Pterostichus (Morphohaptoderus) glabellus Fedorenko

Fedorenko, D. N., 2023, New taxa of Pterostichus (Coleoptera: Carabidae) from Vietnam, Russian Entomological Journal 32 (1), pp. 16-39 : 17-20

Pterostichus (Morphohaptoderus) glabellus Fedorenko , sp.n.

Figs 1 , 12–13 , 22, 30 , 43–45, 54–55, 64–65.

MATERIAL. Holotype ♂ ( ZMMU) and 12 paratypes ( SIEE): 3♂♂, ♀, labelled: ‘N[orthern] Vietnam, Lao Cai Prov[ince]./ Hoang Lien Son Mt.ridge,/ env. Fansipan [= Phan Xi Pang] Mt, Tram Ton/ h = 1950-2100 [m],/ 15-30./ leg. VII.2007 ’; 4♂♂, 4♀♀, with same label except ‘…/ env. Phan Xi Pang Mt,/ Tram Ton / pitfall traps / leg. A.Anichkin V–VI.2006 ’.

Genitalia examined in three males and one female.

DIAGNOSIS. A medium-sized species of the subgenus, recognizable by the elytra with no parascutellar or discal setae and fe 3 conspicuously sexually dimorphic.

DESCRIPTION. BL 8.6–9.5 mm. Body ( Fig. 1 ) shiny black and slightly iridescent, antennae, palps, femora at extreme apices and tarsi red; femora dark brown, tibiae reddish brown or slightly reddish, extreme lateral margin of pronotum in basal two thirds reddish, elytra slightly reddish along sides in apical half. Dorsal microsculpture superficial and isodiametric on head, slightly transverse on neck, very superficial, consisting of moderately to fairly transverse meshes, on pronotum, and of very dense transverse lines on elytra.

Head very small, without neck constriction. Genae about a third as long as convex eyes, meeting neck at obtuse angle. Frons smooth. Clypeus barely sinuate at apical margin, frontoclypeal suture nearly straight. Frontal sulci short, impunctate, moderately deep, diverging toward and not reaching the level of anterior supra-ocular setae, slightly extended onto clypeus. Labrum rectangular, truncate apically, with an oblong and shallow fovea at middle. Mandibles very obliquely and very densely striated on dorsal side, scrobe with longitudinal sulcus. Terminal palpomeres fusiform, penultimate labial palpomere bisetose. Submentum quadrisetose.

Pronotum quadrate and rather convex, with sides evenly rounded, broadest just in front of middle. Base almost half wider than apex, subconvex, with a vestigial basal bead outside inner basolateral sulci; angles obtuse, with a nearly indistinct blunt tooth. Inner basolateral sulci deep, impunctate, running almost parallel to each other on basal third while not quite reaching base; outer sulci short and indistinct. Apex slightly sinuate, apical angles nearly right, blunt, slightly projecting. Median line fine yet deep, obliterate basally and apically. Lateral bead fine, very so in front of anterolateral seta, slightly wider behind. Apical bead obliterate in about middle fourth.

Elytra elliptic, very convex behind middle in lateral view, broadest at about or slightly behind middle, slightly rounded on sides, more so toward base and toward apices, these rounded combined; preapical sinuation slight, preapical plica distinct in lateral view. Base rather narrow, basal ridge nearly straight. Humeri rounded, humeral angle obtuse yet sharp and minutely toothed. Striae deep, impunctate or indistinctly crenulate, stria 7 opposite humeral angle; parascutellar striole entire, with base of stria 1 sometimes vestigial, somewhat shortened or broken into two isolated fragments. Intervals convex, those 7, 5 and 3 merging preapically in succession. USS: 14–16.

Ventral side. Prosternal process rounded in dorsal as well as in lateral view, without apical bead; inclination wide and convex, not laterally beaded. Meso- and metathorax densely and rather coarsely punctate except along middle; abdominal sternites II–IV more finely punctate; propleura from same punctate in inner half to smooth.

Legs: fe 3 slender in female; incrassate three fifths from base, with anteroventral (posteroventral) ridge angulate and posteroventral (posterodorsal) ridge toothed, in male; ti 1 with two spinules at apex of posterolateral edge and one postero-apical spinule; ti 3 without lateral setae. Tarsomere 5 glabrous ventrally. Protarsomeres 1–3 dilated and biserially squamose on ventral side in male, simple, with ventro-apical angles toothed, in female.

Aedeagus ( Figs 12–13 , 22, 30 , 43–45): median lobe in lateral view strongly and evenly curved, apex in ventral view lamellate, wide and rounded. Right paramere subtriangular.

Abdominal urites VIII, IX, and reproductive tract in female as in Figs 54–55 and 64–65 .

DISTRIBUTION. Known from the type locality only.

NAME. Refers to the elytra glabrous, i.e., without setae other than USS.

HABITATS AND HABITS. All the specimens were hand collected in cloudy forests at 1.950–2.200 m elevation.

Figures

Figs 1–5. Dorsal habitus: 1 — Pterostichus glabellus sp.n., paratype ♀; 2 — P. unisetosus sp.n., holotype; 3 — P. primitivus sp.n., holotype; 4 — P. subirideus sp.n., paratype ♂; 5 — P. batdaiensis sp.n., paratype ♂ from Sa Pa env. Рис. 1–5. Габитус дорЗально: 1 — Pterostichus glabellus sp.n., паратип ♀; 2 — P. unisetosus sp.n., голотип; 3 — P. primitivus sp.n., голотип; P. subirideus sp.n., паратип ♂; 5 — P. batdaiensis sp.n., паратип ♂ иЗ окрестностей Sa Pa.

Figs 12–21. Aedeagus median lobe: 12–13 — Pterostichus glabellus sp.n.; 14–15 — P. unisetosus sp.n.; 16–17 — P. tonkinensis; 18– 19 — P. austrinus sp.n.; 20–21 — P. subirideus sp.n.; 12, 14, 16, 18, 20 — left lateral aspect; 13, 15, 17, 19, 21 — right lateral aspect. Scale bars 1 mm. Рис. 12–21. СреднЯЯ долЯ Эдеагуса: 12–13 — Pterostichus glabellus sp.n.; 14–15 — P. unisetosus sp.n.; 16–17 — P. tonkinensis; 18– 19 — P. austrinus sp.n.; 20–21 — P. subirideus sp.n.; 12, 14, 16, 18, 20 — слева; 13, 15, 17, 19, 21 — справа. Масштаб 1 мм.

Figs 22–34. Aedeagus: 22, 30 — Pterostichus glabellus sp.n.; 23, 31 — P. unisetosus sp.n.; 24, 32 — P. tonkinensis; 25, 28–29 — P. austrinus sp.n.; 26, 33 — P. subirideus sp.n.; 27, 34 — P. laevibasis sp.n.; 22–26 — median lobe; 28–34 — right paramere, scale as for respective median lobe; 22–25, 27 — ventrobasal aspect; 29–34 — left lateral aspect; 26, 28 — dorsal aspect. Scale bars 1 mm. Рис. 22–34. Эдеагус: 22, 30 — Pterostichus glabellus sp.n.; 23, 31 — P. unisetosus sp.n.; 24, 32 — P. tonkinensis; 25, 28–29 — P. austrinus sp.n.; 26, 33 — P. subirideus sp.n.; 27, 34 — P. laevibasis sp.n.; 22–26 — среднЯЯ долЯ; 28–34 — праваЯ парамера в масштабе соответствуюЩей средней доли; 22–25, 27 — вентробаЗально; 29–34 — слева; 26, 28 — сверху. Масштаб 1 мм.

Figs 52–62. Abdominal urites VIII–IX in female: 52–53, 61 — Pterostichus austrinus sp.n.; 54–55 — P. glabellus sp.n.; 56–57 — P. unisetosus sp.n.; 58–60 — P. laevibasis sp.n.; 62 — P. batdaiensis sp.n.; 52, 54, 56, 58 — tergite VIII; 53, 55, 57, 59 — sternite VIII; 60 — urite IX and reproductive tract, dorsal (a) and ventral (b) aspects; 61–62 — tergite IX, ventral aspect; bc — bursa copulatrix; gsc — gonosubcoxite; LT — laterotergite; ov — common oviduct; sc — seminal canal. Scale bars 1 mm. Рис. 52–62. Уриты VIII–IX брюшка самки: 52–53, 61 — Pterostichus austrinus sp.n.; 54–55 — P. glabellus sp.n.; 56–57 — P. unisetosus sp.n.; 58–60 — P. laevibasis sp.n.; 62 — P. batdaiensis sp.n.; 52, 54, 56, 58 — тергит VIII; 53, 55, 57, 59 — стернит VIII; 60 — урит IX и репродуктивный тракт, дорЗально (a) и вентрально (b); 61–62 — тергит IX, вентрально; bc — копулЯтивнаЯ сумка; gsc — гоносубкоксит; LT — латеротергит; ov — непарный Яйцевод; sc — семепровод. Масштаб 1 мм.

Figs 63–68. Reproductive tract in female: 63 — Pterostichus austrinus sp.n.; 64–65 — P. glabellus sp.n.; 66 — P. strenuus (Panzer, 1796); 67 — P. chameleon; 68 — P. unisetosus sp.n.; 63, 65–67 — ventral aspect; 64, 68 — dorsal aspect; bc — bursa copulatrix; bs — bulbous structure; dv — diverticulum; ov — common oviduct; rp — receptacle; sc — seminal canal; sg — spermathecal gland; sgd — spermathecal gland duct; sp — spermatheca. Scale bars 1 mm. Рис. 63–68. Репродуктивный тракт самки: 63 — Pterostichus austrinus sp.n.; 64–65 — P. glabellus sp.n.; 66 — P. strenuus (Panzer, 1796); 67 — P. chameleon; 68 — P. unisetosus sp.n; 63, 65–67 — вентрально; 64, 68 — дорЗально; bc — копулЯтивнаЯ сумка; bs — бульбарное обраЗование; dv — дивертикул; ov — непарный Яйцевод; rp — семеприемник; sc — семепровод; sg — ЖелеЗа сперматеки; sgd — проток ЖелеЗы сперматеки; sp — сперматека. Масштаб 1 мм.