Dentifemura maculata Sheng & Sun, 2010

Sheng, Mao-Ling & Sun, Shu-Ping, 2010, A new genus and species of Acaenitini (Hymenoptera, Ichneumonidae, Acaenitinae) from China, ZooKeys 49 (49), pp. 87-93 : 89-92

Dentifemura maculata Sheng & Sun , sp. n.

urn:lsid:zoobank.org:act:E6A590FE-B8F5-4DE3-AFE7-C96528EC196A

Figures 1–7

Etymology. The name of the new species is based on the body colour, which is yellowish brown with black flecks.

Type material. Holotype, female, CHINA: Quannan County, 530m, Jiangxi Province, 10 June 2008, leg. SHI-CHANG LI . Paratype: female, CHINA: Quannan County, 470m, Jiangxi Province, 12 May 2008, leg. SHI-CHANG LI.

Description. Female. Body length 10.2 to 11.5 mm. Fore wing length 9.6 to 10.5 mm. Ovipositor length 3.3 to 3.5 mm.

Head. Face 1.5 to 1.7 times as wide as long, with dense punctures (Figure 2), median portion convex, upper portion with a median longitudinal carina, reaching to middle ocellus. Clypeal foveae circular. Clypeal suture vestigial between clypeal foveae. Clypeus nearly flat, basal portion with punctures sparser than on face, apical portion smooth and impunctate, apical median portion narrowly concave, apical margin thin. Labrum crescentic, 0.42 to 0.45 as long as wide. Mandible with fine and dense longitudinal lines and unclear fine punctures, lower tooth slightly longer than upper tooth. Cheek with punctures sparser than on face. Malar space 1.18 to 1.23 times as long as basal width of mandible. Subocular sulcus distinct. Gena glossy, with distinct punctures, but gradually finer and more sparsely punctate towards upper portion, in lateral view approximately 0.7 times as long as width of eye, evenly convergent backward. Vertex (Figure 4) with punctures. Lateral margin of lateral ocellus concave. Interocellar area with fine and indistinct punctures. Postero-ocellar line approximately as long as Figures I–7. Dentifemura maculata Sheng & Sun , gen. and sp. n., ♀, holotype. I Body, lateral view 2 Face 3 Second to fifth segments of maxillary palpus (arrow indicates the third segment) 4 Vertex 5 Mesoscutum 6 Propodeum 7 Apical portion of ovipositor.

ocular-ocellar line. Frons deeply concave, but laterally more convex, with dense punctures except medially smooth. Antenna length 6.5 to 6.8 mm. Scape slightly wider apically, apical truncation about 40 degrees from transverse. Shortest length of pedicel approximately as long as widest diameter. Antenna with 22 to 23 flagellomeres, ratio of length of flagellomere 1:2:3:4:5 is 5.0:4.5:4.3:4.0:3.7. Occipital carina complete, medially evenly arched upward.

Mesosoma. Pronotum glossy, anterior portion with sparse punctures, apical margin slightly protruding and longitudinally ridge-shaped, laterally concave with distinct transverse wrinkles, upper posterior portion with distinct punctures, distance between punctures 0.2 to 0.5 times diameter of puncture. Without epomia. Mesoscutum with dense punctures (Figure 5), front portion of median lobe vertical, posterior portion with a short median longitudinal carina. Notaulus very strong, almost reaching to posterior margin of mesoscutum. Scutoscutellar groove with longitudinal wrinkles. Scutellum weakly convex, with sparse and fine punctures, distance between punctures 0.5 to 2.0 times diameter of puncture. Postscutellum smooth, evenly oblique posteriorly, anterior-lateral portion deeply concave. Upper portion of mesopleuron including speculum smooth; lower portion, anterior portion and subtegular ridge with dense and distinct punctures. Without mesopleural fovea. Prepectal carina strong, upper end reaching to mid-height of front margin of mesopleuron. Mesosternum with dense punctures, but comparatively finer than on mesopleuron. Metapleuron smooth, with sparse and fine punctures, distance between punctures 1.0 to 2.0 times diameter of puncture. Juxtacoxal carina absent. Submetapleural carina complete. Wing brownish hyaline. Fore wing vein 1 cu-a basad of 1- M, distance between them about 0.3 to 0.4 times length of 1 cu-a. Areolet absent. Vein 2 rs-m basad of 2 m-cu, distance between them approximately as long as or slightly longer than width of vein. Vein 2 -Cu approximately as long as 2 cu-a. Hind wing vein 1 -cu slightly shorter than cu-a. Legs stout. Ventral profile of hind femur with a strong blunt tooth on hind 0.25. Fourth segment of tarsus very short, in lateral view of hind tarsi, ratio of length of tarsomere 1:2:3:4:5 is 12.0:4.3:4.0:3.0:9.0. Inner sides of front and middle claws with an acute accessory tooth. Hind claws simple. Propodeum (Figure 6) with distinct punctures except apico-median portion polished, with distinct anterior transverse carina, lateral carina of area basalis and lateral longitudinal carina. Area basalis wider than long. Propodeal spiracle obliquely elliptical, approximately 1.6 times as long as maximum width.

Metasoma. First tergum 1.9 to 2.0 times as long as apical width, evenly and slightly narrowed toward base, with sparse and fine punctures. Median dorsal carina slightly long- er than sternite. Dorsolateral carinae indistinct. Ventrolateral carinae complete. Spiracle transversely elliptical, located slightly anterior of middle. Second and following terga with very sparse and fine punctures, gradually weaker and indistinct. Second tergum approximately 0.5 times as long as apical width. Fourth to sixth terga expanded. Posterior median portions of sixth and seventh terga weakly sclerotized. Apex of hypopygium reaching to or slightly projecting beyond tip of metasoma. Cercus almost reaching to tip of eighth tergum. Ovipositor sheath 1.1 to 1.2 times as long as hind tibia. Ovipositor slightly compressed, apical portion with 4 weak and unclear teeth.

Colour (Figure 1). Yellowish brown. Antenna dark brown, scape and dorsal profile of pedicel blackish brown. Dorsal and ventral profiles of front and middle femora and tibiae and tarsi more or less dark brown. Apical portions of front and middle femora, longitudinal line on dorsal profile of hind coxa and small fleck on ventral profile, basal portions of trochanters, basal portion of hind femur and two longitudinal lines on dorsal and ventral profiles brownish black. Hind tibia reddish brown, tarsus dark brown. Median portion of occipital carina, longitudinal flecks on median and lateral lobes of mesoscutum, scutoscutellar groove, basal margin of propodeum, oblique longitudinal fleck of first tergum and basal transverse bands of second and third terga black. Apical margin of third tergum, basal and apical median portion of fourth to sixth terga, and median transverse band of seventh tergum dark brown. Fore wing with stigma brown, veins brownish black.

Remarks. Dentifemura can be recognised by the following combination of characters. The clypeus lacks a transverse ridge or carina next to the apex. The lower tooth of the mandible is slightly longer than the upper tooth. The malar space is about 1.2 times as long as the basal width of the mandible. The third segment of the maxillary palp is gradually expanded apically, its apical truncation strongly oblique. Fore wing vein 2 rs-m is basad of 2 m-cu. In ventral profile, the hind femur has a strong, blunt tooth on the hind 0.25. The fourth tarsomere is very short. On the propodeum, only the anterior transverse carina, the lateral carina of the area basalis and the lateral longitudinal carina are distinct.

Biology. Unknown.