Georynus aitne, Noyes, 2023

Noyes, John Stuart, 2023, ENCYRTIDAE OF COSTA RICA (HYMENOPTERA: CHALCIDOIDEA), 4 Subfamily Encyrtinae: tribes Arrhenophagini, Habrolepidini, Cerapterocerini, Cheiloneurini, Trechnitini, Cercobelini, Polaszekiini, Protyndarichoidini, Gahaniellini and Syrphophagini (part), mainly primary parasitoids and hyperparasitoids of Coccoidea and Psylloidea (Hemiptera), Taxonomic Monographs on Neotropical Hymenoptera (Oxford, England) 2 (11), pp. 1-921 : 165-167

Georynus aitne sp.nov.

( Figs 417-422; Hab. E 68)

DIAGNOSIS. Female (length about 1.3-1.8mm): fore wing ( Fig. 419) completely hyaline; head with 4 or 5 setae medially in front of anterior ocellus; area immediately below eye completely smooth and shiny; antenna ( Fig. 417) with scape about 4.0X as long as broad; funicle with all segments slightly longer than broad; clava with sensory area extending about 0.3X as long ventral surface; fore wing ( Fig. 419) with linea calva open near posterior wing margin; costal cell with two lines of setae on ventral surface in apical half; syntergum about 1.3X as long as mid tibia; ovipositor about 2X as long as mid tibia; gonostylus about 2.5X as long as mid tibial spur. Male: unknown.

Female (holotype): length, including ovipositor, 1.76mm; excluding ovipositor, 1.61mm (CPD).

Head mainly black; frontovertex generally with a weak brassy and coppery purple sheen with some blue reflections; scrobes with a weak dark green sheen mixed coppery purple, interantennal prominence with a weak coppery purple sheen; temple and gena with a weak dark metallic green sheen, position of malar sulcus broadly marked metallic coppery purple; frontovertex, gena and interantennal prominence with short, moderately conspicuous, dark brown setae; clava brown; pronotum black with a coppery purple and brassy sheen; propleuron and prosternum dark brown; mesoscutum black with a slight metallic dark blue and purple sheen; tegula dark brown with a slight purple and brassy sheen; axilla dark brown with a purple sheen; scutellum largely metallic dark green, purplish anteriorly between axillae, extreme apex shining metallic green, side largely coppery mixed metallic green; dorsum of thorax clothed with dark brown setae; metanotum dark orange-brown with a weak brassy sheen; mesopleuron dark purple-brown with a weak brassy sheen; mesosternum dark brown; fore femur proximally white, very pale orange distally, tibia and tarsus very pale orange; mid femur mostly white, apex pale orange, tibia largely white, but very pale orange at apices, spur very pale orange, tarsus pale orange; hind femur white, apical one-third pale orange, tibia white proximally, apex very pale orange, tarsus very pale orange; fore wing ( Fig. 419) hyaline; propodeum dark orange-brown with a weak purple and brassy sheen, setae anterior to and outside spiracle white, translucent and moderately conspicuous; gaster dark brown dorsally mainly with a coppery and purple sheen, but mixed brassy and blue, side and venter mainly with a mixed green, blue, brassy, purple and coppery sheen; gonostylus dark brown with apex widely pale orange.

Head about 8.3X as wide as frontovertex, with 4 or 5 setae medially in front of anterior ocellus, a line of sparse setae along inner eye margin continued along lower eye margin; ocelli forming an angle of about 35°; temple and gena slightly more shiny than frontovertex, with slightly shallower, longitudinally elongate, strigose to striate-reticulate sculpture, area immediately below eye completely smooth and very shiny; eye separated from scrobal margin by less than 0.5X diameter of ocellus, area between eye and scrobe with shallow, transversely elongate, imbricate-reticulate sculpture; sculpture on interantennal prominence polygonally reticulate but a little shallower that on frontovertex; antenna as in Fig. 417; scape hardly broadened, about 4.1X as long as broad; funicle with all segments only slightly longer than broad, becoming wider distad; clava slightly broadened, about 1.2X as wide as F6, nearly as long as F2-F6 combined, outer suture slightly oblique, sensory area enlarged, extending ventrally about 0.3X length of clava, apex conspicuously obliquely truncate. Relative measurements: HW 70.5, HH 69, FV 8.5, POL 4, OOL 0, OCL 8.5, AOL 10, EL 52, EW 44, MS 28, SL 37, SW 9.

Thorax ( Fig. 420) with visible part of mesoscutum about 1.9X as broad as long; scutellum about as long as broad; fore wing with venation and distribution of setae as in Figs 418, 419; mid tibial spur shorter than basitarsus; propodeum ( Fig. 420) medially about 0.16X as long as scutellum, with some shallow, irregular sculpture medially; about 7 or 8 setae anterior to and outside spiracle. Relative measurements: FWL 72, FWW 29; HWL 52, HWW 12.

Gaster with hypopygium reaching about 0.5X towards apex (but slightly retracted towards anterior); syntergum about 1.3X as long as mid tibia, with apex very acute; ovipositor slightly exserted, the exserted part about as long as mid tibial spur or 0.25X as long as mid tibia.

Paratype. Funicle with linear sensilla present only on F4-F6; hypopygium Fig, 421; ovipositor Fig. 422. Relative measurements: OL 72, GS 24 [MT 35].

Variation. Females vary in length from 1.29-1.81mm, some funicle segments may be quadrate, the purple area in the position of the malar sulcus may be absent, and there may be only 4 setae outside the propodeal spiracle.

Male. Unknown.

DISTRIBUTION. Costa Rica.

HOSTS. Unknown.

MATERIAL EXAMINED.

Type material. Holotype E: COSTA RICA, Guanacaste, Sta Rosa NP,Hacienda 4-C, 5-26.x.1985 (Janzen & Gauld) . Paratypes: COSTA RICA, 6E, Guanacaste, Santa Rosa NP, Hacienda , various dates 14.ix.1985 - 20.xii.1986 (Janzen & Gauld); 1E, Guanacaste, PN Palo Verde, Cerro Guayacán, LN 260952 385020, 140m, 19.v-15.vi.1999 (I. Jiménez); 3E, Guanacaste, PN Palo Verde, Sector Palo Verde , Cerro Guayacán , LN 259350 389600, 140m, vii-viii.1999 (I. Jiménez); 1E, Guanacaste, PN Palo Verde, Sector Palo Verde , Cerro Guayacán , LN 259750 388500, 100m, #57963, 11.vii-10.viii.2000 (I. Jiménez); 1E, Guanacaste, PN Palo Verde, Sector Palo Verde , Cerro Guayacán , LN 259450 388750, 150m, #53297, 15.vi.1999 (I. Jiménez); 2E, Guanacaste, PN Palo Verde, Camino Alto Viejo , LN 260770 386300, 40m, ix-x.2000 and 12.x-12.xi.2000 (I. Jiménez); 1E , Heredia, Santo Domingo , 1100m, cafetal, 9.ix.1994 (M. Cerda, P. Hanson) . Holotype in MZUCR, paratypes in MZUCR, NHMUK .