Morphological and Genetic Divergence in Three Populations of &lt;I&gt;Anthocoris antevolens&lt;/I&gt; (Hemiptera: Heteroptera: Anthocoridae)

Horton, David; Unruh, Thomas R.; Lewis, Tamera M.; Thomsen-Archer, Kelly

doi:10.1603/0013-8746(2007)100[403:magdit]2.0.co;2

Cited by 5 publications

(3 citation statements)

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“…For example, Anthocoris antevolens White (Heteroptera: Anthocoridae) has a broad range in North America. Comparison of specimens from various regions results in a high degree of morphological variability and uncertainty in differentiating them from the closely related species Anthocoris musculus (Say) ( Horton and Lewis 2005 ; Horton et al 2005 , 2007 , 2008 ). Because the morphologically different populations of A. antevolens are overlapping and sympatric with A. musculus populations, potential inter- and intraspecific matings among all these groups could occur.…”

Section: Introductionmentioning

confidence: 99%

Identity of Two Sympatric Species ofOrius(Hemiptera: Heteroptera: Anthocoridae)

Shapiro

Shirk

Kelley

et al. 2010

Journal of Insect Science

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The minute pirate bugs, Orius insidiosus (Say) and Orius pumilio (Champion) (Hemiptera: Heteroptera: Anthocoridae), are closely related species known to be sympatric in north Florida. Here, male and female genitalia, DNA sequences, and the effects of within- and between-species pairings on egg production and egg development were examined to develop a better understanding of the relationship between these two species. Interspecific matings between the two species did not result in viable progeny. Although there were gross similarities in the morphology of the male parameres (external genitalia) between the two species, the cone in O. pumilio was much broader with a greater spiral twist and the flagellum was longer than in O. insidiosus. Correspondingly, there were differences in the morphology of the copulatory tubes of the females of the two species. In O. insidiosus, the organ was somewhat longer than in O. pumilio and oriented parallel to the abdominal midline, while the copulatory tube in O. pumilio tilted slightly towards the midline. Additionally, the copulatory tube for O. pumilio included a sclerotized basal mound that was not present in O. insidiosus. These morphological differences suggest that successful copulation between these species could be difficult. In contrast to conspecific matings, interspecific matings resulted in few or no eggs laid over a period of two weeks and no viable progeny. Comparison of the 18S ribosomal gene ITS-1 sequences between the two species demonstrated only 91% homology. When yolk protein contents were examined to determine whether reproductive physiology had shifted to full egg production, interspecifically mated females contained amounts of yolk protein comparable to that in fed, but unmated females; this was less than 10% of the yolk protein previously found in fed and conspecifically mated females. These findings together confirm that O. insidiosus and O. pumilio are indeed two separate species.

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Section: Introductionmentioning

confidence: 99%

Identity of Two Sympatric Species ofOrius(Hemiptera: Heteroptera: Anthocoridae)

Shapiro

Shirk

Kelley

et al. 2010

Journal of Insect Science

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“…The corresponding age of the separation of A. kerzhneri from A. antevolens is estimated to be 3.6 myr ago (1.7–5.5 myr ago) (node 4; Figure 2) by BEAST, coinciding with the trans-Beringian vicariance, which may have formed the differentiation observed today (Figure 3). Also, due to the distribution of A. antevolens in the northern and western part of North America (Horton et al 2007), we postulate that the ancestor of A. antevolens and A. kerzhneri migrated from East Asia to North America via the Bering land bridge, and later underwent a vicariance event with the disappearance of the Bering land bridge in Pliocene to Pleistocene. The present disjunct distribution of A. kerzhneri in the Hengduan Mountain regions (A) and A. antevolens in the Nearctic area (E) (Figure 3) is probably the result of the extinction or unknown occurrences of this clade in the intermediate areas.…”

Section: Discussionmentioning

confidence: 91%

“…A. antevolens was suspected to be a complex of species in the Nearctic region in one recent study (Horton et al 2007), which means that A. antevolens may still be undergoing divergence in the Nearctic area. For more accurate dating, more specimens sampling is needed in these areas.…”

Section: Discussionmentioning

confidence: 99%

Biogeographical Origin and Speciation of theAnthocoris nemorumGroup

Li¹,

Liu²,

Ke³

et al. 2012

Journal of Insect Science

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The Anthocoris nemorum group belongs to the Anthocoridae (Hemiptera), and is an important group of predators of agricultural pests. A phylogeny was constructed in conjunction with dispersal-vicariance analysis of the Anthocoris nemorum group species in order to discern the relationships between the phylogeographical structuring of A. nemorum group species, and the effects of the Qinghai-Tibet plateau uplift. The divergence times were estimated using Bayesian inference as implemented in BEAST. A portion of the mitochondrial COI gene (1406 bp) and 16S rDNA (932 bp) were chosen as molecular markers to reconstruct evolutionary relationships among 10 species in this group. The combined approach, based on phylogeny, estimation of node dates, and dispersal-vicariance analyses, indicated that the phylogeographical structuring of A. nemorum has been primarily shaped by the two main periods of the Qinghai-Tibet plateau uplift. The DIVA optimal reconstructions suggest that A. nemorum diversified from the Miocene to the Pleistocene from a center of origin in the Hengduan Mountains. The rapid uplift of Mountain ranges associated with the uplift of the entire Qinghai-Tibet plateau may have promoted rapid divergence in the A. nemorum group. Vicariance and dispersal were both essential in shaping the present distribution patterns of A. nemorum.

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