Longitarsus violentoides Konstantinov

Konstantinov, Alexander S. & Lopatin, Igor K., 2000, Review Of The Longitarsus Asperifoliarum Group Of Species (Coleoptera: Chrysomelidae: Alticinae), The Coleopterists Bulletin 54 (2), pp. 200-220 : 215-216

Longitarsus violentoides Konstantinov , new species

Figs. 15 , 21 , 25, 29, 51, 52

Description. Body slightly convex. Length 1.58 mm, width 0.78 mm. Color black with strong copper reflection. Antenna and leg brown­ferrugineous, first antennomere and antennomeres 6–11 slightly darker. Metafemur black with bronze reflection. Pro­ and mesofemora dark brown. Middle of tibiae brown. Vertex strongly shagreened, with single, well developed supraorbital puncture above orbital sulcus. Antennal callus poorly developed, not higher than vertex, not delineated from vertex by grooves. Surface of antennal callus moderately shiny, lacking sculpture. Midfrontal and suprafrontal sulci absent. Frontal ridge high and convex in lateral view, moderately narrow, but wider than in L. violentus . Anterofrontal ridge attached to end of frontal ridge, in middle as high and as thick as frontal ridge. Second antennomere slightly longer than third, as long as fourth. Pronotum length/width ratio 1.48, slightly wider basally. Lateral side convex, with maximum width in front of middle. Anterolateral callosity well developed, slightly lower anteriorly. Lateral margin narrowly explanated, explanation wider apically. Posterolateral callosity poorly developed, low, wide. Punctures poorly defined, shallow, moderately small, 1.5 to 2.0 times smaller than interspaces. Interspaces covered with wrinkles. Scutellum widely rounded on top. Elytron with poorly developed humeral callus and maximum width behind middle. Apex broadly rounded. Punctures much larger than those on pronotum, their diameter 1.5–2 times larger than distance between punctures. Interspaces minutely shagreened. Male metatibia straight in dorsal view. First metatarsomere of male 1.10 times longer than rest of segments together. Second metatarsomere of male as long as fourth and 2 times as long as third. Metatibial spur smaller than third metatarsomere. Tarsal claw thin, lacking denticle. Median lobe of aedeagus parallel sided, with deep, wide ventral groove. Bottom of groove membranous, with several well developed longitudinal wrinkles. Apex widely rounded with moderately wide denticle ( Figs. 51–52 ). Preapical abdominal tergite of female with few moderately long setae. Distal half of preapical abdominal tergite sparsely covered with short setae; basal half without pores ( Fig. 15 ). Apical abdominal tergite covered with long setae. Microtrichia situated in middle ( Fig. 15 ). Receptacle of spermatheca ( Fig. 21 ) only slightly longer than pump. Inner side of receptacle convex, outer side nearly straight. Vertical part of pump short, well delineated from receptacle and from horizontal part of pump. Spermathecal duct basally directed opposite to receptacle making almost no loop away from receptacle, apically forming 2 extremely similar coils. Tignum slender, straight, pointed posteriorly ( Fig. 25 ). Vaginal palpus slender, posteriorly slightly curved medially, broadly rounded at apex ( Fig. 29 ). Apical sclerotization obtuse.

Variability. Some specimens have the vertex less shagreened than others.

Comments. Longitarsus violentoides is most similar to L. violentus . It can be separated by smaller body size; pronotal punctures 1.5–2.0 times smaller than interspaces; poorly developed humeral callus; elytral punctures much larger than pronotal punctures, their diameter 1.5–2.0 times larger than distance between them; male metatibia straight in dorsal view; median lobe of aedeagus more robust with widely rounded apex; spermathecal duct pointed in the direction opposite to receptacle, making 2 nearly identical coils; and lateral parts of the apical abdominal tergite of female lacks of microtrichia.

Type Material. Holotype?: Armenia, Tsahkadzor, alpine meadow, 2500– 3200 m, 22.V.1988, leg. A. Konstantinov ( USNM) . Paratypes: The same data as holotype (? AKPC), (/ ZMAS), (/ USNM) , (/ IZEA) .

Figures

Figs. 13–16. Last abdominal tergites of female. 13) Longitarsus asperifoliarum Weise; 14) L. marguzoricus Konstantinov; 15) L. violentoides Konstantinov; 16) L. violentus Weise.

Figs. 17–22. Spermathecae. 17, 18) Longitarsus asperifoliarum Weise; 19, 20) L. marguzoricus Konstantinov; 21) L. violentoides Konstantinov; 22) L. violentus Weise.

Figs. 43–52. Median lobe of aedeagus. 43–48) Longitarsus marguzoricus Konstantinov; 49, 50) L. tishechkini Konstantinov; 51, 52) L. violentoides Konstantinov.

Figs. 23–26. Tignum (8th abdominal sternite of female). 23) Longitarsus asperifoliarum Weise; 24) L. marguzoricus Konstantinov; 25) L. violentoides Konstantinov; 26) L. violentus Weise.

Figs. 27–30. Vaginal palpi. 27) Longitarsus asperifoliarum Weise; 28) L. marguzoricus Konstantinov; 29) L. violentoides Konstantinov; 30) L. violentus Weise.