Thinodromus capensis ( Bernhauer, 1934 )

Makranczy, György, 2013, Review of the southern African species of Thinodromus (Coleoptera: Staphylinidae: Oxytelinae), Acta Entomologica Musei Nationalis Pragae 53 (1), pp. 177-208: 203-204

publication ID

http://doi.org/10.5281/zenodo.5739643

publication LSID

lsid:zoobank.org:pub:7C777493-A98F-4667-B55D-848B9CD9F6F9

DOI

http://doi.org/10.5281/zenodo.5911275

persistent identifier

http://treatment.plazi.org/id/03CEDF09-FFEE-F35C-D1B9-92A0D898FDA1

treatment provided by

Marcus

scientific name

Thinodromus capensis ( Bernhauer, 1934 )
status

 

Thinodromus capensis ( Bernhauer, 1934)  

( Figs 4 View Figs 4–6. 4 , 7–9 View Figs 7–12. 7–9 , 70–74 View Figs 70–76. 70–74 , 79 View Figs 77–80. 77–78 )

Trogophloeus (Carpalimus) capensis Bernhauer, 1934: 486   .

Thinodromus capensis: GILDENKOV (2000: 54)   .

Trogophloeus (Carpalimus) montiumdraconis Scheerpeltz, 1974a: 57   , syn. n.

Thinodromus montiumdraconis: GILDENKOV (2000: 51)   .

Type material examined. Trogophloeus (Carpalimus) capensis Bernhauer   – LECTOTYPE (here designated): ♀, “ Port St. John[s] [31°37′S, 29°32′E],; Pondoland.; Aug.7-13.1923 \ S. Africa.; R.E.Turner; Brit. Mus.; 1923-422. \ capensis; Brh. Typus; Carpalimus \ capensis Brnh.   ; Cotyp. \ Chicago NHMus; M. Bernhauer; Collection \ Lectotypus; Trogophloeus   ; capensis Bernhauer   ; des. Makranczy, 2013 \ Thinodromus   ; capensis (Bernhauer)   ; det. Makranczy, 2013” ( FMNH). GoogleMaps   Trogophloeus (Carpalimus) montiumdraconis Scheerpeltz   – HOLOTYPE: ♂, “S. Afr. [Eastern] Cape Prov.; Drakensbergen 5 miles ; ENE Rhodes [30°45′28″S, 28°02′25″E, 1970 m]; 10.III.[19]51. No. 222 \ Swedish South Africa; Expedition; 1950-1951; [P.] Brinck - [G.] Rudebeck \ Trogophloeus   ; (Carpalimus); montiumdraconis; n.sp. \ Holotypus \ Typus; Trogophloeus   ; montium-; draconis; O. Scheerpeltz \ Trogophloeus   ; (Carpalimus); montiumdraconis; n.sp.; det. Scheerpeltz. 1968 \ Zool. Mus. Lund Sweden; Staphylinidae   ; Type No.; 590:1 \ ZML 2002; 121” ( ZMLU). GoogleMaps  

Other material examined. REPUBLIC OF SOUTH AFRICA: [Western] Cape, Swartberg, Meiringspoort , cent., 33°25′S, 22°33′E 1.xi.1993, leg. S. Endrődy-Younga (E-Y 2925), shorewashing (1 ♂, TMSA; 1 ♀, BMNH) GoogleMaps   ; Eastern Cape (Transkei), Dwesa Nat. Res. [= Dwesa-Cwebe Wildlife Reserve] ( The Haven ), 4-6.xii.2003, leg. W. Schawaller (1 ♀, SMNS)   ; Natal, Cathedral Peak , 28°57′S, 29°12′E 18.iii.1976, leg. S. Endrődy-Younga (E-Y 1101), air plankton (1 ♀, TMSA) GoogleMaps   .

Redescription. Measurements (in mm, n = 5): HW = 0.56 (0.545 –0.595); TW = 0.50 (0.475–0.53); PW = 0.62 (0.60–0.65); SW = 0.78 (0.76–0.81); AW = 0.86 (0.83–0.90); HL = 0.36 (0.33–0.39); EL = 0.19 (0.18–0.20); TL = 0.06 (0.055 –0.065); PL = 0.46 (0.44–0.47); SL = 0.76 (0.74–0.80); SC = 0.70 (0.67–0.74); FB = 1.60 (1.54–1.68); BL = 3.02 (2.78–3.25). Lustre and colour: Body ( Fig. 4 View Figs 4–6. 4 ) rather shining because of large unsculptured interspaces of punctures, but loosely covered by long pubescence. Head and abdomen blackish dark brown with a reddish tint, apices of abdominal segments seem lighter, reddish-yellowish. Pronotum reddish dark brown, deflexed side margin and centre of disc appear darker. Elytra medium to dark brown, with strong reddish tint, shoulders, scutellar area and a stripe from 2/3 suture length to the outer posterior corner appear darker; a conspicuously brighter, more narrow stripe extends along posterior edge from sutural corner till almost the outer posterior corner). Mouthparts and antennae medium to light brown, first (and partly second) antennomere lighter; legs almost unicolorous medium to light brown. Shape and sculpture: Head ( Fig. 7 View Figs 7–12. 7–9 ) rather small (appearing less transverse than in other species), eyes less prominent but still occupy most of sides. Temples well discernible, marked by an unusually broad, smooth rim around posterior edge of eyes, not shaded by setation. This rim meets the rest of temple in a sharp, curved edge. Pronotum transverse, but less so as in most species, first half of sides and anterior corners broadly rounded, side margin slightly concave in the hind half, posterior corners rounded but still discernible for the angle being less obtuse. Horseshoe-shaped impression deep and rather broad but does not continue anteriorly along sides nor approaches the side margin much, therefore appears as a broad transversal groove across hind part of disc. Deflexed margin most apparent at posterior corners but discernible anteriorly in posterior 3/5 of pronotal length; posterior margin well visible but not too broad. Elytra ( Fig. 9 View Figs 7–12. 7–9 ) combined somewhat broader than long, slightly dilated posteriorly. Posterior elytral margin with an unusually broad membranous lobe all along the outer 2/5. Abdomen seems to be a little bit constricted at base and unusually parallel-sided as opposed to other species where strongly narrowing behind middle. Apex of tergite VII with palisade fringe (widest medially). Punctation and microsculpture: Head punctation deep with punctures of very uneven sizes and interspaces, but latter occupies at least half of the surface and free of microsculpture, very shiny. Pronotum with similar punctation, only a tiny patch in posterior corner with some scabrous microsculpture. Elytra with even larger and deeper punctures, yet with ample shiny interspaces. Abdominal terga very roughly but sparsely punctured, puncture sizes decrease towards apical margin. Almost no traces of microsculpture in groove behind basal ridges of terga (punctation very dense here). Pubescence: Forebody with lighter coloured setae of varying size, rather sparse but predominantly long, erect setae; short interommatidial setae present without longer setae. Abdomen with sparse but long setae, with a few exceptionally long ones at apices of terga. On head, pronotal disc and abdominal tergum bases some shorter and finer setae noticeable. Primary and secondary sexual features: Male antennae ( Fig. 8 View Figs 7–12. 7–9 ) rather elongate, middle antennomeres (articles 4–5) almost twice as long as broad, penultimate antennomeres (articles 9–10) about as long as broad. Female antenna (on Fig. 4 View Figs 4–6. 4 ) with middle antennomeres (articles 4–5) less than a half longer than broad, penultimate antennomeres (articles 9–10) just imperceptably broader than long. Male: MA of aedeagal internal sac elongate, outward curved at proximal end, ML transverse, BM very elongate and pin-like, BA long, slender with slight curve, proximal part tuberculate, distal end with foot-like formation, AC reverse V-shaped with arms in acute angle ( Figs 72–74 View Figs 70–76. 70–74 ), sternite VIII ( Fig. 70 View Figs 70–76. 70–74 ), tergite X ( Fig. 71 View Figs 70–76. 70–74 ); female: ringstructure ( Fig. 79 View Figs 77–80. 77–78 ).

Differential diagnosis. Thinodromus capensis   appears to be allied to T. nigerius   . Besides the obviously similar apices of the female ringstructures, the most important similarity that unites these species is the formation of the subapical edge of median lobe body that contains a single sclerotized plate with an apical incision/desclerotization along the midline. For comparision with T. nigerius   the sclerotized subapical plate of median lobe ( Fig. 75 View Figs 70–76. 70–74 ) and the apical copulatory sclerite ( Fig. 76 View Figs 70–76. 70–74 ) of the latter species are provided here, these are drawn from a South African specimen. Other shared character states include male sternite VIII with a more or less truncate apex, without much trace of any modification in the middle as regards sclerotization (most species have there either a projection or incision, and almost all with an inwards pulled border of the stronger sclerotized part of the plate). AC similar, but its arms a little incrassate at the base in T. gabonicus   , most other internal sclerites rather thread-like in both species. The examined material markedly varies in the form of the temples, but are consistent in the lighter marked sutural corner that distinguishes the taxon from all other described southern African species.

Distribution. This species is still only known from the Republic of South Africa.

Remarks. The identity of Thinodromus capensis   has long been controversial. The description does not state how many specimens were at hand, but gives “Pondoland: Port St. Johns (7th- 13th August 1923) (R. E.Turner)” as the specimen data. Of the two specimens marked as types by previous curators (one female in FMNH and another female in BMNH), only the FMNH specimen bears the locality data corresponding to the original description and is considered to be the only syntype. This specimen is designated here as the lectotype. The BMNH specimen bears different collecting dates which indicates it comes from a collecting event not referred to in the original description. Moreover, this specimen doubtlessly represents a different species described below as T. meridionalis   sp. nov. SCHEERPELTZ’ s (1974) use of the name T. capensis   agrees with the identity of the BMNH specimen and therefore refers to T. meridionalis   sp. nov. Bernhauer later identified one more specimen from Angola as T. capensis   , which W. O. Steel found not to be conspecific with the BMNH specimen considered as type of T. capensis   . This specimen is identified here as T. facilis   (see below).

FMNH

Field Museum of Natural History

ZMLU

Lunds Universitet, Zoologiska Institutionen

TMSA

Transvaal Museum

SMNS

Staatliches Museum fuer Naturkund Stuttgart

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Thinodromus

Loc

Thinodromus capensis ( Bernhauer, 1934 )

Makranczy, György 2013
2013
Loc

Thinodromus capensis: GILDENKOV (2000: 54)

GILDENKOV M. & YU 2000: )
2000
Loc

Thinodromus montiumdraconis:

GILDENKOV M. & YU 2000: )
2000
Loc

Trogophloeus (Carpalimus) montiumdraconis

SCHEERPELTZ O. 1974: 57
1974
Loc

Trogophloeus (Carpalimus) capensis

BERNHAUER M. 1934: 486
1934