Hylcalosia Fischer, 1967

Li, Jimin, Wang, Lingmin, Chen, Jiahua, Yu, Shenkai & Yao, Junli, 2021, A new species of the genus Hylcalosia from China (Hymenoptera: Braconidae: Alysiinae), Zootaxa 5040 (2), pp. 289-295 : 290-291

Key to species in the genus Hylcalosia Fischer

Yao et al. (2020) and Zhu et al. (2018) provide the most recent dichotomous keys to the Palaearctic species of Hylcalosia . The dichotomous key with all known species presented here is a modification of those keys.

1 Notauli absent in posterior half of mesoscutum; T2 much longer than T3......................................... 2

- Notauli present in posterior half of mesoscutum (but sometimes shallow) and fused with mid pit; T2 almost as long as T3 (T2 0.83 × longer than T 3 in H. yongjingzengi Yao n. sp.)....................................................... 10

2 Vein 1cu-a of fore wing interstitial; notauli present only in anterior third of mesoscutum; metanotum without mid-longitudinal carina................................................................... H. sutchanica Belokobylskij, 1992

- Vein 1cu-a of fore wing antefurcal or postfurcal; notauli present in anterior half of mesoscutum; metanotum with high midlongitudinal carina.................................................................................... 3

3 Propodeum almost entirely with dense irregular and rough cellular sculpture; eye with sparse and short setae............ 4

- Propodeum slightly wrinkled, without cellular sculpture; eye glabrous........................................... 5

4 Body black to blackish brown; ovipositor sheath 0.8 × as long as fore wing, ovipositor 1.8 × longer than metasoma; T1 1.1 × longer than apical width............................................................ H. perkna Yao et al., 2020

- Body brownish yellow to reddish brown; ovipositor sheath 0.4–0.5 × as long as fore wing, ovipositor as long as metasoma, rarely up to 1.2 × longer than metasoma; T1 0.9–1.0 × longer than apical width.......... H. hymaenei Belokobylskij, 1992

5 Length of eye more 2.0 × longer than temple in dorsal view; areola of propodeum present posteriorly; body mainly yellowish to yellowish brown.............................................................. H. carinata Zhu et al., 2018

- Length of eye 1.2–1.9 × longer than temple in dorsal view; areola of propodeum absent; body mainly reddish brown to black ................................................................................................... 6

6 Scutellar sulcus with five carinae; mid pit short, restricted to posterior quarter of mesoscutum......................... 7

- Scutellar sulcus with one or three carinae; mid pit long, present in posterior half of mesoscutum....................... 8

7 Length of eye 1.6 × longer than temple in dorsal view; vein 1cu-a of fore wing postfurcal; vein m-cu of hind wing slightly postfurcal; T2 1.4 × longer than T3............................................... H. dichromata Yao et al., 2020

- Length of eye 1.2 × longer than temple in dorsal view; vein 1cu-a of fore wing weakly antefurcal; vein m-cu of hind wing weakly antefurcal; T2 1.07 × longer than T3...................................... H. poricrenulata Zhu et al., 2018

8 Precoxal sulcus nearly complete; vein m-cu of hind wing interstitial; T2–T3 frequently with wide and shallow mid-longitudinal groove.................................................................... H. ventisulcata Zheng et al., 2012

- Precoxal sulcus incomplete; vein m-cu of hind wing antefurcal or postfurcal; T2–T3 without mid-longitudinal groove, rarely only with narrow smooth stripe.......................................................................... 9

9 Length of eye 1.4 × longer than temple in dorsal view; vein m-cu of hind wing obviously antefurcal; body mainly reddishbrown........................................................................... H. leura Yao et al., 2020

- Length of eye 1.7 × longer than temple in dorsal view; vein m-cu of hind wing weakly postfurcal; body mainly black.................................................................................. H. melasaraia Zhu et al., 2018

10 Length of eye 1.5–2.2 × longer than temple in dorsal view; T1 and T2 mainly yellowish............................ 11

- Length of eye 0.7–1.1 × longer than temple in dorsal view; T1 and T2 black or dark reddish brown, sometimes mainly brown (except H. laosensis Fischer )........................................................................... 14

11 Notauli complete; ovipositor sheath about as long as metasoma...................... H. hemiflava van Achterberg, 1983

- Notauli reduced posteriorly; ovipositor sheath much longer than metasoma...................................... 12

12 Length of eye 1.5 × longer than temple in dorsal view; vein m-cu of hind wing interstitial; vein r-m of fore wing vertical................................................................................. H. verticalis Zhu et al., 2018

- Length of eye 1.8–2.2 × longer than temple in dorsal view; vein m-cu of hind wing antefurcal or weakly postfurcal; vein r-m of fore wing oblique (inclivous)........................................................................... 13

13 Notauli reaching almost posterior part of mid pit, widely crenulated; precoxal sulcus wide and short, widened in middle, present in anterior 2/3 of mesopleuron.................................................. H. eurykephale Yao et al., 2020

- Notauli reaching anterior third of mid pit, finely crenulated; precoxal sulcus slender, narrow in middle, present in anterior 3/4 of mesopleuron................................................................. H. bothynis Yao et al., 2020

14 Length of eye 0.7–0.8 × longer than temple in dorsal view; median length of T2 subequal to its maximum width......... 15

- Length of eye about as long as temple in dorsal view; median length of T2 distinctly less than its maximum width....... 16

15 Distal upper lobe of mandible consists of two narrow and short teeth; mid pit distinctly longer than half of mesoscutum; T1–T3 longitudinally striate and T1 1.5 × longer than its apical width............................. H. ruficeps Cameron, 1910

- Distal upper lobe of mandible consists of single, wide and long lobe; mid pit shorter than half-length of mesoscutum; T1–T3 reticulate-striate and T1 shorter than its apical width.................................. H. complexa Chen & Wu, 1994

16 Vein 2RS of fore wing curved in “S” shape; apical segments of metasoma protruding beyond T3 slightly................................................................................................ H. laosensis Fischer, 2008

- Vein 2RS of fore wing weakly curved, almost straight; apical segments of metasoma not protruding beyond T3.......... 17

17 Precoxal sulcus incomplete and irregularly rugose; vein 1m-cu of fore wing interstitial; scutellar sulcus with six carinae.................................................................................. H. yongjingzengi Yao n. sp.

- Precoxal sulcus complete and entirely crenulated; vein 1m-cu of fore wing postfurcal; scutellar sulcus not so........... 18

18 Propodeum smooth basally; vein 1m-cu of fore wing distinctly postfurcal; length of eye almost equal to temple in dorsal view.......................................................................... H. maetoi van Achterberg, 1983

- Propodeum entirely coarsely and densely rugose-areolate, weakly sculptured basally; vein 1m-cu of fore wing weakly postfurcal; length of eye 1.1 × longer than temple in dorsal view............................. H. livadiae Belokobylskij, 2015