Dalek, 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 : 637-638

Key to Costa Rican species of Dalek

(Females)

1. Scape more than 6X as long as broad ...................................... thanatos sp.nov. (p. 639)

- Scape less than 6X as long as broad ............................................................................... 2

2 (1) Scutellum with not more than apical one-fifth smooth and shiny (Figs 1753, 1758, 1766) .....................................................................................................................3

- Scutellum with at least apical one-third smooth and shiny (e.g. Figs 1773, 1796, 1804, 1820, 1828) .......................................................................................................... 5

3 (2) Funicle with linear sensilla on F1; clypeal margin (Fig. 1752) with a distinct, convex median lobe; fore wing (Fig. 1750) not more than about 2.4X as long as broad; ovipositor shorter than mid tibia with gonostylus shorter than mid tibial spur so that ovipositor is hidden or hardly exserted, the exserted part not more than 0.2X as long as mid tibial spur; syntergum apically broadly truncate ............................. ........................................................................................... carme sp.nov. (p. 640)

- Funicle without linear sensilla on F1; clypeal margin (Figs 1761, 1765) medially virtually straight or hardly convex, without a distinct median lobe; fore wing (Figs. 1759, 1764) at least about 2.5X as long as broad; ovipositor longer than mid tibia with gonostylus at least as long as mid tibial spur so that ovipositor is clearly exserted, the exserted part at least 0.5X as long as mid tibial spur; syntergum apically broadly rounded or acute ..................................................................................... 4

4 (3) Posterior ocellus closer to eye than to occipital margin; mesosocutum bright, metallic, dark green; mid tibial spur as long as corresponding basitarsus; sculpture on scutellum (Fig. 1758) more or less reaching apex ........... ananke sp.nov. (p. 642)

- Posterior ocellus closer to occipital margin than to eye; mesosocutum dull, dark blue; mid tibial spur clearly longer than corresponding basitarsus; apical one-fifth of scutellum (Fig. 1766) smooth and shiny ........................... orthia sp.nov. (p. 644)

5 (2) Funicle segments (Fig. 1771) relatively slender, F1 at least 2X as long as broad, F6 1.8X as long as broad, scape mostly yellow, subcylindrical and at least 4.5X as long as broad ............................................................................... pleione sp.nov. (p. 646)

- Funicle (e.g. Figs 1778, 1790, 1799, 1807) with both F1 and F6 not more than about 1.5X as long as broad, if F1 nearly 2X as long as broad then scape almost entirely dark brown. clearly broadened and flattened and less than 4X as long as broad ......... 6

6 (5) Exserted part of ovipositor more than 1.5X as long as mid tibial spur, gonostylus at least 2.5X as long as mid tibial spur ............................................................................ 7

- Exserted part of ovipositor not longer than mid tibial spur, gonostylus not more than 2.0X as long as mid tibial spur ..................................................................................... 8

7 (6) Propodeum with only about 10 silvery setae outside spiracle that extend towards posterior margin but not down side towards hind coxa; flagellum (Fig. 1778) uniformly dark brown, fore wing (Fig. 1779) completely hyaline except for a small weakly infuscate area immediately below marginal vein ................ jigas sp.nov. (p. 648)

- Propodeum with at least 30 very conspicuous, silvery setae outside spiracle that extend towards posterior margin and down side nearly to hind coxa; antenna (Fig. 1784) with F1 pale orange and F2 orange-brown; fore wing (Fig. 1782) weakly suffused brown medially as well as having a small infuscate area immediately below marginal vein ................................................................. minerva sp.nov. (p. 650)

8 (6) Scape (Figs 1790, 1798, 1799) completely yellow or pale orange ................................. 9

- Scape (e.g. Figs 1808, 1813, 1816, 1826) brown at least proximally .......................... 10

9 (8) All coxae dark brown; side of propodeum above hind coxa with conspicuous sculpture, dull, without a smooth and shiny area anteriorly ................. arax sp.nov. (p. 652)

- Fore and hind coxae yellow, mid coxa largely yellow or pale orange with some brown proximally or completely brown; side of propodeum above hind coxa with shallow sculpture, quite shiny anteriorly ....................................... saurax sp.nov. (p. 654)

10 (8) Scape (Fig. 1808) more or less completely dark brown; sculpture on mesoscutum (Fig. 1804) about as deep as that on scutellum ......................... cyclos sp.nov. (p. 656)

- Scape (e.g. Figs 1813, 1816, 1826, 1833) proximally dark brown with at least apical one-third pale orange or yellow; sculpture on mesoscutum (Figs 1812, 1820, 1825, 1828) usually distinctly shallower than that on scutellum ................................. 11

11 (10) Posterior ocellus closer to occipital margin than to eye ........... gubrana sp.nov. (p. 658)

- Posterior ocellus equidistant from eye and occipital margin or closer to eye ...............12

12 (11) Scape less than 4X as long as broad ......................................... pomona sp.nov. (p. 660)

- Scape more than 4X as long as broad ........................................................................... 13

13 (12) Ovipositor about 1.1X as long as mid tibia, gonostylus less than 1.4X as long as mid tibial spur, exserted part of ovipositor less than 0.2X length of mid tibial spur; sculpture on scutellum (Fig. 1825) extending some way past pair of campaniform sensilla so that sculptured area immediately distad of these sensilla is at least 5 cells deep, smooth distad of these ...................................... elana sp.nov. (p. 662)

- Ovipositor about 1.6X as long as mid tibia, gonostylus more than 1.5X as long as mid tibial spur, exserted part of ovipositor more than 0.5X as long as mid tibial spur; sculpture on scutellum (Fig. 1828) not reaching more posteriorly than pair of campaniform sensilla or hardly so, distally completely smooth and shiny ............ .......................................................................................... nationi sp.nov. (p. 664)