Dendrocerus carpenteri (Curtis, 1829)

Wang, Xu, Chen, Huayan, Miko, Istvan, Huang, Yixin & Zhu, Chaodong, 2021, Notes on the genus Dendrocerus Ratzeburg (Hymenoptera, Megaspilidae) from China, with description of two new species, Journal of Hymenoptera Research 86, pp. 123-143 : 123

Dendrocerus carpenteri (Curtis, 1829)

Figs 1 , 2

Ceraphron carpenteri Curtis, 1829: 249.

Cerapilron crispus Curtis, 1829: 249. Nomen nudum.

Ceraphron elegalls Curtis, 1829: 249. Nomen nudum.

Megaspilus carpenteri (Curtis) Stephens, 1829: 401.

Calliceras carpellteri (Curtis) Westwood, 1840: 77.

Ceraphroll hyalinatus Thomson, 1858: 291.

Lygocerus carpenteri (Curtis) Marshall, 1868: 158.

Coryne carpenteri (Curtis) Buckton, 1876: pl. 7.

Megaspillts niger Howard, 1890: 247.

Trichosteresis proxima Kieffer, 1907: 32.

Trichosteresis punctatipennis Kieffer, 1907: 33.

Lygocerus rlijiventrls Kieffer, 1907: 45.

Lygocerlls campestris Kieffer, 1907: 48.

Lygocerus aphidivorus Kieffer. 1907: 49.

Lygocerlls aphidivorus var. inconspicuus Kieffer, 1907: 50.

Lygocerus testaceimanus Kieffer, 1907: 51.

Lygocerus aphidum Kieffer, 1907: 52.

Lygocerus giraudi Kieffer, 1907: 52.

Lygocerus cameroni Kieffer, 1907: 56.

Lygocerus thomsoni Kieffer, 1907: 57.

Lygocerus inquilinus Kieffer, 1917: 349.

Trichosteresis carpenteri (Curtis) Morley, 1929: 55.

Lygocerus ambianus Dessart, 1965: 158.

Delldrocerus britannicus Dessart, 1966: 12.

Delldrocerus tischbeini Dessart, 1966: 12.

Delldrocerus carpenteri (Curtis) Dessart, 1970: 142.

Material examined.

China • 1 male, 2 females; Jiangsu, Suzhou ; 20.IV.2019; H. Li leg.; (AHNU) • 4 females; Shandong, Yucheng ; 17.V.2019; R. Zhang leg.; (IZCAS) • 3 females; Anhui, Chuzhou, Mingguang ; 28.IV.2019; H. Li leg. (SYSBM) .

Redescription.

Male. Body length: 1.8 mm.

Coloration (Fig. 1 ): Cranium, mesosoma and metasoma black. Eyes, mouthparts light brown; ocelli brownish yellow. Antennae black. Legs chocolate brown with brownish-yellow joints. Syntergum dark brown to black (Fig. 1G ); gaster black or brown, mostly smooth. Pterostigma, costal vein, and radial vein brown (Fig. 1F ). Body pubescence white; marginal fringes of wings brown.

Head (Fig. 1C ): Slightly wider than mesosoma (about 1.1 × wider than mesosoma). HH: EHf = 1.8-1.9. HH: HL = 1.2-1.3. HW: IOS = 1.7-1.8. HW: HH = 1.1-1.2. CSB: Mean: 550-630 μm. POL longer than OOL and ocellar triangle with broad base. OOL: LOL = 1.4-1.6. POL: OOL = 1.4-1.5. Covered with short pubescence except glabrous clypeus and adjacent areas; head concolorous below and above eye midlevel; mandibles and palps brown. Facial pit present. Intertorular carina absent. Preoccipital lunula present, more distinct and transverse in males than in females. Hyperoccipital carina present medially, not extending to eyes laterally. Preoccipital furrow present.

Antennae (Fig. 1C ): Scape about 1.1 × longer than combined length of pedicel and F1. Scape length vs. pedicel length: 3.5-4.9. Scape length vs. F1 length: 1.6-3.8. F1 length vs. pedicel length: 1.3-2.2. F1 length vs. F2 length: 1.1-1.4. Longest flagellomere: F1. Basal flagellar segments ventrally slightly concave; strongly serrate, gradually becoming less serrate distally. Flagellar pubescence long, at least as long as breadth of antennomeres.

Mesosoma (Fig. 1B, D ): Pronotum not elongate. AscW/PscW = 0.7-0.8. Mesosoma slightly narrow (1.4 × longer than wide) (Length/width/height = 770/550/550 μm); coriaceous in sculpture, densely pubescent. Mesoscutum: (Length/width = 380/490 μm); mesoscutum 1.3 × wider than long, with more or less straight anterior margin. Transverse pronotal sulcus and posterior pronotal sulcus present, distinct. Mesonotum wider than long, almost quadrate. Notauli complete, strongly angled and convergent posteriorly. Mesos scutellum broad and convex. Lateral axillar area distinctly higher than long. Mesopleural sulcus present. Propodeum medially short. Posterior propodeal carina present, more distinct laterally. Posterodorsal metapleural area trapezoid-shaped.

Wings (Fig. 1F ): Total wing length 1.3 mm. Hyaline, pterostigma (Length/width = 170/90 μm) nearly semicircular but distal edge almost straight. Radius (190 μm), strongly curved, often continuing distally without pigmentation.

Metasoma (Fig. 1G ): Metasoma concolorous with mesosoma. Metasoma 1.5 × longer than wide (Length/width/height = 800/540/406 μm). Syntergum with crenulate collar, clearly with neck. Rest of metasoma smooth, but with dense punctures in middle and posterior of syntergum. Several strong transverse gastral carinae present in basal portion of metasoma; gastrocoeli not evident; posterior tergites with setae.

Male Genitalia (Fig. 2 ): Genitalia with short cupula. Harpe median margin smooth and without tooth. Distal margin of harpe in lateral view blunt. Gonostipes longer than wide, fused dorsally; apical margin (part of gonostipes) with three teeth outward (Fig. 2A ). Median notch of distodorsal margin of gonostipes square.

Female (Fig. 3 ): Body length: 1.8-2.1 mm. As for male except scape longer (scape about 1.3 × longer than combined length of pedicel and F1). Pedicel and F1 approximately equal in length. Rest of flagellar segments short (L/B about 1.1-1.6), except F9 which is usually twice as long as broad. Flagellomeres flattened ventrally. Antenna black but distal end of pedicel sometimes lighter; weakly papillate, with short dense pubescence.

Distribution.

China (Shandong, Shanghai, Anhui, Zhejiang, Jiangsu, Hubei, Jiangxi, Fujian, Taiwan, Guizhou, Yunnan); Australasian, Oceanian, Neotropical, Oriental, and Palearctic.

Figures

Figure 1. Dendrocerus carpenteri (Curtis, 1829), male A dorsal habitus B head and mesosoma, dorsal view C lateral habitus D head and mesosoma, lateral view E head, anterior view F wings G metasoma, dorsal view.

Figure 2. Dendrocerus carpenteri (Curtis, 1829), male, genitalia A dorsal view B ventral view.

Figure 3. Dendrocerus carpenteri (Curtis, 1829), female A dorsal habitus B head and mesosoma, dorsal view C lateral habitus D head and mesosoma, lateral view E head, anterior view F wings G netasoma, dorsal view.