Pterostichus (Orientostichus) makarovi Fedorenko, 2023

Fedorenko, D. N., 2023, A review of Pterostichus subgenus Orientostichus (Coleoptera: Carabidae: Pterostichini) from Indochina, with description of new species, Russian Entomological Journal 32 (2), pp. 155-170 : 163-165

2. Pterostichus (Orientostichus) makarovi Fedorenko , sp.n.

Figs 1 , 18 , 28 , 44–45 , 50 .

MATERIAL. Holotype ♂ ( ZMMU) labelled: ‘N-Vietnam, 40 km W of/ Cao Bang, Phia Oac Mt. / 22°36´25´´N 105°52´08´´E, h~ 1650-1700 m,/ deciduous forest, 3-11.X./ leg. D. Fedorenko 2018’. Paratype ♀ ( SIEE), same label, except for ‘…/ 22°36´50´´N 105°52´0´´E, h~ 1800 m, deciduous/ ba[m]boo forest, 3-11.X.2018 / leg. D. Fedorenko’ .

DIAGNOSIS.Distinctive from the previous species chiefly in having the elytra sexually dimorphic, rather shiny in male vs. dull in female due to microsculpture being superficial and transversely meshed or granulate, respectively. Furthermore, reflexed lateral margin of elytra in apical half has a distinct blunt carina. For other differences see the key and ‘Description’ below.

DESCRIPTION. Very similar to P. matalini sp.n., except for the following differences. BL 21.2–24.2 mm. Body ( Fig. 1 ) black, shiny in male, dull in female. Microsculpture distinct, consisting of moderately transverse meshes on pronotum and of moderately to very transverse meshes on elytra in male and of very coarse, isodiametric to barely longitudinal, meshes on elytra in female; reflexed lateral margins of elytra with microsculpture isodiametric, coarse or very coarse.

Frontal sulci shallow and shorter.AR (1.58: 0.70: 0.99, n = 2).

Pronotum broadest just in front of middle, PLw/ PL 0.45 (♂) or 0.47 (♀), sides straight in front of sharp basal angles. Basolateral sulci deeper, finely and densely punctate at bottom and on each side, with sparser punctures between inner and outer sulcus and almost reaching median line; inner sulci slightly shorter, running on basal third and almost reaching basal margin; outer sulci slightly shorter than inner ones .

Elytral basal ridge transverse and straight. Striae impunctate and very deep, more so toward apex. Intervals very convex. Parascutellar striole missing. Discal seta d3 adjoining stria 2, D3/EL 0.25–0.35 (0.28, n = 2×2). Stria 7 bisetose at apex, with intermediate, right unilateral, seta in the male. USS: 27–31.

Ventral side similar, except for sides densely and more coarsely punctate. Male abdominal sternite VII similar ( Fig. 18 ).

Legs: ti 1 with single postero-apical spinule.

Aedeagus ( Figs 28 , 44–45 , 50 ) with its everted and inflated internal sac similar except chiefly that Λ- shaped sclerite is distinctive (other differences are not described as they may have come from not maximally inflated internal sac).

DISTRIBUTION. The species is known from the type locality only.

NAME. Patronymic, given after my good friend, specialist in Carabidae, Dr. Kirill Makarov (The Moscow Pedagogical State University).

HABITATS AND HABITS. Both specimens were taken in cloudy forests.

Figures

Figs 1–3. Dorsal habitus: 1 — Pterostichus makarovi sp.n., paratype ♀; 2–3 — P. matalini sp.n., paratypes from Phan Xi Pang Mt or Bat Xat NP. Рис. 1–3. Габитус дорЗально: 1 — Pterostichus makarovi sp.n., паратип ♀; 2–3 — P. matalini sp.n., паратипы с г. Фансипан и иЗ Национального парка Батсат.

Figs 10–18. Pterostichus: 10, 15 — P. matalini sp.n.; 11, 14 — P. prattii, from Moupin, China; 12 — Pterostichus sp. from China; 13 — P. curtatus; 16 — P. pseudolesticoides sp.n.; 17 — P. ferreroi; 18 — P. makarovi sp.n.; 10–12 — apices of elytra and abdomen, dorsal aspect; 13–18 — abdominal sternite VII in male, left lateral view. Not to scale. Рис. 10–18. Pterostichus: 10, 15 — P. matalini sp.n.; 11, 14 — P. prattii, иЗ Moupin, Китай; 12 — Pterostichus sp. иЗ КитаЯ; 13 — P. curtatus; 16 — P. pseudolesticoides sp.n.; 17 — P. ferreroi; 18 — P. makarovi sp.n.; 10–12 — вершины надкрылий и брюшка, дорЗально; 13–18 — стернит VII брюшка саца, вид слева. БеЗ масштаба.

Figs 19–30. Aedeagus: 19–20, 25 — Pterostichus prattii, from Moupin, China; 21–22, 27 — P. matalini sp.n.; 23–24, 26 — P. ferreroi; 28 — P. makarovi sp.n.; 29 — P. pseudolesticoides sp.n.; 30 — P. lesticoides; 19–24 — median lobe; 25–30 — right paramere; 19, 21, 23, 25–30 — left lateral aspect; 20, 22, 24 — right lateral aspect. Scale bars 1 mm. Рис. 19–30. Эдеагус: 19–20, 25 — Pterostichus prattii, иЗ Moupin, Китай; 21–22, 27 — P. matalini sp.n.; 23–24, 26 — P. ferreroi; 28 — P. makarovi sp.n.; 29 — P. pseudolesticoides sp.n.; 30 — P. lesticoides; 19–24 — среднЯЯ долЯ; 25–30 — праваЯ парамера; 19, 21, 23, 25–30 — слева; 20, 22, 24 — справа. Масштаб 1 мм.

Figs 40–45. Aedeagus with everted and inflated internal sac: 40–41 — Pterostichus ferreroi, paratype; 42–43 — P. matalini sp.n.; 44– 45 — P. makarovi sp.n.; 40, 42, 43 — left lateral aspect; 41, 43, 45 — right lateral aspect. Scale bars 1 mm. Рис. 40–45. Эдеагус с вывернутым и раЗдутым внутренним мешком: 40–41 — Pterostichus ferreroi, paratype; 42–43 — P. matalini sp.n.; 44–45 — P. makarovi sp.n.; 40, 42, 43 — слева; 41, 43, 45 — справа. Масштаб 1 мм.

Figs 46–51. Aedeagus with everted and inflated internal sac: 46–47, 51 — Pterostichus pseudolesticoides sp.n.; 48 — P. ferreroi, paratype; 49 — P. matalini sp.n.; 50 — P. makarovi sp.n.; 46 — left lateral aspect; 47 — right lateral aspect; 48–51 — ventrobasal aspect. Scale bars 1 mm. Рис. 46–51. Эдеагус с вывернутым и раЗдутым внутренним мешком: 46–47, 51 — Pterostichus pseudolesticoides sp.n.; 48 — P. ferreroi, paratype; 49 — P. matalini sp.n.; 50 — P. makarovi sp.n.; 46 — слева; 47 — справа; 48–51 — вентробаЗально. Масштаб 1 мм.