Ommatides parvidentis, Hoey-Chamberlain & Weirauch, 2019

Hoey-Chamberlain, Rochelle & Weirauch, Christiane, 2019, Taxonomic revision of the New World big-eyed minute litter bug genus Ommatides Uhler (Hemiptera: Schizopteridae), Zootaxa 4585 (1), pp. 73-99 : 83-85

Ommatides parvidentis sp. nov.

Figures 1–7 , 9 , 10

urn:lsid:zoobank.org:act:6F4457BC-0BDF-4BF8-B9A3-8D6A3724F05D

Material. Type material. Holotype, 1 male, PERU: Madre de Dios: Tambopata Co.: Lago Sandoval , 12.61056°S 69.03722°W, 285 m, 19 May 1998, P.P Parrillo, PP#98-128, Flight intercept trap (ED_6018) (UCR_ENT 00091263) (FMNH). Paratypes: GUYANA: Region 6: 47km NE Apoteri, 4.15142°N 58.21459°W, 115 m, 22 Sep 2014, MGB2366, M. G. Branstetter, Sifting leaf litter, 3 males (ED_6801) (UCR_ENT 00122373-4, UCR_ENT 00122377), 3 nymphs (UCR_ENT 00122378-UCR_ENT 00122380) ( UCR) . PERU: Madre de Dios: Tambopata Co.: Lago Sandoval , 12.61056°S 69.03722°W, 285 m, 19 May 1998, P.P Parrillo, PP#98-128, Flight intercept trap, 1 female slide-mounted in Canada balsam (ED_4109) (UCR_ENT 00098890), 1 male slide-mounted in Canada balsam (ED_4120) (UCR_ENT 00098866) ( FMNH) ; 19 May 1998, P.P Parrillo, Flight intercept trap, 1 female (ED_4121) (UCR_ENT 00098867) ( FMNH) . Los Amigos Biol.Sta. trail 14, 12.57141°S 70.09538°W, 231 m, 21 Dec 2010 – 22 Dec 2010, J. Heraty, Yellow pan trap, 1 point-mounted sputter coated and slide-mounted male (ED_171) (UCR_ENT 00057523) ( UCR) .

Diagnosis. Recognized among species of Ommatides by males and females submacropterous with very reduced membrane not reaching tip of abdomen; the male with dorsal lobe of the dorsally expanded 1st labial segment with 10 short, stout setae on the dorsal edge and 2 large, stout setae on at tip of smaller lobes at the tip of the large lobes; 1 pair of short, proximal processes on 4th labial segment; females with 5 setae between the 2 proximal most teeth of left anterior gonapophysis, and 4 setae between the 2 anterior most teeth of right anterior gonapophysis. Most similar to O. yoderi sp. nov., except for dorsal lobe of 1st labial segment large and beset with smaller lobes ( Fig. 5 ).

Description. Male: submacropterous with very reduced membrane not reaching tip of abdomen; total body length: 1.31–1.73 mm; body ovoid. COLORATION: body light to dark brown; legs mostly yellow with brown apical half of mid-tibia ( Fig. 1 ). SURFACE AND VESTITURE: dorsal lobe of 1st labial segment with 10 short setae along dorsal edges and 2 large setae on smaller lobes at tip of large lobes; forefemur without anterior spicules; 2nd tarsomere of hind leg with stout 2 setae anteroventrally. STRUCTURE. HEAD: disc declivous; dorsal lobe of 1st labial segment large, sinuate in lateral view with pronounced distal secondary lobe ( Figs 2 , 5 ); 2nd labial segment elongate; 3rd labial segment represented by small dorsal sclerite; 4th labial segment with 1 pair of short, proximal processes ( Fig. 5 ). THORAX: ratio of pronotal collar length to pronotum length 0.23–0.32; posterolateral margin of pronotum shallowly and broadly concave; collar depressed below rest of pronotum ( Fig. 1 ); postnotum long and curved; ratio of height to length of forefemur 0.17–0.29; tarsal formula 3-3-3; ratio of length of hind tibia to width of pronotum 1.03–1.30; venation of short thickened submacropterous forewing as in Fig. 7 ; tc short pentagonal; dc long triangle; An1 meets Cu; Cu forming 2 right angles; distal portion of wing beyond An1 short. ABDOMEN AND GENITALIA: as in genus description ( Fig. 9 A,B ), with spiracle 8 set upon membranous tubercle of tergum 8 process ( Fig. 6 ).

Female: macropterous with very reduced membrane not reaching tip of abdomen; total body length: 1.68 mm; body ovoid. COLORATION: as in male. SURFACE AND VESTITURE: labium as in generic description; vestiture on legs as in male. STRUCTURE. HEAD: as in generic description. THORAX: ratio of pronotal collar length to pronotum length 0.21; collar depressed below rest of pronotum; posterolateral margin of pronotum somewhat narrowly and shallowly concave ( Fig. 1 ); postnotum shape unknown; ratio of height to length of forefemur 0.24; tarsal formula 2-2-3; ratio of length of hind tibia to width of pronotum 1.20; venation of macropterous forewing as in male. ABDOMEN AND GENITALIA: as in genus description ( Fig. 9 C,D ), with 5 setae between the 2 anterior most teeth of left anterior gonapophysis, and 4 setae between 2 anterior most teeth of right anterior gonapophysis.

Etymology. Combination of Latin adjective “parvus” meaning “small” and noun “dens, dentis” meaning “tooth”. Named for the short, stout setae on the dorsally expanded 1st labial segment.

Distribution. Known from lowland rainforest in both Peru and Guyana, suggesting that this species has a very wide distribution range.

Macrohabitat and Collecting method: Primary and tropical Rainforest; Flight Intercept Trap, Sifting Leaf

Litter, and Yellow Pan Trap.

Figures

FIGURE 1. Dorsal habitus images of Ommatides spp. males and females.

FIGURE 2. Lateral habitus images of Ommatides spp. males and females. Black arrows pointing our 4th labial segment processes (O. duodentis male, O. tridentis male) and sparse setation of foretibia (O. nudus male)

FIGURE 3. Ventral habitus images of Ommatides males and females. Black arrow pointing our 4th labial segment processes (O. duodentis male).

FIGURE 4. SEMs of Ommatides parvidentis sp. nov. (UCR_ENT 00057523); (A) Head and thorax lateral, white arrows indicate the lateral margin of the pronotum and the enlarged 1st labial segment, (B) Head and thorax (minus wings) dorsal, (C) Head and thorax frontal, white arrows indicate the short setae along the dorsal edge of the 1st labial segment, the large setae on smaller lobes at tip of large lobes, the pair of short, proximal processes on the 4th labial segment, and sparse setation of foretibia, (D) hind coxa, white arrow indicating adhesive pad consisting of microtrichia on medial surface.

FIGURE 5. Labial structures of Ommatides spp. males in frontal view. Shading indicating degree of sclerotization. bubuccula; ca—conjunctival appendage; cly—clypeus; els—enlarged labial segment; mdpl—mandibular plate; mxpl—maxillary plate; proc—process; set—setae; spn—spine

FIGURE 6. Male genitalia of Ommatides spp.in dorsal view. Arrow indicating location of (or estimation of) abdominal spiracle 8 on tergum 8 process. ano—anophore; anop—anophoric appendage; at—anal tube; ca—conjunctival appendage; lpleft paramere; rp—right paramere; s9—sternum 9; t8—tergum 8; t8p—tergum 8 process; v—vesica.

FIGURE 7. Forewing of Ommatides spp. for males of all and females of selected species. An1—1st anal vein; An2—2nd anal vein; ac—anal cell; bc basal cell; Cu—cubital vein; cub—cubital cell; dc—discal cell; M—media; R—radius; R1—1st branch of radius; R2—2nd branch of radius; R3—3rd branch of radius; rc1-3—radial cells along costal margin; Sc—subcosta; sccsubcostal cell; tc—trapezoidal cell; wc—wing coupling organ.

FIGURE 9. Male and female genitalic features of selected species of Ommatides. (A) Ommatides duodentis sp. nov.: male genitalia in dorsal perspective (ED_3548; UCR_ENT 00100847); (B) Ommatides nudus sp. nov.: male genitalia in ventral perspective (ED_3542; UCR_ENT 00025951); (C) Ommatides parvidentis sp. nov.: female genitalia in dorsal perspective (ED_4109; UCR_ENT 00098890); (D) Ommatides nudus sp. nov.: female genitalia in lateral perspective (ED_3543; UCR_ENT 00025952). ano—anophore; anop—anophoric appendage; ag—anterior gonapophysis; at—anal tube; caconjunctival appendage; g—gonoplacs; lp—left paramere; pg—posterior gonapophysis; rp—right paramere; s7—sternum 7; s8—sternum 8; s9—sternum 9; spgd—spermathecal gland duct; spgl—spermathecal gland; spr—spermathecal reservoir; spth—spermatheca; st—styloid; t 7, 8, 9—tergum 7, 8, 9; t8p—tergum 8 process; t10—tergum 10; t10p—process of tergum 10; v—vesica.

FIGURE 10. Map of all species of New World Hypselosomatinae currently captured in the AEC database. Species of Ommatides are indicated by colored stars, females of Ommatides not identified to species by colored rectangles. Specimen records for the remaining genera of New World Hypselosomatinae, Glyptocombus, Hypselosomops, and Hypsohapsis, are shown as greyscale symbols.