{"id":862,"date":"2016-02-18T04:24:12","date_gmt":"2016-02-18T04:24:12","guid":{"rendered":"https:\/\/aphidtrek.org\/?page_id=862"},"modified":"2024-12-15T16:39:04","modified_gmt":"2024-12-15T16:39:04","slug":"chaetosiphon","status":"publish","type":"page","link":"https:\/\/aphidtrek.org\/?page_id=862","title":{"rendered":"Chaetosiphon"},"content":{"rendered":"\n

Chaetosiphon<\/em> Mordvilko<\/p>\n\n\n\n

This is a genus of 20-ish mostly Palaearctic species that live on Rosaceae.  I have avidly collected this genus for many years in an attempt to collect all possible species in North America.  As a result, I have a lot of material of just a couple species, and a smattering of odds and ends that are not identifiable.  During winter of 2018 I sat down and studied in more detail the material I’ve accumulated.  I was able to resolve a few oddball slides into species names, and studied in some detail the C. (P.) thomasi\/fragaefolii<\/em> situation.  The latter study makes me think that maybe the reason I’ve never seen something distinct to call C. fragaefolii<\/em> on Fragaria<\/em> is that there is only one species and I file them all under C. thomasi<\/em>.  It’s also frustrating to find that certain features considered important by one author are apparently ignored or considered of zero interest by another.<\/p>\n\n\n\n

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Chaetosiphon <\/em>(Pentatrichopus<\/em>) hottesi <\/em>Stroyan<\/strong><\/p>\n\n\n\n

This species was described fairly recently in the scheme of things (1970) by a British guy, perhaps somewhat embarrassingly for the North American aphid experts at the time.\u00a0 Among the species I have seen it is fairly distinctive and lives on both Rosa<\/em> and Potentilla<\/em>.\u00a0 I have fundatrices from Rosa<\/em> in Idaho, but have never seen sexuales.\u00a0 My samples are from British Columbia, Washington, Oregon, California, Idaho, Nevada, Utah, and Colorado.<\/p>\n\n\n

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\"Chaetosiphon<\/a>
Chaetosiphon (Pentatrichopus) hottesi fundatrix from our garden in southern Idaho.<\/figcaption><\/figure>\n<\/div>\n\n\n
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Chaetosiphon <\/em>(Pentatrichopus<\/em>) fragariae\/thomasi<\/em><\/strong><\/p>\n\n\n\n

Blackman and Eastop<\/a> note that this species might be more complex than it appears, which gets at the reason I have collected it so much over the years.\u00a0 What keys to this species is extremely widespread in western North America on Rosa, Potentilla<\/em>, and Fragaria<\/em>.\u00a0 I get it commonly on cultivated plants as well as uncommon and very specialized plant species in extreme environments such as dry low-lands and rocky mountain-tops.\u00a0 I have walked by it without collecting a sample on many unusual species of Potentilla<\/em> in part because I cannot identify the plant to species, and so having the same aphid from yet another Potentilla<\/em> sp. in an unusual situation is not that interesting.\u00a0 I think this aphid could eventually be found on most of the species of Potentilla<\/em> in western U.S.\u00a0 I have samples from British Columbia, Washington, Oregon, California, Idaho, Utah, Nevada, Wyoming, Colorado, New Mexico, Arizona, Montana, New York, and New Brunswick.<\/p>\n\n\n

\n
\"Chaetosiphon<\/a>
Chaetosiphon (Pentatrichopus) fragariae\/thomasi apterous vivipara from rose in our Idaho garden.<\/figcaption><\/figure>\n<\/div>\n\n
\n
\"Chaetosiphon<\/a>
Chaetosiphon (Pentatrichopus) fragariae\/thomasi ovipara from Fragaria in our Idaho garden.<\/figcaption><\/figure>\n<\/div>\n\n
\n
\"Chaetosiphon<\/a>
Chaetosiphon (Pentatrichopus) fragariae\/thomasi alate male from Fragaria in our Idaho garden.<\/figcaption><\/figure>\n<\/div>\n\n
\n
\"Chaetosiphon<\/a>
Chaetosiphon (Pentatrichopus) fragariae\/thomasi apterous male from Fragaria in our Idaho garden.<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

Chaetosiphon Mordvilko This is a genus of 20-ish mostly Palaearctic species that live on Rosaceae.  I have avidly collected this genus for many years in an attempt to collect all possible species in North America.  As a result, I have a lot of material of just a couple species, and a smattering of odds and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":256,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-862","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/pages\/862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aphidtrek.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=862"}],"version-history":[{"count":5,"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/pages\/862\/revisions"}],"predecessor-version":[{"id":2139,"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/pages\/862\/revisions\/2139"}],"up":[{"embeddable":true,"href":"https:\/\/aphidtrek.org\/index.php?rest_route=\/wp\/v2\/pages\/256"}],"wp:attachment":[{"href":"https:\/\/aphidtrek.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}