Dryocosmus species
publication ID |
11755334 |
persistent identifier |
https://treatment.plazi.org/id/03DC095C-FFFB-3320-CAD8-E7FB828CFED4 |
treatment provided by |
Felipe |
scientific name |
Dryocosmus species |
status |
|
Key to the Western Palaearctic Dryocosmus species
(a couplet for the separation of Chilaspis species is included)
1 Females ....................................................................................................................................................................... 2
- Males .......................................................................................................................................................................... 10
2 Mesoscutellum entirely smooth, shiny; at most a very narrow strip laterally and posteriorly along emarginate edges sculptured; disk of mesoscutellum always smooth, shiny ........................................................................................... 3
- Mesoscutellum entirely and uniformly coriaceous or rugose ....................................................................................... 5
3 Scutellar foveae more or less distinct, separated by distinct median carina ................................................................ 4
- Scutellar foveae absent, anteriorly only a transverse impression present .................................................. D. tavakolii
4 Pedicel and scape not broadened, only slightly or not broader than flagellomeres, all flagellomeres nearly of the same width; mesoscutellum with wrinkles and rugae along lateral and posterior sides, scutellar foveae not distinctly delimited by median carina and posteriorly ........................................................................................... Chilaspis spp.
- Pedicel and scape strongly broadened, at least 2.2–2.5 times broader than flagellomeres; flagellomeres towards the apex broadened, F8–F12 at least 2.0 times as broad as preceding flagellomeres; mesoscutellum with narrow stripe of wrinkles and rugae along lateral and posterior sides, scutellar foveae distinctly delimited by median carina and posteriorly .................................................................................................................................................... D. caspiensis
5 Gena not or inconspicuously broadened behind eye, not visible in anterior view....................................................... 6
- Gena strongly broadened behind eye, easily visible in anterior view ..................................... D. cerriphilus , asexual
6 Entire body reddish brown to light yellowish brown ................................................................................................... 7
- Entire body black or brownish black ............................................................................................................................ 8
7 Compound eye large, silvery, transfacial distance nearly equal to height of eye, body uniformly light brown to yellowish .............................................................................................................................................................. D. mikoi
- Compound eye small, black, transfacial distance longer than height of eye; head and mesosoma reddish brown, metasoma darker .......................................................................................................................................... D. jungalii
8 All metasomal tergites, except 2nd, with distinct uniform dense micropunctures; mesoscutellar disk reaching mesoscutum in the center, very narrow anterior scutellar depression present only on both sides of this attachment point ................................................................................................................................................................. D. kuriphilus
- All metasomal tergites, including 2nd, without micropunctures; mesoscutellar disk never reaching mesoscutum; broad uninterrupted transverse anterior scutellar depression present across mesoscutellum ...................................... 9
9 Mesoscutellum distinctly longer than broad, rugose to coriaceous, elongate, with nearly parallel sides, with narrow median carina reaching mesoscutum and dividing medially the smooth shiny broad anterior scutellar depression; body usually black or dark brown ................................................................................................................... D. mayri
- Mesoscutellum as long as broad or only slightly longer than broad, dull rugose, without median carina, with rugose anterior scutellar depression; body usually brown to reddish brown ......................................... D. cerriphilus , sexual
10 Body entirely yellow, except dark brown or black head ............................................................................................ 11
- Body black or dark brown ......................................................................................................................................... 12
11 Mesoscutellum smooth, shiny, without sculpture; head black .................................................................... D. jungalii
- Mesoscutellum uniformly coriaceous, head brown ........................................................................................ D. mikoi
12 Diameter of lateral ocellus more than distance between ocellus and margin of eye; mesopleuron uniformly smooth shiny or delicately alutaceous; mesoscutellar disk alutaceous or very delicately coriaceous ........................ D. mayri
- Diameter of lateral ocellus less than distance between ocellus and margin of eye; mesopleuron smooth shiny, with longitudinal very delicate striae (wrinkles) in medioanterior part; mesoscutellar disk uniformly coriaceous to rugose ................................................................................................................................................................ D. cerriphilus
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