Thinobius micros Fauvel, 1871

Makranczy, György, 2014, Synonymies In The Holarctic Thinobius Major And Linearis Species Groups (Coleoptera: Staphylinidae: Oxytelinae), Acta Zoologica Academiae Scientiarum Hungaricae 60 (1), pp. 13-38 : 33-34

publication ID

https://doi.org/ 10.5281/zenodo.5732150

persistent identifier

https://treatment.plazi.org/id/F21687A6-5674-FFF2-FDB8-FC0FFB9923B8

treatment provided by

Felipe

scientific name

Thinobius micros Fauvel, 1871
status

 

Thinobius micros Fauvel, 1871 View in CoL

( Figs 6 View Figs 1–6 , 18 View Figs 13–26 , 35–37 View Figs 34–40 , 44, 48–50)

Thinobius micros FAuvel, 1871: 163 View in CoL [= 1872: 137].

Thinobius algiricus FAuvel, 1898: 94 View in CoL ., syn. n.

Thinobiusernesti BeRNhAueR, 1908: 332. (newsynonyminSChülKe & MAKRANCZY 2011)

Examinedtypematerial – Thinobiusmicros Fauvel – Lectotype (m), bypresentdesignation: “Fréjus \ micros; Fauv. \ R. I.Sc. N.B. 17.479; Coll. etdet. A. Fauvel \ Syntype \ m \ Lectotypus; Thinobius ; microsFauvel; des. Makranczy, 2001 \ Thinobius ; micros Fauvel ; det. Makranczy, 2010” ( ISNB); Paralectotypes (4): samedataaslectotype (1m, 3f, ISNB); Thinobiusalgiricus FAuvel – Lectotype (f), bypresentdesignation: “[ Algeria: Djebel] Ouarsenis \ confonduavec; longipennis \ algiricus; Fvl. n. sp.; Désiré [underlined] \ Ty- pus \ Collection; Vauloger \ Lectotypus; Thinobius ; algiricusFauvel; des. Makranczy, 2010 \ Thinobius ; microsFauvel; det. Makranczy, 2010” (coll. Peyerimhoff, MNHP); [Forthe type of Thinobius ernesti , see Makranczy & Schülke, 2001: 191.] .

Redescription – Measurements (in mm, n=6): HW = 0.20 (0.19–0.20); TW = 0.19 (0.185– 0.20); PW = 0.21 (0.205–0.22); SW = 0.22 (0.21–0.22); AW = 0.24 (0.23–0.24); HL = 0.18 (0.17– 0.19); EL = 0.07 (0.06–0.07); TL = 0.05 (0.05–0.06); PL = 0.17 (0.16–0.175); SL = 0.28 (0.26–0.29); SC = 0.24 (0.23–0.25); FB = 0.61 (0.59–0.64); BL = 1.10 (1.03–1.19). Body ( Fig. 6 View Figs 1–6 ) very slightly bicoloured. Head, pronotumandabdomenslightlyreddishdarkbrown, elytrareddish mediumbrownwithadarkerareabehindscutellumextendingtoshoulders. Legsand mouthpartsmediumbrown, apicesoffemoraandbothendsoftibiaeoftenlighter, together withtarsi; basalpartofantennamuchlighter (yellowish) thanapicalarticles, latteroften significantlyblackish. Forebodywithveryfinecoriaceousmicroreticulation, ratherdull. Punctationonforebodyratherdenseandsofinethathardlydiscernible. Discsofabdominaltergiteswithaparticulartypeoftransversalmicrosculptureandlongitudinalmicrosetationarrangedintheminutetransversalridgesthatcausesaslightiridescenteffect. Pu- bescenceonforebodydepressedandveryshort, fineanddense (onelytrathemostdense), onabdomenapicesoftergiteswitharowoflonghairs, andasparsesetationcomposedof similarbutshorterhairs; abdominalsidesandapexwithafewdarkerandstrongerbristles. Strongdarkbristleonoutersideofsupraantennaltubercleatanteriorborderofeye (thosenearouterposterioredgeofvertexweaklydeveloped), similaronesrightbehind anteriorpronotalcornerandonsideat 3/5 length. Setationanteriorlydirectedonheadand pronotum, directionposterioronelytraandabdomen. Antennaewithlonger, darkerhairs onbasalarticles, legsandmouthpartswithveryshort, notconspicuoussetation, exceptfor thestiff, darkermid-tibialhairsondonesnearapicesoffemora. Sidesofelytrawiththree suchstiffsetaeaboutequallydistributedonlengthofside.

Headslightlywiderthanlong, templesusuallystraight, withagentlecurveonthe side, roundedonposteriorpart. Middleofvertexverygentlyimpressed. Anteriorborder ofneckisstronglymarkedwithashiny, arched, deepgroove. Frontoclypealsutureappear- ingasweakgrooveandadarkline (visibleonlyifheadlighter) connectingsupraantennal tubercles, similarlydarkerspotssituatedatbothsidesonmiddleofvertex. Supraantennal tuberclesmoderatelydeveloped, separatedfromvertexbylongitudinalimpression. An- tennaemoderatelyshort ( Fig. 18 View Figs 13–26 ), 6thantennomereappearingaswideasadjacentones.

Pronotumweaklytransverse, 1.25× widerthanlong, justatinybitwiderthanhead, withonlytracesofimpressionsinanteriorhalfofmiddleofdiscandnearanteriorcor- ners. Anteriorcornersmoderatelyweaklyrounded, posteriorcornersverybroadly, sides almostinarchwithposteriormargin. Pronotalmarginalbeadvisibleonposteriormargin, anteriormarginslightlypulledaheadinmiddlebutwithoutvisiblemarginalbead. Scutellumsmall, ifexposed, shinierthanadjoiningareas. Elytralong, oneelytronabouttwice aslongasbroad, quiteflatandparallel-sided (verygentlydilatingposteriorly). Shoulders moderatelydeveloped. Alongsuturewithouteventracesofmarginalbead; suturalcorners broadlyrounded. Legsofmediumlength, tarsallobessmallandthin, inconspicuous, tibiae fusiform, appearmuchwiderinmiddlethanatends.

Abdomenveryweaklyfusiform, sidesmoreorlessstraightandparallel; widestat 1/3 length, justveryslightlylesswidethanelytraatbroadestpoint. Posteriormarginoftergite VIIwithpalisadefringeandposteriorcornersbroadlyrounded.

Primaryandsecondarysexualfeatures: Sexesnotappearingdifferentinregulardor- salview. PosterioredgeoftergiteVIII (similarinbothsexes) gentlyconcave, arched. Male sterniteVIIIasinFig. 35 View Figs 34–40 , tergiteIXasinFig. 36 View Figs 34–40 , sterniteIXasinFig. 37 View Figs 34–40 . AedeagusasinFig. 44. FemalegenitalappendageasinFig. 48, spermathecaasinFigs 49–50.

Distribution – Obviouslyaveryrareandlocalspecies, possiblyextinctfrommost ofitsformerrange. ThisisindicatedbyitsoldrecordfromAustria, whilenotcollectedin CentralEuropeinthepastcentury. TheNorthernAfricanoccurrencesuggeststhatitoriginallyhadcircum-mediterraneandistribution.

Remarks – Theaedeagusdrawingof “ T. ernesti ” inMAKRANCZYandSChül- Ke (2001) wasmadebasedonitspoorlypreservedholotypewiththeaedeagus ratherdistorted. Theherepresentednewillustrationisbasedonmorespecimens, improved, soshouldsubstitutefortheearlierfigure. Therearestillonly therespectivetypematerials (morethanahundredyearsold) availableforthis species. SincePeYeRimhoff’ s (1931) identification (basedonatypestudy) of “ T. algiricus ” isincorrectandinfactreferstoaverysimilarbutsignificantlylarger, clearlydistinctspecies, thelatterhastobedescribedasnewbelow.

R

Departamento de Geologia, Universidad de Chile

MNHP

Princeton University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Thinobius

Loc

Thinobius micros Fauvel, 1871

Makranczy, György 2014
2014
Loc

Thinobius algiricus FAuvel, 1898: 94

FAuvel, A. 1898: 94
1898
Loc

Thinobius micros FAuvel, 1871: 163

FAuvel, A. 1872: 137
FAuvel, A. 1871: 163
1871
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