Lebiina, Bonelli, 1810

Rasool, Iftekhar, Abdel-Dayem, Mahmoud S., Felix, Ron F. F. L. & Aldhafer, Hathal M., 2018, A review of the Subtribe Lebiina Bonelli (Lebiini, Carabidae, Coleoptera) from Southwest of Saudi Arabia, Zootaxa 4379 (1), pp. 87-102 : 88-89

Key to species of Lebiina in Saudi Arabia

1. Mentum with single median tooth ( Fig. 2, 3, 4 ); intervals of elytra not elevated; external epical angles of elytra round; inner side of mesotibiae with preapical notch or crenulated in males; small to medium sized body, ranging from 3.90–9.30 mm ................................................................................................. Lebia …2

- Mentum with short and obtuse bifid tooth ( Fig. 1 ); intervals of elytra elevated with fine punctures, elytra slightly pointed at apical external angles; inner side of mesotibiae not notched or crenulated; large sized body ranging from 12–14 mm ( Fig. 29 )....................................................................... Matabele ( M. arabica Matue, 1986 )

2. Mentum without epilobes ( Fig. 3 ); pronotum base truncated medially ( Figs. 34, 35 ); inner end of mesotibiae with one preapical notch in males ( Fig. 12 ); Head and pronotum testaceous to rufo-testaceous; pronotum shining and smooth, with suppressed microsculptures, shallow wrinkles and very fine punctuation ( Fig. 35 )..................... L. nilotica Chaudoir, 1871

- Mentum with epilobes ( Fig. 4 ); pronotum base with rounded lobe medially ( Fig. 31, 32 ); inner end of mesotibiae crenulated or with one or two preapical notches in males ( Fig. 11, 12, 13 ), (male of L. spec. not known); colour and microsculpture on head and pronotum different.................................................................................. 3

3. Small species, from 3.90 – 6.25 mm ...................................................................... 4

- Large species, from 7.00 – 9.30 mm ...................................................................... 5

4. Tarsomere IV in fore and mid legs strongly bilobed ( Fig. 7 ); labrum rounded anteriorly, head testaceous, finely and sparsely punctate, vertex without furrow ( Fig. 5 ); inner end of mesotibiae with two preapical notches in males ( Fig. 13 )....................................................................................... L. melanacra ( Chaudoir, 1878)

- Tarsomere IV in fore and mid legs not bilobed ( Fig. 8 ); labrum truncate anteriorly, head black with longitudinal furrows on vertex, coarsely and densely punctate ( Fig. 6 ); inner end of mesotibiae with one preapical notch in males ( Fig. 12 )....................................................................................... L. melanura ( Dejean, 1831)

5. Tarsomere IV in fore and mid legs strongly bilobed ( Fig. 9 ); pronotum rounded at anterior angles then straight posteriorly ( Fig. 36 ); sterna with isodiametric mesh pattern; apical margin of last sternum rounded and tetra-setose in females....... L. spec.

- Tarsomere IV in fore and mid legs not bilobed ( Figs. 10 ); pronotum not as rounded as above ( Figs. 30, 33 ); sterna provided with microlines or transverse mesh pattern; apical margin of last sternum rounded and bi-setose in females..............6

6. Labrum shorter than clypeus ( Fig. 14 ), slightly concave, truncate anteriorly; apical edge of elytra serrate ( Fig. 16 ); in lateral view, aedeagus is straight in the middle, both dorsally and ventrally, broadened and thick in the middle, then suddenly gets thinner towards the base, base thinner than middle ( Fig. 38 )............................. L. auberti ( Fairmaire, 1892)

- Labrum as long as clypeus ( Fig. 15 ), slightly convex anteriorly; apical edge of elytra smooth ( Fig. 17 ); aedeagus is curved dorsally and ventrally, gradually growing thinner towards the base, more or less as wide as middle ( Fig. 41 ).... L. raeesae sp. n

Figures

FIGURES 1–6. (1–4) Mentum of Matabele and Lebia: (1) Bifid mentum of M. arabica Mateu, 1986 (2, 3) Mentum without epilobes and single median tooth Lebia s. str, (4) Mentum with epilobes L. spec.(5–6) Head of Lebia sp.: (5) Lebia melanacra (Chaudoir, 1878) (6) L. melanura (Dejean, 1831)

FIGURES 27–29. Habitus of Lebia and Matabele: (27) Syntype. L. natalensis Chaudoir, 1871 (28) L. spec. (29) M. arabica Mateu, 1986.

FIGURES30–37. Head and pronotum of Lebia: (30) L.auberti (Fairmaire,1892), (31) L.melanacra (Chaudoir,1878), (32) L. melanura (Dejean, 1831), (33) L. raeesae sp. n. (34) L. natalensis Chaudoir, 1871, (35) L. nilotica Chaudoir, 1871, (36) L. spec.(37) Matabele arabica Mateu, 1986.

FIGURES 7–13. Tarsomere IV and tibiae of Lebia: (7, 13) Lebia melanacra (Chaudoir, 1878), (8, 12) L. melanura (Dejean, 1831), (10, 11) L.raeesae sp. n. (9) L. spec.

FIGURES 14–17. Labrum, clypeus and apex of elytra: (14) Lebia auberti (Fairmaire, 1892), (15) L. raeesae sp. n. (16) Lebia auberti (Fairmaire, 1892), (17) L.raeesae sp. n.

FIGURES38–42. Aedeagusof Lebia: (38) L.auberti (Fairmaire,1892), (39)L.melanacra (Chaudoir, 1878), (40) L.melanura (Dejean, 1831), (41) L.raeesae sp. n. (42) L. nilotica Chaudoir,1871.