ICHNEUMONID FINAL INSTAR LARVAE — SHORT 



397 



Larval Key to Subfamilies of Ichneumonidae (except Orthocentrinae) 



L Mandibles unsclerotizcd and, of the head sclerites, only the pleurostoma and 

 each lateral part of the epistoma are sclerotized: accessory longitudinal 



tracheal commissure not present Collyriinae 



Mandibles well sclerotized, or, if not, then labial sclerite present; accessory 

 longitudinal tracheal commissure present in thorax 2 



2. Labral sclerite present 3 



Labral sclerite absent ^ 5 



3. Spur of hypostoma meeting stipital sclerite on or near to its median end or, 



if not, then with each lateral part of labral sclerite broadened into roughly 

 quadrate area, or with mandible roughly triangular in shape with no clear 

 differentiation between base and blade and with two dorsal rows of large 



teeth Pimplinae other than Pimplini and Acaenitini 



Spur of hypostoma not meeting stipital sclerite close to its median end; each 

 lateral part of labral sclerite not broadened into quadrate area; mandible 

 with blade clearly differentiated from base 4 



4. Epistomal arch lightly sclerotized ^ Tryphoninae 



Epistomal arch not sclerotized * Cryptinae 



2 Except Opheltes, Profarchus (Mesoleiinae, Mesoleiini) . 



3 Except Idiogramma (Tryphoninae, Idiogrammatini). 

 « Except Oambrus (Cryptinae, Cryptini). 



Explanation of Symbols on Figure 1 



ama: Anterior mandibular articulation 



ant: Antenna 



ant sk: Antennal socket 



app: Anterior pleurostomal process 



at: Anterior tentorial pit 



atr: Atrium of spiracle 



ba: Base of mandible 



bl: Blade of mandible 



ca: Closing apparatus of spiracle 



cd: Cardo 



clp: Clypeus 



cs(decl): Coronal stem of dorsal 



ecdysial cleavage line 

 dfm: Cranial depression associated with 



origin of frontal muscles 

 epst: Epistoma 

 fm: Food meatus 

 fr: Frons 

 ge: Gena 



hyph: Hypopharynx 

 hsp: Sclerotic spur of hypostoma 

 hst: Hypostoma 

 lb: Labium 

 lbs: Labial sclerite 



Ic: Lacinia 



Im: Labrum 



1ms: Labral sclerite 



Iplp: Labial palp 



md: Mandible 



mplp: Maxillary palp 



mx: Maxilla 



oc: Occiput 



ol: Ocular line 



pa: Parietal region ol cranium 



plb: Postlabium 



plst: Pleurostoma 



pma: Posterior mandibular articulation 



poc: Postocciupt 



pos: Postoccipital sulcus 



ppp: Posterior pleurostomal process 



prlb: Prelabium 



pt: Posterior tentorial pit 



slo: Salivary orifice 



sp: Silk press 



ss(q): Stipital sclerite 



St: Stipes 



t: Teeth of mandible 



vx: Vertex 



