Jurasai parahybanum, Nunes & Nascimento & Pereira-Colavite, 2023

Nunes, João Paulo, Nascimento, Matheus & Pereira-Colavite, Alessandre, 2023, A new species of Jurasai Rosa et al., 2020 and the first record of the family Jurasaidae (Coleoptera: Elateroidea) in the northern Brazilian Atlantic Forest, Zootaxa 5323 (4), pp. 524-534 : 527-531

Jurasai parahybanum sp. nov.

( Figures 3–5 )

Type material. Holotype m# “ BRAZIL, Paraíba. Jo ã o Pessoa / UFPB, Mata do Biotério , 7º08’18.43”S 34º50’35.31”W, 49 m / 19–25. V. 2023, Luiz de Queiroz UV light / Nunes, Nascimento & Colavite col.”, black bordered red label wrote HOLOTYPE, [ DSEC8071CO ] ( DSEC-UFPB) . Paratype 1 m# “ BRAZIL, Paraíba, Jo ã o Pessoa / UFPB, Mata do Biotério , 7º08’18.43”S 34º50’35.31”W, 49 m / 17–24. III. 2023, Luiz de Queiroz UV light / Nunes, Nascimento & Colavite col.”, black bordered green label wrote PARATYPE, [ DSEC8072CO ] ( DSEC-UFPB) . Paratype 1 m# Idem, except “ 05–11. V. 2023 ”, [ DSEC8073CO ] ( DSE-UFPB) .

Diagnosis. Adult male of Jurasai parahybanum sp. nov. is the smaller species among its congeners.Furthermore, it differ from the other Jurasai species by the unique following combination of characters: antennal insertions elevated ( Fig. 4 ), antennae shorter, reaching basal third of elytra ( Fig. 3 ), antennomeres I-VII brown, VIII light brown, IX-XI yellow ( Fig. 3 ), maxillary palpus four-segmented ( Fig. 4B ), pronotum widest at middle, rounded laterally ( Fig. 3A , 4A ); hindwing venation with RA 3+4 strongly sinuous, RM loop short, weakly impressed, MP 3+4 parallel to MP 1+2, anal field conspicuous, anal fold present, anal notch absent ( Fig. 5A, B ); parameres with lateral margins abruptly convergent on posterior third, convergent ventrad, spatulate on posterior third, apices flattened, phallus as long as parameres ( Fig. 5C, D, E ).

Differential diagnosis. Males of J.parahybanum sp. nov. can be distinguished from its congeners(in parentheses) by the following combination of characters: anterior margin of labrum deeply emarginate ( Fig. 4D ) (notched in J. itajubense ; truncate to slightly emarginated in J. digitusdei ), antennal insertions elevated ( Fig. 4 ) (flat in J. itajubense and J. miraculum ; slightly elevated in J. vanini , J. digitusdei and J. ypauoca ), antennae shorter, reaching basal third of elytra ( Fig. 3 ) (reaching the elytral apex in J. itajubense ; reaching half of elytra in J. digitusdei , J. vanini and J. ypauoca ), antennomeres I-VII brown, VIII light brown, IX-XI yellow ( Fig. 3 ) (antennomeres I-II yellow, III-XI light brown in J. digitusdei from S ã o Paulo; antennomeres I-III brown, gradually lighter and yellowish from IV to XI in J. vanini ; antennomeres I-VIII light brown, IX-XI yellow in J. ypauoca ; antennomeres yellow in J. itajubense and J. miraculum ) maxillary palpus four-segmented ( Fig. 4B ) (five-segmented in J. digisutsdei , J. vanini and J. ypauoca ), pronotum widest at middle (widest at anterior third in J. itajubense , J. digitusdei , J. vanini and J. ypauoca ), rounded laterally ( Fig. 3A , 4A ) (laterally sinuous in J. digitusdei , J. vanini and J. ypauoca ), elytra weakly tapered (strongly tapered in J. itajubense ), apical fourth of elytra darker ( Fig. 3A ) (uniform colored in J. miraculum and J. ypauoca ); hindwing venation with RA 3+4 strongly sinuous (indistinct in J. itajubense ; weakly impressed in J. miraculum ; slightly sinuous in J. digitusdei ; straight in J. vanini and J. ypauoca ), RM loop short, weakly impressed (distinct in J. digitusdei , J. vanini and J. ypauoca ), MP 3+4 weakly impressed (indistinct in J. miraculum ; distinct in J. digitusdei and J. ypauoca ), MP 3+4 parallel to MP 1+2 (oblique to MP 1+ 2 in J. digitusdei , J. vanini and J. ypauoca ); anal field conspicuous (inconspicuous in J. digitusdei , J. miraculum , J. ypauoca ), anal fold present, anal notch absent ( Fig. 5A, B ) (present in J. itajubense and J. vanini ); abdominal sternite VIII concealed (sternite VIII partly exposed in J. itajubense ), parameres with lateral margins abruptly convergent on posterior third, convergent ventrad, spatulate on posterior third, apices flattened ( Fig. 5C, D, E ) (curved inwards in J. itajubense ; rounded in J. vanini ; tapered in J. digitusdei , J. miraculum and J. ypauoca ), phallus as long as parameres ( Fig. 5D, E ) (phallus longer than parameres in J. itajubense , J. digitusdei , J. miraculum and J. ypauoca ). Furthermore, J. parahybanum sp. nov. is the smaller species among the other Jurasaidae species (2.5–4.5 mm), measuring 1.9–2.47 mm from head to apex of abdomen.

Description. Adult male. Total length from head to apex of wings 2.73 mm, up to apex of abdomen 2.47 mm. Body about four times longer than wide dorsally. Coloration of head, mandibles, pronotum, elytra and abdomen brown, frons with one lighter area between antennal insertions, apical fourth of elytra darker, antenna with antennomeres I-VII brown, VIII light brown, IX-XI yellow, ventral surface and legs pale yellow, except for femoral apices, tibiae and tarsi, which are brown ( Fig. 3 ).

Head in dorsal view 1.2 times wider than long, densely pubescent, and punctate, punctures large, umbilicate; antennal insertions elevated ( Fig. 4A ), exposed from above, separated by 2.3 times antennal insertion width ( Fig. 4C ), labrum 2.3 times wider than long, anterior margin deeply emarginate ( Fig. 4D ). Antenna reaching anterior third of elytra in dorsal view, densely covered with fine yellowish pubescence ( Fig. 3 ). Mouthparts with maxillary palps four-segmented, palpomeres II and III subequal in length, palpomere III as long as wide, palpomere IV 2.7 times longer than palpomere III, with apex fusiform; anterior margin of mentum and prementum slightly sclerotized, labial palps two-segmented, apical palpomere fusiform ( Fig. 4B, D ).

Pronotum 1.6 times wider than long, widest at middle, lateral margins rounded; anterior and posterior margins almost straight; anterior and posterior angles obtuse, lateral carinae absent; surface evenly densely setose-punctate, punctures umbilicate ( Fig. 4A ), prosternal process with apex forming acute angle ( Fig 3B , 4D ). Scutellar shield as wide as long, sides weakly convergent posteriad, posterior margin notched, finely setose ( Fig 3A , 4A ).

Elytra tapered with median edges divergent on posterior third, each elytron 3.5 times longer than wide; apex swollen; surface densely and finely punctate ( Fig. 3A ). Hind wing surpassing abdomen, 1.8 times longer than elytra (surpassing elytra by 0.8 times elytral length) ( Fig. 3C ); RA forked into RA 1+2 and RA 3+4, not contiguous, RA 3+4 strongly sinuous, r3 elongate, narrower on apical half, RM loop short, weakly impressed; MP 1+2 distinct, MSP strongly impressed on anterior third, reaching wing apex as light sclerotization, MP 3+4 weakly impressed, parallel with MP 1+2, Cu present as dark and large sclerotization, almost reaching wing apex, AA 3+4 distinct, darker on basal half, parallel to Cu, but not joining it; AP 3+4 distinct, not reaching wing apex; all veins blurred, except SCA, RA 1+2, MP 1+2 and basal third of MSP; anal field conspicuous, anal fold present, anal notch absent; apical field with four SS, the upper one slender, the two medial ones triangulars and lower one rectangular, occupying half of total wing length, apex notched between two apicalmost SS ( Fig. 5A, B ).

Legs with fourth tarsomere shortest, truncate at apex, trapezoidal.

Abdomen weakly sclerotized, densely covered with long and fine brownish pubescence ( Fig. 3B ). Tergite VIII with lateral margins broadly arched ventrad, two times wider than long, evenly sclerotized and covered with long setae on posterior half; sternite VIII completely concealed underneath sternite VII, reduced to glabrous, transverse and curved sclerotized strip, 11 times wider than long; apex of sternite IX divided into two very narrow elongate lobes, with long setae ( Fig. 5C, E ).

Aedeagus with parameres convex laterally, lateral margins abruptly convergent on posterior third, convergent ventrad, spatulate on posterior third, apices flattened ( Fig. 5E ); phallus as long as parameres ( Fig. 5D, E ), with anterior 1/3 abruptly narrowed to posterior 2/3; anterior third 1.8 times wider than long, 3 times wider than apical 2/3, anterior edge marginated; apical 2/3 parallel-sided in ventral view, sinuous in lateral view ( Fig. 5C ), 3 times longer than wide, apex rounded ( Fig. 5D, E ).

Female and immature stages. Unknown.

Variation. The specimens show a slight difference in length, with paratypes measuring 2.2–2.6 mm from head to apex of wings, up to apex of abdomen 1.9–2.3 mm.

Distribution. Northeast Brazil, Paraíba state, municipality of Jo ã o Pessoa.

Etymology. The specific name, parahybanum, is the Latinized demonym of the Paraíba state, derived from its original spelling form, Parahyba.

Figures

FIGURE 3. Jurasai parahybanum sp. nov., holotype, habitus: A, dorsal view; B, ventral view; C, lateral view. Scales: 1 mm.

FIGURE 4. Jurasai parahybanum sp. nov., holotype: A, head and pronotum, dorsal view; B, head and pronotum, lateral view; C, head close, dorsal view; D, head and mouthparts, ventral view. Scales: 0.5 mm.

FIGURE 5. Jurasai parahybanum sp. nov.: A, paratype, hind wing; B, paratype, schematic hind wing venation and color pattern; C, holotype, terminalia, oblique ventral view; D, holotype, terminalia, ventral view; E, paratype, terminalia, ventral view. Abbreviations: AA, anal anterior; AP, anal posterior; Cu, cubitus; MP, media posterior; RA, radius anterior; RM, radiomedial; SS, support sclerites. Scales: AB, 1 mm; CDE, 0.1 mm.