Macraspis species

Begha, Bruno Piotrovski & Santos, Mateus Henrique, 2020, Description of the third instar larva and pupa of Macraspis morio Burmeister, 1844 (Coleoptera: Scarabaeidae: Rutelinae) from Southern Brazil, Papéis Avulsos de Zoologia 60, pp. 1-6 : 5-6

Macraspis species (after Medeiros et al., 2019)

1. Labrum without preapical tubercles, septula and palidia present at midline of ventral anal lobe............................................................2

— Labrum with preapical tubercles, septula and palidia present at most in anterior third of anal ventral lobe...............................................3

2. Each side of frons with1 posterofrontal seta and 1 externofrontal seta; antennomere IV with 7 dorsal sensorial spots; labrum irregularly convex,without keel;maxilla with 6 stridulatory acute teeth.......... .............................................. Macraspis pseudochrysis Landin,1956

— Each side of frons with 2 posterofrontal setae and without externofrontal setae;antennomere IV with 5 dorsal sensorial spots; labrum convex and with weak preapical transverse keel; maxilla with 8 stridulatory acute teeth... Macraspis festiva Burmeister,1844

3. Each side of epicranium with 3 dorsoepicranial setae; labrum with 2 preapical tubercles.........................................................................4

— Each side of epicranium with4-5 dorsoepicranial setae;labrum with 4 preapical tubercles.........................................................................5

4. Cranium yellowish red;antennomere IV with 5 dorsal sensorial spots; each side of labrum with2-4 posterolabral setae;haptomerum with 19-20 spine-like setae;each palidium with 20-23 pali..................... .............................................. Macraspis rufonitida Burmeister,1844

— Cranium reddish brown;antennomere IV with 4 dorsal sensorial spots; each side of labrum with 10-14 posterolabral setae; haptomerum with 30-34 spine-like setae;each palidium with11-18 pali............. ................................................... Macraspis chrysis (Linnaeus,1764)

5. Each side of frons with more than 1 posterofrontal seta;labrum with 4 posterolabral setae;maxilla with 7-9 acute stridulatory teeth....... 6

— Each side of frons with 1 posterofrontal seta; labrum with 6-12 posterolabral setae;maxilla with 5-6 acute stridulatory teeth....... 8

6. Each side with 6 posterofrontal setae................................................... .................................................. Macraspis morio (Burmeister,1844)

— Each side with 2-3 posterofrontal setae .............................................7

7. Each side of epicranium with 5 dorsoepicranial setae;antennomere IV with 4 dorsal sensorial spots;each palidium with 20-24 pali ........... ................................................ Macraspis cribrata Waterhouse,1881

— Each side of epicranium with 4 dorsoepicranial setae;antennomere IV with 5-6 dorsal sensorial spots;each palidium with 26-30pali........ .......................................................... Macraspis cincta (Drury,1782)

8. Each side of clypeus with 1 anteroclypeal seta and 4-5 short externoclypeal setae, antennomere IV with 6 dorsal sensorial spots and 5 ventral sensorial spots... Macraspis aterrima Waterhouse,1881

— Each side of clypeus with 2 anteroclypeal setae and 2 long externoclypeal setae, antennomere IV with 8 dorsal sensorial spots and 8 ventral sensorial spots.......... Macraspis clavata (Olivier,1789)

Description of female pupa ( Fig. 8 )

Body lenght: 13 cm; width: 7.1 cm; shape oval, reddish-brown. Body surface glabrous, except at apex of the abdomen,that is covered by many small hairs. Meso- and metaventrite with an anterior keel-like projection.

Head ventrally directed, slightly visible from above; clypeus inflated, triangular; clypeofrontal suture sinuate; labrum, mandibles, maxillae, and palpi discernible, tubercle-like, antennal thecae rounded. Thorax with pronotum convex, margins curved. Posterior margin of mesonotum posteriorly expanded, the medial portion almost reaching the posterior margin of metanotum. Posterior margin of metanotum expanded medially, posterior projection covering the middle of the first abdominal tergite. Elytral and hind wing thecae curved ventrally around the body; elytral thecae extending to second abdominal segment; hind wing thecae extending to third abdominal segment, covering the metafemur in ventral view; legs with tarsomeres distinct. Abdomen with tergites II-VI with 4 pairs of gin traps between II-III, III-IV, IV-V, and V-VI; tergite IX with posterior area bearing dense, minute, reddish-brown setae. Spiracles of abdominal segment I hidden under posterior border of the hind wing thecae; spiracles II-IV visible, larger and darker, apparently functional with peritreme, spiracles V-VII closed and without peritreme. Urogomphi absent, tergite IX lateroventrally folded; fold posterior area rounded.

Remarks: when compared to pupae of other Rutelini, Macraspis can be identified by the long thoracic ventrite process that is extended between anterior legs, whilst other species, alike Chlorota and Lagochile , have the thoracic ventrite not prominent between anterior legs (Costa et al., 1988;Albertoni et al., 2014).When compared to oth- er members of its genus, M. morio is very similar to M. festiva , with the fold in the abdominal tergite IX reddish brown with short setae and a frontoclypeal suture somewhat straight and medially indistinct (Bento et al., 2018).

Figures

Figure 8. Macraspis morio Burmeister,1844; femalepupa;(A) dorsal view;(B) ventral view.Scale = 1 mm.