Sitona macularius (Marsham, 1802)

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 : 418

Sitona macularius (Marsham, 1802)

( FIgS 27–29F )

Body. LeNgTH: 4.2–5.2 MM, MAXIMUM WIDTH (AT THe leVel OF PROcOXAe): 2.2–2.7 MM, HeAD WIDTH (AT THe leVel OF eYeS): 0.9–1.1 MM, PROTHORAX WIDTH (AT WIDeST PlAce): 0.9–1.1 MM (♀, ♂). EYeS RelATIVelY bIg, eVeNlY cONVeX. BODY SleNDeR, WHITe. PRONOTUM TRAPeZIUM-SHAPeD, APPROXIMATelY 1.6 TIMeS AS WIDe AS lONg. MeTANOTUM SlIgHTlY lONgeR THAN MeSONOTUM. AbD. I–IV OF AlMOST eQUAl leNgTH, AbD. V–VI DIMINISHINg gRADUAllY, AbD. VII SeMIcIRcUlAR, AbD . VIII NARROW, AbD. IX DISTINcTlY SMAlleR THAN THe PReceDINg SegMeNTS. UROgOMPHI RelATIVelY lONg, WITH Well ScleROTIZeD APIcAl PART.

Chaetotaxy. SeTAe OF UNeQUAl leNgTH, All MORe OR leSS HAIR-lIke, YellOW, bASeD ON SMAll PROTUbeRANceS. ROSTRUM WITH ONe PAIR OF rs; HeAD cAPSUle beARINg 1 vs, 2 sos 1-2, 2 os 1-2 AND 2 pas 1-2 ( FIgS 27F, 29F ). PRONOTUM WITH 2 as 1-2, 2 ds 1-2, 2 sls 1-2 AND 2 pls 1-2 ( FIgS 28F, 29F ). All SeTAe OF PROTHORAX SHORT, eQUAl IN leNgTH, PlAceD ON VeRY SMAll PROTUbeRANceS. MeSO- AND MeTATHORAX eAcH WITH 3 PAIRS OF SHORT d 1-3, FORMINg A gROUP IN THe ceNTeR ( FIg. 28F ). TeRgAl PARTS OF AbD. I–VI eAcH WITH 6 PAIRS OF HAIR-lIke SeTAe. SeTAe 1–5 FORM A RegUlAR TRANSVeRSe ROW AlONg THe POSTeRIOR MARgIN; SeTA 6 PlAceD MORe lATeRAllY. SeTAe NO. 2 AND 4 VeRY SMAll, SOMeTIMeS AbSeNT; SeTAe NO. 1, 3 AND 5 DARk, bIggeR THAN SeTA NO. 6, SO AT FIRST VIeW cHAeTOTAXY OF eAcH SegMeNT SeeMS TO cONSIST OF 3 PAIRS OF SeTAe ONlY. CHAeTOTAXY OF AbD. VII cONSISTS OF 4 PAIRS OF SeTAe AlMOST eQUAl IN SIZe, OF WHIcH 2 PAIRS ARe PlAceD POSTeROMeDIAllY, NeXT TWO PAIRS lATeRAllY. AbD. VIII WITH TWO PAIRS OF SeTAe, eQUAl IN leNgTH AND PlAceD ceNTRAllY ( FIgS 28F, 29F ). 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).