Sulciclivina sagittaria sagittaria ( Bates, 1892 )

Balkenohl, Michael, 2023, Revision of the genus Sulciclivina Balkenohl, 2022 from Asia (Coleoptera, Carabidae, Clivinini), European Journal of Taxonomy 915 (1), pp. 1-57 : 42-45

Sulciclivina sagittaria sagittaria ( Bates, 1892)

Figs 3 , 20 , 34, 50, 53

Clivina sagittaria Bates, 1892: 275 (original description).

Clivina sagittaria – Csiki 1927: 510 (catalogue). — Andrewes 1929: 358 (redescription); 1930: 116 (catalogue). — Balkenohl 2001: 16 (catalogue). — Kult 1951: 25 (enumeration). — Lorenz 2005: 134 (catalogue); 2022: 5ZCD6 (catalogue).

Sulciclivina sagittaria – Balkenohl 2022: 108, fig. 46 (figures of gonocoxites and new combination).

Diagnosis

A small-sized species with the pronotum as long as wide or slightly longer than wide and distinct clypeal wings. Mainly distinguished from the other members of the sagittaria- species group by the clypeal wings, which are developed as sharp teeth. In addition, the lateral margin of the pronotum is more attenuated anteriorly as in the other members of the species group.

Type material

Lectotype (by present designation)

MYANMAR • ♂; with labels and data: white, black framed, printed and handwritten in black ink “Rangoon Birmania Fea VI 1887 ” / white, handwritten in black ink “ Cl. sagittaria es. Tip. Bat.” / circle, green framed “Co-type” / white, printed “Bought from Janson,1917.” / “ H.E.Andrewes Coll. B.M.1945- 97.” / red, black printed “LECTOTYPE Sulciclivina sagittaria sagittaria ( Bates, 1892) des. M.Balkenohl 2023”; NHMUK.

Paralectotypes

MYANMAR • 1 ♀; with labels and data: white, black framed, printed and handwritten in black ink “ Rangoon Birmania Fea VI 1887 ” / circle, green framed “Co-type” / white, handwritten in black ink and printed “ Clivina sagittaria Bates H.E.Andrewes det.” / white, handwritten and black printed “Gesch. 8. 1938 von Andrewes” / white, black printed “F. van Emden Bequest B.M. 1960-129.”; NHMUK • 1 ♂; with labels and data: white, black framed, printed and handwritten in black ink “ Rangoon Birmania Fea VI 1887 ” / circle, green framed “Co-type” / beige, handwritten in black ink “Civina sagittaria Bts. ”; ETHZ • 1 ♂; with labels and data: white, black framed, printed and handwritten in black ink “ Rangoon Birmania Fea VI 1887 ” / white, handwritten in black ink “sagittaria Bates ” / white, black printed “Zool. Mus. Berlin” / white, black printed “ Clivina sagittaria BATES det. Balkenohl, 1996”; MFNB • 1 ♂, 1 ♀; on the same pin with labels and data: white, black framed, printed and handwritten in black ink “ Rangoon Birmania Fea VI 1887 ” / white, handwritten in black ink “ Cliv. sagittaria n.sp. ” / white, black framed, red printed “Syntype”; RBINS .

Taxonomic remark

For the selection of the lectotype out of the series of six available cotypes, two considerations were applied. On the one hand, a complete male specimen, in good condition and not rotten inside, was selected. In addition, this specimen is the only one bearing the additional label in Italian language by Leonardo Fea “ Cl. sagittaria es. tip. Bat.”, which is an abbreviation of ‘esempio tipo Bates’ and means ‘type specimen of Bates’. The material of S. sagittaria collected by L. Fea was distributed and even sold to several places (written information from M.V.L. Barclay, NHMUK). The type series including the lectotype of S. bhamoensis (Bates) , also collected by L. Fea in Myanmar was deposited in NHMUK where Bates often worked.

Redescription

MEASUREMENTS. Lectotype: body length 4.87 mm, width 1.34 mm; L/W of pronotum 1.08; L/W of elytra 1.97. All material: body length 4.68–4.98 mm (ẍ: = 4.83 mm *), width 1.25–1.36 mm (ẍ: = 1.3 mm *), L/W of pronotum 1.03–1.11 (ẍ: = 1.08*), L/W of elytra 1.95–2.01 (ẍ: = 1.99*); (*n = 6).

COLOUR. Glossy. Piceous. Mouthparts, elytron, intermediate and hind leg, tarsomeres of front leg fuscous, antenna and palpomeres more pale fuscous. Anterior part of supraantennal plate at the margin translucent-fuscous.

HEAD. A quarter narrower than pronotum. Clypeus with central part distinctly bilobed anteriorly; lateral lobe developed as acute teeth, slightly more projecting than central lobes, clypeal wings well developed, sharp, not as far projecting anteriorly as lateral teeth of clypeus, distinctly separated from clypeus by notch; supraantennal plate laterally moderately convex, laterally nearly as far projecting as eye; supraantennal plate finely reflexed margined. Supraantennal plate overlapping eye anteriorly by about a quarter (dorsal view), with the supraorbital carina keeled posteriorly and extended up to mid-eye level, separated from wing by sharp notch. Clypeus transverse, separated from frons by sharp carina in form like an inverted nearly right-angled V. Frons moderately convex, with another but smaller carina like an inverted V, with supraorbital carina short, extending up to posterior eye-level. Clypeus smooth, area between V-like carinae smooth, frons with two to three longitudinal rugae at middle to posterior eye-level, clypeus and frons separated from supraantennal plate and supraorbital carina by deep and moderately wide furrow; with two supraorbital setigerous punctures at middle of the eye and end of gena-level. With some moderately sized punctures laterally at level of neck, punctures less dense or missing at middle. Eye small, encased, moderately convex in dorsal view, main part situated ventrally where it is more distinctly convex. Gena moderately convex, covering around a sixth of posterior eye in ventral view. Eye somewhat constricted due to the overlapping supraantennal plate and the genae. Antenna moderately long, reaching distinctly over middle of pronotum, antennomeres five to ten distinctly longer than wide (L/W around 1.23). Labrum straight anteriorly, with isodiametric-irregular reticulation, six setose. Mandibles sub-falcate slightly bent up dorsally. Mentum with isodiametric reticulation at middle, with lobe flattened, with few fine carinae on surface, shape of lobe asymmetric slightly longitudinal oval, with sharp median carina. Median tooth moderately wide, not as projecting anteriorly as lobe, rounded and hollowed out anteriorly.

PRONOTUM. Disk slightly convex in lateral and distinctly convex in frontal view. Slightly longer than wide, peltate. Reflexed lateral margin nearly smooth, straight in anterior half, widest behind middle; anterior angle distinct, slightly projecting, posterior angle indistinct; lateral channel moderately wide, crenulated, narrower before and behind posterior setigerous puncture, slightly curved upward at posterior setigerous puncture with small tooth (lateral view). Median line moderately deep, sharp, subcrenulated, complete. Anterior transverse line crenulated, slightly wider than median line, joining median line, joining declivity at anterior margin. Surface glossy, with micro-punctures, with paralateral impression basally formed by impressed punctures, with paramedian cloud-like longitudinal group of punctures of moderate size, with few transverse wrinkles laterally and basally. Base distinctly marked, channel two times as wide as lateral channel, width about a fifth of width of pronotum. Proepisternum moderately well visible in dorsal view.

ELYTRON. Shape long-oval, indistinctly clavate. Disk flattened in anterior half in lateral view, distinctly and regularly convex in frontal view. Nearly two times longer than wide, with maximum width distinctly behind middle. Reflexed lateral margin smooth, setigerous punctures in lateral channel with long yellow setae, interrupted at middle by one puncture. Scutellar striole missing; setigerous tubercle at base of first stria, with distinct tubercle at base of third interval, basal declivity with isodiametric reticulation. Humeral tooth situated at base of fourth interval. All striae distinctly deepened, punctuate-striate, one to three free at base, four reaching humerus, one and two, three and four, and five and six joining apically. Intervals distinctly convex, more convex laterally. Setigerous punctures missing on intervals. Surface of all intervals glossy, interval seven and eight with indistinct reticulation at humerus, interval eight at apex subcarinate and with indistinct reticulation.

HIND WINGS. In the lectotype, the alae are reduced to half of the length and width of the elytron looking like a longitudinal spatula. In two specimens, there are no alae visible and in another two the alae are as in the lectotype. In one specimen, the alae are fully developed.

LOWER SURFACE. Proepisternum covered with dense moderately sized punctures, laterally with some irregular reticulation and with dense transverse wrinkles.All sternites of abdomen covered with moderately large punctures, with slightly less density at middle at middle.

LEGS. Protibia covered with longitudinal reticulation, sulcate dorsally at base, with three spines of moderate length, apical spine distinctly arcuate, movable spur robust, in apical half moderately arcuate.

MALE GENITALIA (Fig. 34). Median lobe moderately slender in dorsal view, relatively short in comparison to body size, regularly arcuate at middle, with moderate dorsal bulge, apex with moderately long, flattened, slightly widened, and distorted spatula, with few microtrichia on the surface. Endophallus at middle with longitudinal group of bristles. Ventral paramere with somewhat widened velum-like apophysis, apex with two setae. Dorsal paramere robust, attenuated to apex, with three apical setae.

FEMALE GONOCOXITE AND EPIPLEURITE (Fig. 50). Gonocoxite conical-shaped, flattened dorsally and ventrally, with three nematiform setae positioned at the median side, with one preapical long nematiform seta. Epipleurite semi-rectangular, with conspicuously widened angulated rod.

Variation

On the frons of the head, the posterior smaller carina is anteriorly not closed in some of the specimens. In about half of the specimens, there is a deep impression posterior to the smaller carina (not developed in the LT). On the pronotum, the lateral channel varies with the development of the crenulation. In addition, the number of punctures on the disk varies. In a third of the specimens, the lateral margin of the elytron is indistinctly crenulated behind the humerus, and in a few specimens stria one and two are not joining at apex respectively at one side, whereas the striae are joining at the other side.

Sexual dimorphism

Secondary sexual characters not observed.

Distribution

Known from the type locality in Rangoon, Myanmar.

Figures

Figs 1–3.Sulciclivina Balkenohl, 2022, head in dorsal view, showing the specific terms used. 1. Sulciclivina attenuata attenuata (Herbst, 1806), ♀, lectotype (MFNB). 2. S. splendida sp. nov., ♂, holotype (NHMB). 3. S. sagittaria sagittaria (Bates, 1892), ♂, paralectotype (NHMUK).

Figs 20–23. Sulciclivina Balkenohl, 2022, habitus, dorsal view. 20. S. sagittaria sagittaria (Bates, 1892), ♂, paralectotype (NHMUK). 21. S. sagittaria singaporensis subsp. nov., ♀, holotype (NHMUK). 22. S. oculiangusta sp. nov., ♀, holotype (NHMUK). 23. S. andrewesi sp. nov., ♂, holotype (NHMB).