Glipidiomorpha rufiterga, Lu & Fan, 2000

Lu, Wenhua & Fan, Xiang, 2000, Two New Chinese Glipidiomorpha Franciscolo (Coleoptera: Mordellidae) And A Key To Mainland Species, The Coleopterists Bulletin 54 (1), pp. 1-10 : 5-8

Glipidiomorpha rufiterga , new species

Figs. 7–10 , 12

Holotype. Male (front and middle tarsi, hind legs, and epimere missing). Yunnan: Xishuanbanna, Mengla , 620–700 m; 29­V­1959, Zhang Yi­Ran.

Diagnosis. Form ( Fig. 12 ) moderately elongate, with maximum breadth in middle of pronotum. Ground color black, upper surface bicolored: pronotum almost entirely bright red except a narrow anterior edge, basal elytra ⅓ brightred, apical ⅔ black. A narrow transverse band of golden pubescence on elytra posterior to the basal red portion, a sutural stripe of golden pubescence along scutellum extending down to meet this band; another transverse band of golden pubescence, at least twice as broad as above mentioned one, located slightly below middle of the apical black portion, resulting in a broader anterior black band and a narrower apical one. Proximal antennal segments, proximal segments of maxillary and labial palpi, scutellum, pronotum and mesonotum ventrally, front and middle femora reddish brown; distal antennal segments, distal segment of maxillary and labial palpi, front tibia and tarsus dark brown. Pronotum surrounded by golden pubescence, narrowly on lateral and basal edges and broadly on anterior edge. Head with longer and golden pubescence on frons, shorter and black pubescence on vertex; scutellum covered with very fine short silvery pubescence; apical portion of pygidium and hypopygium covered by golden pubescence; underside covered by silvery to light golden pubescence, except abdominal segment 5 and outer area of abdominal segment 4.

Description. Head as broad as anterior edge of pronotum, convex; occipital margin seen from above regularly concave; temporal angle obtuse; tempora and temporal fringe entirely wanting; eyes large, suboval, hairy, finely gran­ ulated, reaching occiput; distance between eyes on vertex less than two eyes combined. Antenna subserrate, long, reaching base of pronotum; segments 1– 4 subequal, 3–4 narrower, twice as long as broad; segment 5 barely longer and ⅓ broader than 4; segments 5–10 of increasing width and of slightly decreasing length; segment 11 twice as long as 10, broadest of all segments. Maxillary palpus distal segment of Glipa ­ type, isosceles with apical side the longest, articulating with penultimate segment at an obtuse angle. Pronotum broader than long, broadest in middle; lateral sides strongly convex from above, abruptly folded inwards on basal ⅓ in lateral view; anterior lobe prominent, anterior angles obtuse and smooth; base arcuate, basal lobe short and broadly truncate, basal angles broadly obtuse but not rounded. Elytra as broad as pronotum at base and broadest at base, evenly attenuated apically, separately and broadly rounded at apex. Scutellum triangular. Elytral epipleuron ⅓ narrower than metepisternum at its maximum width; obsolete at level of ½ epicoxa; metepisternum broad and short (1.5 as long as maximally broad), truncate at apex. Legs: Inner side of front femur with some loose long setae; front tibia also with shorter but denser setae, slightly arched outward; front and middle tibiae longer than their tarsi, respectively, with tarsal segments 3–4 flattened and enlarged, segment 4 deeply emarginate and bilobed. In addition to a short and oblique subapical ridge, hind tibia with a fine long and complete dorsal ridge; hind basitarsomere also with such a fine dorsal ridge. Inner spur of hind tibia 3 ⁄ 5 as long as its basitarsomere, twice as long as outer spur. Tarsal ratios: 2­1­1­2­4, 2­1­1­3­7, 3­4­5­11. Pygidium short, flat, and stout, truncate at apex, 5 ⁄ 4 and ¼ times as long as hypopygium and elytra, respectively; hypopygium slightly flattened, rounded with a broad longitudinal depression in male. Urosternites: Eighth sternite ( Fig. 7 ) with slightly dilated lateral wings and apical protuberance emarginate; ninth sternite ( Fig. 8 ) ⅓ shorter than eighth, stout, strongly sclerotized on apical ¼ and asymmetrical at apex: a middle horn­like branch with some setae and a short right branch. Genitalia: Furca as long as tube, twice as long as penis. Right parameron ( Fig. 10 ) as long as left one with a shallow basal ridge; ventral branch arising immediately from base, heavily sclerotized with apical ¼ strongly narrowed and sharpened; dorsal branch and its base evenly sclerotized to a lesser degree than ventral branch; connection between dorsal and ventral branches extremely thin and membranous (where in the type is broken off). Left parameron ( Fig. 9 ) rather flat, branching from basal 3 ⁄ 5, medial branch ½ as long as dorsal branch. Penis about ½ as long as elytra, enlarged on apical ⅔, terminating in a simple pointed tip.

Dimensions (mm). Holotype: head 1.5 3 1.8; pronotum 1.7 3 2.1; elytra 4.1 3 1.85; pygidium 1.2 3 0.2; hypopygium 9.5; head to elytra 7.3.

Etymology. The Latin rufiterga refers to the largely red pronotum.

Remarks. The extremely thin connection between the dorsal and ventral branches of the right parameron in G. rufiterga , as well as the elytral color and pattern, indicate that this species is closely related to G. atraterga .

Figures

Figs. 7–10. Glipidiomorpha rufiterga, male, holotype. 7) eighth sternite; 8) ninth sternite; 9) left paramere; 10) right paramere. L, left; R, right; m, medial branch; r, basal ridge; d, dorsal branch; v, ventral branch.

Figs 11–15. Diagrammatic pubescent patterns of species of Glipidiomorpha. 11) G. atraterga. 12) G. rufiterga. 13) G. curticauda. 14) G. rufobrunneipennis. 15) G. kuatunensis. Figs. 13–15 redrawn from Ermisch (1968). Unshaded is red to brown. Stipple is dark gray to black. Fine line indicates white to yellow pubescence.