Urolabida graziae Roca-Cusachs, 2021

Roca-Cusachs, Marcos, Paris, Mercedes, Mohagan, Alma & Jung, Sunghoon, 2021, Urolabida graziae, new urostylidid species from the Philippines with comments on the current taxonomy and systematics of the family (Hemiptera: Heteroptera Urostylididae), Zootaxa 4958 (1), pp. 702-712 : 704-707

Urolabida graziae Roca-Cusachs , sp. nov.

( Figs 2 , 3.2 , 4 )

Holotype. Female. PHILIPPINES, (white locality label with its corners cut off, handwritten) dorsal side: “Cagallan / de / misamis / Mindanao”; ventral side: “leg / D. Sanchez / 1896” // (white label, printed) “ Urolabida graziae / Roca-Cusachs 2020” // (red label, printed) “ HOLOTYPE ” // (white label, printed) “ MNCN _Ent / 268497” (deposited in collection of Museo Nacional de Ciencias Naturales , Madrid) . Paratype. Male. Same data and same type of label as holotype, except (red label, printed) “ PARATYPE ” // (white label, printed) “ MNCN _Ent / 268498” (deposited in the collection of the first author) .

Etymology: This species is named after our friend and colleague Professora Jocelia Grazia, to honour her 75th birthday and her prosperous career in this special festschrift issue. Noun in genitive case standing in apposition.

Diagnosis. This species is very similar in external appearance to Urolabida bipunctata ( Fig. 1 ). Both Philippine Urolabida species are clearly distinguished from the remaining Philippine Urostilididae by the absence of ocelli. They are well separated from the other Urolabida species by having the lateral processes of the genital capsules greatly projected caudally and the medial ventral rim produced in a bifurcate process. Urolabida graziae sp. nov. differs from U. bipunctata in the shape, angle and length of the lateral processes of the genital capsule and by the presence of a tubercle at the internal basal lateral processes of the genital capsule.

Description. Species with no sexual dimorphism besides the external genitalia. General colouration yellowish green [when dry], slightly shiny, with concolorous coarse punctuation (distance between punctures exceeding puncture diameter) and rugose surface. Lateral margin of body bearing line of very short setae.

Head clearly wider than long. Mandibular plates 1/3 shorter than clypeus. Eyes globular, semipedunculate, protruding out of head profile. Antennae long, concolorous with body and covered with very short setae. Rostrum short, nearly reaching procoxae.

Pronotum trapezoidal, slightly sinuous at lateral centres. Costa slightly marked. Humeri rounded, very slightly protruding and bearing a darker coloured process just before humeral angle. Posterior margin of pronotum nearly straight. Scutellum simple, triangular, clearly longer than wide, acuminate at tip. Coria concolorous, margins parallel-sided. Hemelytra hyaline, shiny. Meso- and metasternum with long pilosity. Legs elongated, slightly pilose, concolorous and impunctate. Tarsi three segmented. Peritreme elongated, transversally projected laterally and spout. Abdomen, including spiracles and trichobothria, concolorous.

Male genitalia. Genital capsule with strongly developed lateral processes, projected caudally and facing somehow dorsally, rod-shaped and bearing a round, inward directed, protuberance on first basal third. Ventral process shallowly developed, bifurcated, U-shaped and with round apices. Ventral medial process very small or inconspicuous (fig. 3.2b). Paramere elongated, sinuous, bifurcated at tip (arrows in fig. 4c). and with an inward directed, spine-like sclerotized process above its medial portion (figs. 4a–c). Phallus (figs. 4d–e) compact, barrelshaped, strongly sclerotized. Process of vesica dorsoventrally with plate like, parallel-sided expansion (arrows in figs. 4d–e). Conjuntiva sclerotized, dorsoventrally expanded at apex, laterally with a dorsal orientated notch.

Female external genitalia. Abdominal tergite VII laterally rounded at tip, then sinuate, medially convex and expanding caudally to cover Laterotergites IX. Laterotergites IX small, rounded, and hidden under Abdominal tergite VII central caudal expansion. Laterotergites VIII broad and spatulate, distinctly projecting caudally. Laterotergites IX slightly visible, bean shaped, narrow, touching at base but divergent at apex, covered by abdominal tergite VII ( Fig. 2e ).

Measurements (in mm; male / female): total body length, 9.75 / 12.00; maximum abdominal width, 4.24 / 5.41; length of head, 0.89 / 1.20; maximum width of head, 1.68 / 1.77 length of rostrum, 1.72 / 1.88; interocular distance, 0,67 / 0.74; length of antennal segments I, 2.69 / 2.79; II, 3.31 / 3.72; III, 0.66 / 0.65; IV, 2.60 / 3.07; V (absent in both specimens), pronotal length at medium, 1.99 2.13; maximum pronotal width, 4.25 / 5.00; scutellar length, 2.89 / 3.37; and maximum scutellar width 2.42 / 2.90.

Distribution. Only known from the type locality. Cagayan de Misamis (= Cagayan de Oro), Mindanao (North), Philippines.

Figures

FIGURE 1. Male type specimen of Urolabida bipunctata Stål, 1870. a, dorsal; b, ventral; c, labels. Scale bar equals 1 mm.©2019 Naturhistoriska riksmuseet.

FIGURE 2. Urolabida graziae sp. nov. a–c, Holotype male: a, dorsal habitus; b, lateral habitus; c, ventral habitus; d–f, Paratype female; d, dorsal habitus; e, female plates; f, ventral habitus; g, original labels. Scale bar = 1 mm.

FIGURE 3. Male external genitalia, 1, Urolabida bipunctata Stål, 1870©2019 Naturhistoriska riksmuseet; 2, Urolabida graziae sp. nov.; a, Dorsal; b, ventral; c, caudal; d, lateral. Scale bar = 1 mm. (lp = lateral process of genital capsule; vp = ventral process of genital capsule; vmp = ventral medial process of genital capsule; p = paramere).

FIGURE 4. Urolabida graziae sp. nov. Male internal genitalia. a–c, Right paramere, different angles; d–e, Phallus, dorsoventral and lateral views, respectively. Scale bar = 1 mm, all structures are at the same scale.