Ommatides pristis, 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 : 86-88

Ommatides pristis sp. nov.

Figures 1–3 , 5–6 , 8 , 10

urn:lsid:zoobank.org:act:7FBE20D9-0ADA-4B04-8139-1A5AA974E423

Material. Type material. Holotype, male slide-mounted in Canada balsam, TRINIDAD AND TOBAGO: Trinidad: Arima Co.: William Beebe Tropical Research Station , 10.68727°N 61.2983°W, 370m, 21 Jul 2013 – 22 Jul 2013, C. Weirauch, Yellow pan trap, (ED_2659) (UCR_ENT 00088130) (UCR). Paratypes: TRINIDAD AND TOBAGO: Trinidad: Arima Co.: William Beebe Tropical Research Station , 10.68727°N 61.2983°W, 370m, 21 Jul 2013 – 22 Jul 2013, C. Weirauch, Yellow pan trap, 1 female slide-mounted in Canada balsam (ED_2660) (UCR_ENT 00088131) ( UCR) ; 26 Jul 2013 – 27 Jul 2013, C. Weirauch, Yellow pan trap, 1 female slide-mounted in Canada balsam (ED_2644) (UCR_ENT 00087659) ( UCR) . Tunapuna-Piarco Regional Corporation Co.: Tacarigua, Caura Royal Road , 10.68722°N 61.37°W, 104 m, 18 Jul 2013 – 19 Jul 2013, C. Weirauch, J. Heraty, A. Baker, Yellow pan trap, 1 male slide-mounted in Canada balsam (ED_2642) (UCR_ENT 00087473) ( UCR) , 1 female (ED_2771) (UCR_ENT 00086479) ( UCR) .

Diagnosis. Recognized among species of Ommatides by males submacropterous without membrane and not quite reaching tip of abdomen, and females macropterous with small membrane reaching tip of abdomen; males with dorsal lobes of expanded 1st labial segment extremely expanded with many (variable number) short, stout setae and without processes on 4th labial segments; spiracle 8 set upon basally sclerotized tubercle of tergum 8 process. Most similar to O. pillcopata sp. nov., but distinguished by being macropterous, and by basally sclerotized tubercle of tergum 8 process.

Description. Male: submacropterous without membrane and not quite reaching tip of abdomen; total body length: 1.53–1.87 mm; body elongate ovoid. COLORATION: wings dark brown, with pale stripe between costa and clavus; head, pronotum, and body dark brown; 1st and 2nd labial segments yellow; 3rd and top of 4th labial segments tan; tip of 4th labial segments black; legs yellow with brown patches on coxae and brown apex of tibia and tarsi ( Fig. 1 ). SURFACE AND VESTITURE: Dorsally expanded 1st labial segment with many (variable number) short, stout setae; forefemur without anterior spicules; 2nd tarsomere of hind leg with 2 stout setae anteroventrally. STRUCTURE. HEAD: disc declivous; 1st labial segment extremely expanded dorsally ( Figs 2 , 3 , 5 ); 2nd labial segment elongate; 3rd and 4th labial segments shorter and of about same size. THORAX: ratio of pronotal collar length to pronotum length 0.24–0.28; collar depressed below rest of pronotum ( Fig. 1 ); posterolateral margin of pronotum somewhat deeply and somewhat broadly concave; postnotum rounded; ratio of height to length of forefemur 0.23; tarsal formula 3-3-3; ratio of length of hind tibia to width of pronotum 1.18–1.21; venation of macropterous forewing as in Fig. 8 ; tc shaped like flattened pentagon; dc forming very thin, long rectangle; An1 meets Cu. ABDOMEN AND GENITALIA: as in genus description ( Fig. 9 A,B ), with spiracle 8 set upon basally sclerotized tubercle of tergum 8 process ( Fig. 6 ).

Female: macropterous with small membrane reaching tip of abdomen; length: 1.87–2.07 mm; body elongate ovoid. COLORATION: wings dark brown, with pale stripe between costa and clavus; pronotum and scutellum dark brown; head, and body brown; 1st and 2nd labial segments yellow, 3rd and top of 4th labial segments tan, 4th labial segment with black tip; legs yellow with brown patches on coxae and tarsi. 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 0.25–0.26; collar not or only slightly depressed below rest of pronotum ( Fig. 1 ); posterolateral margin of pronotum deeply and somewhat broadly concave; postnotum slightly squared; ratio of height to length of forefemur 0.21–0.24; tarsal formula 2-2-3; ratio of length of hind tibia to width of pronotum 1.14–1.25; venation of macropterous forewing as in male. ABDOMEN AND GENITALIA: as in genus description ( Fig. 9 C,D ), with anterior gonapophysis with 3 teeth (anterior tooth rounded, middle and posterior teeth sharply pointed) and posterior gonapophysis with 2 teeth (posterior and anterior tooth sharply pointed).

Etymology. Named after the sawfish genus Pristis Linck, for the abundance of setae on the dorsally expanded 1st labial segment, reminiscent of the many teeth on the rostrum of this shark.

Distribution. Known from the Northern Range of Trinidad; although sympatric with O. tridentis sp. nov. in that area, O. pristis sp. nov. was collected in rainforest habitat, while the two specimens of O. tridentis sp. nov. were collected at the intersection between rainforest and grassland.

Macrohabitat and Collecting method: Tropical rainforest; 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 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 8. 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; scc—subcostal 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.