Difference between revisions of "Zambion broadi"

Latest revision as of 10:14, 23 December 2011

Taxonavigation

Ordo: Hymenoptera
Familia: Ichneumonidae
Genus: Zambion

Name

Zambion broadi Bennett & Barnes, 2011 sp. n. – Wikispecies link – ZooBank link – Pensoft Profile

Diagnosis

Zambion broadi can be distinguished from all other Zambion spp. by combination of all of the following characters: 1) mesopleuron completely black (without yellow) (Fig. 9); 2) supra-antennal horn long and sub-parallel-sided in dorsal view (Fig. 21), 1.2 times as long as pedicel at midheight in lateral view; 3) propodeum orange (not black) (Fig. 9).

Description

Adult. Male. Fore wing length 6.4 mm. Clypeus separated from supraclypeal area by a strong groove. Malar space 0.4 times basal width of mandible. Supraclypeal area 1.9 times as wide as high (Fig. 15), dorsomedially without a short, narrow, longitudinal lamella between the antenna. Supra-antennal horn long and sub-parallel-sided in dorsal view (Fig. 21), 1.2 times as long as width of pedicel at midheight in lateral view. Ocello-ocular distance 2.1 times ocellar diameter. Gena 0.6 times transverse diameter of the eye. Flagellum with 30 segments.
Notaulus present, but weak (Fig. 29). Epicnemial carina medially curving away from anterior edge of mesopleuron near ventral corner of pronotum (similar to Zambion wahli shown in Fig. 33). Scutellum with lateral carinae at base only. Medial longitudinal carinae of propodeum absent anterior to posterior transverse carina. Posterior transverse carina incomplete medially. Carina extending from pleural carina to propodeal spiracle absent. Posterior transverse carina of propodeum with lateral abscissa strongly curving posteriorly where it joins pleural carina, point of union at about 0.2 distance from posterior end of pleural carina to propodeal spiracle (Fig. 37). Ventral transverse carina extending from metasomal foramen to pleural carina present (Fig. 37). Fore tibia apical point not examined (both fore tibiae absent). Hind femur 3.6 times as long as medial width. Hind tarsal claw pectinate to 0.4 times length of claw. Angulation of fore wing vein 2m-cu strong.
Tergite 1 of metasoma 1.2 times as long as apical width. Dorsal longitudinal carinae of T1 extending to about level of spiracle (0.4 length of tergite), dorsolateral longitudinal carinae present only as a short stub bifurcating near base of dorsal longitudinal carina.
Black. Apical half of clypeus, glossa, apex of scutellum, propodeum, metasoma, except as noted below, orange. Tegula, coxae, apical 0.2 of hind tibia, hind tarsus except basal 0.3 of basal tarsomere, T2+ in spots laterally and sublaterally, T5 to T6 medially and hypopygium brown. Palpi, hind trochanter, femur, basal 0.8 of hind tibia and basal 0.3 of basal tarsomere, sternites and gonoforceps brownish yellow. Note that the distinction between orange and brownish yellow is not always clear. The hind leg is slightly more yellowish than the propodeum, the latter being slightly more yellow (and slightly less orange) than the scutellum and tergites. Membrane of fore wing uniformly, moderately infumate (Fig. 9). Body covered with dense golden setae.
Female: unknown.

Material examined

Holotype: ♂, Label 1: BRIT. E. AFRICA [KENYA], 30 miles from Magadi Junc., April.1912, F.G. Hamilton. Label 2: 1915-98. [NHM]. Condition: right flagellum with only basal 15 flagellomeres, left flagellum with basal 5 flagellomeres attached, fore and middle legs missing except for coxae, left flagellomeres 6 to 15 and right hind leg glued on card below specimen.

Etymology

This species is named in honour of Dr. Gavin Broad (NHM) in recognition of his contributions to ichneumonid taxonomy and for finding the type specimen of this species within the unidentified ichneumonids of the Natural History Museum, London.

Comments

Zambion broadi is most closely related to Zambion wahli as noted under the comments for that species. The differences are the colour of the propodeum (compare Figs 8 and 9), the shape and location of the lateral abscissa of the posterior transverse carina of the propodeum, and the complete lack of the medial longitudinal carina dorsal to the posterior transverse carina of the propodeum in Zambion broadi (present, but incomplete in Zambion wahli). It is possible that Zambion broadi is conspecific with Zambion wahli, but we think this unlikely given the difference in both colour and propodeal carination. When both of these characters differ in related taxa, it is a good indicator that two species are present (e.g., in Dyspetes Förster) (He and Wan 1987^[1]).

Original Description

• Bennett, A; Barnes, D; 2011: Revision of the world species of Zambion (Hymenoptera, Ichneumonidae, Tryphoninae) ZooKeys, 159: 19-48. doi

Other References

1. ↑ He J, Wan X (1987) Descriptions of five new species of the genus Dyspetes (Hymenoptera: Ichneumonidae). Acta Zootaxonomica Sinica 12: 89-92. [in Chinese with English summary.]

Images

Figures 8–9. Habitus 8 Zambion wahli,holotype female 9 Zambion broadi,holotype male.  Figures 10–15. Head, anterior view 10 Zambion hirtum,paratype male 11 Zambion monodon, paratype male 12 Zambion rogeri,paratype male 13 Zambion eileenae,holotype female 14 Zambion wahli,paratype male 15 Zambion broadi, holotype male.  Figures 16–21. Vertex showing supra-antennal horn, dorsal view 16 Zambion hirtum, paratype male 17 Zambion monodon, paratype male 18 Zambion rogeri, paratype male 19 Zambion eileenae, holotypefemale 20 Zambion wahli, holotypefemale 21 Zambion broadi, holotype male.  Figures 28–33. 28–29 Head, pronotum and anterior of mesoscutum, dorsal view 28 Zambion wahli, holotype female (double arrow shows widening of pronotum) 29 Zambion broadi, holotype male (arrow shows weak notaulus) 30–31 Pronotum, lateral view 30 Zambion hirtum, paratype male 31 Zambion wahli, holotype female 32–33Mesopleuron, lateral view (arrow points to dorsal part of epicnemial carina) 32 Zambion rogeri, holotype male 33 Zambion wahli, holotype female.  Figures 34–39. 34 Propodeum, dorsal view. Zambion hirtum, holotype female35–37 Propodeum, dorsolateral view (double-headed arrows indicate length of pleural carina anterior and posterior to point of union with posterior transverse carina) 35 Zambion hirtum, paratype male 36 Zambion monodon, holotype female (note lack of ventral transverse carina) 37 Zambion broadi, holotype male 38–39 Fore wing 38 Zambion hirtum, holotype female 39 Zambion hirtum,paratype male. llc – lateral longitudinal carina, mlc – medial longitudinal carina, pc – pleural carina, ptc – posterior transverse carina, ps – propodeal spiracle, vtc – ventral transverse carina.  Figures 40–45. 40–41 First metasomal segment, lateral view (hollow arrow marks posterior end of dorsal longitudinal carina, solid arrow denotes posterior end of dorsolateral longitudinal carina) 40 Zambion hirtum, paratype male 41 Zambion monodon, paratype male 42 Anterior of metasoma, lateral view, Zambion monodon, paratype male (arrow points to laterotergite of second metasomal segment) 43 Tergites 2 and 3, dorsal view, Zambion hirtum, holotype female 44 Posterior of metasoma, lateral view showing ovipositor, Zambion hirtum, holotype female 45 Egg, lateral view, Zambion monodon, holotype female.