Orasema stramineipes

Burks, Roger A., Heraty, John M., Dominguez, Chrysalyn & Mottern, Jason L., 2018, Complex diversity in a mainly tropical group of ant parasitoids: Revision of the Orasema stramineipes species group (Hymenoptera: Chalcidoidea: Eucharitidae), Zootaxa 4401 (1), pp. 1-107 : 15-16

Key to species of the Orasema stramineipes species group

1 Eye with setae that are visible at 50× magnification ( Fig. 246)............................... Orasema woolleyi n. sp.

- Eye setae not visible at 50× magnification ( Figs 22, 62)....................................................... 2

2 (1) Mesosoma purple to bluish-purple, without any greenish coloration ( Figs 106, 108), and head and mesosoma with moderately long setae ( Fig. 109)................................................................... Orasema kulli n. sp.

- Mesosoma at least partially greenish to blue-green or bronze, in combination with other colors; head and mesosoma with short setae ( Figs 81, 188, 190–192)............................................................................ 3

3 (2) Mesoscutal midlobe strongly and finely reticulate, with no areolate sculpture ( Figs 166, 256)......................... 4

- Mesoscutal midlobe with distinctive areolate sculpture, sometimes without any reticulate sculpture ( Fig. 14), but often with both types occurring together ( Fig. 81).................................................................... 8

4 (3) Axillula with complete subparallel longitudinal carinae ( Fig. 193)........................ Orasema rapo (Walker) (part)

- Axillula areolate or reticulate, without complete subparallel longitudinal carinae ( Figs 35, 167, 239, 257)................ 5

5 (4) F2 small, shorter than F3 and shorter than pedicel ( Fig. 165).................................... Orasema pisi n. sp.

- F2 not small, longer than F3 and longer than pedicel ( Figs 33, 237, 247).......................................... 6

6 (5) Mesoscutal sidelobe areolate-reticulate ( Fig. 34). Hind femur always yellow ( Fig. 31)......... Orasema chunpi n. sp. (part)

- Mesoscutal sidelobe finely reticulate, without areolate sculpture ( Figs 238, 256). Hind femur usually with at least a small amount of dark coloration ( Figs 235, 253).................................................................. 7

7 (6) Clypeus smooth ( Fig. 236). Mesosoma dark green ( Fig. 238)............................ Orasema torrensi n. sp. (part)

- Clypeus partially reticulate ( Fig. 254). Mesosoma brightly colored, mostly bright green but with red, blue and yellow areas ( Fig. 256)..................................................................... Orasema worcesteri (Girault)

8 (3) Mesoscutellum dorsally with longitudinal carinae ( Figs 20, 126, 127, 182, 183).................................... 9

- Mesoscutellum without longitudinal carinae ( Figs 14, 211) or only with carinae laterally on axillula ( Fig. 193)........... 11

9 (8) Mesoscutal sidelobe almost entirely smooth ( Figs 20, 182).................................................... 10

- Mesoscutal sidelobe with transverse carinae ( Fig.126)........................................ Orasema llika n. sp.

10 (9) Mesoscutal midlobe with transverse carinae ( Fig. 20).................................... Orasema cameroni Howard

- Mesoscutal midlobe areolate, without distinctive transverse carinae ( Fig. 182).................... Orasema qincha n. sp.

11 (8) Face smooth in ventral half lateral to clypeus, with wrinkle-like sculpture dorsally (lateral and dorsal to antennal scrobe, Fig. 132)................................................................................ Orasema mati n. sp.

- Face reticulate over most or all of its surface ( Figs 140, 208).................................................. 12

12 (11) Mesoscutal sidelobe with transverse carinae ( Fig. 24)........................................ Orasema carchi n. sp.

- Mesoscutal sidelobe without transverse carinae ( Figs 142, 210)................................................ 13

13 (12) Hind femur with some dark brown coloration ( Fig. 235) and clypeus smooth ( Fig. 236)............ Orasema torrensi n. sp.

- Hind femur entirely yellow ( Fig. 207) or, if partially brown, then clypeus reticulate ( Fig. 79)......................... 14

14 (13) Mesoscutal midlobe posteriorly almost entirely reticulate or areolate-reticulate ( Figs 142, 190–192, 210)............... 15

- Mesoscutal midlobe posteriorly almost entirely areolate, lacking reticulate sculpture over most of its surface ( Figs 14, 202, 228)............................................................................................... 27

15 (14) Axillula with complete longitudinal carinae ( Fig. 144)....................................................... 16

- Axillula areolate, carinae diagonal or incomplete ( Fig. 219)................................................... 21

16 (15) Mesoscutal midlobe covered mostly by a large dark reddish to black area, present posteriorly and medially ( Fig. 56). Mesoscutellum without large purple lateral areas ( Fig. 56)................................ Orasema cozamalotl n. sp.

- Mesoscutal midlobe mostly blue or green ( Figs 190, 192), or mesoscutellum with large purple lateral areas ( Fig. 191)..... 1 7

17 (16) Clypeus reticulate ( Fig. 79)................................................. Orasema freychei (Gemignani) (part)

- Clypeus smooth or nearly so ( Figs 42, 70, 140)............................................................. 18

18 (17) Mesoscutal sidelobe with smooth area posteriorly, otherwise with weaker reticulate areas than midlobe ( Fig. 142). Antenna with dark multiporous plate sensilla that contrast with the pale flagellomeres ( Fig. 141)................................................................................................. Orasema minutissima Howard (small form)

- Mesoscutum uniformly reticulate, with sidelobe similar to midlobe. Antenna with multiporous plate sensilla similar to color of flagellomeres ( Figs 43, 70, 189)......................................................................... 19

19 (18) Mesoscutellum areolate ( Figs 190–192).................................................. Orasema rapo (Walker)

- Mesoscutellum areolate-reticulate or reticulate ( Figs 45, 72)................................................... 20

20 (19) Axillula with reticulate sculpture in addition to the parallel carinae ( Figs 47, 48).. Orasema costaricensis Wheeler & Wheeler

- Axillula smooth between the parallel carinae ( Fig. 73)....................................... Orasema evansi n. sp.

21 (15) Head dorsally with coarse areolate sculpture ( Fig. 216)......................................... Orasema taku n. sp.

- Head dorsally reticulate, with very weak or no areolate sculpture ( Figs 32, 79).................................... 22

22 (21) Clypeus reticulate ( Fig. 79)............................................................ Orasema freychei (part)

- Clypeus smooth or nearly so ( Figs 32, 208)................................................................ 23

23 (22) Fore femur yellow ( Fig. 171)........................................................................... 24

- Fore femur partially brown ( Fig. 31)..................................................................... 25

24 (23) Axillula entirely areolate ( Fig. 175). Mesoscutal sidelobes protruding, abrupt anteriorly ( Fig. 174)..... Orasema qillu n. sp.

- Axillula with a reticulate area ( Fig. 211). Mesoscutal sidelobes gradually curved anteriorly ( Fig. 210).......................................................................................... Orasema stramineipes Cameron (part)

25 (24) Fore femur almost entirely dark brown ( Fig. 31)............................................ Orasema chunpi n. sp.

- Fore femur with apical quarter yellow ( Fig. 261)........................................................... 26

26 (25) Flagellum pale ( Fig. 149). Mesoscutellum with a few larger posterior areoles that have reticulate sculpture inside them ( Fig. 150)............................................................................... Orasema nyamo n. sp.

- Flagellum dark ( Fig. 263). Mesoscutellum with a single large smooth posterior areole ( Fig. 264)....... Orasema yaax n. sp.

27 (14) Mesoscutal midlobe with anterior red (or more rarely, yellowish) areas (sometimes as extensions from a more posterior area as in Fig. 210), also with smaller red areas on the axilla or mesoscutellum ( Figs 100, 158, 202, 210)..................... 28

- Mesoscutal midlobe, axilla, and mesoscutellum without red or yellow area ( Figs 92, 118, 228)....................... 32

28 (27) Fore femur yellow ( Figs 97, 207)........................................................................ 29

- Fore femur brownish ( Figs 155, 199)..................................................................... 30

29 (28) Axillula entirely areolate ( Fig. 101). Petiole in females extending far beyond hind coxal apex ( Figs 97, 104).................................................................................................. Orasema kaspi n. sp.

- Axillula partially reticulate ( Fig. 211). Petiole in females not or hardly extending beyond hind coxal apex ( Figs 207, 214)................................................................................. Orasema stramineipes (part)

30 (28) Funiculars pale brown ( Fig. 201)......................................................... Orasema rikra n. sp.

- Funiculars dark brown ( Fig. 157)........................................................................ 31

31 (30) Axillula with distinct longitudinal and oblique carinae anteriorly ( Fig. 15). Stigmal vein narrow, nearly at a right angle with wing margin ( Fig. 16).............................................................. Orasema arimbome n. sp.

- Axillula without distinct longitudinal carinae anteriorly, instead simply areolate ( Fig. 158). Stigmal vein more capitate, at an acute angle with wing margin ( Fig. 160)................................................... Orasema pirca n. sp.

32 (27) Mesoscutellar disc long and narrow, at least 1.2× as long as broad ( Fig. 92)..................... Orasema hyarimai n. sp.

- Mesoscutellar disc broader, not more than 1.1× as long as broad ( Figs 118, 228)................................... 33

33 (32) Mesoscutellar disc areolate-reticulate ( Fig. 228). Pedicel and flagellum yellow to yellowish-brown in females ( Fig. 227).......................................................................................... Orasema tapi n. sp.

- Mesoscutellar disc areolate ( Fig. 118). Pedicel and flagellum dark brown in females ( Fig. 117)...... Orasema llanthu n. sp.