Phyllotreta sholaksori, Konstantinov & Moseyko, 2019

Konstantinov, A. S. & Moseyko, A. G., 2019, A new species of Phyllotreta Chevrolat, 1836 (Coleoptera: Chrysomelidae: Galerucinae: Alticini) from Omsk Province of Russia with comments on Phyllotreta species diversity in Northeastern Palearctic, Zootaxa 4679 (3), pp. 499-510 : 509

Key to Phyllotreta sholaksori and allied species

1. Antennomeres one to five and all tibiae more or less light in color, yellowish...................................... 2

- Antennomere 4 and all tibiae dark in color, dark brown or black, antennomere one slightly darkened................... 3

2. Surface of antennal calli and following vertex much higher than surface of orbit. Anterofrontal ridge deeply concave, relatively narrow, as wide as frontal ridge near it............................................................ P. araxicola

- Surface of antennal calli and following vertex only slightly higher than surface of orbit. Anterofrontal ridge shallowly concave, relatively wide, wider than frontal ridge near it..................................................... P. balcanica

3. Distal part of median lobe of aedeagus in lateral view generally straight, very slightly S-shaped ( Fig. 1 D )................................................................................................ P. sholaksori new species

- Distal part of median lobe of aedeagus in lateral view curved ventrally, not slightly S-shaped (e. g. Fig. 4 C )............. 4

4. Bent part of apex of median lobe of aedeagus in lateral view long ( Fig. 4 C )....................................... 5

- Bent part of apex of median lobe of aedeagus in lateral view short ( Fig. 5 C )...................................... 6

5. Vertex with punctures relatively sparsely placed just above antennal calli ( Fig. 8 B ). Median lobe of aedeagus slender, more or less parallel sided in ventral view, nearly straight in lateral view, apex without well developed denticle ( Fig. 8 C ).................................................................................................... P. diademata

- Vertex with punctures relatively densely placed just above antennal calli. ( Fig. 4 B ). Median lobe of aedeagus robust, with slightly curved sides in ventral view, strongly bent in lateral view, apex with well developed denticle ( Fig. 4 B ).................................................................................................... P. astrachanica

6. Midfrontal sulcus well visible. Surface of frontal ridge at same level as antennal calli ( Fig. 5 B ). Apical part of median lobe of aedeagus narrowing gradually, apex without well developed denticle ( Fig. 5 C )................................. P. atra

- Midfrontal sulcus invisible. Surface of frontal ridge slightly above level as antennal calli ( Fig.7 B ). Apical part of median lobe of aedeagus narrowing abruptly, apex with well developed denticle ( Fig. 7 C )............................. P. cruciferae

Figures

FIGURE 1. Phyllotreta sholaksori new species. A—habitus, dorsal view; B—habitus, lateral view; C—head, frontal view; D—meadian lobe of aedeagus, ventral, lateral and dorsal views.

FIGURE 4. Phyllotreta astrachanica Lopatin. A—habitus, dorsal view; B—head, frontal view; C—meadian lobe of aedeagus, ventral, lateral and dorsal views.

FIGURE 5. Phyllotreta atra Fabricius.A—habitus, dorsal view; B—head, frontal view; C—meadian lobe of aedeagus, ventral, lateral and dorsal views.

FIGURE 7. Phyllotreta cruciferae Goeze. A—habitus, dorsal view; B—head, frontal view; C—meadian lobe of aedeagus, ventral, lateral and dorsal views.

FIGURE 8. Phyllotreta diademata Fourdas. A—habitus, dorsal view; B—head, frontal view; C—meadian lobe of aedeagus, ventral, lateral and dorsal views.