Macratria bugle, Telnov, 2023

Telnov, Dmitry, 2023, New species and records of Macratriinae LeConte, 1862 (Coleoptera: Anthicidae) from the Americas with five new descriptions, Zootaxa 5389 (2), pp. 173-192 : 174-178

Macratria bugle sp. nov. ( Figures 1–3 )

https://zoobank.org/ 7D378A2E-CCD2-4012-A05A-1525E779ECE2

Type material designated. Holotype ♂, MIUP: IBISCA Project Panama Colon San Lorenzo NP [printed] 5.4. [handwritten] 2004 [printed] [label black framed] // IBISCA 2003-05 Morphospec. sort Juergen Schmidl CO [printed] ANTH 9 [handwritten] [label black framed]. The right elytron is missing.

Paratypes 2 specimens. 1♂ DTC: IBISCA 2003-05 Morphospec. sort Juergen Schmidl CO [printed] ANTH 9 [handwritten] [label black framed] // IBISCA Project Panama Colon San Lorenzo NP [printed] May [printed, strikethrough by hand] 2004 [printed] [label black framed] ; 1♀ BMNH: PANAMA Bocas del Toro prov. Chiriqui Grande 19.ix.2007 08°56’32’’N, 082°09’20’’W, 30m, vegetation along road beating & sweeping L. SEKERKA & D. WINDSOR lgt. [printed, label green, black frame] .

Derivatio nominis. Named after the Buglé people, an Amerindian ethnic group of Chiriqui Province of Panama, where the new species occurs. Noun in apposition.

Measurements, holotype male, total body length 4.5 mm; head length 0.8 mm, head width across compound eyes 0.7 mm, pronotal length 1.1 mm, maximum pronotal width 0.7 mm, elytral length 2.7 mm, combined maximum elytral width 1.1 mm. Female paratype 4.9 mm long.

Description. Male ( Fig. 1A–B ). Dorsum and venter nearly uniformly black, mouthparts, clypeus and anterior frons striking pale yellow and terminal abdominal ventrite brown. Five basal antennomeres brown dorsally and ventrally, yellow laterally. Maxillary palpi yellow, terminal palpomere dark brown. Femora largely yellow, black at base and at articulation of tibia. Tibiae and tarsi black to dark brown, two terminal tarsomeres of each tarsus contrastingly yellow. Head subopaque dorsally, moderately glossy ventrally, elliptical, prolonged anteriorly. Frons moderately wide, about 0.8× as wide as dorsal eye length. Compound eye large, strongly protruding from lateral outline of head, nearly twice as long as strongly constricted tempus. Interfacetal setae long, dense. Head base narrow, subtruncate, medially distinctly, broadly notched. Frontoclypeal suture or impression not observed. Head dorsal punctures dense, moderately deep. Intervening spaces smooth, narrower than punctures. Head dorsal setae yellowish, subdecumbent, dense, effectively concealing dorsal surface of head. Tactile setae sparse, erect, long. Antenna slender and strongly filiform, thickened at apex, extending slightly beyond base of pronotum when directed posteriorly. Basal antennomere elongate, about 1.7× as long as antennomere two. Antennomere three about 1.2× as long as antennomere two, about same long as each antennomeres four to six, 0.8× as long as antennomere seven. Antennomeres 3–7 elongate, 8–10 somewhat widened and flattened. Terminal antennomere elongate subconical, acutely pointed, about 2.8× as long as penultimate antennomere, about as long as combined length of antennomeres 9–10.Terminal maxillary palpomere subcultriform. Pronotum subopaque dorsally, flattened in dorsal aspect, elongate elliptical, about as wide as head across compound eyes. Anterior margin narrowly truncate. Lateral margins slightly constricted anteriorly, broadly rounded medially. Dorsal pronotal punctures much larger and denser than those on head, deep. Intervening spaces irregularly corrugate, strongly narrower than punctures. Pronotal dorsal setation yellowish, dense, decumbent, effectively concealing dorsal sculpture of pronotum. Basal area of pronotum without zone of dense setae. Tactile setae sparse, erect to suberect, not or slightly longer than ordinary setae. Scutellar shield small, truncate at posterior margin, sparsely punctate, glossy. Elytron elongate, opaque, hardly narrowing posteriorly. Humerus broadly rounded. Postbasal transverse impression not indicated. Punctures on each elytron arranged into seven poorly defined, flat rows. Intervening spaces between rows minutely punctate to microstrigose. Elytral setation dirty yellowish, decumbent, long and dense, directed posteriorly and, in part, obliquely laterally, effectively concealing dorsal sculpture of elytron. Those setae in rows of punctures longer and thinner, directed strongly posteriorly. Tactile setae sparse, erect. Lateral humeral stria not shifted dorsad, not visible in dorsal view. Sutural stria complete, moderately broad. Metathoracic wing fully developed. Legs long and stout. Femur clavate. Tibia distinctly widened distally, densely setose, metathoracic tibiae slightly arched. Tibial terminal spurs paired, margins serrate; spurs of metathoracic tibiae about twice as long as those of pro- and mesothoracic tibiae. Tarsomeres of all legs elongate. Basal prothoracic tarsomere strongly widened. Basal metathoracic tarsomere about 1.5× as long as combined length of remaining metathoracic tarsomeres. All pretarsal claws strongly dentate at base. Male tergite VII elongate, broadly emarginate at posterior margin ( Fig. 2A ). Male morphological sternite VII rather short and broad, subtruncate medially at posterior margin ( Fig. 2B ). Male tergite VIII with long, narrow lateral arms, morphological sternite VIII apically deeply emarginate, sternite IX V-shaped ( Fig. 2C ). Aedeagus ( Fig. 2D–E ) long and rather slender, basale less than twice as long as apicale. Paramere apically asymmetrically narrowed. Median lobe apically tripartite.

Sexual dimorphism. Female ( Figs 1C , 3 ) somewhat larger and stouter, frons about as wide as dorsal eye length, antennomeres 3–8 stouter, less elongate than those of male, terminal antennomere twice as long as penultimate, as long as combined length of antennomeres 9–10, elytron less elongate, comparatively wider than that of male, metathoracic tibiae not or hardly arched, prothoracic tarsomeres stronger widened and flattened than those of male, basal metathoracic tarsomere about 1.5× as long as combined length of remaining metathoracic tarsomeres. Female tergite VII and morphological sternite VII broadly rounded at posterior margin ( Fig. 3A–B ). Female tergite VIII, morphological sternite VIII and IX as in Fig. 3C . Ovipositor as in Fig. 3D .

Differential diagnosis. Macratria bugle sp. nov. is peculiar due to the contrastingly pale-yellow anterior part of head and its elongate elliptical, anteriorly produced shape with strongly globose compound eyes and strongly constricted tempora. The new species only resembles M. guaymi sp. nov. ( Panama; described in the present paper) and is very distinctive in the shape of the male and female terminalia and aedeagus, the stronger constricted tempora and the narrower head base, the comparatively less dense dorsal punctures of head and pronotum, the strikingly bicoloured femora.

Ecology. Virtually unknown. The female paratype collected from roadside vegetation in a lowland rainforest.

Distribution. Panama: Chiriqui Province.

Figures

FIGURE 1. Macratria bugle sp. nov. A—Holotype ♂, habitus, dorsal view; B—Ditto, forebody, dorsal view; C—Paratype ♀, head and antenna, dorsal view [not to scale].

FIGURE 2. Macratria bugle sp. nov., holotype ♂. A—Tergite VII, dorsal view; B—Morphological sternite VII, ventral view; C—Tergite VIII and morphological sternites VIII and IX, ventral view; D—Aedeagus; E—Aedeagus, apicale, enlarged [not to scale].

FIGURE 3. Macratria bugle sp. nov., paratype ♀. A—Tergite VII, dorsal view; B—Morphological sternite VII, ventral view; C—Tergite VIII and morphological sternites VIII and IX, ventral view; D—Ovipositor [not to scale].