Aphanogmus inamicus Evans and Dessart, 2005

Evans, Gregory A., Dessart, Paul & Glenn, Holly, 2005, Two new species of Aphanogmus (Hymenoptera: Ceraphronidae) of economic importance reared from Cybocephalus nipponicus (Coleoptera: Cybocephalidae), Zootaxa 1018 (1), pp. 47-54 : 51-54

Aphanogmus inamicus Evans and Dessart , n. sp.

Female ( Figs. 7–9, 11 ). Length: 1350 m

Diagnosis.

Aphanogmus inamicus is placed in the fumipennis group. It is most similar to Aphanogmus rufus Szelenyi , a Palearctic species which exhibits similar sexual dichromism where the female is reddish yellow and male is dark brown, and differs from the latter species by having the mesosoma more slender (1.54–1.72x as long as wide); the pedicel and first flagellar segment more slender; facial furrow and long propodeal spurs present; gastral fluting with characteristic lateral carinula; the flank with fine striae; and first gastral tergite distinctly longer than wide.

Description

Holotype female. ( Figs. 7–9, 11 )

Color: Body reddish­yellow with posterior margin of scutellum and central portion of posterior segments of gaster suffused; eyes, ocelli and carinae (longitudinal muscular traces along the mesoscutal furrow) darker red; fore wing clear at the base, with a large infuscate area from the marginal vein to the posterior margin of the wing; scape orangish, pedicel dark brown with pale apex, flagellum dark brown; legs yellow.

Body length. 1350 m. Head length/width/height: 175/280/265; eye­torulus: 80; eye: 260/200; preoccipital lunule limited anteriorly by a sharp carina, well­separated from the hind ocelli and fusing laterally into the orbits; preoccipital furrow complete; intraocellar pit absent; ocellar triangle small, posterior ocelli separated from the anterior ocellus by distance shorter than their greatest axis: POL/LOL/OOL: 80(35)/105(20)/35. DFIm 0.40­ 0.42x head width.

Antenna ( Fig. 11 ). F1 much shorter and narrower than pedicel, flagellum broadening apically with several transverse flagellomeres. Length/width measurements of antennal segments: scape (151/36), pedicel (52/19), F1 (19/16), F2 (19/16), F3 (14/22), F4 (19/30, F5 (19/32, F6 (30/32), F7 (30/32), and F8­F10 (club), 3­segmented club (69/36).

Mesosoma ( Fig. 9 ). Length/width/height: 360/235/295; mesoscutum: 135/235; interaxillar space: 20; scutellum: 175/145 with fine, lateral carinae dividing the clearly sculptured dorsum from the smooth and shiny sides; flank with a scapular furrow lacking the hind branch (not forming a “Y”); meso­metapleuron finely microsculptured with a sharp ventral mesopleural carina. Propodeum with a short, broadly transverse carina extending to the median point (extending beyond the apex of the scutellum) and with small lateral spurs (difficult to observe).

Fore wing ( Fig. 7 ). Length (959), width (307), disc length (343), width 0.84x disc length, uniformly setose with short setae; longest seta of marginal fringe (27) very short, 0.02x forewing width; stigmal vein elongate (170), marginal vein divided, distal part (115) shorter than basal part (208) and costal cell (247).

Metasoma. First gastral tergite relatively short, as long as wide (280/280); with short fluting.

Male ( Figs. 10, 12 ).

Head and thorax dark red, gaster yellow with posterior apex dark red; eyes reddishyellow; fore wing clear basally, with a large infuscate area from the marginal vein to the posterior margin of the wing; legs yellow with base of metacoxae dark brown; antenna with radicle and scape yellow, and pedicel and flagellum dark brown. Length/width measurements of antennal segments: scape (162.5/25), pedicel (55/42.5), F1 (80/27.5), F2 (62.5/27.5), F3 (62.5/30), F4 (57.5/30), F5 (57.5/30), F6 (57.5/30), F7(60/30), F8 (62.5/ 30), F9 (club) 1­segmented (92.5/27.5). Flagellar setae very long, about 1.5x the width of the antennal segment; genitalia shown in Fig. 12 .

Specimens examined and deposition

Holotype female, from parental stock of specimens collected in Thailand, Nakhon, Sawan, 28.i.1997, ex. Cybocephalus nipponicus feeding on Aulacaspis yasumatsui on Cycas sp. , R. M. Baranowski and A. Winotai, deposited in the USNM. Paratypes (6 females and 6 males on microscope slides; 16 females and 8 males on cards, same data as holotype, deposited in the USNM; Kasetsart University, Bangkok, Thailand; Florida State Collection of Arthropods, Gainesville, Florida, USA; and the Entomology Department, Faculty of Agriculture, Kyushu University, Fukuoka, Japan.

Etymology

This species name is a combination of two Latin words: in (against) + amicus (friend), referring to its being an enemy of our friend, the beetle that is feeding on this pest.

Discussion

This species was reared from specimens of Cybocephalus nipponicus (parental stock from Thailand), and may be the same species of Aphanogmus that Ishii (1937) reported as a parasitoid of Cybocephalus species found feeding on Unaspis (= Prontaspis ) yanonensis (Kuwana) on citrus in Japan.

Figures

FIGURES 7–12. Aphanogmus inamicus 7) female forewing, 8) female habitus, 9) female mesosoma, 10) male antenna, 11) female antenna, 12) male genitalia.