Chartocerus corvinus Girault, 1913

Molin, Ana Dal & Woolley, James B., 2020, Notes on types of Australian Chartocerus Motschulsky (Hymenoptera: Signiphoridae), Journal of Natural History 54 (9), pp. 681-702 : 689

Chartocerus corvinus Girault, 1913

urn:lsid:zoobank.org:act:F8E2494C-599C-4BC9-BCF1-08255B0A2082

EOL taxon ID: 847843

( Figure 5 ; DOI:10.5281/zenodo.3893699)

Girault (1913a, p. 225), as Signiphora corvina (original description).

Dahms (1983, p. 198; 1984, p. 698, 701; 1986, p. 409, 568): notes on type material.

Type material. Holotype female, QM Hy 772 , same slide as type of Gonatocerus huxleyi Girault and other specimens identified as Signiphora australiensis , Abbella subflava , Ufens piceipes and Aphelinoidea howardii , ‘from a window in a granary and barn on a wheat farm at Roma, Queensland, 6 October 1911 ’. The accession number Hy 772 is not indicated on the slide; number 4407 is indicated on a red label. According to Dahms (1983), this female is in fact the holotype: ‘QM: Slide – 1 cracked, complete coverslip (partly missing over 1 specimen) containing the Holotype = (head separated) of Signiphora corvina and other specimens as per labels “ Gonatocerus huxleyi Girault , ♀ Type 1040. From windows of a granary, Roma, Q., 6 October 1911 AAG 3691, 3691” [...]’. An arrow was added by JBW to indicate the holotype. Dahms (1983) states that number T4407 was a duplicate QM accession number for this type and had been cancelled. T3691 refers to the Gonatocerus specimen.

Description. Female. Length about 1.2 mm. Body dark, femora and tibia slightly lighter, protibia especially light distally. Tarsi of all legs lighter than the rest of the legs. The basal infuscation of the fore wing extends in the anterior-basal portion of the wing to the stigmal vein. Head round in frontal view, genae reticulate, punctations lateral to antennal scrobes; interantennal area seems lighter than clypeus and genae. Eyes relatively small, about 1/3 height of head. Antennal scape about 5× as long as wide, pedicel and ring segments cannot be observed, club about 2.6× as long as wide. Mesoscutum transversally striate; scutellum, metanotum and basal part of medial propodeal sclerite striate to reticulate towards margins. Mesoscutum at least 2× length of scutellum. It is not possible to count the setae on the mesosomal terga. Fore wing very broad, at the broadest part about ½ length of wing. The wing vein reaches about half of the distance to the apex. Marginal fringe very short, not more than 1/8 of wing width, 2 setae on submarginal vein, M1 missing (M6 is broken in this type but the socket is visible). Hind wing also wide towards the apex, about 3.5× as long as wide, marginal fringe 1/5 of wing width, with discal seta. Mesobasitarsus less than ½ length of mesotibia; mesotibial spur slightly shorter than basitarsus and with 4 teeth. Mesofemur with 2 visible spines.

Figures

Figure 5. Chartocerus corvinus (Girault), holotype ♀, Queensland Museum Type Hy 772. (a) body and legs; (b) head; (c) legs; (d) fore and hind wings; (e) mesosoma; (f) metasoma.