishing Co., London, England. 283 pp. Groden, E. 1982. The biology of two parasitoids of the onion maggot, Hylemya antiqua (Meig.), and the potentials for management. M.S. Thesis. Michigan State University. 152 pp. Hobby, B. M. 1931. The prey of Coenosia tigrina F. Proc. EntomoL Soc. London 6:13-15. Hobby, B. M. 1934. Prey of Coenosia tigrina F. (Diptera: Anthomyiidae). J. EntomoL Soc. S. EngL 1:69-77. Hopkins, A. R. and V. M. Kirk. 1957. Effects of several insecticides on the English red worm. J. Econ. EntomoL 50:699-700. LeRoux, E. J. and J. P. Perron. 1960. Descriptions of immature of Coenosia tigrina (F.) predation by adults. Can. (Diptera: Anthomyiidae), with notes on hibernation of larvae Entomol. 93:264-96. Miles, M. 1948. Field observations on the bean seed fly (seed corn maggot), Chortophila cilicrura Rond., and C. trichodactyla Rond. Bull. Ent. Res. 38:559-574. Miller, L. A. and R. J. McClanahan. 1960. Life history of the seed corn maggot, Hylemya cilicrura Rond. and H. liturata (Mg.) (Diptera: Anthomyiidae) in southwestern Ontario. Can. Entomol. 42:210-221. Motyka, G. and T. C. Edens. 1984. A comparison of heterogeneity and abundance of pests and beneficials across a spectrum of chemical and cultural controls. Pest Mgmt. Tech. Dept. #4[, Dept. of Entomol., Mich. State Univ. 44 pp. Murchie, W. R. 1956. Survey of the Michigan earthwonn fauna. Pap. Mich. Acad. Sci., Arts, and Letters 151:53-72. Murchie, W. R. 1958. Biology of the oligochaete Eisenia rosea (Savigny) in an upland forest soil of southern Michigan. Am. Mid!. Nat. 66:113-131. Perron, J. P. 1972. Effects of some ecological factors on populations of the onion maggot, Hylemya antiqua, under field conditions in southwestern Quebec. Ann. Soc. Entomo!' Que. 17:20-47. Perron, J. P. and 1. LaFrance. 1952. A note on a dipterous predator of the onion maggot, Hylemya antiqua (Mg.). Can. EntomoJ. 84:112. Perron, J. P. and J. LaFrance. 1956. Notes on Coenosia tigrina (F). (Diptera: Anthomyiidae) mainly on habits and rearing. Can. Entomo!. 88:608-11. Perron, J. P. and J. LaFrance. 1961. Notes on the life history of the onion maggot, HyJemya antiqua (Meig.) (Diptera: Anthomyiidae), reared in field cages. Can. Entomol. 93:101-106. SAS Institute. 1985. SAS user's guide: statistics. SAS Institute, Cargo N.C. Stringer, A. and C. H. Lyons. 1974. The effect of benomyl and thiophantemethyl on earthworm populations in apple orchards. Peslic. Sci. 5: [89-196.

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Steel, R. G. D. and J. H. Torrie. 1980. Principles and Procedures of Statistics: A Biometrical Approach. McGraw-Hili Book Co., N.Y., N.Y. 633 pp. Thomas, G. D. 1967. Natural enemies of the face fly, Musca autumnalis DeGeer, in Missouri, Ph.D. Thesis, University of Missouri, Columbia. 131 pp. Tomlin, A. D" 1. J, Miller, C. R. Harris. and J. H. Tolman. 1985. Arthropod parasitoids and predators of the onion maggot (Diptera: Anthomyiidae) in Southwestern Ontario. 1. Econ. Entomol. 78:975-981. Whitfield, G. H., R. 1. Carruthers, and D. L. Haynes. 1985. Phenology and control of the onion maggot tDiptera: Anthomyiidae) in Michigan onion production. Agriculture, Ecosystem and Environment 12 (1984/1985):189-200. Yahnke, W, E. and 1, A. George. 1972. Earthworms as prey for larvae of Coenosia ligrina. J, Econ, Entomoi. 65:1478-79.

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19

STATE RECORDS AND CONFIRMATIONS OF ARKANSAS FLAT

BUGS (HETEROPTERA: ARADIDAE)

Steven J. Taylor and J. E. McPherson' ABSTRACT Eight aradid species are reported for the first time from Arkansas including Aneurus pygmaeus, Aradus cillcticornis, Aradus crenatus, Qui/nus niger, Mezira granulata, Mezira lobata, Mezira sayi, and Neuroctenus simplex. The presence of Aradus acufus, Aradus falleni, and Aradus robustus in Arkansas is confirmed.

Few records have been published on Arkansas Aradidae. Parshley (1922) reported Aradus acutus Say and Aradusfalleni Still from the state and Drake and Kormilev (1958) extended the range of Acaricoris ignotus Harris and Drake from Louisiana, Mississippi, and Georgia to include Arkansas. Leschen and Taylor (1987) found Aradus robustus Uhler in Arkansas and provided information on its biology. Because information on these bugs in Arkansas is so limited, a faunal survey was conducted from 1984 to 1987. A total of 1,125 specimens of 11 species was collected, most by hand picking. For the listing of these specimens below, data were collected by SJT unless stated otherwise. Specimens collected by SJT were found under bark of dead hardwoods unless stated otherwise. Collections from under bark of dead Quercus sp. are indicated by UBDQ. Numbers of adult males and females and additional host plant data are indicated in parentheses following each locality. Cadron Settlement Park, Quail Restoration Area, and Bell Slough Wildlife Management Area, the most frequent collection localities, are indicated by CSP, QRA, and BSWMA, respectively. Immature stages were not included in counts since they cannot be reliably identified; however, immatures often outnumbered adults at various sites. The sequence of aradid taxa follows Kormilev and Froeschner (1987). Specimens are deposited in the SJT collection and the Southern Illinois University Entomology Collection (SIUEC). ANEURINAE Aneurus pygmaeus Kormilev is known from Florida, Georgia, Texas, and California (Picchi 1977), Here we rcport material representing a northern range extension for the species and the first record of Aneurus in Arkansas. FAULKNERCo.:CSP, 12-VI-85 (4 00, 3 S? S?); 13-VI-85 (l S?), S. andJ. D. Taylor, coil.; I-V-86 (4 00,7 S?