Microchelonus avron, Papp, Jenő, 2016

Papp, Jenő, 2016, First Survey Of The Neotropical Species Of Microchelonus Szépligeti With Descriptions Of Twenty-Five New Species (Hymenoptera: Braconidae: Cheloninae), Acta Zoologica Academiae Scientiarum Hungaricae 62 (3), pp. 217-344 : 228-230

publication ID	https://doi.org/ 10.17109/AZH.62.3.217.2016
persistent identifier	https://treatment.plazi.org/id/03BDD709-4049-840F-9CAE-FC22FCBAFAE5
treatment provided by	Felipe
scientific name	Microchelonus avron
status	sp. nov.

Treatment

Microchelonus avron sp. n.

( Figs 35–44 View Figs 32–45 )

Materialexmined – Maleholotype: CostaRica, SanJosé, Escazu, 2–13 May 1988, leg. F. D. Porter. – Holotype is in good order: (1) glued direct to the pin by its right mesosomal side; (2) leftantennaapicallydeficient: flagellumwith 13 flagellomeres (i.e. ultimatefive flagellomeresmissing); (3) righthindfemurlessvisibleowingtothemounting. Holotype is deposited in HNHM, Hym. Typ. No. 12229 .

Etymology – Thenewspeciesreceivedthelatinizedphantasyname “avron”.

Description of the male holotype – Body 2.3 mm long. Antenna shorter than body, 2 mm long, with 18 antennomeres. Firstflagellomerethreetimesandpenultimateflagellomere 1.4 timesaslongasbroad. – Headindorsalviewtransverse ( Fig. 35 View Figs 32–45 ), 1.9 timesasbroadas long, eyealmosttwicelongerthantemple (20:11), templeratherreceded. OOLtwicelonger thanPOL, ocellismallandalmostround. Eyeinlateralview 1.7 timesashighaswide, genabeyondeyealmostevenlybroadandslightlylessbroadthaneye (15:17), genaweakly substriolate, shiny ( Fig. 37 seearrows View Figs 32–45 ). Clypeus 1.75 timesaswidebelowashighmedially, itslowermargintruncate, punctatetodisperselypunctate, interspacespolished ( Fig. 36 View Figs 32–45 ). Malarspace 1.3 timeslongerthanbasalwidthofmandible. Face 1.9 timesaswideashigh, rugose, innermarginofeyesfaintlydivergingventrally. Vertexweaklyandtransversely substriolate, shinytosubshiny, occiputsubstriolate ( Fig. 35 View Figs 32–45 ).

Mesosomainlateralviewscabrous. Notaulidistinct. Scutellumscabrous (cf. Fig. 82 View Figs 75–87 ). Fourdenticulesofpropodealcarinastrong ( Fig. 38 View Figs 32–45 ). Hindfemur 3.1 timesaslongasbroad medially, hindtibiadistallyasbroadasfemur ( Fig. 39 seearrows View Figs 32–45 ). Hindbasitarsusaslong astarsomeres 2–3 combined.

Forewingshorterthanbody, 2 mmlong. Pterostigma 2.5 timesaslongaswideand issuing r clearly distally from its middle, r 0.7 times as long as 3–SR (or 3–SR 1.4 times longerthan r), SR1 straight, 1–R1 0.7 timesaslongaspterostigma ( Fig. 40 View Figs 32–45 ).

Carapaceindorsalviewcylindrical, almosttwice (80:41) aslongasbroadposteriorly, longitudinallystriatewithfewanastomoses, interstriationsuneven- subshiny; carapace apicallyconicule- shapedandherestrio-rugose, shiny ( Fig. 41 View Figs 32–45 ). Carapaceinlateralview 3.3 timesaslongashighposteriorly, itshindfourthdeclivous ( Fig. 42 View Figs 32–45 ). Apicalforamenof carapacesmallandnearlyround: slightlywiderthanhigh (15:12, Fig. 43 View Figs 32–45 ). Apico-ventral incurvedpartofcarapaceaslongashindbasitarsus (cf. Fig. 54).

Bodyblack. Scapeandpedicelyellow, flagellumdarkeningbrownishtoblackish. Palpilightbrownish. Tegula + parateguladarkbrown, Legsblack (coxae) todarkbrown, brown, foreandmiddletibiaewithlightbrownishtint, tarsipaleyellow. Wingssubhya- line, areaaroundpterostigmabrownishinfumate, pterostigmabrown, veinslightbrown.

Femaleandhostunknown.

Distribution – Costa Rica.

Taxonomic position – The new species, Microchelonus avron , is closest to M. hebes sp. n. consideringtheirposteriorlyconicule- shapedcarpace ( Figs 41 View Figs 32–45 , 243), antenna 18–19 antennomeres, hindfemur 2.9–3.1 timesaslongasbroad ( Figs 39 View Figs 32–45 , 241) and black body. The two species differ from each other by the followingfeatureskeyed:

1 (2) Headindorsalviewtransverse, 1.9 timesasbroadaslong, eyealmost twicelonger (20:11) thantemple, templeratherreceded ( Fig. 35 View Figs 32–45 ). Four denticulesofpropodealcarinastrong ( Fig. 38 View Figs 32–45 ). Forewing: pterostigma lesswide, 2.5 timesaslongaswide, issuing r distallyfromitsmiddle, 1– R1 0.7 timesaslongaspterostigma ( Fig. 40 View Figs 32–45 ). Foretibia + tarsusbrownish. m: 2.3 mm. – Costa Rica M. avron sp. n.

2 (1) Headindorsalviewslightlylesstransverse, 1.8 timesasbroadaslong, eyeaslongastemple, templerounded (Fig. 235). Fourdenticulesofpropodealcarinalessstrong (Fig. 240). Forewing: pterostigmawide, 2.2 timesaslongaswideissuing r fromitsmiddle, 1–R1 0.6 timesaslongas pterostigma (cf. Fig. 146). Fore tibia + tarsus yellow. m: 2.7 mm. – Costa Rica M. hebes sp. n.

Inthekeytothemale Microchelonus species M. avron runsto M. curticarinulus sp. n. and M. topali Papp , see couplets 4 (9) – 8 (7).