1      Anterior disk of pronotum with transverse row of four prominent roundish tubercles

lamottei Villiers

-       Anterior disk of pronotum with only slight elevations

2

2(1)  Anterolateral pronotal tooth long and sharp, usually more or less recurved apically, black

cornuta Horváth

-       Anterolateral pronotal tooth shorter, more or less delicate, at most slightly recurved apically, pale

3

3(2)   Hypophysis of paramere long and narrow, digitate

-        Form of paramere differing from above

4(3)   Posteroventral margin of pygophore with median lobe triangular

monticola Villiers

-        Posteroventral margin of pygophore with median lobe broad

yaoundea Linnavuori

5(3)   Apical margin of paramere strongly insinuated

mixta Linnavuori

-        Apical margin of paramere not strongly insinuated

6

6(5)   Apex of paramere in form of small hook

acutangula Linnavuori

-        Hypophysis of paramere blade like

7

7(6)   Head 1.12 times as broad as long; eyes small, ocular index 3.8; third antennal segment 2.36 times as long as second; puncturing of pronotum and scutellum coarse and rather sparse

longicornis Linnavuori

-       Head much shorter and broader; eyes larger; third antennal segment shorter; puncturing of pronotum and scutellum fine and dense

8

8(7)  Length 8-9mm; body depressed; color brownish; head 1.22 times as broad as long; ocular index 3.56; third antennal segment 1.7 times as long as second

depressa Linnavuori

-       Length greater than 8.5mm; body convex; head black, anterior part of pronotum largely dark; head 1.30-1.43 times as broad as long; eyes strongly prominent, ocular index 2.54-2.87; third antennal segment about 1.8 times as long as second

fibulata (Germar)

1      Apex of anterolateral pronotal spine curving forward, extending cephalad of anterior pronotal angle

2

-       Apex of anterolateral pronotal spine not curving forward beyond apex of anterior pronotal angle

5

2(1)  Anterolateral pronotal margins strongly convex

3

-       Anterolateral pronotal margins concave or slightly sinuate

3(2)  Tylus slightly shorter than juga; rostrum long, extending onto abdomen; moderate, black species, 8.0-8.5mm

-       Juga longer than tylus; rostrum shorter, reaching to hind coxae; small brown to dark brown species, 6.5-7.0mm

4(3)  Anterolateral spine long, humeral spine at least one-tenth of the total pronotal width; femur always dark approaching black; moderate, yellowish-brown species, 7.0-7.5mm

-       Anterolateral spine short, humeral spine less than one-tenth of total pronotal width; femur always pale; brownish-yellow species, 8.5mm

5(1)  Apex of anterolateral pronotal spine projecting forward or laterad

-       Apex of anterolateral pronotal spine projecting posterad; moderate, reddish-brown species, 7.0-8.5mm

6(5)  Anterolateral margins of pronotum serrate; apex of antenniferous tubercle distinctly bifid; large, yellowish-brown species, 10.5-11.0mm

-       Anterolateral margins of pronotum entire, not serrate; apex of antenniferous tubercle at most slightly bifid

7(6)  Apex of head notched, tylus slightly shorter than juga; pale species

-       Apex of head not notched, tylus and juga subequal in length, or tylus slightly longer than juga; dark species

8(7)  Anterolateral margins of pronotum concave; disk of pronotum with strong transverse impression near middle; small, reddish-brown species, 6.0-6.5mm

-       Anterolateral margins of pronotum slightly sinuate; disk of pronotum with slightly transverse impression; moderate, brownish-yellow species, 7.0-7.2mm

9(7)  Rostrum extending beyond hind coxae onto abdomen; scutellum nearly one-third times longer than width at narrowest point; apex of antenniferous tubercle blunt; dark species, 8.5mm

-       Rostrum extending only to middle of hind coxae; scutellum about twice as long as width at narrowest point; apex of antenniferous tubercle slightly bifid; large, dark species, 9.5-11.0mm