Baeoneurella, Dodd, 1913

Popovici, Ovidiu Alin, Masner, Lubomir & Polaszek, Andrew, 2019, A revision of the European species of Baeoneurella Dodd (Hymenoptera: Scelionidae), Journal of Natural History (J. Nat. Hist.) 52 (43 - 44), pp. 2745-2794 : 2752-2753

Synapomorphies for Baeoneurella

Maxillary palp

One palpal sclerite ( Figures 5c , 7d , 9d , 11d ). A maxillary palp with one palpal sclerite is rare in scelionids, being encountered only in a few genera ( Baeus and some Encyrtoscelio ), and from genera more closely related to Baeoneurella : in Phanuropsis Dodd and in some Trissolcus Ashmead ( Popovici et al. 2017).

Labial palp

Absent. Popovici et al. (2017) found a similar situation only in two scelionid genera – Psix Kozlov and Lê and Paratelenomus Dodd – but a recent study ( Taekul et al. 2014) found that these two genera are somewhat distant from Baeoneurella .

Preoccipital furrow ( Figures 5b,c , 7d,e , 9b–d , 11 b–d , 13a–c , 14a,b )

This structure is not documented in any other scelionid genera. In Baeoneurella it was previously observed by Fabritius and Andriescu (1985) and described as ‘ a ditch on the

median part of vertex ’ (p. 128). In Platygastroidea , a somewhat similar structure is found in Iphitrachelus Haliday ( Figure 3a ) and Acerotella Masner and named the ‘ occipital pit ’ ( Masner and Huggert 1989). We do not know the value of the occipital pit as a generic character in Iphitrachelus , but in Acerotella there are species with and without this structure ( Figure 3b ).

Ratio C + R/r-rs

In all Telenominae genera, except Baeoneurella , the vein C + R is shorter than r-rs. Only in Baeoneurella is C + R much longer than r-rs, but this is possibly a consequence of the process of the narrowing of the wings in this genus.

Three-merous clava

Clearly separates Baeoneurella from Telenomus where clava is at least 4-merous.

Characters including the lanceolate fore wings and absence of postmarginal vein have only specific value. There are species with apically rounded fore wings ( B. cumaea , B. blissae , B. cf. nigra ) and at least in B. cf. nigra the postmarginal vein is visibly developed and subequal to the stigmal vein.

Figures

Figure 3. Back of the head in (a) Iphitrachelus sp; (b) Acerotella sp.

Figure 5. Baeoneurela benefica (female, SEM): (a) head, frontoventral, emphasising the clypaeus, antennal rim and interantennal process; (b) head, dorsofrontal; (c) back of the head, emphasising the preoccipital furrow; (d) mandible; (e) mesosoma, dorsal; (f) mesosoma, lateral.

Figure 7. Baeoneurella phaeax (female,SEM):(a) head, ventral view; (b) head, frontal view; (c) head,lateral view; (d) head, posterodorsal view; (e) back of the head; (f) mesosoma, dorsal; (g) mesosoma, lateral.

Figure 9. Baeoneurella mirabilis (female, SEM): (a) head, frontoventral; (b) head, frontodorsal; (c) head, posterodorsal; (d) back of head; (e) mesosoma, dorsal; (f) mesosoma, lateral.

Figure 11. Baeoneurella maceki (female, SEM): (a) head, ventrolaterally; (b) head, frontal view; (c) head, dorsal; (d) back of the head; (e) mesosoma, dorsal; (f) mesosoma, lateral.

Figure 13. (a) Baeoneurella bicolor; (b) Baeoneurella blissae; (c) Baeoneurella cumaea (a–c: habitus; a1–c1: head and mesosoma, detail).

Figure 14. (a) Baeoneurella cf. nigra; (b) Baeoneurella platythoracis; (c) Telenomus OP1701 (a–c: habitus; a1–c1: head and mesosoma, detail).