Myrmeleontidae

Miller, Robert B. & Stange, Lionel A., 2011, Antlions of Hispaniola (Neuroptera: Myrmeleontidae), Insecta Mundi 2011 (182), pp. 1-28 : 2-3

Key to extant species of Myrmeleontidae from Hispaniola

Adults

1. Origin of hindwing radial sector well distad of base, about same distance as that of forewing, two or more presectoral crossveins ( Figure 3 ); male with pilula axillaris; forefemur with row of clubbed setae or setae on ventral surface of distal tarsomere less than 1/3 length of tarsomere diameter .................................................................................................................................... 2

— Origin of hindwing radial sector near base, about half as distant from base as that of forewing, one (rarely two) presectoral crossveins ( Figure 5 ); male without pilula axillaris; forefemur without knobbed setae; setae on ventral surface of distal tarsomere more than 1/2 as long as tarsomere diameter (Tribe Nemoleontini ) ................................................................................................. 4

2(1). Hindfemur with elongate sense hair; distal palpomere of labium with sensory area slit-like; hindwing vein CuA unites with posterior fork of MP2 shortly after fork ( Figure 1 ); large, robust, hairy species (Tribe Acanthaclisini ) ...................................... Vella eggerti Esben-Petersen

— Hindfemur without elongate sense hair; distal palpomere of labium with sensory area oval-shaped; hindwing vein CuA runs to hind margin, connected to posterior fork of MP2 by several crossveins ( Figure 3 ); medium size, slender, not especially hairy species ................................................ 3

3(2). Ventral setae of distal tarsomere less than 1/3 length of tarsomere diameter; forefemur without clubbed setae; male ectoproct without postventral lobe; forewing vein 2A runs close to 1A for a short distance and then bends at a sharp angle toward 3A (Tribe Myrmeleontini ) ................... ..................................................................................................... Myrmeleon insertus Hagen

— Ventral setae of distal tarsomere more than 1/2 length of tarsomere diameter; forefemur with clubbed setae; male ectoproct with elongate postventral lobe ( Figure 2 ); forewing vein 2A runs in a fairly even curve and is connected to 3A by a short crossvein or connected to it for a short distance (Tribe Brachynemurini ) ............................................ Peruveleon indiges (Walker) 4(1). Forefemur slender and elongate, at widest point about equal at most to interantennal distance, with sparse pubescence (Figure 10); femoral sense hair of foreleg less than one-third length of femur; female ectoproct not produced ventrally ( Eremoleon ) .................................................. 5

— Forefemur swollen, at widest point much wider than interantennal distance, with abundant pubescence, especially on closing face; femoral sense hair of fore leg over one-half length of femur; female ectoproct with ventral projection ( Purenleon ) .................................................. 8

5(4). Mesoscutum and mesoscutellum with many elongate, erect white bristles ............................... 6

— Mesoscutum and mesoscutellum with inconspicuous setae only ................................................ 7

6(5). Antennal flagellomere 3 wider than long; female ectoproct with short digging setae, posterior gonapophysis with some setae longer than gonapophyseal length ............................................. .............................................................................................. Eremoleon cerverinus (Navás)

— Antennal flagellomere 3 longer than wide; female ectoproct without digging setae, posterior gonapophysis with all setae shorter than one-half length of gonapophysis, somewhat thickened ...................................................................................... Eremoleon petrophila new species

7(5). Body predominately dark brown; forewing with numerous dark brown suffused areas ( Figure 4 ); antennal flagellomere 3 longer than wide ................................ Eremoleon cerverai (Navás)

— Body predominately pale brown; wings without markings (Figure 12); antennal flagellomere 3 as wide as long ....................................................................... Eremoleon phasma new species

8(4). Pronotum with elongate white bristles at lateral margin, at least subequal in length to those on forecoxa; midfemoral sense hair about one-half length of forefemoral sense hair ...................... .................................................................................................. Purenleon bistictus (Hagen)

— Pronotum without elongate white bristles at lateral margin (sometimes with black setae laterally which are shorter than those on forecoxa); midfemoral sense hair about one-half to as long as that of midfemur ...................................................................................................................... 9

9(8). Forewing costal area with many crossveins interconnected; midfemoral sense hair about one-half as long as that of forefemur ....................................................... Purenleon imbellis (Banks)

— Forewing costal area without interconnected crossveins except rarely toward stigma; midfemoral sense hair as long as that of forefemur .................................................................................. 10

10(9). Basitarsus of hindleg 2.5 times longer than greatest diameter, much shorter than pretarsal claws ........................................................................................ Purenleon woodruffi new species

— Basitarsus of hindleg at least 3.0 times longer than its greatest diameter, nearly as long as pretarsal claws ......................................................................................................................... 11

11(10). Forecoxa with a few elongate white bristles posteriorly nearly equal in length to greatest coxal diameter; forewing costal area with cells above radial sector at least as high as long; subcostal area often narrowly dark suffused opposite some of the dark segments of radial vein; female ectoproct upturned ............................................................... Purenleon nunezi new species

— Forecoxa with white bristles (if present) shorter than coxal diameter; forewing costal area with cells above radial sector wider than long; subcostal area not suffused; female ectoproct not upturned .......................................................................................... Purenleon minor Banks

Figures

Figures 1-4. Adult antlions. 1) Vella eggerti (Hagen), male. 2) Peruveleon indiges (Walker), male. 3) Myrmeleon insertus Hagen, female. 4) Eremoleon cerverai (Navás), male.

Figures 5-8. Eremoleon cerverinus (Navás). 5) Adult male. 6) Adult body. 7) Adult male legs. 8) Female terminalia.