Dicamptus maxipol
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Ordo: Hymenoptera
Familia: Ichneumonidae
Genus: Dicamptus
Name
Dicamptus maxipol Rousse & van Noort sp. n. – Wikispecies link – ZooBank link – Pensoft Profile
Type material
(verbatim label data). HOLOTYPE ♀: SOUTH AFRICA, W. Cape, West Coast Fossil Park, (5.5 km 270° W Langebaanweg) 32°57.759'S, 18°05.519'E, 9–16 Oct 2002, S. van Noort, Malaise trap LW02-R4-M96, Rehabilitated slimes dam, SAM-HYM-P049469 (SAMC).
Diagnosis
Orange with inter-ocellar area, most of mesosoma and apex of metasoma black; mandible not twisted, with a central tuft of hairs; clypeus wide, long and flat in profile; antenna short and stout with 56 flagellomeres; mesosoma laterally coarsely punctate to rugose-punctate, dorsally densely and more finely punctate; mesoscutum with notaulus distinct and relatively long; mesopleuron with epicnemial carina not distinct above lower corner of pronotum; propodeum anteriorly densely punctate, posteriorly coarsely rugose-reticulate; disco-submarginal cell with fenestra developed but without distinct sclerite; fore tibia with dense and long spines on outer surface; fore tibial spur with a vestigial basal membrane.
Differential diagnosis
Differentiated from all other Dicamptus species in the world by the absence of distinct sclerites in the disco-submarginal cell; in the Afrotropical region, it seems related to Dicamptus neavei Gauld & Mitchell, 1978, which shares the dense spines on the tibia, the exceptionally reduced ocelli and a somewhat similar colour pattern; Dicamptus neavi is, however, a tropical species with shorter antennae, a stouter metasoma, and distinctly different alar indices with a distinct proximal sclerite in the disco-submarginal cell. In Gauld and Mitchell’s key (1978[1]), Dicamptus maxipol is included in the following modified first couplet:
Description
FEMALE (holotype). B 20.8; F 11.5; ML 1.2; CT 1.2; OOL 2.0; POL 1.2; FI 20%; F1–2 1.7; F20 1.2; AI 1.1; CI 0.5; ICI 0.7; SDI 1.1; NI 2.0.
Color. Orange interspersed with black; black: inter-ocellar area, entire mesosoma except for mesonotum and metanotum, base of tergite 1, tergite 5 and following, all coxae and trochanters except trochantelli; antenna orange, slightly darkening toward apex; wings hyaline, venation dark reddish to black except for pterostigma anteriorly light reddish.
Head. Mandible short and stout, without longitudinal groove, with a central tuft of long hairs, upper tooth barely longer than lower tooth; malar line long; clypeus long and wide, coarsely and densely punctate, rather flat in profile, somewhat swollen medially and ventrally, ventral margin strongly impressed; face strongly transverse, densely and coarsely punctate; frons rather smooth, upper head densely punctate; gena moderately swollen behind eyes; occipital carina complete and strong; antenna short and stout with 56 flagellomeres.
Mesosoma. Pronotum, mesopleuron and metapleuron coarsely and densely punctate, fading to rugose-punctate ventrally; anterior margin of pronotum simple; epicnemial carina short, indistinct above lower corner of pronotum; posterior transverse carina of mesosternum complete though ventrally weak; submetapleural carina not expanded anteriorly; mesoscutum densely and more finely punctate; notaulus long, moderate, distinct to anterior third of mesoscutum; scutellum densely punctate, carinate almost to apex; propodeum with anterior area densely punctate, anterior transverse carina complete, posterior area coarsely rugose-reticulate, abruptly declivous in profile and mid-posteriorly concave. Wings. Disco-submarginal cell with fenestra developed, without any distinct sclerite except a weak quadra centrally; Rs+2r hardly sinuate, slightly bent and thickened near pterostigma; Rs&M distal to cu-a by about its own width; hind wing with 7 hamuli. Legs. Fore tibia with dense and long spines on outer surface; fore tibial spur with a vestigial membrane basally to macrotrichial comb, membrane barely less than 0.1× length of spur; hind coxa in profile 1.8× as long as high; hind trochantellus mid-dorsally 0.2× as long as wide; hind tarsal claws symmetrical with 8 pectinae.
Metasoma. Slender; tergite 2 in profile 2.7× longer than high; thyridium large, oval, separated from anterior margin of tergite 2 by 1.3× its own length; ovipositor not reaching beyond metasomal apex.
MALE. Unknown.
Etymology
Named after the unusually reduced ocelli, and as a result the large POL. Noun in apposition.
Distribution
South Africa (Western Cape).
Original Description
- Rousse, P; Noort, S; 2014: Afrotropical Ophioninae (Hymenoptera, Ichneumonidae): an update of Gauld and Mitchell’s revision, including two new species and an interactive matrix identification key ZooKeys, (456): 59-73. doi
Images
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Other References
- ↑ Gauld I, Mitchell P (1978) The taxonomy, distribution and host preferences of African parasitic wasps of the subfamily Ophioninae (Hymenoptera, Ichneumonidae). Commonwealth Institute of Entomology, Slough, England. Waspweb.
