Kenyacus, Alluaud, 1917

Kataev, Boris M., 2019, A review of the Afrotropical genus Kenyacus (Coleoptera: Carabidae: Harpalini) from the Rwenzori Mountains, with description of seven new species, Zootaxa 4679 (3), pp. 463-498 : 466-467

publication ID

https://doi.org/10.11646/zootaxa.4679.3.3

publication LSID

lsid:zoobank.org:pub:5723773A-49BD-4CDB-99CD-B3A0AFC24F66

persistent identifier

https://treatment.plazi.org/id/03FD87C3-FFB5-D503-DE8E-EA70FA03FB1F

treatment provided by

Plazi

scientific name

Kenyacus
status

 

Key to species of Kenyacus from the Rwenzori Mountains

1 Larger: body length more than 5.0 mm. Pronotum with basal angles large, almost right, at most only slightly blunted at tip, and markedly projecting posteriorly above elytral base ( Figs 1 View FIGURES 1, 2 , 3 View FIGURES 3, 4 ). Elytral microsculpture almost granulate, consisting of large isodiametric meshes ( Fig. 18 View FIGURES 14–21 ). Female genitalia—Figs 12, 13. Median lobe of aedeagus—Figs 5–8................................................................................................. K. ruwenzorii ( Alluaud, 1917)

- Smaller: body length less than 5.0 mm. Pronotum with basal angles obtuse or almost right, often blunted or rounded at tip, not or only slightly projecting posteriorly above elytral base. Elytral microsculpture transverse ( Figs 19–21 View FIGURES 14–21 ). Genitalia not as above............................................................................................... 2

2 Elytral striae extremely thin, very superficial, in basal half partly indistinct. Pronotal sides in basal half rounded or almost straight, not sinuate ( Figs 83, 85 View FIGURES 83–85 ). Female genitalia with asymmetrical laterotergite and very narrow apical stylomere ( Figs 86, 87 View FIGURES 86–90 ). Median lobe of aedeagus ( Figs 88, 90 View FIGURES 86–90 ) with apex very slightly curved in dorsal direction. Body length 3.1–3.8 mm. Species from the northern part of the Rwenzori Mountains................................ K. ruwenzoricus Basilewsky, 1955

- Elytral striae more distinct, often impressed apically or along entire length. Pronotal sides in basal half straight or sinuate, not rounded. Female genitalia with asymmetrical or symmetrical laterotergite and with narrow or widened basally apical stylomere. Median lobe of aedeagus with apex not curved dorsally. Body length 3.0– 4.7 mm. Species from the south-eastern part of the Rwenzori Mountains.................................................................................. 3

3 Larger: body length 3.6–4.7 mm. Pronotal basal margin more or less deeply emarginate, rarely almost straight, but in the latter case body length more than 3.6 mm ....................................................................... 4

- Smaller: body length 3.0– 3.6 mm. Pronotal basal margin more or less straight, not deeply emarginate.................. 7

4 Body ( Fig. 4 View FIGURES 3, 4 ) stouter, pronotum wider (PWmax/PL 1.52–1.56), with wider base (PWmax/PWmin 1.19–1.23) and with basal angles less obtuse, occasionally almost right, with sharper, at most only slightly blunted tip. Apex of left mandible subtruncate or distinctly blunt, not acute. Female genitalia relatively large, with asymmetrical elongate laterotergite ( Figs 25, 26 View FIGURES 22–26 ). Median lobe of aedeagus ( Figs 23, 24 View FIGURES 22–26 ) slenderer, with relatively small basal bulb............................ K. gusarovi sp. n.

- Body slenderer, pronotum narrower (PWmax/PL 1.23–1.45), with narrower base (PWmax/PWmin 1.25–1.43) and with basal angles usually obtuser, narrowly rounded at tip. Apex of left mandible acute. Female genitalia relatively small, with wider and almost symmetrical laterotergite. Median lobe of aedeagus stouter, with relatively larger basal bulb.................... 5

5 Larger: body length 4.1–4.7 mm. Elytra more elongate ( Figs 28, 29 View FIGURES 28, 29 ), in relation to pronotum longer (EL/PL 2.59–2.87). Internal sac of aedeagus ( Figs 32, 34, 35, 37 View FIGURES 32–49 ) with apical folding spiny patch long, reaching basal bulb and usually penetrated in it.......................................................................................... K. parvus sp. n.

- Smaller: body length 3.6–4.0 mm. Elytra less elongate ( Figs 30, 31 View FIGURES 30, 31 ), in relation to pronotum shorter (EL/PL 2.42–2.57). Internal sac of aedeagus ( Figs 40, 42, 47, 49 View FIGURES 32–49 ) with shorter apical folding spiny patch, not reaching basal bulb................ 6

6 Pronotum ( Fig. 30 View FIGURES 30, 31 ) with basal angles almost right or acute, blunted or narrowly rounded at tip, more or less markedly projecting posteriorly, and with apical and basal margins more deeply emarginate. Supraorbital setigerous pore located at level of posterior margin of eye. Male mesotarsus slightly dilated and with adhesive scales on tarsomeres 2–4 (scales on tarsomere 2 highly reduced, very small). Median lobe of aedeagus ( Figs 40–42 View FIGURES 32–49 ) in lateral view less strongly curved and in dorsal view with wider apical portion............................................................................. K. berndi sp. n.

- Pronotum ( Fig. 31 View FIGURES 30, 31 ) with more widely rounded basal angles and with more shallowly emarginate, almost straight, apical and basal margins. Supraorbital setigerous pore located just behind level of posterior margin of eye. Male mesotarsus almost not dilated, with adhesive scales present only on tarsomere 4. Median lobe of aedeagus ( Figs 47–49 View FIGURES 32–49 ) in lateral view more strongly curved and in dorsal view with narrower apical portion......................................... K. trechoides sp. n.

7 Elytral striae somewhat evenly impressed along entire length. Elytral intervals throughout slightly convex. Pronotal basal angles obtuse, rounded at tip ( Fig. 54 View FIGURES 52–54 ). Apical stylomere in lateral view ( Figs 77, 79, 80 View FIGURES 55–81 ) more or less parallel-sided. Median lobe of aedeagus ( Figs 74–76 View FIGURES 55–81 ) relatively larger, rather strongly and evenly arcuate in lateral view.......... K. pusillus sp. n.

- Elytral striae impressed and intervals convex at most only apically. Pronotal basal angles obtuse or almost right. Apical stylomere parallel-sided or narrowed apically. Median lobe of aedeagus relatively smaller................................ 8

8 Pronotum ( Fig. 52 View FIGURES 52–54 ) with narrower base, its sides more or less straightly converging in basal half; basal angles obtuse, blunted or very narrowly rounded at tip. Elytral sutural angle clearly blunted or narrowly rounded at tip. Apical stylomere in ventral view ( Figs 63, 65 View FIGURES 55–81 ) with wider base, in lateral view ( Figs 62, 64 View FIGURES 55–81 ) evenly narrowed apically. Median lobe of aedeagus ( Figs 55–61 View FIGURES 55–81 ) slenderer, in lateral view less arcuate, more strongly bent at or before middle; terminal lamella in dorso-caudal view ( Figs 56, 59 View FIGURES 55–81 ) more narrowly rounded.............................................................. K. angustatus sp. n.

- Pronotum ( Fig. 53 View FIGURES 52–54 ) with wider base, its sides more or less markedly sinuate basally and basal angles obtuse or almost right, rather sharp, at most only slightly blunted just at tip. Elytral sutural angle sharper, at most only very slightly blunted at tip. Apical stylomere in ventral view ( Figs 70, 72 View FIGURES 55–81 ) with narrower base, in lateral view ( Figs 69, 71 View FIGURES 55–81 ) almost parallel-sided, with rounded apex. Median lobe of aedeagus ( Figs 66, 68, 73 View FIGURES 55–81 ) stouter, in lateral view more markedly arcuate and more strongly bent at or behind middle; terminal lamella in dorso-caudal view ( Fig. 67 View FIGURES 55–81 ) more widely rounded.................... K. similis sp. n.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Carabidae