Austroterobia heydoni,

Mitroiu, Mircea-Dan, 2017, Revision of world Austroterobiinae and Parasaphodinae (Hymenoptera: Chalcidoidea: Pteromalidae), parasitoids of giant scales (Hemiptera: Coccoidea: Monophlebidae), Zootaxa 4301 (1), pp. 1-63: 14-16

publication ID

https://doi.org/10.11646/zootaxa.4301.1.1

publication LSID

lsid:zoobank.org:pub:67A78566-A4FD-4E37-96E9-DCC4CCF321E5

persistent identifier

http://treatment.plazi.org/id/4D3D879A-FFAB-FFA0-FF16-C57AFB2FF886

treatment provided by

Plazi

scientific name

Austroterobia heydoni
status

sp. nov.

Austroterobia heydoni  sp. nov.

( Figs 21–28)

Diagnosis. Female (male unknown): head and mesosoma with conspicuous metallic reflections ( Fig. 21); gena conspicuously depressed at mouth corner ( Fig. 26View FIGURES 22 – 28); toruli closer to ventral margin of clypeus than to median ocellus ( Fig. 22View FIGURES 22 – 28); basal two teeth of right mandible very short and close to each other ( Fig. 25View FIGURES 22 – 28); notauli visible only in anterior third of mesoscutum ( Fig. 23View FIGURES 22 – 28); marginal vein about 4× as long as broad ( Fig. 28View FIGURES 22 – 28).

Austroterobia heydoni  is easily recognizable by its very short marginal vein ( Fig. 28View FIGURES 22 – 28), which is unique among the presently known species of Austroterobia  .

Material examined. Type material. Holotype ♀ (deposited in UCD) [entire; on triangular card]. D. R. CONGO: ‘Dem. Rep. Congo, Bandundu: Wamba , Kikongo Mission, 4°15’S 17°10’E’, ’ 20.IV.2006, S. L. Heydon, S. E. Stevenson, forest Malaise’.GoogleMaps 

Description. Female. Body length: 1.2 mm.

Colour. Head and dorsal side of mesosoma brownish-black, with conspicuous greenish metallic reflections ( Fig. 21); lateral side of mesosoma brown ( Fig. 27View FIGURES 22 – 28). Gaster brown ( Fig. 21). Eyes and ocelli pale reddish-grey ( Figs 22, 23, 26View FIGURES 22 – 28). Antenna ( Figs 21, 24View FIGURES 22 – 28) with scape yellowish; pedicel light brown dorsally, paler ventrally; flagellum light brown. Mandibles yellowish, teeth reddish-brown ( Fig. 25View FIGURES 22 – 28). Fore and mid legs entirely yellowish; hind legs with femora yellowish-brown ( Fig. 21). Wings hyaline, tegula and venation brown ( Fig. 28View FIGURES 22 – 28). Body setation whitish, wing setation brown ( Fig. 22, 23, 28View FIGURES 22 – 28).

Sculpture. Head and most of dorsal side of mesosoma coriaceous to alutaceous except for smooth lower part of clypeus ( Figs 22, 26View FIGURES 22 – 28); malar depression with sculpture denser ( Fig. 26View FIGURES 22 – 28); prepectus smooth ( Fig. 27View FIGURES 22 – 28); mesopleuron mostly smooth except for finely reticulate lower mesepisternum and shallow femoral depression, with indication of a central pit ( Fig. 27View FIGURES 22 – 28); metapleuron extremely finely alutaceous ( Fig. 27View FIGURES 22 – 28); gaster smooth.

Structure. Head. Toruli closer to ventral margin of clypeus than to median ocellus ( Fig. 22View FIGURES 22 – 28). Scape not reaching median ocellus ( Fig. 21). Gena conspicuously depressed at mouth corner ( Fig. 26View FIGURES 22 – 28), posterior margin finely carinate. Malar sulcus absent ( Fig. 26View FIGURES 22 – 28). Eyes broad oval, inner margins not sinuate in middle and almost parallel in lower part ( Fig. 22View FIGURES 22 – 28). Funicular segments not pedicellate ( Fig. 24View FIGURES 22 – 28). Head width about 2.2× length (42:19) in dorsal view and 1.2× height (42:35) in frontal view. POL about 1.1× OOL (9:8). Eye height about 1.3× length (19:15), about 2.1× malar space (19:9), and about 1.3× scape length (19:15). Head width 1.2× length of pedicel plus flagellum (42:35). F1 width about 1.1× length (4.0:3.5); F5 width 1.5× length (4.5:3.0); clava length 2.2× width (11:5).

Mesosoma. Dorsally setose except for metanotum and median area of propodeum ( Fig. 23View FIGURES 22 – 28); prepectus and metapleuron bare ( Fig. 27View FIGURES 22 – 28); mesopleuron bare except for some setae on lower mesepisternum ( Fig. 27View FIGURES 22 – 28). Pronotum barely visible in dorsal view. Notauli deep only in anterior third of mesoscutum ( Fig. 23View FIGURES 22 – 28). Axillae wide apart, medially connected by slightly widened groove separating mesoscutum from mesoscutellum ( Fig. 23View FIGURES 22 – 28). Posterior margin of mesoscutellum evenly curved. Fore wing ( Fig. 28View FIGURES 22 – 28) with small speculum, otherwise completely setose; parastigma without hyaline break; marginal vein distinctly thickened. Mesosoma length about 1.1× width (40:35), width 1.4× height (35:25). Mesoscutum width about 2.3× length (35:15). Mesoscutellum length about 0.9× width (13:15). Fore wing length about twice width (85:43); MV length about 4× width (12:3); MV 0.85× SV (12:14); PV about 1.8× MV (22:12).

Gaster. Ovate, about equal to head plus mesosoma ( Fig. 21); length about 1.6× width (55: 35).

Male. Unknown.

Distribution. Democratic Republic of Congo.

Biology. Unknown.

Remarks. Unfortunately, the propodeum of the holotype is mostly concealed by glue ( Fig. 21), so nothing can be observed about its structure, except that its central area is apparently not setose. However, based on the observed structure of the propodeum in all of the other species of Austroterobia  it is highly probable that it has a complete median carina and well developed plicae. A remarkable character of A. heydoni  is the structure of the right mandible, where the two inner teeth are small and very close to each other, appearing as one double tooth ( Fig. 25View FIGURES 22 – 28). The structure of the left mandible is characteristic for Austroterobia  , while the right mandible structure together with the unusually short marginal vein may indicate a close relationship with Teasienna  . However, the species does not have the other characters of Teasienna  , so it is described in Austroterobia  . Austroterobia heydoni  is the only Afrotropical species of Austroterobia  with incomplete notauli.

Etymology. Named in honour of Dr. Steve Heydon ( UCD), the collector of the holotype, for his contribution to the systematics of Chalcidoidea  .

UCD

University of California, Davis