Cyphomyia albitarsis ( Fabricius, 1805 )

Torres-Toro, Juliana & Wolff, Marta, 2019, Description of the puparium of Cyphomyia albitarsis (Diptera: Stratiomyidae: Clitellariinae) from Colombia, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 59 (2), pp. 555-560 : 557-560

Cyphomyia albitarsis ( Fabricius, 1805)

( Figs 1–5 )

Stratiomys albitarsis Fabricius, 1805: 80 . Type locality: “America meridionali.” SYNTYPE: 1 ♀ [The Natural History Museum of Denmark, Copenhagen, Denmark, UZMC] (original description).

Cyphomyia fenestrata Macquart, 1846: 48 . Type locality: Mexico, Yucatán, Merida Syntypes ♀, J [unknown depository institution] (synonym).

Stratiomys albitarsis: WOODLEY (2001: 158, 2011: 410 ).

Material examined. COLOMBIA: Caldas,Anserma,Vereda San Pedro, Finca La Marqueza, trunk of papaya, 1700 m, A. L. Montoya leg. Eight larvae collected on 6.i.2015, five emerged on 9.ii.2015. Puparia and adults: 3 ♀♀ (CEUA-109379, CEUA-109376, CEUA-109377); 2 JJ (CEUA-109378, CEUA-83782); 1 puparium not emerged into adult (CEUA-109375); 2 last instar larvae not emerged into adult (CEUA- 83967, CEUA-109381).

Description. Puparium ( Figs 3–4 ). Length 14.2– 17.0 mm, comprising head ( Fig. 3 ), three thoracic segments ( Figs 3–4 ) and eight abdominal segments ( Fig. 4 ); cuticle brownish, erected dorsal setae mostly pubescent. Head ( Fig. 3 ). Subtriangular, roughly as long as one tenth of entire puparium length, longer than wide. Labrum triangular. Antenna short, rising dorsolaterally in anterior part of head. Eyes prominent, arising in middle of head capsule; lateral setae bipartite at apex; bulbous tubercles posterior to each eye. Mandibular-maxilary complex well developed; ventrocraneal sulcus evident. Chaetotaxy: 2 pairs of labral setae (Lb), 2 pairs of clypeofrontal setae (Cf), 1 pair of dorsolateral setae (Dl), 2 pairs of lateral setae (L) and 3 pairs of ventral setae (V). Thorax. Prothorax subrectangular with anterior spiracles prominent; mesothorax and metathorax rectangular with curved side edges. Chaetotaxy: prothorax in dorsal view with 2 pairs of anterodorsal setae (Ad), 3 pairs of dorsal setae (D1) and 1 pair of dorsolateral setae (Dl). Ventrally, 1 pair of ventrolateral setae (Vl) and 2 pairs of ventral setae (V), one small and simple (V 1), and one strong and tripartite (V 2) ( Fig. 3 ); mesothorax in dorsal view with 1 pair of anterodorsal setae (Ad), 1 pair of dorsal setae (D) and 1 pair of dorsolateral setae (Dl). Ventrally, 1 pair of ventrolateral setae (Vl) and 2 pairs of ventral setae (V), one tiny and simple (V 1), and one tripartite (V 2); metathorax in dorsal view with 2 pairs of anterodorsal setae (Ad), 1 pair of dorsal setae (D), 1 pair of dorsolateral setae (Dl) and 1 pair of lateral setae (L). Ventrally, 1 pair of ventrolateral setae (Vl) and 2 pairs of ventral setae (V), one small and simple (V 1), and one tripartite (V 2) ( Fig. 4 ). Abdomen ( Fig. 4 ). Pupal respiratory horn well preserved, arising from segments 2–5; segments 1–7 similar in shape. Dorsally with 3 pairs of dorsal setae (D), 1 pair of dorsolateral setae (Dl) and 1 pair of conspicuous and long lateral setae (L). Ventrally, with 2 pairs of ventrolateral setae (Vl) and 3 pairs of ventral setae (V), with (V 1) shorter than (V 2) and (V 3). Segment 6 with elliptical sternal patch. Segment 8 semicircular in shape, exhibits posterior spiracle dorsally just before apex (Ps); anal slit (Asl) much shorter than segment 8, surrounded by two perianal grooves. Chaetotaxy: dorsally with 1 pair of dorsal setae (D) and 2 pairs of lateral setae (L). Ventrally, 4 pairs of ventral setae (V), 1 pair of subapical setae (Sa) and 1 pair of apical setae (Ap).

Comments. As in other described puparia of Stratiomyidae species, the features of the mature larvae are still evident, except for the emerging suture well prominent and the presence of pupal respiratory horns. Only in one puparium, some of the horns did not reach full length.

The body shape, mosaic appearance of integument and general chaetotaxy present in Cyphomyia albitarsis described here are similar to the other species, but some marked differences were observed. The arrangement of setae on the prothorax of C. albitarsis differs from C. aurifrons and C. picta in the number of anterodorsal setae, with 2 pairs in C. albitarsis and 3 pairs in the other two. C. pilossisima differs in having 2 bulbous tubercles behind each eye and prothorax with only 2 pairs of dorsal setae. Some setae in C. albitarsis have a brushy appearance, being sometimes bipartite at apex or tripartite in the entire length, and pubescent, although they never show a plume-like appearance as seen in C. souzalopesi described by IIDE (1967). Additional external features are compared with the other known species of the genus in Table 1.

Distribution. Neotropical: Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Guyana, Honduras, Mexico, Panama, Paraguay, Peru, Trinidad, Venezuela ( WOODLEY 2001:158).

Figures

Figs 1–2. Mature larvae of Cyphomyia albitarsis (Fabricius, 1805) on Carica papaya L. stem in the field. Photographs © Augusto L. Montoya.

Fig. 3. Puparium of Cyphomyia albitarsis (Fabricius, 1805), capsule cephalic and thoracic segment one. Left, dorsal view; right, ventral view. Scale bar = 1 mm.

Fig. 4. Puparium of Cyphomyia albitarsis (Fabricius, 1805), thoracic segments two and three, and abdominal segments. Left, dorsal view; right, ventral view. Scale bar = 1 mm.

Fig. 5. Adult of Cyphomyia albitarsis (Fabricius, 1805) (♀), habitus, lateral view.