Andrion regensteinense (Herbst, 1794)

Sprick, Peter, 2017, Description of the larvae and pupae of eight species of the tribe Sitonini Gistel, 1848 (Coleoptera, Curculionidae) from Central Europe, Zootaxa 4324 (3), pp. 401-435 : 415-416

Andrion regensteinense (Herbst, 1794)

( FIgS 27–29A )

Body. LeNgTH: 3.0–4.4 MM, WIDTH: 2.0–2.8 MM, HeAD WIDTH: 0.85–0.90 MM, PROTHORAX WIDTH: 1.0–1.2 MM (♀, ♂). EYeS RelATIVelY bIg, eVeNlY cONVeX. BODY elONgATe, SleNDeR, WHITe OR gRAYISH. PRONOTUM TRAPeZIUM-SHAPeD, WITH IRRegUlAR SURFAce, APPROXIMATelY AS 1.75 TIMeS AS WIDe AS lONg. MeTANOTUM AlMOST TWIce THe leNgTH OF MeSONOTUM. AbD. I–IV OF AlMOST eQUAl leNgTH, AbD. V –VII DIMINISHINg gRADUAllY, AbD. VIII SeMIcIRcUlAR, AbD. IX DISTINcTlY SMAlleR THAN THe PReceDINg SegMeNTS. UROgOMPHI RelATIVelY elONgATe, cURVeD AND Well ScleROTIZeD.

Chaetotaxy. SeTAe OF UNeQUAl leNgTH AND SHAPe, YellOW OR bROWN; ON HeAD, ROSTRUM AND THORAX HAIR-lIke, bASeD ON SMAll PROTUbeRANceS, ON AbDOMINAl SegMeNTS HAIR-OR THORN-lIke, THe lATTeR bASeD ON DISTINcT PROTUbeRANceS. ROSTRUM WITH THRee PAIRS OF rs 1-3; HeAD cAPSUle beARINg 1 vs, 2 sos 1-2, 2 os 1-2 AND 2 pas 1-2. TWO PAIRS OF mts 1-2 POORlY ObSeRVeD ( FIgS 27A, 29A ). PRONOTUM WITH 2 as 1-2, 2 ds 1-2, ls, 2 sls 1-2 AND 2 pls 1-2 ( FIgS 28A, 29A ). All SeTAe OF PROTHORAX MODeRATelY elONgATe, PlAceD ON PROTUbeRANceS. Ls AND pls 2 A lITTle SMAlleR THAN THe ReMAININg SeTAe. CHAeTOTAXY OF MeSOTHORAX cONSISTINg OF 4 PAIRS OF SHORT d 1-4 (DORSAl S.), PlAceD MeDIAllY ( FIg. 28A ). MeTATHORAX WITH 4 PAIRS OF SHORT SeTAe, FORMINg A RegUlAR TRANSVeRSe ROW AlONg THe POSTeRIOR MARgIN. TeRgAl PARTS OF AbD. I–VI eAcH WITH 7 PAIRS OF SMAll PROTUbeRANceS WITH SHORT, THORN-lIke SeTAe. SeTAe NO. 1–6 DISTINcT, FORMINg A RegUlAR TRANSVeRSe ROW AlONg THe POSTeRIOR MARgIN, SeTA NO. 7 SMAll PlAceD lATeRAllY, SO AT FIRST VIeW cHAeTOTAXY OF eAcH SegMeNT SeeMS TO cONSISTS OF 6 PAIRS OF SeTAe ONlY. AbD. VII WITH 7 PAIRS OF SeTAe eQUAl IN SIZe, OF WHIcH 5 PAIRS ARe PlAceD POSTeROMeDIAllY AND NeXT TWO PAIRS lATeRAllY. AbD. VIII WITH 4 PAIRS OF SeTAe PlAceD AlONg THe POSTeRIOR MARgIN AND ONe PAIR MeDIAllY ( FIgS 28A, 29A ). EAcH AbD. I–VIII WITH 2 SHORT l 1-2 (lATeRAl S.) PlAceD clOSe TO THe bORDeR OF TeRgUM ( FIg. 29A ). STeRNAl PARTS OF eAcH AbD. VI–VIII WITH 3 PAIRS OF v 1-3 (VeNTRAl S.), lOcATeD POSTeRIORlY ( FIgS 27A, 29A ). AbD. IX WITH 2 SHORT SeTAe PlAceD VeNTRAllY, clOSe TO UROgOMPHI, AND NeXT 2 lOcATeD DORSAllY ( FIgS 27A, 29A ). EAcH UROgOMPHUS beARS A PAIR OF SHORT SeTAe.

Figures

FIGURES 27 – 29 (a). Andrion regensteinense, pupa, habitus and chaetotaxy. 27 a—total (ventral view), 28 a—total (dorsal view), 29 a—total (lateral view) (ur—urogomphi, setae: as— apical, d— dorsal, ds— discal, fes— femoral, ls, l — lateral, mts — mandibular theca, os— orbital, pas— postantennal, pls— posterolateral, rs — rostral, sos— superorbital, sls— superlateral, vventral, vs— vertical).