Cylindera (Ifasina) klimenkoi Matalin, 2023

Matalin, A. V., 2023, An annotated checklist of the species of the subgenus Ifasina Jeannel, 1946, genus Cylindera Westwood, 1831 (Coleoptera, Cicindelidae), from the Philippines, with the description of a new species, Far Eastern Entomologist 473, pp. 1-19 : 6-14

Cylindera (Ifasina) klimenkoi Matalin , sp. n.

https://zoobank.org/NomenclaturalActs/ E3A67286-64B9-46DF-B6F8-FB53524D2E41

Figs 4, 5, 9–11, 13, 16, 17, 20, 21, 30–36, 41–44

TYPE MATERIAL. Holotype – ♂, the Philippines: N Luzon, Aurora, 15 km NW Dingalan , h = 60 m, 20.V 2015, leg. A. Klimenko. Paratypes: 29♂, 10♀ with same labels as holotype; 2♀ (digital images from the web-site https://carabidae.org/) with labels “Hist.-Coll. ( Coleoptera ), Nr 42459, Cicindela macilenta Schaum *, Luzon, Coll. Schaum, Zool. Muz. Berlin” [yellow printed label], “ SYNTYPE, Cicindela macilenta Schaum, 1862 , labelled by MFNB 2022 ” [red printed label] .

Cylindera (Ifasina) spp, habitus, dorsal view (digital images from the web-site https:.carabidae.org\): 1–3 – C. macilenta ; 4, 5 – C. klimenkoi sp. n.; 1, 3–5 – habitus; 2 – labels; 1 – male; 3–5 – females; 1, 2 – lectotype; 3 – paralectotype; 4, 5 – paratypes.

TYPE DEPOSITION. The holotype and 11 paratypes (9♂, 2♀) are deposited in the collection of ZIN ; 13 paratypes (10♂, 3♀) – in the collection of MSPU ; six paratypes (4♂, 2♀) – in the collection of ZMMU ; four paratypes (2♂, 2♀) – in the collection of SIEE ; two paratypes (2♂) – in the collection of SZM ; three paratypes (2♂, 1♀) – in the collection of JW; two paratypes (2♀) – in the collection of MFNB .

Figs 12–21. Cylindera (Ifasina) spp, details: 12, 14, 15, 18, 19 – C. macilenta (12, 14, 15, 19 – Luzon, Nueva Vizcaya, Santa Fe; 18 – Luzon, Nueva Vizcaya, Imugan); 13, 16, 17, 20, 21 – C. klimenkoi sp. n.; 12, 13 – head (12 – left half; 13 – right half); 14–17 – labrum; 18– 21 – pronotum, dorsal view; 12–14, 16, 18, 20 – males; 15, 17, 19, 21 – females; 16, 20 – holotype; 13, 17, 21 – paratypes.

DIAGNOSIS. The new species seems to be particularly similar to C. (I.) macilenta , but it can easily be distinguished by the apical part of the elytra being much more strongly, roof-like elevated along the suture, especially so in females in C. (I.) klimenkoi sp. n. ( Fig. 11 ), vs. only slightly elevated in C. (I.) macilenta ( Fig. 8 ); by the colouration and white pattern of the elytra: an evenly delated middle band without lateral portion and the ante-apical portion of the apical lunule connected to the marginal portion at an obtuse angle (100–125 o) in C. (I.) klimenkoi sp. n. (Figs 4, 5, 9, 10, 30–36), vs. the middle band usually narrow in the centre and with a short lateral portion, as well as the ante-apical portion of the apical lunule connected to the marginal portion at an acute or virtually right angle (78–95 o) in C. (I.) macilenta (Figs 1, 3, 6, 7, 22–29); by the large basodiscal metallic mirror in females of C. (I.) klimenkoi sp. n. (Figs 4, 5, 10, 34, 35, 47), vs. small or extremely to even entirely reduced in females of C. (I.) macilenta (Figs 3, 7, 27, 28, 47); and by the longer and more strongly curved basal portion of the aedeagus in C. (I.) klimenkoi sp. n. ( Figs 41–44 , 46 ), vs. shorter and poorly curved in C. (I.) macilenta ( Figs 37–40 , 46 ).

From C. (I.) mouthiezi Dheurle, 2015 , the new species clearly differs by a complete apical lunule (Figs 4, 5, 9–11, 30–36), vs. incomplete in the former species ( Dheurle, 2015: fig. 3; 2017: figs 1–2), as well as by a pale central area of the labrum (Figs 16, 17), vs. black in the former species ( Dheurle, 2015: fig. 1).

From C. (I.) richouxi Dheurle, 2016 , the new species is reliably different by the humeral lunule separated into a humeral and a basodiscal spot (Figs 4, 5, 9, 10, 30– 35), vs. immaculate shoulders in females ( Dheurle, 2016: fig. 3) or only a small humeral spot in males ( Dheurle, 2016: fig. 1).

Unlike C. (I.) dilatotarsa ( Horn, 1893) , the new species has a rounded, basodiscal white elytral spot (Figs 4, 5, 9, 10, 30–35) and a narrow, not widely dilated second fore-tarsomere in males.

DESCRIPTION. TL in males 7.0–7.7 mm (mean – 7.39 mm, n = 31), in females 7.4–8.2 mm (mean – 7.89 mm, n = 12).

Head metallic bluish-green with distinct golden-bronze tinge on finely rugulose vertex and supraorbital plates; frons, antennal plates and clypeus with copper-gold reflection; genae finely striolate, metallic greenish-blue with light golden tinge. Eyes large, protruding, globose, HW/ PW ( Fig. 45 ) in males 1.5–1.67 (mean – 1.59, n = 31), in females 1.44–1.61 (mean – 1.55 mm, n = 10), supra-orbital plates with 3–4 deep and wide, and 9–10 shallow and narrow furrows, and two setae near each eye: the first seta at anterior edge, the second seta at posterior third (Fig. 13). Labrum pale with a narrow, black-brown, anterior edge and very broad, violet metallic lustered, lateral margins, entirely covered with isodiametric microsculpture, short and transverse, LW/LL in males 2.5–2.86 (mean – 2.56, n = 31), in females 2.2– 2.56 (mean – 2.38, n = 10), with an indistinctly curved anterior edge, a small central tooth and 8–11 (mean – 9, n = 41) submarginal setae placed far away from anterior margin, with neither basal dimples nor a central carina (Figs 16, 17). Mandibles black with greenish-golden-violet tinge at base of molars, pale in basal two-thirds. Labial and maxillary palpi pale (sometimes pre-apical palpomeres darker, yellowish brown) except for metallic, green, apical palpomeres. Antennae very long, extended posteriorly more than two-thirds the length of elytra, black, antennomeres 1–4 metallic greenish blue, 1st antennomere with copper-gold while 2nd–4th ones with purple-violet reflection; scape with a single, long, apical seta, antennomeres 3 and 4 with 4–5 and 1–2 short white spiniform setae, except apical ones, respectively, antennomeres 5–11 black, regularly covered with short yellow pubescence.

Pronotum longitudinal, PL / PW in males 1.11–1.19 (mean – 1.14, n = 31), in females 1.0–1.07 (mean – 1.05, n = 12), with two irregular rows of sparse, white, decumbent setae along indistinctly rounded lateral sides and 5–6 setae at each anterior angle; pronotal disc finely and shallowly rugulose, metallic bronze with copper-green reflection; midline shallow and indistinct with a small depression anteriorly; anterior and posterior transverse grooves relatively deep, the latter with small basal pits (Figs 20, 21). Pro-episternum metallic greenish blue basally and copper-bronze with golden luster apically; with sparse white semi-erect hairs. Thoracic sternites metallic bluish green with golden shine, pro- and mesosternum glabrous, metathorax covered with white decumbent hairs.

Legs long and slender, entirely violet except for light brown trochanters, with greenish-gold reflection along anterior surface of femora and at the base of tibiae; femora, as well as fore and hind tibiae with sparse, white, erect setae, apical half of mid-tibiae with numerous, very dense, white, erect setae along bottom surface; tarsomeres with short setae on bottom surface, in males fore-tarsomeres 1–3 distinctly thickened, 3rd one clearly dilated, 4th and 5th ones very thin; claws thin and moderately long.

Elytra elongated oval; tapering towards apex; strongly elevated roof-like, especially so in females, along the suture in apical part of elytra ( Fig. 11 ); EL/EW in males 1.69–1.88 (mean – 1.79, n = 32), in females 1.64–1.83 (mean – 1.72, n = 12); copper-bronze with golden reflection except for a dull central area and numerous, evenly spaced, bright, blue points; suture with blue tinge, subsutural area green, scutellum bronze with greenish copper edges; a very narrow marginal edge deep blue, apical margin narrowly rounded, finely serrulate, sutural tooth small, epipleura brown with greenish blue tinge in basal quarter; white elytral pattern consisting of a disrupted humeral lunule separated into small a humeral and a basodiscal spot, a relatively narrow, clearly sinuate, median band with a distinct, rounded, apical knob, but without marginal portion, and a complete, narrow, apical lunule with its ante-apical portion connected to marginal portion at an obtuse angle – 100–125 o (Figs 4, 5, 9, 10, 30–36); in females additionally with a metallic golden-green patch behind humeral spot and a large, metallic, purple-bronze, subsutural mirror, 3.43– 9.2 (mean – 5.32, n = 12) times large than the white basodiscal spot (Figs 4, 5, 10, 34, 35, 47).

Abdominal sternites metallic greenish blue, regularly covered with white decumbent hairs. Aedeagus slender, moderately expanded in apical third, with a short, relatively broad apex and a long, thin, clearly curved, basal portion; AL 2.6–2.8 mm (mean – 2.7, n = 31), EL/AL ( Figs 45, 46 ) 1.59–1.74 (mean – 1.67, n = 31); internal sack with ten sclerites, including a long flagellum forming 2.5 turns and a relatively long, slightly curved, median tooth ( Figs 41–44 ).

A V-shaped posterior emargination of sternum VIII of female with 3–4 thick setae on each broadly rounded apex and 5 very small and thin setae along lateral margins. Syntergum 9 and10 weakly sclerotized, 1.25–1.3 times longer than wide, with 25–27 long lateral setae. Second gonapophyses strongly curved; ventral notch of second gonacoxa shallow, with a sparse row of very small and thin setae, the largest four being anterior ones. Bursa copulatrix ovoid, oviduct sclerite mediumsized.

ETYMOLOGY. The new species is dedicated to Alexei Klimenko, a Russian entomologist and my late good friend, (1970–2017) who collected the type series of this new species.

DISTRIBUTION. Known only from the type locality – environs of the town of Dingalan, Aurora Province, Luzon Island ( Fig. 48 ) .

NOTE. Due to a new species is similar with C. macilenta the specimens of the later one should be re-examined for clarification of the distribution area of these species.

Figures

Figs 6–11. Cylindera (Ifasina) spp, habitus: 6–8 – C. macilenta (Luzon, Nueva Vizcaya, Santa Fe); 9–11 – C. klimenkoi sp. n.; 6, 9 – males; 7, 8, 10, 11 – females; 9 – holotype; 10, 11 – paratypes; 6, 7, 9, 10 – dorsal view; 8, 11 – left lateral view.

Figs 37–44. Cylindera (Ifasina) spp, aedeagus, left lateral view: 37–40 – C. macilenta (specimens from: 37 – Luzon, Nueva Vizcaya, Santa Fe; 38, 39 – Luzon, Nueva Vizcaya, Imugan; 40 – Luzon, Quezon, Mt. Banachao); 41–44 – C. klimenkoi sp. n.; 41 – holotype; 42–44 – paratypes; f – flagellum; mt – median tooth.

Figs 45–47. Morphometric features of Cylindera (Ifasina) spp: 45 – relation of the proportions elytra, head and pronotum (circles – C. klimenkoi sp. n.; rhombus – C. macilenta; open symbols – males; solid symbols – females; HT – holotype of C. klimenkoi sp. n.; LT – lectotype of C. macilenta; PLT – paralectotype of C. macilenta; PT – paratype of C. klimenkoi sp. n., former syntype of C. macilenta); 46 – relation of the proportions elytra and aedeagus; 47 – relation of the square of subsutural mirror and basodiscal spot; rectangle – 25–75 percentiles; horizontal line in rectangle – median; whiskers – SD; significantly different samples are marked with different lower case letters, according to Mann–Whitney U-test, p <0.05 (46 – U = 0, z = -3.546, p = 0.000, Monte Carlo p = 0.0001; 47 – U = 0, z = - 2.528, p = 0.012, Monte Carlo p = 0.0045).

Fig. 48. Distribution of Cylindera (Ifasina) spp. in the Philippines: red solid circle – C. macilenta; red half-solid circle – C. mouthiezi; red crossed-circle – C. klimenkoi sp. n.; red open circle – C. richouxi; orange solid triangle – C. foveolata; blue solid rhomb – C. semperi; blue half-solid rhomb – C. fabiocassolai; blue crossed-rhomb – C. balabacensis; blue open rhomb – C. rizali; blue asterisk – C. viduata; lilac solid quadrat – C. dilatotarsa; lilac open quadrat – C. discreta elaphroides. Map source: https:.en.wikipedia.org/wiki/Philippines#/ media/File:Relief_Map_Of_The_Philippines.png