Elaphrothrips

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Taxonavigation

Ordo: Thysanoptera
Familia: Phlaeothripidae

Name

Elaphrothrips Buffa – Wikispecies link – Pensoft Profile

Remarks

Species of this genus can be found in all tropical countries, and 141 species are currently listed, with eight recorded from China: Elaphrothrips denticollis, Elaphrothrips jacobsoni, Elaphrothrips greeni, Elaphrothrips spiniceps, Elaphrothrips fulmeki, Elaphrothrips insignis, Elaphrothrips malayensis and Elaphrothrips procer. The last four are here newly recorded from China, but there are also several undescribed species represented in NZMC. The species Elaphrothrips denticollis is widespread in Southern China, and shares most characters with Elaphrothrips malayensis, especially fore tarsi elongate. There is no satisfactory differentiation between these two species, although Palmer and Mound (1978) distinguished Elaphrothrips denticollis from Elaphrothrips malayensis by antennal segments IV–V being uniformly brown or with the basal stem light brown. This is difficult to assess in many specimens that have been slightly bleached. There is a similar problem with Elaphrothrips fulmeki and Elaphrothripsw malayensis that are distinguished only by antennal segment VI with the basal 1/5 brown or pale. Currently, the identification of some Elaphrothrips species is not satisfactory.

Diagnosis

Head much longer than wide, projecting in front of eyes, cheeks usually with numbers of stout setae; eyes equally developed ventrally and dorsally, or a little prolonged ventrally; postocular setae well-developed, interocellar setae well developed, and one pair of median dorsal setae usually developed; stylets short and V-shaped; antennae 8-segmented, segment III with 2 sensoria, IV with 4; pronotal major developed setae usually pointed or blunt, notopleural sutures complete or nearly complete; basantra present; mesopraesternum boat-shaped; metathoracic sternopleural sutures absent; wings, if present, with duplicated cilia; fore tarsal tooth present in male, absent in female, fore femur of large males usually with sickle-shaped seta on external apical margin; pelta broad, two lateral lobes broadly joined with middle one; abdominal tergites III–VI with 2 pairs of sigmoid wing-retaining setae; tube surface smooth, without prominent setae; anal setae usually shorter than tube.

Key to Elaphrothrips species from China

Key to Elaphrothrips species from China — L. Dang , G. Qiao

1		Head with cheek setae dark    2
–		Head with cheek setae yellow or pale    3
2		Head only slightly produced in front of eyes, length about 1/8 as long as width; inner margin of male fore femora with tubercles (Fig. 37); pelta broadly joined to lateral wings (Fig. 29)    Elaphrothrips insignis
–		Head strongly produced in front of eyes, length about 1/2 as long as width; inner margin of fore femora without tubercles in both sexes; pelta narrowly jointed to lateral wings or separated    Elaphrothrips jacobsoni*
3		Head process in front of eyes short, width 3–5 times its length; tibiae uniformly dark brown    4
–		Head process in front of eyes long, width 1–3 times its length; tibiae sometimes pale in the apical half    5
4		Head produced process very short, width about 5 times as long as length (Fig. 22); antennal segment III stout and short, about twice as long as apical brown part; pelta narrowly jointed with lateral wings, joint slender    Elaphrothrips spiniceps
–		Head produced process short, width about 3 times as long as length; antennal segment III more than 4 times as long as apical brown part; pelta narrowly jointed with lateral wings, joint short (Fig. 30)    Elaphrothrips procer
5		Tibiae largely yellow, with sub-basal 1/3 brown (head produced process about as long as width) (Fig. 23)    Elaphrothrips greeni
–		Mid tibiae uniformly brown at least    6
6		Antennal segments IV–V uniformly brown, sometimes a little shallow at base; fore tarsal elongate, about 3 times as long as width (Fig. 38)    Elaphrothrips denticollis
–		Antennal segments IV–V brown with basal pedial pale; fore tarsal various    7
7		Antennal segment III longer than IV; VI brown with basal 1/5 yellow (Fig. 32)    Elaphrothrips fulmeki
–		Antennal segment III as long as IV; VI uniform brown    Elaphrothrips malayensis

Taxon Treatment

• Dang, L; Qiao, G; 2013: Review of the spore-feeding Idolothripinae from China (Thysanoptera, Phlaeothripidae) ZooKeys, 345: 1-28. doi

Images

Figures 20–23. 20–21 Machatothrips, head & pronotum: 20 Machatothrips antennatus 21 Machatothrips artocarpi 22–23 Elaphrothrips, head, pronotum & foreleg: 22 Elaphrothrips spiniceps 23 Elaphrothrips greeni.  Figures 24–31. Idolothripinae Pelta: 24 Bactrothrips sp 25–26 Megathrips lativentris 27 Nesothrips brevicollis 28 Nesothrips peltatus 29 Elaphrothrips insignis 30 Elaphrothrips procer 31 Dinothrips sp.  Figures 32–39. 32–33 Elaphrothrips fulmeki: 32 antennae 33 mid-leg 34–35 Machatothrips foreleg: 34 Machatothrips antennatus 35 Machatothrips artocarpi 36 Dinothrips sumatrensis, male mesothoracic spiracular process 37 Elaphrothrips insignis, male foreleg 38 Elaphrothrips denticollis, male fore tarsi 39 Ophthalmothrips miscanthicola, female fore tarsal tooth.