Scolomus clypeatus Araujo & Santos

Araujo, Rodrigo O., Vivallo, Felipe & Santos, Bernardo F., 2018, Discovery of two new Andean species of Scolomus (Townes & Townes), with a key to all known species (Hymenoptera: Ichneumonidae: Metopiinae), Zootaxa 4429 (1), pp. 189-194: 191-192

publication ID

https://doi.org/10.11646/zootaxa.4429.1.12

publication LSID

lsid:zoobank.org:pub:F4602A7C-7361-4E3E-AED9-F0B2D82CB9EB

persistent identifier

http://treatment.plazi.org/id/325B466B-FFA3-FFFF-FF0E-FE21FC5106E3

treatment provided by

Plazi

scientific name

Scolomus clypeatus Araujo & Santos
status

sp. nov.

Scolomus clypeatus Araujo & Santos  sp. nov.

( Figs 1, 2 View Figure )

Diagnosis: Body covered with silvery pubescence; female supra-clypeal area with clusters of setae, seemingly bifurcate due to their aggregate nature. Clypeus approximately rectangular, wider than in other species, width 3.00× its height, and with distinct elongate bristles (longer than the other bristles of the body). Head yellow with antenna and region between ocelli dark brown. Mesosoma dark brown, except pronotum, mesoscutum, tegula, axilla, scutellum, postscutellum and metanotum, yellowish. Female with hypopygium large and triangular in lateral view. Fore wing with large rhomboid areolet.

Description. Holotype female ( Figs 1, 2 View Figure ). Approximate body length: 6.37 mm. Fore wing length: 5.44 mm; antenna length: 5.80 mm; number of flagellomeres: 30; head 1.20× as wide as high (front view); distance between eye and lateral ocellus 1.50× as long as diameter of lateral ocellus; frons smooth, female supra-clypeal area with clusters of setae, seemingly bifurcate due to their aggregate nature; clypeus 3.00× as wide as high; mandible 6.35× as long as basal width (front view); malar space 1.60× as long as mandible basal width; number of palpomeres: 5:4; pronotum polished; mesopleuron punctate on upper, anterior, and lower margins; areolet rhombic, 0.80× as wide as long; hind wing with five hamuli; vein CU/1b absent; hind femur 5.10× as long as wide; hind tibia 7.30× as long as wide; hind basitarsus 5.90× as long as wide; mesosoma generally smooth, polished and finely punctate; propodeum smooth, with isolated punctures, costula and anterior transverse carina present; median longitudinal carina of propodeum present and incomplete; lateral longitudinal and posterior transverse carinae complete; anterior transverse and median longitudinal carinae incomplete; area basalis, petiolaris and posteroexterna discernible; T1 smooth, with isolated punctures; dorsolateral carina of T1 absent; post-petiole 2.20× as long as maximum width; glymma deep, seemingly with thin membrane between both sides; T2 3.30× as long as its height (lateral view); tergites III–VII similarly sculptured; hypopygium large and triangular in lateral view, 1.55× as long as wide; ovipositor short and needle-shaped, 12.50× as long as basal width.

Head yellow with antenna and interocellar area dark brown. Mesosoma dark brown, except pronotum, mesoscutum, tegula, axilla, scutellum, postscutellum and metanotum, yellowish. Wing hyaline; pterostigma brown. Metasoma with T1-T4 green, T5 onwards dark brown. All coxae, trochanters, femora and tibiae yellowish green, tarsi brown. Body covered by silvery pubescence.

Type material: Holotype female: Chile, Cautín , Conquillo National Park. 16-18-I-2015. B. Santos col. ( AMNHAbout AMNH). 

Type locality: CHILE: Región de la Araucanía: Cautín ( Conquillo National Park ). 

Distribution: CHILE: Región de la Araucanía: Cautín (Conquillo National Park).

Etymology: The specific epithet of this species make reference to its clypeus, wider than the other species of the genus.

Comments: Scolomus clypeatus  sp. nov. is most similar to S. maculatus  sp. nov. because of the clusters of seemingly bifurcate setae in the supra-clypeal area of females; both also have the body predominantly green, present as well in the other Chilean species, S. magellanicus  . The two species can be differentiated by (1) the width of the clypeus: S. clypeatus  sp. nov. has a larger clypeus, with rectangular aspect ( Fig. 1 View Figure ), 3.00× as wide as long, (vs. 2.30× in S. maculatus  ); (2) distance between eye and lateral ocellus>1.50× the diameter of lateral ocellus in S. clypeatus  sp. nov. (vs. up to 1.00× in S. maculatus  .); (3) S. clypeatus  sp. nov. has a smaller areolet, 0.80× as wide as long (vs. 1.00× in S. maculatus  sp. nov.); (4) in lateral view, hypopygium 1.55× as long as wide in S. clypeatus  sp. nov. (vs. 1.90× in S. maculatus  sp. nov.); (5) ovipositor>10.00× as long as basal width in S. clypeatus  sp. nov. (vs. 5.30× in S. maculatus  sp. nov.); (6) color: S. clypeatus  sp. nov. has the head, mesoscutum, postscutellum and pronotum entirely yellow (vs. head and pronotum green, mesoscutum yellow with dark brown spots on its lateral lobes and around the scutellum in S. maculatus  ). Both new species have a lightly petiolate areolet, rhombic, with vein 2RS joining rs-m shortly before touching 3RSa, while S. magellanicus  has a pentagonal areolet, with vein 2RS and rs-m touch 3RSa independently. The male of this species is unknown.

AMNH

American Museum of Natural History