Morphometric discrimination of two sympatric sibling species in the Palaearctic region, Culicoides obsoletus Meigen and C. scoticus Downes & Kettle (Diptera: Ceratopogonidae), vectors of bluetongue and Schmallenberg viruses

Table 4 A summary of eight ratios derived from morphological measurements of C. obsoletus and C. scoticus that exhibited significant differences between the species from sites in the UK, France and Spain

Ratio	UK		France				Spain
	Bala	Devon	Landes	Calvados			Avià	Caldes
	Bala	Devon	Landes	Start	Middle	End	Avià	Caldes
Wing ratio		×
Costa ratio	×	×			×		×	×
Palp ratio	×	×	×	×	×	×	×	×
Segment ratio	×	×	×	×	×	×	×	×
Flagella ratio	×	×	×	×	×	×	×	×
Larger spermatheca ratio	×	×	×	×	×		×	×
Smaller spermatheca ratio	×	×	×	×	×		×	×
Chitinous plate ratio	×	×	×	×	×	×	×	×

ISSN: 1756-3305