Aedes albopictus and Aedes aegypti are known to transmit Rickettsia felis. This leads us to consider that other Ricekttsiae may also be transmitted in the same way. Read this article:

https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(16)30331-0/fulltext

Hi Alan, I think you meant Anopheles gambiae. Dieme et alia (10.1073/pnas.1413835112) found what appears to be successful transmission of Rickettsia felis in that mosquito species. The roles of Aedes albopictus and Aedes aegypti in transmission of R. felis is only presupposed in the article you've referenced, not demonstrated. Whereas Socolovschi et alia (10.3201/eid1810.120178) showed that Ae. albopictus could be infected with R. felis, they did not demonstrate transmission.

Ticks remain on the host for a long period; from 24 hours to days before dropping off to moult or lay eggs. The feeding period in ticks is accompanied by copious secretion of salivary fluids. This pattern of salivary gland activity parallels the sequence of attachment, wound site formation, feeding, mating and repletion that characterizes the parasitic period. Tick salivary glands also secrete a veritable cornucopia of pharmacologically active substances, including anticoagulants, prostaglandin E2 (PGE2) and prostacyclin, vasodilators, apyrase, anti-inflammatory agents, anti-histamines (in some species) and others. In some species, enzymes that destroy bradykinins and anaphylatoxins, host proteins that play crucial roles in modulating the inflammatory response are secreted. In certain very successful host/parasite associations, e.g., the deer tick Ixodes scapularis, unknown salivary agents that suppress components of the host immune system, e.g., T.-cells are produced. On the other hand, mosquitoes are temporary ectoparasites. Their feeding is oftenly disrupted by the host through the anti-parasitic behaviour. Their salivary secretions mainly contain at least one anti-clotting, one anti-platelet, and one vasodilatory substance. Rickettsia and rickettsia-like bacteria are usually passively transmitted through the salivary secretions of the vector; the more the secretions and the longer the attachment period of the vector on the host the greater the vectorial capacity. In addition, ticks saliva contains immune suppressors that promote parasite or pathogen survival at the bite site for some time allowing time for dispersal.