Sitona hispidulus (Fabricius, 1776)

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 : 417

Sitona hispidulus (Fabricius, 1776)

( FIgS 27–29D )

Body. LeNgTH: 3.4–4.1 MM, MAXIMUM WIDTH (AT THe leVel OF PROcOXAe): 2.1–2.5 MM, HeAD WIDTH (AT THe leVel OF eYeS): 0.8–1.0 MM, PROTHORAX WIDTH ( AT WIDeST PlAce ): 1.0–1.2 MM (♀, ♂). EYeS FlAT . BODY RATHeR STOUT, WHITe OR YellOWISH. PRONOTUM ROUNDeD, APPROXIMATelY 1.4 TIMeS AS WIDe AS lONg. MeTANOTUM AlMOST TWIce AS lONg AS MeSONOTUM. AbD. I–VI OF AlMOST eQUAl leNgTH, AbD. VII SeMIcIRcUlAR, AbD . VIII NARROW, AbD. IX DISTINcTlY SMAlleR THAN THe PReceDINg SegMeNTS. UROgOMPHI VeRY SHORT AND WeAklY ScleROTIZeD.

Chaetotaxy. SeTAe OF UNeQUAl leNgTH, YellOW OR bROWN, ON HeAD AND THORAX HAIR-lIke, ON AbDOMeN NeARlY THORNlIke. ONlY SeVeRAl SeTAe ON THe HeAD ARe bASeD ON SMAll PROTUbeRANceS. ROSTRUM WITH ONe PAIR OF rs; HeAD cAPSUle beARINg 1 vs, 2 VeRY SHORT, AlMOST INVISIble sos 1-2, 2 os 1-2 AND 2 pas 1-2 ( FIgS 27D, 29D ). PRONOTUM WITH 2 as 1-2, 2 ds 1-2, 2 ls 1-2, 2 sls 1-2 AND 2 pls 1-2 ( FIgS 28D, 29D ). CHAeTOTAXY OF MeSOTHORAX cONSISTINg OF 3 PAIRS OF d 1-3 PlAceD MeDIAllY ( FIg. 28D ). CHAeTOTAXY OF MeTATHORAX SIMIlAR TO THAT OF THe ANTeRIOR SegMeNT(S). All SeTAe OF THORAX RATHeR elONgATe. TeRgAl PARTS OF AbD. I–VIII eAcH WITH 6 PAIRS OF SeTAe, FORMINg A RegUlAR TRANSVeRSe ROW AlONg THe POSTeRIOR MARgIN. SeTAe NO. 2 AND 6 DISTINcTlY SMAlleR THAN THe OTHeR SeTAe AND SOMeTIMeS AbSeNT, SO AT FIRST VIeW cHAeTOTAXY OF eAcH SegMeNT SeeMS TO cONSIST OF 4 PAIRS OF SeTAe ONlY. AbD. VIII WITH A SINgle PAIR OF SeTAe AlONg THe POSTeRIOR MARgIN. LATeRAl AND VeNTRAl SeTAe OF AbDOMeN INVISIble ( FIgS 27D, 29D ).

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).