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Chirothrips manicatus
Fig. 1


Fig. 2


Fig. 3


Fig. 4


Fig. 5


Fig. 6

Sternite 7

Fig. 7

Tergites 6-7

Fig. 8


Fig. 9


Fig. 10


Fig. 11


Fig. 12



Fig. 1: Antenna (inset: III. and IV. antennal segment)
Fig. 2: Head dorsal with ocellar triangle
Fig. 3: Pronotum
Fig. 4: Meso- and metanotum
Fig. 5: Fore- and hindwing
Fig. 6: Sternite VII
Fig. 7: Tergites VI and VII
Fig. 8: Tergites VIII-X

ITS-RFLP gel patterns (1&8 ladder, 2 PCR-product, 3 RSAI, 4 HaeIII, 5 MspI, 6 HinfI, 7 AluI)
Fig. 9: Primer pair CS249/CS250
Fig. 10: Primer pair O1/18J
Fig. 11: Primer pair P1/28Z
Fig. 12: Primer pair TODA1/TODA2

Taxonomic Information

Chirothrips manicatus Haliday, 1836

Chirothrips longisetis Priesner, 1949 
Chirothrips bagnalli Hood, 1938 
Chirothrips testacea Hukkinen, 1935 
Chirothrips ambulans Bagnall, 1932 
Chirothrips productus Bagnall, 1932 
Chirothrips laingi Bagnall, 1932 
Chirothrips takahashii Moulton, 1928 
Chirothrips ammophilae Bagnall, 1927 
Chirothrips albicornis Priesner, 1926 
Chirothrips microptera Maltbaek, 1921 
Chirothrips brachyptera Maltbaek, 1921 
Chirothrips aptera Schille, 1911 
Chirothrips similis Bagnall, 1909 
Chirothrips fusca Coesfeld, 1898 
Chirothrips adusta Uzel, 1895 
Chirothrips antennatus Osborn, 1883 
Thrips longipennis Burmeister, 1838
Thrips (Chirothrips) manicatus Haliday, 1836 

Common name:
Timothy thrips

Present taxonomic position:
Family: Thripidae Stephens, 1829
Subfamily: Thripinae (Stephens) Karny, 1921
Genus: Chirothrips Haliday, 1836


Species Recognition

General information about the genus Chirothrips:
The species in this genus breed in grass flowers sometimes their pupae are transported around the world within commercial grass seed. This genus has consistent characters that include small heads, antennae with 8 segments, segment II expanded laterally and trapezoidal pronotums.

Typical character states of Chirothrips manicatus:

Body color
Mainly brown

Number of antennal segments: 8
Segments II and III shape: Segment II with external margin strongly prolonged but not III
Segments III & IV sensoria: emergent and simple
Base of sensorium on antennal segment VI: no more than 2 times as wide as base of nearest seta
Terminal antennal segments: rarely elongate

Distance between bases of ocellar setae III: greater than width of first ocellus
Head shape between compound eyes: distinctly prolonged
Ocellar setae III on head: arising on anterior margin of, or in front of, ocellar triangle
Surface of head, pronotum and fore legs: without strong reticulate sculpture
Ocellar setae I in front of anterior ocellus:  present

Number of pairs of elongate pronotal setae: 0-3
Number of pairs of elongate posteroangular pronotal setae: 2
Pronotum shape: trapezoid
Number of pairs of pronotum posteromarginal minor setae: 5-6
Number of pairs of pronotum anteromarginal minor setae: 2-3

Mesothoracic endofurca: without median spinula

Metanotal median area sculptured lines: with transverse reticulation
Metanotal median setae length: shorter than lateral metanotal setae
Metanotal median setae position: arising behind anterior margin
Metanotum: without campaniform sensilla
Metanotum major sclerite: with two major sclerites, metascutum and metascutellum, wingless with only one major sclerite
Metanotum median area: with no equiangular reticulation
Metanotum sculpture: without dominant sculptured triangle medially
Metathoracic endofurca: transverse, sometimes with simple median spinula

Wings: absent, or not longer than thorax width or present and more than half as long as abdomen
First vein of forewing: distinct from costal vein
Forewing anterior margin: with setae and cilia but cilia longer than setae
Forewing color: uniformly light brown
Forewing costal fringe of cilia: arising at anterior margin of wing
Forewing costal setae at middle of wing: shorter than median width of wing
Forewing first vein setal row: incomplete, with setae not closely and uniformly spaced
Forewing posterior margin cilia: undulated near apex
Forewing second vein setal row: incomplete, with setae not closely and uniformly spaced
Forewing surface: not reticulate
Forewings: with veins, setae and microtrichia

Fore tibial apex: not extending around fore tarsus
Mid and hind tarsi: with two segments

Abdominal pleurotergites:  not covered in microtrichia
Abdominal segment X: never tubular, longitudinally incomplete ventrally in both sexes
Abdominal sternite III of female:  without glandular areas
Abdominal sternite VII median marginal setae: arising in front of margin
Abdominal sternites IV , V and VI: with marginal setae but no discal setae
Number of lateral marginal setae on abdominal tergite II: 3
Abdominal tergites: without curved wing-retaining setae
Abdominal tergites IV & V median setal pair: much shorter than distance between their bases
Abdominal tergites V-VII: without paired ctenidia, sometimes with irregular microtrichia
Setae on abdominal tergite X: slender
Surface of lateral thirds of abdominal tergites: without regular rows of fine microtrichia
Ctenidia on tergite VIII:  not present, but groups of microtrichia
Tergite VIII posteromarginal comb of microtrichia: absent
Lobes of tergal craspeda: with joined lobes



Life history:
As with other thrips species the life cycle from egg to adult is dependent on temperature. The full cycle can take less than one week to over a month and adults may live for more than one month producing several generations in one year depending on seasonal weather (Lewis, 1973). 

Host plants:
Grasses, cereals (Poaceae)

Vector capacity:
None identified

Current known distribution:
Worldwide temperate regions, Africa, Asia, Australia, New Zealand, Central and South America, Europe , North America

Additional notes:
The species in this genus breed in grass flowers sometimes their pupae are transported around the world within commercial grass seed.


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